Pressure measurement. Process pressure/hydrostatic VEGAWELL 72. Product Information
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1 Pressure measurement Process pressure/hydrostatic VEGAWELL 7 Product Information
2 Content Content Description of the measuring principle Type overview Mounting instructions Electrical connection. General requirements Voltage supply Connection cable Cable screening and grounding Wiring plan VEGAWELL 7-0 ma Wiring plan VEGAWELL 7-0 ma/hart Wiring plan VEGAWELL 7-0 ma/hart - Pt Operation 5. Overview Adjustment with VEGADIS Adjustment with PACTware Technical data Dimensions Product code Take note of safety instructions for Ex applications Please note the Ex specific safety information which you can find on our homepage and which comes with every instrument. In hazardous areas you should take note of the appropriate regulations, conformity and type approval certificates of the sensors and power supply units. The sensors must only be operated on intrinsically safe circuits. The permissible electrical values are stated in the certificate. Process pressure/hydrostatic Pressure measurement
3 Description of the measuring principle Description of the measuring principle Measuring principle VEGAWELL 7 pressure transmitters work according to the hydrostatic measuring principle, which functions independently of the dielectric properties of the product and is not influenced by foam generation. The sensor element of VEGAWELL 7 is the dry ceramic-capacitive CERTEC measuring cell. Base element and diaphragm consist of high purity sapphire-ceramic. The hydrostatic pressure of the product causes via the diaphragm a capacitance change in the measuring cell. This capacitance change is converted into an appropriate output signal. 6 µm Fig. : Configuration of the CERTEC measuring cell with VEGAWELL 7 Diaphragm Soldered glass bond Base element The advantages of the CERTEC measuring cell are: l Very high overload resistance l No hysteresis l Excellent long-term stability l Completely front flush installation l Good corrosion resistance l Very high abrasion resistance Wide application range VEGAWELL 7 is suitable for level measurement in deep wells and ballast tanks as well as for gauge measurement in open flumes. Typical media are drinking water and waste water as well as water containing abrasive substances. All signal outputs are available in 0 ma and 0 ma/hart. In the 0 ma/hart - Pt 00 version, a temperature sensor Pt 00 in four-wire technology is optionally integrated in the transducer. Power supply or processing are carried out via an external temperature transducer. Process pressure/hydrostatic Pressure measurement
4 Type overview Type overview VEGAWELL 7 Measuring cell: CERTEC Media: drinking water and waste water Process fitting: straining clamp, screwed fitting, thread, flange Material process fitting: 6L Material, suspension cable: PE, PUR, FEP Material transmitter: 6L, 6L with PE-coating, PVDF, Titanium Diameter transmitter: depending on material min. mm Measuring range: 0 0. bar up to 0 5 bar Process temperature: C (- + F) Deviation: < 0. %, < 0.5 %, < 0. % Signal output: 0 ma, 0 ma/hart Operation: depending on the version via VEGADIS or PACTware/PC Process pressure/hydrostatic Pressure measurement
5 Mounting instructions Mounting instructions Mounting position The following illustration shows a mounting example for VEGA- WELL 7. The VEGA price list contains suitable mounting brackets under the section Accessories. With these parts, standard mounting arrangements can be realised quickly and reliably. Mounting with straining clamp Fig. : Straining clamp Suspension cable Suspension opening Clamping jaws Fig. : Version with closing screw in a pump shaft Mounting with screwed fitting VEGAWELL 7 must be mounted in a calm area or in a suitable protective tube. This avoids lateral movements of the transmitter and the resulting corruption of measurement data. Note: As an alternative, we recommend using the instrument holder from the line of VEGA accessories, article no. BARMONT.B, to fasten the transmitter. The suspension cable contains apart from the connection cables and the suspension wire also a capillary for atmospheric pressure compensation. All versions can be shortened on site. With VEGAWELL 7, the electronics is completely integrated in the transmitter. The cable end can be lead directly to a dry connection compartment. Pressure compensation is then carried out via the filter element of the capillaries. Note: The pressure compensation housing VEGABOX 0 is recommended for connecting VEGAWELL 7. It contains a high-quality ventilation filter and terminals. A protective cover is optionally available for use outdoors. Fig. : Threaded fitting Suspension cable Seal screw Cone bushing Seal cone 5 Threaded fitting 6 Seal 5 6 Mounting versions The following illustrations show the different mounting versions depending on the instrument type. Process pressure/hydrostatic Pressure measurement 5
6 Mounting instructions Mounting with housing and thread Fig. 5: Housing with thread G½ A Housing Seal Thread 6 Process pressure/hydrostatic Pressure measurement
7 Electrical connection Electrical connection. General requirements The supply voltage range can differ depending on the instrument version. You can find exact specifications in chapter "Technical data". The national installation standards as well as the valid safety regulations and accident prevention rules must be observed. In hazardous areas you should take note of the appropriate regulations, conformity and type approval certificates of the sensors and power supply units..5 Wiring plan VEGAWELL 7-0 ma Direct connection Fig. 6: Wire assignment, suspension cable. Voltage supply Supply voltage and current signal are carried on the same twowire cable. The requirements on the power supply are specified in chapter "Technical data". The VEGA power supply units VEGATRENN 9AEx, VEGAS- TAB 690, VEGADIS 7 as well as VEGAMET signal conditioning instruments are suitable for power supply. When one of these instruments is used, a reliable separation of the supply circuits from the mains circuits according to DIN VDE 006 part 0 is ensured.. Connection cable blue (-): to power supply or to the processing system brown (+): to power supply or to the processing system Shielding Breather capillaries with filter element Connection via VEGABOX In general An outer diameterof 5 9 mm ensures the seal effect of the cable entry. If electromagnetic interference is expected, screened cable should be used for the signal lines. The sensors are connected with standard two-wire cable without screen. Fig. 7: Terminal assignment VEGABOX 0 To power supply or the processing system Shielding ) Connection via housing In Ex applications, the corresponding installation regulations must be noted for the connection cable. 5. Cable screening and grounding If screened cable is necessary, the cable screen must be connected on both ends to ground potential. If potential equalisation currents are expected, the connection on the evaluation side must be made via a ceramic capacitor (e.g. nf, 500 V). 6 ) Fig. 8: Terminal assignment of the housing To power supply or the processing system Connect screen to ground terminal. Connect ground terminal on the outside of the housing as prescribed. The two terminals are galvanically connected. Process pressure/hydrostatic Pressure measurement 7
8 Electrical connection.6 Wiring plan VEGAWELL 7-0 ma/ HART Connection via housing Direct connection Fig. 9: Wire assignment, connection cable brown (+): to power supply or to the processing system blue (-): to power supply or to the processing system yellow: is only required with VEGADIS, otherwise connect to minus or with VEGABOX 0 to terminal ) Shielding 5 Breather capillaries with filter element Fig. : Terminal assignment of the housing To power supply or the processing system Connection via VEGADIS.7 Wiring plan VEGAWELL 7-0 ma/ HART - Pt 00 TRANSMITTER OPERATE ti Direct connection 5 SPAN ZERO TRANSMITTER Fig. 0: Terminal assignment, VEGADIS NOT USED...0mA + VEGADIS Voltage supply and signal output Control instrument ( 0 ma measurement) + + Fig. : Wire assignment, connection cable blue (-): to power supply or to the processing system brown (+): to power supply or to the processing system white: for processing of the integrated Pt 00 (power supply) Yellow: for processing of the integrated Pt 00 (measurement) 5 Red: for processing of the integrated Pt 00 (measurement) 6 Black: for processing of the integrated Pt 00 (power supply) 7 Shielding 8 Breather capillaries with filter element ) For customer-specific versions, already connected with blue (-) when shipped. 8 Process pressure/hydrostatic Pressure measurement
9 Electrical connection Connection via VEGABOX 0 Connection via housing Fig. : Terminal assignment VEGABOX 0 To power supply or the processing system (signal pressure transmitter) To power supply or the processing system (connection cables resistance thermometer Pt 00) Shielding ) Connection via VEGABOX 0 with integrated temperature sensor ma Fig. 5: Terminal assignment of the housing To power supply or the processing system (signal pressure transmitter) For voltage supply or to processing system (resistance thermometer Pt 00) Shielding 5) Fig. : Terminal assignment VEGABOX 0 To power supply or the processing system (signal pressure transmitter) For voltage supply or to processing system (resistance thermometer Pt 00) Shielding ) ) ) 5) Connect screen to ground terminal. Connect ground terminal on the outside of the housing as prescribed. The two terminals are galvanically connected. Connect screen to ground terminal. Connect ground terminal on the outside of the housing as prescribed. The two terminals are galvanically connected. Connect screen to ground terminal. Connect ground terminal on the outside of the housing as prescribed. The two terminals are galvanically connected. Process pressure/hydrostatic Pressure measurement 9
10 Operation 5 Operation 5. Overview VEGAWELL 7 0 ma VEGAWELL 7-0 ma has no adjustment options. 5. Adjustment with PACTware Connecting the PC to the signal cable VEGAWELL 7 0 ma/hart l Indication/Adjustment VEGADIS l Adjustment software according to FDT/DTM standard, e.g. PACTware and PC l HART handheld VEGAWELL 7 0 ma/hart - PT 00 l Adjustment software according to FDT/DTM standard, e.g. PACTware and PC l HART handheld 5. Adjustment with VEGADIS VEGADIS is connected directly to the connection or suspension cable of VEGAWELL 7-0 ma/hart. It is looped into the supply and signal circuit and requires no separate external energy. TRANSMITTER OPERATE ti ZERO Fig. 7: Connection of the PC to VEGADIS or t the communication resistor PC with PACTware RS connection VEGACONNECT Communication resistor 50 Ω 5 Power supply unit 5 SPAN TRANSMITTER mA not used + VEGADIS Fig. 6: Adjustment elements of VEGADIS Rotary switch: choose the requested function [+] key change value [-] key change value Necessary components: l VEGAWELL 7 l PC with PACTware and suitable VEGA DTM l VEGACONNECT with HART adapter cable l HART resistor approx. 50 Ω l Power supply unit Note: With power supply units with integrated HART resistance (internal resistance approx. 50 Ω), an additional external resistance is not necessary (e. g. VEGATRENN 9A, VEGAMET 8/6/65, VEGASCAN 69). In such cases, VEGACONNECT can be connected parallel to the 0 ma cable. 0 Process pressure/hydrostatic Pressure measurement
11 Technical data 6 Technical data Materials and weights Materials, wetted parts - Transmitter 6L, 6L with PE coating,.6,.6 with PE coating, PVDF, Titanium - Protective cap PA, PE - Diaphragm sapphire ceramic (99.9 % oxide ceramic) - Measuring cell seal FKM (FDA and KTW approved), FFKM - Suspension cable PE (FDA and KTW-approved), FEP, PUR - Cable gland on the transmitter 6L - Cable seal with PE, PUR cable FKM - Cable seal with FEP cable FEP - Process fitting 6L - Straining clamp.0 - Unassembled threaded fitting 6L, PVDF - Threaded connection on the housing 6L Materials, non-wetted parts - Housing plastic PBT (Polyester), 6L - type label support on cable PE hard - transport protection net PE Weight approx. - Basic weight 0.8 kg (.76 lbs) - Suspension cable 0. kg/m (0.07 lbs/ft) - Straining clamp 0. kg (0. lbs) - Threaded fitting 0. kg (0.88 lbs) - Plastic housing 0.8 kg (.76 lbs) Input variable Measured value Level Measuring range see product code Recommended max. turn down 0 : Output variable 0 ma Output signal 0 ma Signal resolution µa Failure signal ma Max. output current ma Run-up time s Step response time 00 ms (ti: 0 s, 0 6 %) Fulfilled NAMUR recommendations NE 0 ma/hart, 0 ma/hart - PT 00 Output signal 0 ma/hart Signal resolution µa Failure signal <.6 ma; 0.5 ma; ma; unchanged (adjustable via PACTware) Max. output current ma Run-up time 5 s Step response time 00 ms (ti: 0 s, 0 6 %) Fulfilled NAMUR recommendations NE Additional output parameter - temperature integrated resistance thermometer Pt 00 according to DIN EN 6075 Range C (-58 + F) Resolution K Deviation for 0 ma version 6) 6) Specifications refer to the set span. Turn down (TD) = nominal measuring range/set span. Determined according to the limit point method according to IEC 60770, incl. non-linearity, hysteresis and non-repeatability. Process pressure/hydrostatic Pressure measurement
12 Technical data Deviation - Turn down : up to 5 : < 0. % - Turn down > 0 : < 0.0 % x TD Deviation for 0 ma/hart and 0 ma/hart - Pt 00 version 7) Applies to digital HART interface as well as to analogue current output 0 ma. Specifications refer to the set span. Turn down (TD) is the relation nominal measuring range/set span. Deviation with version < 0.5 % - Turn down : up to 5 : < 0.5 % - Turn down > 0 : < 0.5 % x TD Deviation with version < 0. % - Turn down : up to 5 : < 0. % - Turn down > 0 : < 0.0 % x TD Influence of the product or ambient temperature Applies to digital HART interface as well as to analogue current output 0 ma. Specifications refer to the set span. Turn down (TD) is the relation nominal measuring range/set span. Average temperature coefficient of the zero signal In the compensated temperature range of C (+ +76 F), reference temperature 0 C (68 F). Average temperature coefficient of the zero signal - Turn down : < 0.05 %/0 K - Turn down : up to 5 : < 0. %/0 K - Turn down > 0 : < 0.5 %/0 K Outside the compensated temperature range Average temperature coefficient of the zero signal - Turn down : typ. < 0.05 %/0 K Thermal change of the current output Applies also to the analogue 0 ma current output and refers to the set span. Thermal change, current output < 0.5 % at C ( F) Long-term stability (similar to DIN 6086, DINV 959- and IEC ) Applies to digital HART interface as well as to analogue current output 0 ma. Specifications refer to the set span. Turn down (TD) is the relation nominal measuring range/set span. Long-term drift of the zero signal < (0. % x TD)/year Ambient conditions Ambient temperature - Connection cable PE C (-0 +0 F) - Connection cable PUR, FEP C ( F) Storage and transport temperature C (- +76 F) Process conditions 7) 8) 9) Process pressure Max. process pressure, transmitter - with measuring ranges 0. bar (.5 psig) or 0. bar (.9 psig) max. 5 bar (7.6 psig) or max. 0 bar (90 psig) 8) - with meas. ranges from 0. bar (5.8 psig) 5 bar (6 psig) 9) Pressure stage, process fitting - Unassembled threaded fitting 6L: PN, PVDF: unpressurized - Thread on the housing PN Determined according to the limit point method according to IEC 60770, incl. non-linearity, hysteresis and non-repeatability. Limited by the overpressure resistance of the measuring cell. Limitation by the pressure-tightness of the cable connection. Process pressure/hydrostatic Pressure measurement
13 Technical data Suspension cable Measuring cell seal Product temperature PE FKM C (- +0 F) PUR FKM C (- +76 F) PUR FFKM C (- +76 F) FEP FFKM C (+ +76 F) Connection tube Measuring cell seal Product temperature 6L FFKM C (- + F) Transmitter protection Measuring cell seal Product temperature PVDF FFKM C ( +0 F) PE FKM C (- +0 F) PE FFKM C (+ +0 F) Vibration resistance mechanical vibrations with g and 5 00 Hz 0) Electromechanical data Suspension cable - Configuration four wires, one suspension cable, one breather capillary, screen braiding, foil, mantle - Wire cross-section 0.5 mm² (AWG 0) - Wire resistance 0.06 Ω/m - Tensile strength 00 N (70 pound force) - Max. length 000 m (80 ft) ) - Min. bending radius 5 mm (with 5 C/77 F) - Diameter approx. 8 mm (0.5 in) - colour (non-ex/ex) - PE black/blue - colour (non-ex/ex) - PUR, FEP blue/blue Cable entry, housing or VEGABOX 0/VEGADIS x cable gland M0 x.5 (cable: ø 5 9 mm), x blind stopper M0 x.5 Screw terminals for wire cross section.5 mm² (AWG 6), screen up to mm² (AWG ) Supply voltage - 0 ma Supply voltage - Non-Ex instrument V DC - EEx-ia instrument V DC Permissible residual ripple - < 00 Hz U ss < V - 00 Hz 0 khz U ss < 0 mv Load see diagram 0) ) Tested according to the regulations of German Lloyd, GL directive. With VEGADIS : 00 m (656 ft). Process pressure/hydrostatic Pressure measurement
14 Technical data Ω , V Fig. 8: Voltage diagram meaningless Voltage limit Ex instrument Voltage limit non-ex instrument Supply voltage Supply voltage - 0 ma/hart Supply voltage - Non-Ex instrument 6 V DC - EEx-ia instrument 9 V DC Permissible residual ripple - < 00 Hz U ss < V - 00 Hz 0 khz U ss < 0 mv Load see diagram Ω V Fig. 9: Voltage diagram 0 ma/hart HART load Voltage limit Ex instrument Voltage limit non-ex instrument Supply voltage Supply voltage - 0 ma/hart - Pt 00 Supply voltage - Non-Ex instrument V DC - EEx-ia instrument V DC Permissible residual ripple - < 00 Hz U ss < V - 00 Hz 0 khz U ss < 0 mv Load see diagram Process pressure/hydrostatic Pressure measurement
15 Technical data Ω , V Fig. 0: Voltage diagram HART load Voltage limit Ex instrument Voltage limit non-ex instrument Supply voltage Electrical protective measures Protection - Transmitter IP 68 (5 bar) - Housing IP 66/IP 67 - VEGABOX 0, VEGADIS IP 65 Overvoltage category III Protection class III Existing approvals or approvals applied for )) ATEX ATEX II G EEx ia IIC T6 IEC IEC Ex ia IIC T6 PTB Ex-Zone Ship approvals GL, LRS, ABS, CCS, RINA, DNV Others WHG CE conformity EMC (89/6/EWG) Emission EN 66: 997/A: 998 (class B), susceptibility EN 66: 997/A: 998 LVD (7//EWG) EN 600-: 99 Environmental instructions VEGA environment management system certified according to DIN EN ISO 00 You can find detailed information under ) ) Deviating data in Ex applications: see separate safety instructions. You can find detailed information under Process pressure/hydrostatic Pressure measurement 5
16 L Dimensions 7 Dimensions VEGAWELL 7 - suspension cable ~ 69 mm ( /") ø 77 mm ( /") 8mm ( 57/6") mm (55/6") mm ( /") M0x,5/ ½ NPT SW6 75mm (6 57/6") 5mm ( /6") 8,5mm mm ( /6") (5/6") SW0 G ½A/ NPT ½ 67mm ( /6") 0mm (5/") mm ( /6") SW6 G ½A/ NPT ½ G ½A/ NPT ½ ø 8mm (5/6") 6mm (8 /") ø mm ( 7/6") 7mm (8 5/6") ø mm ( 7/6") 0mm (9 9/6") ø 6mm ( 7/6") 8mm (8 7/6") ø mm ( 7/6") 6mm (8 /") ø mm ( 7/6") 5 Fig. : VEGAWELL 7-0 ma/hart - suspension cable with straining clamp Deep well version with unassembled threaded fitting G½ A (½ NPT) and closing cap with PE plastic coating Transmitter with screwed connection of PVDF 5 With thread G½ A (½ NPT) and housing 6 Process pressure/hydrostatic Pressure measurement
17 Product code 8 Product code VEGAWELL 5 WELL7. Approval XX without XM Ship approval AX ATEX II G EEx ia IIC T6 AM ATEX II G EEx ia IIC T6 + Ship approval Version A PE suspension cable ) D PUR suspension cable ) B FEP suspension cable ) Process fitting / Material X Without / 6L A Straining clamp /.0 GA Screwed connection G½A PN / 6L GB Screwed connection ½NPT PN / 6L GI Plastic housing G½A with threaded fitting Transmitter protection X Without P PE-plastic coating ø6mm V Special version for deep wells Deviation in characteristics ) Pressure / Measuring range A rel. / bar (0...0 kpa) B rel. / bar (0...0 kpa) C rel. / bar (0...0 kpa) D rel. / 0... bar ( kpa) E rel. / bar ( kpa) F rel. / bar ( kpa) G rel. / bar ( kpa) H rel. / bar ( kpa) abs. / 0...bar (0...00kPa) abs. / 0...5bar (0...50kPa) abs. / 0...5bar ( kPa) abs. / 0...0bar ( kPa) 5 abs. / 0...5bar ( kPa) Electronics H...0mA/HART C...0mA Length K 6m PE suspension cable L m PE suspension cable M 7m PE suspension cable T Special length (PE,PUR,FEP) ) Measuring cell seal FKM(Viton) ) Measuring cell seal Kalrez ) Only in conjunction with HART electronics Process pressure/hydrostatic Pressure measurement 7
18 8 Process pressure/hydrostatic Pressure measurement
19 Process pressure/hydrostatic Pressure measurement 9
20 VEGA Grieshaber KG Am Hohenstein 7776 Schiltach Germany Phone Fax You can find at downloads of the following l operating instructions manuals l menu schematics l software l certificates l approvals and much, much more Subject to change without prior notice
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