General Specifications

Transcription

1 General Specifications XR Two-wire Magnetic Flowmeter Integral Flowmeter [Style: S2] GENERL DESCRIPTION The DMG XR two-wire magnetic flowmeter can be installed in the two-wire system without any C power source, thus drastically reducing the initial instrumentation cost. The DMG XR is the world s first two-wire magnetic flowmeter which employs the fluid noise free Dual Frequency Excitation Method, achieving excellent stability for instrumentation. Like the XF four-wire magnetic flowmeter series, the DMG XR has user-friendly functions such as a full dot-matrix LCD indicator, electrode adhesion level diagnosis function, and a multi-lingual display. The magnet switches can be used for checking and setting parameters without opening the case cover. Note: The Dual Frequency Excitation Method is Yokogawa s unique technology. FETURES gh Performance and Excellent Functionality Dual Frequency Excitation Method The Dual Frequency Excitation Method combines two strengths: stability in flow measurement due to low frequency excitation and high noise resistance due to high frequency excitation. Therefore, the method is strong against fluctuations of fluid condition and is ideal for stable measurement. gh ccuracy The DMG XR performs 0.5% of rate under normal flowrate conditions. Electric Noise Resistance The DMG XR offers electric noise resistance compared with the four-wire magnetic flowmeter. gh Reliability The DMG XR complies with SIL2 for safety requirement. The DMG XR has SIL2 capability for single flowmeter use and SIL3 capability for dual flowmeter use. Reducing the Instrumentation Cost Reducing the Wiring Cost The two-wire system reduces the wiring cost drastically. Direct Connection with the DCS C power sources are not necessary. The DMG XR can be connected with almost all distributors, signal conditioner cards, and input modules. Energy Saving Compared with four-wire magnetic flowmeters, the DMG XR can drastically decrease power consumption. User-friendly Functionality Enhanced Diagnostic Function By checking the level of the insulating substance on the electrodes, it is possible to determine when maintenance is required. Results of mean flow measurement during a given period, etc. can be checked by using parameters. Clear and Versatile Indications The full dot-matrix LCD indicator facilitates various displays such as one to three lines and multi-lingual display. In an alarm condition, a full description of the countermeasure is indicated. Parameter Setting Magnet switches and push switches are employed. Magnet switches enable parameters to be set without opening the case cover in the hazardous area. Various Output Signals In addition to the current output, one output can be selected among pulse, alarm, and status. Various functions such as multiple-range, forward and reverse flow measurement, and flow rate upper/lower limit alarm are achieved. The pulse output is a high speed of 10,000 pps (pulses per second). CONTENTS General description, Features P.1 Standard Specifications P.2 Hazardous rea Classification P.7 Standard Performance P.9 Normal Operating Conditions P.11 Cautions for Installation P.12 ccessories P.13 Terminal Configuration and Terminal Wiring P.13 Wiring Example P.1 Model and Suffix Code P.21 Optional Specifications P.25 External Dimensions P.2 Sizing Data P.35 Ordering Information P.36 Yokogawa Electric Corporation , Nakacho, Musashino-shi, Tokyo, Japan Tel.: Fax.: Copyright ug. 9 (KP) 5th Edition Mar (KP)

2 STNDRD SPECIFICTIONS Converter The contents of (*1) and (*2) described in the converter specifications are follows. *1: One output can be selected from pulse, alarm, or status through the parameter setting. *2: For models without an indicator, the configuration tool (Such as handheld terminal or FieldMate, etc.) is necessary to set or change parameters. Excitation Method: Dual frequency excitation: Size 25 to mm (1 to in.) Output Signals: Current output and digital output can be carried out simultaneously. Read WIRING EXMPLE. Current output: to 20 m DC, two-wire system Output range: 3. to 20.5 m ( 1.25 to %) Digital output (*1): Transistor contact output, open collector Contact rating: 30 V DC, 120 m DC Low level: 0 to 2 V DC (Read Figure 1) HIGH level LOW level Figure 1 gh and Low levels (transistor contact output) 0 to 2 V 0 V F01.ai Current Output Status at System larms (Burnout) Up-scale: 110%, 21.6 m DC or more (standard) Down-scale: 5%, 3.2 m DC or less Supply Voltage: 1.7 to 2 V DC for general-purpose use and explosion proof type 1.7 to 32 V DC for lightning protector (optional code ) Note 1: Supply voltage means the voltage necessary to provide between the power terminals of the magnetic flowmeter. Note 2: Connecting with the commercial C power supply will damage the flowmeter. Be sure to use the DC power supply in the predetermined range. Note 3: The DMG XR can be connected with almost all distributors, signal conditioner cards, and I/O modules except certain devices. Read the following table for Yokogawa s devices, choose an appropriate connecting device and the corresponding length of cable. For devices other than those in the table, decide on the connection by reading the supply voltage specifications and the description in WIRING EXMPLE. Connecting device Name Signal Conditioner Card I/O Module nalog I/O Module (for FIO) nalog I/O Module (for Prosafe-RS) Distributor JUXT Model E1 E2 2 Maximum length of cable (rough guideline) Cable with Cable with cross section cross section of 2 mm 2 of 1.25 mm 2 2 km 2 km M11 M11B 2 km 2 km I13 2 km 2 km I11 I1 I135 Not applicable Not applicable I35 SI13 1. km 0. km SDBT SDBS VJ1 VJ VJ7 2 km 2 km 2 km 2 km Communication Requirement: BRIN Communication Signal: BRIN communication signal (superimposed on to 20 m DC signals) Conditions of Communication Line: Supply Voltage: 20.6 to 2 V DC Load Resistance: 250 to 600 Ω (including cable resistance) Read Figure 2. Communication Distance: Up to a distance of 2 km when a CEV cable is used Read WIRING EXMPLE. Load Capacitance: 0.22 μf or less Load Inductance: 3.3 mh or less Distance from other Power Line: 15 cm (6 in.) or more (void parallel wiring.) Input Impedance of Communicating Device: 10 kω or more at 2. khz 600 External Load Resistance R (Ω) 250 R= E Digital Communication Range (BRIN or HRT) Power supply voltage E (V DC) F02.ai Figure 2 Relationship Between Power Supply Voltage nd External Load Resistance HRT Communication Signal: HRT communication signal (superimposed on to 20 m DC signals) Note: HRT is a registered trademark of the FieldComm Group. Conditions of Communication Line: Supply Voltage: 20.6 to 2 V DC ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

3 Load Resistance: 250 to 600 Ω (including cable resistance) Read Figure 2. HRT Protocol Revision: HRT protocol revision can be selected from 5 or 7 when ordering. ( -J only) The protocol revision can be changed by user configuration. The HRT protocol revision at the time of shipment is shown by the last number at the serial number column of the name plate. Note: Protocol revision supported by HRT configuration tool must be the same or higher than that of XR. Selection of HRT 5/ HRT 7 Output Signal Code Ordering Information HRT Protocol Revision Selection guide Requirement for HRT 7 functionality -E -J Specify 5 Specify 7 HRT 5 HRT 7 NO YES Be sure to confirm the protocol revision of the HRT configuration tool shown in Note 2. Not available to vailable vailable to switch to switch Other switch to to HRT to HRT conditions protocol HRT 7 7 protocol after col after 5 proto- after delivery. delivery by delivery by user-configurationfiguration. user-con- Remarks Note 1 Note 2 Note 2 Note 1: "-E" is HRT5 exclusive model and will be terminated. "-J" is recommended for HRT communication. Note 2: HRT protocol revision for the device and HRT configuration tool HRT 7 communication is supported by Field- Mate R2.0 or later. Protocol revision supported by HRT configuration tool 5 7 XR, HRT 5 vailable vailable XR, HRT 7 Not available vailable Indicator (*2): Full dot-matrix LCD (12 x 6 pixels) Operational switch: magnet switches (including push switches) Lightning Protector: When optional code is selected, the lightning protector is built into the power supply and digital output terminals. Protection: General-purpose Use/TIIS Flameproof type: IP66/IP67, Type X Explosion proof type except for TIIS: In the case of explosion proof type except TIIS, read description of Enclosure in HZRUS RE CLSSIFICTION. 3 Converter Coating: Case and Cover: Corrosion-resistant coating Coating Color: Mint-green paint (Munsell 5.6 BG 3.3/2.9 or its equivalent) Converter Material: Case and Cover: luminum alloy Mounting/Shapes: Electrical Connection: NSI 1/2 NPT female ISO M20 x 1.5 female JIS G1/2 female Direction of Electrical Connection: The direction can be changed even after delivery. Terminal Connection: M size screw terminal Grounding: Grounding resistance of 100 Ω or less is necessary. When the optional code is selected, grounding resistance of 10 Ω or less shall be required. * In case of TIIS explosion proof type, read description of HZRUS RE CLSSIFICTION. * For an explosion proof type except for TIIS, follow the domestic electrical requirements in each country. Functions How to Set Parameters (*2): Both of four push buttons and magnet switches can be used for setting. The magnet switches can be used to set parameters without opening the case cover. The magnet switches need operational magnets (optional code BM). These are also available as part number F90P. Users can choose a language on indicator from English, Japanese, German, French, Italian, and Spanish. Parameters can also be set with the configuration tool (Such as HHT (handheld terminal) or FieldMate, etc.). The language for the HHT is English only. Instantaneous Flow Rate/Totalized Value Display Functions (for models with an indicator) (*2): The full dot-matrix LCD enables user selections of displays from one line to three lines for: Instantaneous flow rate Instantaneous flow rate (%) Instantaneous flow rate (bar graph) Current output value (m) Totalized forward-direction flow rate Totalized reverse-direction flow rate Totalized differential flow rate Tag No. Results of electrode adhesion diagnosis Communication type Totalizer Display Function (*2): The flow rate is counted one count at a time according to the setting of totalization pulse weights. For forward and reverse flow measurement functions, the totalized values of the flow direction (forward or reverse) and the flow direction are displayed on the indicator together with the units. The difference of totalized values between the forward and reverse flow rate can be displayed. Totalization for the reverse flow rate is carried out only when Forward and reverse flow measurement functions is selected. Damping Time Constant (*2): The time constant can be set from 1.0 second to.0 seconds (63% response). The default is 5 seconds. ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

4 When the damping time is short, the output fluctuates. Set the time to 5 seconds or more for control loop. Span Setting Function (*2): Span flows can be set in units such as volume flow rate, mass flow rate, time, or flow rate value. The velocity unit can also be set. Volume Flow Rate Unit: kcf, cf, mcf, Mgal (US), kgal (US), gal (US), mgal (US), kbbl (US)*, bbl (US)*, mbbl (US)*, μbbl (US)*, Ml (megaliter), m 3, kl (kiloliter), l (liter), cm 3 Mass Flow Rate Unit (Density must be set): klb (US), lb (US), t (ton), kg, g Velocity Unit: ft, m (meter) Time Unit: s (sec), min, h (hour), d (day) * US Oil or US Beer can be selected. Pulse Output (*1)(*2): Scaled pulse is output one by one according to the setting of pulse weight. Pulse Width: Duty 50% or fixed pulse width (0.05, 0.1, 0.5, 1, 20, 33, 50, 100,, 330, 500, 1000, 0 ms) can be selected. Output Rate: to 10,000 pps (pulses per second) Multi-range Functions (*1)(*2): utomatic range switching When the flow rate exceeds 100% of the range, transition to the next range (up to two ranges) is carried out automatically. Range switching can be confirmed by the status output and on the indicator. Forward and Reverse Flow Measurement Functions (*1)(*2): Flows in both forward and reverse directions can be measured. The reverse flow measurement can be confirmed by the status output and on the indicator. Totalization Switch (*1)(*2): The status output is carried out when a totalized value becomes equal to or greater than the set value. Preset Totalization (*1)(*2): The parameter setting enables a totalized value to be preset to a setting value or zero. larm Selection Function (*2): larms are classified into the System larms (hardware failure), Process larms (such as Signal Overflow and dhesion larm), Setting larms, and Warnings. Process larms and Setting larms can be activated or deactivated for each item. The current output for an alarm can be selected from the following settings. If any System larm occurs, turn the power off and back on again to return to the normal condition. System larm: 21.6 m or more, 3.2 m or less Process larm, Setting larm: 21.6 m or more, 20.5 m, HOLD (fixed to the current value before the alarm), m, 3. m, 3.2 m or less The default settings of each alarm are as follows: Optional Standard code C1 System larm Process larm (Note) 21.6 m or more 3.2 m or less Setting larm (Note) Note: In the case of style:s1 with optional code C1, the current output is set up to 3. m during Process larms and Setting larms. NE-107 larm Message (*2): larms are classified into categories by NMUR NE-107 and can be displayed. -F: Failure -C: Function check -S: Out of specification -M: Maintenance required larm Output (*1)(*2): larms are generated only for the items selected via the larm Selection Function if relevant failures occur. Self Diagnosis Functions (*2): When an alarm is output, details of the System larms, Process larms, Setting larms, and Warnings are displayed together with the specific description of corresponding countermeasures. Results of mean flow measurement during a given period, etc. can be checked by using parameters. Flow Rate Upper/Lower Limit larms (*1)(*2): If a flow rate becomes out of the predetermined range, the alarm output is generated. Electrode dhesion Diagnosis Function (*1) (*2): This function enables checking of the adhesion level of insulating substances to the electrodes. Depending on the status of adhesion, users are notified by a warning or an alarm via status outputs. While adhesion diagnosis is being carried out (approximately 5 minutes), a current of m is output because the flow measurement is not performed. dhesion diagnosis should only be carried out when the fluid velocity is completely zero by closing the valve. When adhesion diagnosis is carried out, change the control loop to the manual mode first. Data Security during Power Failure: Data (parameters, totalization value, etc.) storage by EEPROM. No back-up battery required. Low Cut (*2): In this function, the values of the current output along with LCD indication, totalization, and pulse, which are corresponding to setting span of 0 to 20%, are fixed at 0% (including reverse flow). The default setting is 3%. When the Low Cut point is small, the incorrect output may occur at the flow rate of zero. Set the Low Cut point to 3% or more. If the span is small, the damping time is short or the fluid is low conductivity, the incorrect output may easily occur at the flow rate of zero. Zero djustment Function (*2): By using the parameter setting, zero adjustment is carried out to ensure that the output for zero flow is 0%. Zero adjustment should be carried out only when the flowtube is filled with measurement fluid and the flow is completely stopped by closing the valves. During zero adjustment (50 seconds), the current output is 10. m. ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

5 Flowtubes Size of XR Flowtubes: Lay length code 1 Use General-purpose Use/Explosion Proof Type Process Connection Unit: mm (in.) Integral Flowmeter 0 (3.0), 100 (.0), Wafer *1 (6.0), (.0) 25 (1.0), 0 (1.5), 50 (2.0), 65 (2.5), Flange *1 0 (3.0), 100 (.0), (6.0), (.0) *1: The dimensions of lay length code 1 are the same as those of the PF lining standard lay length (lay length code 1) in the XF series. For details, read EXTERNL DIMENSIONS. Lay length code 2 Unit: mm (in.) Use Process Connection Integral Flowmeter General-purpose Use/Explosion Proof Type Wafer *2 25 (1.0), 0 (1.5), 50 (2.0), 65 (2.5), 0 (3.0), 100 (.0), (6.0), (.0) *2: Excluding the size of 65 mm, dimensions of lay length code 2 are the same as those of PF lining replacement models (lay length code 2) in XF series. Lay lengths for special gaskets (optional codes G, GB, GD) are different. For details, read EXTERNL DIMENSIONS. Coating: General-purpose Use/Explosion Proof Type: Size 25 to 100 mm (1 to in.) (Wafer type), Size 25 to 100 mm (1 to in.) (Flange type): Housing: No coating (Stainless steel surface) Flange (Flange type only): No coating (Stainless steel surface) Size to mm (6.0 to in.) (Wafer type), Size to mm (6.0 to in.) (Flange type): Housing, Flange (Flange type only) Corrosion-resistant coating Coating color; Mint green (Munsell 5.6 BG 3.3/2.9 or its equivalent) Flowtube Material: Size 25 to 100 mm (1 to in.) Mini- Flange Pipe Part Name Housing Wafer type Wafer type Flange Flange type Size 25 mm (1.0 in.) Size 0 to 100 mm (1.5 to.0 in.) Size 25 mm (1.0 in.) Size 0 to 100 mm (1.5 to.0 in.) Size 25 mm (1.0 in.) Size 0 to 100 mm (1.5 to.0 in.) 5 Material Stainless steel-jis SUS30 (ISI 30 SS/EN equivalent) Stainless steel-jis SUS30 or SUSF30 (ISI 30 SS/EN equivalent) Stainless steel-scs13 Stainless steel-jis SUS30 STM 300/DIN X6Cr17/ EN equivalent Size mm (6.0 in.) to mm (.0 in.) Flange Mini- Flange Pipe Stainless steel-scs13 Stainless steel-jis SUS30 (ISI 30 SS/EN equivalent) Stainless steel-scs13 Stainless steel-jis SUS30 (ISI 30 SS/ EN equivalent) Part Name Material Carbon steel-jis SPCC Housing equivalent Stainless steel-jis SUS30 or SUSF30 Process Connection code: B** (ISI 30 SS/EN equivalent) Carbon steel-jis SS00 Process Connection code: C** or SFVC 2 Carbon steel-jis SS00 Wafer Type or SFVC 2 Stainless steel-jis SUS Flange Type/Wafer Type 30 (ISI 30 SS/EN equivalent) Wetted Part Material: Lining; Fluorocarbon PF *1 lining *1: PF is FD (U.S. Food and Drug dministration) approval material. The inner surface of the PF lining is mirror-finished to Ra of 0.05 to 0.15 μm. The value of Ra is the average of measurements at several points. Mirror finished PF lining is standard for size 25 to 100 mm (1 to in.) and optional for size to mm (6 to in.) specified by optional code PM. Electrode; Stainless steel-jis SUS316L (ISI 316L SS/EN 1.0 equivalent), Hastelloy *1 C276 equivalent, Tantalum, Platinum-Iridium ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

6 Grounding Ring/Grounding Electrode; Grounding Ring (plate type) Stainless steel-jis SUS316 (ISI 316 SS/EN 1.01 equivalent), Stainless steel-jis SUS316L or STM 316L (ISI 316L SS/EN 1.0 equivalent), Hastelloy *1 C276 equivalent Grounding Electrode (electrode type) *2 Fluorocarbon PF lining grounding electrode (Tantalum, Platinum-Iridium) *1: Hastelloy is a registered trademark of Haynes International Inc. *2: The permeable fluids (such as nitric acid, hydrofluoric acid, or sodium hydroxide at high temperature) are unusable. Gasket; Use General-purpose Use/ Explosion Proof Type Standard Optional code (G, GC, or GD) Use Optional code (BCF, BSF, BCC, or BSC) Grounding ring No gasket within Flowtube Grounding ring Gasket within Flowtube Gasket Material (within Flowtube) G: Fluororubber for PVC pipes (Viton ) GC: cid-resistant fluororubber for PVC pipes (Viton ) GD: lkali-resistant fluororubber for PVC pipes (Viton ) General-purpose Use/ Explosion Proof Type Grounding ring Flange of user s pipe Gasket for user s flange Gasket Material (for user s flange) BCF, BSF: PTFE-sheathed non-asbestos BCC, BSC: Chloroprene rubber Recommended Gaskets Between Flowtubes nd User s Flanges: Gaskets Type Use compressed non-asbestos fiber gaskets, PTFE-sheathed non-asbestos gaskets or gaskets which have equivalent elasticity. For optional codes G, GC, and GD, use rubber gaskets or others which have equivalent elasticity. Gaskets Size Be sure to choose a gasket with an inner and outer diameter that does not protrude inside the piping (Read item of Inner Diameter Of Grounding Ring, Outer Diameter For Effective Sealing). If the inner diameter of the gasket is too large, or outer diameter of the gasket is too small, fluid leakage may result. Inner Diameter of Grounding Ring, Outer Diameter for Effective Sealing, Recommended Inner Diameter of Gasket; Lay length code 1; Unit: mm (in.) Size Inner Diameter of Grounding Ring [ø] PF lining Wafer, Flange Outer Diameter for Effective Sealing [øb] Recommended Inner Diameter of Gasket Flat Gasket [øc] 25 (1.0) 2 (1.10) 53 (2.09) 35 (1.3) 0 (1.5) 1 (1.61) 71 (2.0) 9 (1.93) 50 (2.0) 53 (2.09) (3.31) 61 (2.0) 65 (2.5) 66 (2.60) 103 (.06) (3.31) 0 (3.0) 77 (3.03) 11 (.9) 90 (3.5) 100 (.0) 102 (.02) 10 (5.51) 115 (.53) (6.0) 16.1 (5.75) 190 (7.) 167 (6.57) (.0) (7.62) 20 (9.5) 21 (.5) Lay length code 2; Size Inner Diameter of Grounding Ring [ø] PF lining Wafer Outer Diameter for Effective Sealing [øb] 6 PTFEsheathed Nonasbestos Gasket [ød] Unit: mm (in.) Recommended Inner Diameter of Gasket Flat Gasket [øc] 25 (1.0) 2 (1.10) 53 (2.09) 35 (1.3) 0 (1.5) 1 (1.61) 71 (2.0) 9 (1.93) 50 (2.0) 53 (2.09) (3.31) 61 (2.0) 65 (2.5) 66 (2.60) 103 (.06) (3.31) 0 (3.0) 77 (3.03) 11 (.9) 90 (3.5) 100 (.0) 102 (.02) 10 (5.51) 115 (.53) (6.0) 10.7 (5.5) 190 (7.) 167 (6.57) (.0) 1.9 (7.) 20 (9.5) 21 (.5) PTFEsheathed Nonasbestos Gasket [ød] ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

7 7 Size of Inner Diameter of Grounding Ring, Outer Diameter for Effective Sealing and Recommended Inner Diameter of Gasket: ød *1 øc ø øb XR Flowtube Lining Grounding Ring Flat Gasket PTFE-sheathed Non-asbestos Gasket *1: Do not have this length be smaller than the inner diameter of grounding ring (ø). Electrode Construction: Internal insertion type F06.ai HZRUS RE CLSSIFICTION TEX: pplicable Standard: EN , EN , EN , EN , EN Certificate: DEKR 11TEX01 Type of Gas tmosphere Protection Type of Protection: Group: II Category: 2G Ex d e ia IIC T6...T Gb Specification of Protection: Electrode Circuit: Um=250 V Power Supply/Current Output: 2 Vdc max., to 20 m, Um=250 V Digital Output: ON; 2 Vdc, 120 m max. OFF; 30 Vdc max., m, Um=250 V Excitation Circuit: 29 V max. Enclosure: IP66/IP67 Process : Class Maximum Process Minimum Process T6 70 C (15 F) 30 C ( 22 F) T5 5 C (15 F) 30 C ( 22 F) T 130 C (266 F) 30 C ( 22 F) mbient Temp.: 30 C to 55 C ( 22 F to 131 F) Type of Dust tmosphere Protection Type of Protection: Group: II Category: 2D Ex tb IIIC T90 C, T110 C, T130 C Db Specification of Protection: Electrode Circuit: Um=250 V Power Supply/Current Output: 2 Vdc max., to 20 m, Um=250 V Digital Output: ON; 2 Vdc, 120 m max. OFF; 30 Vdc max., m, Um=250 V Excitation Circuit: 29 V max. Enclosure: IP66/IP67 Process : Maximum Surface Maximum Process Minimum Process T90 C (19 F) 70 C (15 F) 30 C ( 22 F) T110 C (230 F) 5 C (15 F) 30 C ( 22 F) T130 C (266 F) 130 C (266 F) 30 C ( 22 F) mbient Temp.: 30 C to 55 C ( 22 F to 131 F) Note: Grounding resistance of 100Ω or less is necessary. When the optional code is selected, grounding resistance of 10Ω or less shall be required. FM pplicable Standard: FM3600, FM3610, FM3615, FM310, NSI/NEM250 Type of Protection: Explosionproof for Class I, Division 1, Groups, B, C & D Dust-ignitionproof for Class II/III, Division 1, Groups E, F & G With intrinsically safe electrodes for Class I, Division 1, Groups, B, C & D SEL LL CONDUITS WITHIN 1 INCHES WHEN INSTLLED IN DIV. 2, SELS NOT RE- QUIRED Specification of Protection: Electrode Circuit Um: 250 V Power Supply/Current Output: 2 Vdc max. / to 20 m Digital Output: ON; 2 Vdc, 120 m max. OFF; 30 Vdc max., m Excitation Circuit: 29 V max. Enclosure: NEM Type X Process : Code Maximum Process Minimum Process T6 70 C (15 F) 0 C ( 0 F) T5 5 C (15 F) 0 C ( 0 F) T 130 C (266 F) 0 C ( 0 F) mbient Temp.: 0 C to 55 C ( 0 F to 131 F) Note: Installation shall be in accordance with the manufacturer s instructions, National Electric Code, NSI/NFP-70, and Local Electric Code. CS Certificate No.: For Division system of area classification pplicable Standard: C22.2 No.0, C22.2 No.0., C22.2 No.0.5, C22.2 No.25, C22.2 No.30, C22.2 No.9, C22.2 No.157, C22.2 No Type of Protection: Class I, Groups, B, C and D; Class II, Groups E, F and G; Class III With Intrinsically Safe Electrodes for Class I, Groups, B, C and D Specification of Protection : Electrode Circuit Um: 250 V Power Supply/Current Output: 2Vdc max./ to 20m ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

8 Digital Output: On: 2Vdc, 120m max. Off: 30Vdc max., m Excitation Circuit: 29V max. Enclosure: Type X Process : Code Maximum Process Minimum Process T6 70 C (15 F) 0 C ( 0 F) T5 5 C (15 F) 0 C ( 0 F) T 130 C (266 F) 0 C ( 0 F) mbient : 0 to 55 C ( 0 F to 131 F) For Zone system of area classification pplicable Standard: C22.2 No , E , E , E , E , C22.2 No Type of Gas tmosphere Protection Type of Protection: Ex d e [ia] IIC T6 T with Intrinsically Safe Electrodes for Zone 0, Ex ia IIC T6 T Specification of Protection: Electrode Circuit Um: 250 V Power Supply/Current Output: 2Vdc max./ to 20m Digital Output: On: 2Vdc, 120m max. Off: 30Vdc max., m Excitation Circuit: 29V max. Enclosure: IP66/IP67 Process : Code Maximum Process Minimum Process T6 70 C (15 F) 0 C ( 0 F) T5 5 C (15 F) 0 C ( 0 F) T 130 C (266 F) 0 C ( 0 F) mbient : 0 to 55 C ( 0 F to 131 F) Type of Dust tmosphere Protection Type of Protection: DIP 21 T 90 C, 110 C, 130 C Specification of Protection: Electrode Circuit Um: 250 V Power Supply/Current Output: 2Vdc max./ to 20m Digital Output: On: 2Vdc, 120m max. Off: 30Vdc max., m Excitation Circuit: 29V max. Enclosure: IP66/IP67 Process : Maximum Surface T Maximum Process Minimum Process 90 C 70 C (15 F) 0 C ( 0 F) Process Sealing Certification: Dual Seal certified by CS to the requirements of NSI/IS No additional sealing required. Primary seal failure annunciation; Deterioration of the flowrate output at nonzero flow point. Unstable flowrate output at zero flow point. IECEx: pplicable Standard: IEC , IEC , IEC , IEC , IEC Certificate: IECEx DEK Type of Gas tmosphere Protection Type of Protection: Ex d e ia IIC T6...T Gb Specification of Protection: Electrode Circuit: Um=250 V Power Supply/Current Output: 2 Vdc max., to 20 m, Um=250 V Digital Output: ON; 2 Vdc, 120 m max. OFF; 30 Vdc max., m, Um=250 V Excitation Circuit: 29 V max. Enclosure: IP66/IP67 Process : Class Maximum Process Minimum Process T6 70 C (15 F) 30 C ( 22 F) T5 5 C (15 F) 30 C ( 22 F) T 130 C (266 F) 30 C ( 22 F) mbient Temp.: 30 C to 55 C ( 22 F to 131 F) Type of Dust tmosphere Protection Type of Protection: Ex tb IIIC T90 C, T110 C, T130 C Db Specification of Protection: Electrode Circuit: Um=250 V Power Supply/Current Output: 2 Vdc max., to 20 m, Um=250 V Digital Output: ON; 2 Vdc, 120 m max. OFF; 30 Vdc max., m, Um=250 V Excitation Circuit: 29 V max. Enclosure: IP66/IP67 Process : Maximum Surface Maximum Process Minimum Process T90 C (19 F) 70 C (15 F) 30 C ( 22 F) T110 C (230 F) 5 C (15 F) 30 C ( 22 F) T130 C (266 F) 130 C (266 F) 30 C ( 22 F) mbient Temp.: 30 C to 55 C ( 22 F to 131 F) Note: Grounding resistance of 100Ω or less is necessary. When the optional code is selected, grounding resistance of 10 Ω or less shall be required. 110 C 5 C (15 F) 0 C ( 0 F) 130 C 130 C (266 F) 0 C ( 0 F) mbient : 0 to 55 C ( 0 F to 131 F) ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

9 TIIS Certificate: Size: mm(inch) Wafer Type -** Flange Type -B** 25 (1.0) TC1976 TC (1.5) TC1977 TC (2.0) TC197 TC (2.5) TC1979 TC (3.0) TC19750 TC (.0) TC19751 TC19751 (6.0) TC19753 TC1975 (.0) TC19756 TC19757 Construction: Ex d e [ia] IIC T Converter: Flameproof enclosure and intrinsically safety (ia) Flowtube: Increased safety and intrinsically safety (ia) Electrode: Intrinsically safety (ia) Gas Group nd Class: IIC T Non-intrinsically safety circuit Supply Voltage: 1.7 to 2 V dc Output Signal: to 20 m dc Digital output: ON; 2 V dc, 120 m, OFF; 30 V dc, m llowable Voltage (Um): 250 V ac 50/60Hz, 250 V dc Excitation Circuit: 29 V Intrinsically safety circuit Maximum Voltage (Uo): 1 V Maximum Current (Io): 17 m Maximum Electrical Power (Po): 0.12 W Fluid : 20 to 130 C mbient : 20 to 55 C Grounding: Grounding resistance of 10 Ω or less is necessary for class grounding terminal. Grounding resistance of 100 Ω or less is necessary for Functional grounding terminal. When the optional code is selected, grounding resistance of 10 Ω or less shall be required. Flameproof packing adapter: The specifying optional code G11 is necessary. In case of two flameproof packing adapters, specify optional code G32 with G11. STNDRD PERFORMNCE ccuracy: General-Purpose Use; 9 Vs: Span setting value (m/s) Size in mm (in.) Span in m/s (ft/s) ccuracy 25 to 100 (1 to ) to (6 to ) 0.3 Vs < 1 (1 Vs < 3.3) 1 Vs < 2 (3.3 Vs < 6.7) 2 Vs 10 (6.7 Vs 33) 0.3 Vs < 1 (1 Vs < 3.3) 1 Vs < 2 (3.3 Vs < 6.7) 2 Vs 10 (6.7 Vs 33) ±0.25 cm/s (at indications less than 50% of span) ±(0.0.1/Vs)% of rate (at indications 50% or more of span) ±0.2% of span (at indications less than 35% of span) ±0.5% of rate (at indications 35% or more of span) ±0.16% of span (at indications less than 30% of span) ±0.5% of rate (at indications 30% or more of span) ±0.30 cm/s (at indications less than 50% of span) ±(0.30.2/Vs)% of rate (at indications 50% or more of span) ±0.3% of span (at indications less than 35% of span) ±0.5% of rate (at indications 35% or more of span) ±0.16% of span (at indications less than 30% of span) ±0.5% of rate (at indications 30% or more of span) ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

10 Explosion proof Type; Vs: Span setting value (m/s) Size in mm (in.) Span in m/s (ft/s) ccuracy 25 to 100 (1 to ) to (6 to ) 0.3 Vs < 1 (1 Vs < 3.3) 1 Vs < 2 (3.3 Vs < 6.7) 2 Vs 10 (6.7 Vs 33) 0.3 Vs < 1 (1 Vs < 3.3) 1 Vs < 2 (3.3 Vs < 6.7) 2 Vs 10 (6.7 Vs 33) ±0.30 cm/s (at indications less than 50% of span) ±(0.30.2/Vs)% of rate (at indications 50% or more of span) ±0.3% of span (at indications less than 35% of span) ±0.5% of rate (at indications 35% or more of span) ±0.16% of span (at indications less than 30% of span) ±0.5% of rate (at indications 30% or more of span) ±0.50 cm/s (at indications less than 50% of span) ±(0.5/Vs)% of rate (at indications 50% or more of span) ±0.5% of span (at indications less than 30% of span) ±0.25% of span (at indications from 30% or more to less than 5% of span) 0.5% of rate (at indications 5% or more of span) ±0.2% of span (at indications less than 35% of span) ±0.5% of rate (at indications 35% or more of span) The accuracy of a product before shipment is defined as totalized value at the result of calibration test in our water actual flow test facility. Calibrated conditions in our water actual test facility are as follows: Fluid temperature: 20 ± 10 C mbient temperature: 20 ± 5 C Length of straight runs: 10 D or more on the upstream side; 5 D or more on the downstream side Reference conditions: Similar to BS EN2910 (1993); ISO 910 (1991) 10 ccuracy for Multi-drop of HRT (generally accepted values) Vs: Span setting value (m/s) Size in mm (in.) Span in m/s (ft/s) ccuracy 0.3 Vs < 1 (1 Vs < 3.3) ±(0.0.3/Vs)% of span 1 Vs < 2 (3.3 Vs < 6.7) ± 0.5% of span 25 to (1 to ) 2 Vs 10 (6.7 Vs 33) ± 0.25% of span (at indications less than 50% of span) ± 0.5% of rate (at indications 50% or more of span) Repeatability (Reference): ±0.2% of rate (When the flow velocity is 1.5 m/s toward 2 m/s of setting span) Insulation Resistance: Inspection location Terminal Test voltage Standard Power Supply/Digital Output - Functional Grounding / 500 V DC 100 MΩ or more When the optional code is selected (with the lightning protector), values are as follows. Power Supply/Digital Output - Functional Grounding / 100 V DC 20 MΩ or more Note: Conduct the test according to the instruction manual. Dielectric Strength: Inspection location Power Supply/Digital Output - Functional Grounding Terminal / Test voltage 500 V C Test time 1 min. Standard 25 m or less When the optional code is selected (with the lightning protector), values are as follows. Power Supply/Digital Output - Functional Grounding / 100 V C 1 min. Note: Conduct the test according to the instruction manual. 6 m or less CE Marking: CE marking is affixed on the name plate except for models with any of the following specifications. Optional Code: FF1, CF1, SF2, JF3 Safety Requirement Standards: CN/CS C22.2 No ltitude of installation site: Max. 0 m above sea level Installation category: I Overvoltage category (Installation category) describes a number which defines a transient overvoltage condition. It implies the regulation for impulse withstand voltage. I applies to electrical equipment which is supplied from the circuit when appropriate transient overvoltage control means (interfaces) are provided. ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

11 Pollution degree: 2 Pollution degree describes the degree to which a solid, liquid, or gas which deteriorates dielectric strength or surface resistivity is adhering. 2 applies to normal indoor atmosphere. Normally, only nonconductive pollution occurs. Occasionally, however, temporary conductivity caused by condensation must be expected. Indoor/Outdoor use EMC Conformity Standards: EN Class, Table 2 (For use in industrial locations) EN Pressure Equipment Directive: Module: H Type of Equipment: Piping Type of Fluid: Liquid and Gas Group of Fluid: 1 and 2 (*) General-purpose Use/Explosion Proof Type; MODEL XR025G XR025C XR00G XR00C XR050G XR050C XR065G XR065C XR00G XR00C XR100G XR100C XRG XRC XRG XRC DN (mm) (*1) PS (MPa) (*1) PS DN (MPa mm) CTEGORY (*2) (*) rticle 3 (*3) paragraph II 50 II II II II II 2 00 III *1: PS: Maximum allowable pressure for Flowtube DN: Nominal size *2: Read Table 6 Covered by NNEX II of EC Directive on Pressure Equipment Directive 97/23/EC. *3: Sound Engineering Practice (SEP) *: Models classified in CTEGORY II shall not be used for unstable gases of Group 1. SIL Certification: XR series are certified by TÜV in compliance with the following standards; IEC 6: 0; Part1 to Part7 Functional Safety of Electrical/electronic/programmable electronic safety-related systems; SIL 2 capability for single flowmeter use, SIL 3 capability for dual flowmeter use. 11 NORML OPERTING CONDITIONS mbient : General-purpose USE: 0 to 55 C ( 0 to 131 F) Explosion proof type: In the case of explosion proof type, read description of Enclosure or mbient in HZRUS RE CLSSIFICTION *1: Minimum temperature should also be limited according to minimum fluid temperature of flow tube s specification. Read description of Fluid and Pressure. *2: Indicator operating range: 20 to 55 C ( to 131 F) mbient Humidity: 0 to 100% Lengthy continuous operation at 95% or more is not recommended. Fluid Conductivity: Size 25 to mm (1 to in.): 10 μs/cm or larger Note: Fluids with large flow noise (pure water, fluids with low conductivity and low viscosity such as alcohol) cause the output fluctuation and therefor it is impossible to measure accurately. Output Fluctuation: The output fluctuates depending on the fluid conditions and damping settings. The following table shows the output fluctuation as a rough guideline at flow velocity near 100% of flow span (damping: 5 s) Size 25 to 100 mm (1 to in.) Fluid Conductivity [μs/cm] Fluctuation (% of rate) as a rough guideline Flow Span 2.0 m/s Flow Span.0 m/s % or less 7.0% or less % or less 1.0% or less % or less 0.5% or less % or less 0.5% or less Size to mm (6 to in.) Fluid Fluctuation (% of rate) as a rough guideline Conductivity Flow Span Flow Span [μs/cm] 2.0 m/s.0 m/s % or less Non-recommendation % or less 3.0% or less % or less 1.0% or less % or less 1.0% or less Measurable Flow Rate Range: SI Units (Size: mm, Flow rate: m 3 /h) Size (mm) 0 to Min. Span Flow Rate (0.3 m/s) 0 to Max. Span Flow Rate (10 m/s) 25 0 to m 3 /h 0 to m 3 /h 0 0 to to to to to to to to to.3 0 to to to to to 1,130.9 ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

12 English Units (Size: in., Flow rate: GPM) Size (in.) 0 to Min. Span Flow Rate (1 ft/s) 0 to Max. Span Flow Rate (33 ft/s) to GPM 0 to 77.0 GPM to to to to to to to to to to to.03 0 to to to 979 Fluid and Pressure: The following figure shows maximum allowable fluid pressure for the flowtube. Further fluid pressure should also be limited according to flange rating. Pressure MPa(psi) (50) 2 (290) 1 (15) 0.1 (-1.5) 0 (-0) 25 to 50 mm (1.0 to 2.0 in.) (flange type, wafer type) 65 to mm (2.5 to.0 in.) (flange type, wafer type) * (1)(32) (10) (212) C ( F) 130 (266) *1: For wafer types of 0 to mm (1.5 to.0 in.), and for carbon steel flange types (process connection code: C**) of to mm (6.0 to.0 in.), the minimum fluid temperature is 10 C (1 F). *2: For fluid temperature of the explosion proof type, read descriptions of HZRUS RE CLSSIFIC- TION. Vibration Conditions: 9. m/s 2 or less (frequency of 500 Hz or less) Note: Level of vibration is in conformity with IEC (SM ). void locations with much vibration where the pipe vibration frequency is 500 Hz or more. Such a condition may cause damage to the instrument. CUTIONS FOR INSTLLTION F07.ai Mounting of Flowmeters and Required Length of Straight Runs Based on JIS B 755 and our piping condition test data, we recommend the piping conditions as shown in the following figures. When installing two or more magnetic flowmeters on a single pipe, provide a run of at least 10D between them. Gate valve fully open Reducer pipe 5 D or more 2 D or more 0 is allowable 0 is allowable 10 D or more 2 D or more Tee 90-degree bent D: Flowtube Size Expander pipe Various valves *1: Do not install anything in the flowmeter that may interfere with the magnetic field, electromagnetic force, or flow velocity distribution. *2: straight run may not be required on the downstream side of the flowmeter. However, if a downstream valve or other fitting causes irregularity or deviation in flows, provide a straight run of 2D to 3D on the downstream side. *3: The valves shall be mounted on the downstream side so that deviated flows do not occur in the flowtube and to avoid startup from an empty condition. 12 Maintaining Stable Fluid Conductivity Do not install the flowmeter at a place where fluid conductivity tends to become uneven. If chemicals are fed on the upstream side of a magnetic flowmeter, they may affect the flow-rate s indications. To avoid this situation, it is recommended that the chemical feed ports be located on the downstream side of the flowmeter. If it is unavoidable that chemicals must be fed on the upstream side, provide a sufficient length of straight run (approximately 50D or more) to ensure the proper mixture of fluids. Mounting Position Pipes must be fully filled with liquids. If the pipe is empty, the output fluctuates or the Process larm (Signal Overflow) occurs. The pipe must be fully filled with liquid. Piping shall be designed so as to maintain the flowtube filled with fluids. Vertical mounting is effective in such cases as when fluids tend to separate or solid matter may be precipitated. When employing vertical mounting, direct the fluids from the bottom to the top to ensure that the pipes remain fully filled. Correct h h>0 Incorrect Correct Mounting Positions h h>0 Incorrect F09.ai voiding air bubbles. If air bubbles enter a measurement pipe, the flow rate indication may be affected and measurement errors may occur. If the fluid contains air bubbles, arrange piping to prevent the bubbles from accumulating in a flowtube. Some operations of the valve may cause low pressure and create air bubbles in the pipes, so mount the flowtube on the upstream side of the valve to avoid possible low pressure and air bubbles. Correct Incorrect voiding ir Bubbles Correct Valve Incorrect F10.ai 5 D or more 0 is allowable 5 D or more 0 is allowable 10 D or more Required length of straight runs 2 D or more F0.ai ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

13 Mounting Orientation If electrodes are perpendicular to the ground, air bubbles near the top or precipitates at the bottom may cause measurement errors. Ensure that the converter of an integral flowmeter is mounted above the piping to prevent water from entering them. Correct Electrode Incorrect Electrode ir bubbles Precipitates Mounting Orientation Incorrect Water can seep into the converter. F11.ai Location The flowmeter should be installed away from electrical motors, transformers, inverters, and other power sources in order to avoid interference with measurement. Install the flowmeter in a location where it is not exposed to direct sunlight. Grounding For accurate measurement of flow rate, a reference electric potential needs to be kept in the magnetic flowmeter. Therefore, the magnetic flowmeter should be grounded in accordance with certain specifications (grounding resistance of 100 Ω or less, or 10 Ω or less depending on the selected explosion proof type and option). Grounding is mandatory especially for insulated piping such as PVC-sheathed pipes. If not, the magnetic flowmeter measures the flow incorrectly because the reference electrical potential is floating. Moreover, grounding is also mandatory in the simultaneous outputs of current and pulse. If not, the flowmeter causes a large measurement error because the outputs interfere with each other. pplications For a fluid containing high concentration slurries or hard solids (such as earth and sand, metal powder, and fiber), contact of the solids on the electrode surface will make the output fluctuate. Therefore, two-wire magnetic flowmeters are not suitable for measuring such fluids. It is recommended to use the XF four-wire magnetic flowmeter. In the vicinity of an electrolysis bath, strong stray current may flow in the fluid. It is recommended to use the XF four-wire magnetic flowmeter in such an application. CCESSORIES Centering device (wafer type only): 1 pc. Plug: 1 pc. TERMINL CONFIGURTION ND TERMINL WIRING 13 General-purpose Use/Explosion Proof Type except TIIS: Terminal configuration Terminal wiring ➀ ➁ ➂ ➃ ➄ ➀ No. ➀ Terminal Symbols ➁ ➂ ➃ ➄ TIIS Explosion Proof Type: Terminal configuration Terminal wiring ➁ ➂ ➃ ➄ ➅ ➀ ➀ No. ➀ ➁ ➂ ➃ ➄ ➅ Terminal Symbols Description Functional grounding Power supply and current output Digital output (One output can be selected from pulse, alarm or status outputs.) F12.ai Description Functional grounding Class grounding Power supply and current output Digital output (One output can be selected from pulse, alarm or status outputs.) F12_02.ai Recommended Power and Output Cable: Use polyvinyl chloride insulated and sheathed portable power cables (JIS C3312) or equivalents. Outer Diameter: With no gland option; 6.5 to 12 mm (0.26 to 0.7 in.) With gland options EG and EU; 10.5 or 11.5 mm (0.1 or 0.5 in.) With gland options EP; 6 to 12 mm (0.2 to 0.7 in.) Nominal Cross Section: Single wire: 0.5 to 2.5 mm 2 Stranded wire: 0.5 to 1.5 mm 2 ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

14 1 WIRING EXMPLE (General-purpose Use/Explosion Proof Type except TIIS) Current Output, Pulse Output, Status Output and larm Output (General-purpose Use/Explosion Proof Type except TIIS) Connection Current Output In this case, Communication is possible (up to a distance of 2 km when a CEV cable is used.) XR Terminal Description Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 R3[Ω]:Load Resistance Distributor, etc. R3 E (R1 R2 R3) 1.7 E1 [V] 2 *10 In the case of R3 = 250 [Ω] (R1 R2) 20.6 E1 [V] 2 *10 Pulse Output In this case, No communication is possible when a fourwire cable is used. XR Terminal Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] * (R1R2)1.7 E2[V] 2 *10 E2 R *7 *1 E3:30 V DC max *6 Electric counter Pulse Output In this case, No communication is possible when a threewire cable is used. XR Terminal *1: This supply voltage requires a power source with a maximum output current of no less than E3/R (R1R2)1.7 E[V] 30 Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 *7 R *2 E *6 Electric counter Status Output larm Output In this case, No communication is possible when a fourwire cable is used. Status Output larm Output In this case, No communication is possible when a threewire cable is used. XR Terminal *2: This supply voltage requires a power source with a maximum output current of no less than (E/R0.0236). Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] * R1R2 1.7 E2[V] 2 *10 E2 External Power Supply 30 V DC,120 m max Relay C Power Supply XR Terminal R1R2 1.7 E2[V] 2 *10 Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 External Power Supply 30 V DC,120 m max Relay E2 C Power Supply Magnetic valve Magnetic valve ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

15 15 Simultaneous Current-Pulse Output (General-purpose Use/Explosion Proof Type except TIIS) Connection Simultaneous Current- Pulse Output Example 1 In this case, Communication is possible (up to a distance of 2 km when a CEV cable is used) and when a two-wire shielded cable is used. Example 2 In this case, Communication is possible (up to a distance of 2 km when a CEV cable is used) and when a one-wire shielded cable is used. Description When simultaneous output of current and pulse output are used, no communication is possible in some cases. Read the following example 1 to 3. XR Terminal XR Terminal * * Shielded Cable Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 Shielded Cable For the shielded cables in this example, use two-wire shielded cables separately for and x (R1 R2 R3) 1.7 E1 [V] 2 *10 In the case of R3=250[Ω] x (R1 R2) 20.6 E1 [V] 2 *10 Distributor, etc. No communication is possible when a shielded cable is not used. However, simultaneous current-pulse output is possible. *3: This supply voltage requires a power source with a maximum output current of no less than E3/R. Shielded Cable Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 R3 Shielded Cable For the shielded cables in this example, use two-wire shielded cables separately for and. *7 R Distributor, etc. R3 *7 R E1 *6 Electric counter E1 R3[Ω]:Load Resistance *3 E3:30 V DC max x (R1 R2 R3) 1.7 E1 [V] 2 *10 In the case of R3=250[Ω] x (R1 R2) 20.6 E1 [V] 2 *10 *6 Electric counter R3[Ω]:Load Resistance * E3:30 V DC max Example 3 In this case, No communication is possible when a threewire cable is used. XR Terminal * *: This supply voltage requires a power source with a maximum output current of no less than E3/R. Cable Resistance:R1[Ω] *9 Cable Resistance:R2[Ω] *9 250Ω R *7 *5 E R1R E5[V] 30 Recorder or other instrument *6 Electric counter *5: This supply voltage requires a power source with a maximum output current of no less than (E5/R0.0236). The range of load resistance R for the pulse output The range of load resistance R for the pulse output must basically be 1 kω and 2 W. The load resistance should be selected by calculation as shown below when proper transmission is impossible due to the length of cable or frequency of pulse output. E (V) 0.1 R (kω) (1) 120 C (μf) f (khz) E 2 (V) P (mw) = (2) R (kω) E: Supply voltage (V) f: Frequency of pulse output (khz) R: Value of load resistance (kω) C: Cable capacitance (μf) P: Electrical power of the load resistance (mw) Note: C 0.1 (μf/km) for CEV cable Note: The communication is possible though it might not meet a part of the HRT communication specification depending on use conditions. When using current and pulse output simultareously, the HRT communication may be influenced by noise comparing analog output only. ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation

16 16 The Wiring Examples of Digital External Indicator Using Current Output (General-purpose Use/Explosion Proof Type except TIIS) Connection Current Output Example 1 Connection to digital external indicator XR Terminal - - Relaying terminal - Description Digital External Indicator 77.7% V2 Cable Resistance:R2[Ω] *9 Cable Resistance:R1[Ω] *9 - Cable Resistance:R[Ω] *9 Transmission of XR output might fail when the external indicator breakdown occurs. V2: Voltage between terminals of External Indicator Distributor, etc. R (R1 R2 R3 R) V2 1.7 E1 [V] 2 *10 In the case of R3 = 250 [Ω] (R1 R2 R) V E1 [V] 2 *10 E1 R3[Ω]: Load Resistance Example 2 Connection to analog external indicator nalog External Indicator Internal resistance 10 Ω or less XR Terminal Relaying terminal Cable Resistance:R2[Ω] *9 Cable Resistance:R1[Ω] *9 - Cable Resistance:R[Ω] *9 Transmission of XR output might fail when the external indicator breakdown occurs. Distributor, etc. R3 E1 R3[Ω]: Load Resistance (R1 R2 R3 R 10) 1.7 E1 [V] 2 *10 In the case of R3 = 250 [Ω] (R1 R2 R 10 ) 20.6 E1 [V] 2 *10 *6: To avoid the influence of external noise, use an electric counter which fits to the pulse frequency. *7: Resistor is not necessary in the case of an electric counter which can receive contact pulse signal directly. *: Ground the XR to avoid the current output error in simultaneous current-pulse output. *9: Calculate the cable resistance by using the following as a rough guideline: 10.9 Ω per 1 km for the cable with the cross section of 2 mm 2, 19.5 Ω per 1 km for the cable with the cross section of 1.25 mm 2. *10: The maximum voltage is 32 V DC in the case of Lightning Protector specification (optional code ). ll Rights Reserved. Copyright 9, Yokogawa Electric Corporation