SITRANS P. Transmitters for level. Introduction 1/42. Application

Transcription

1 Introduction HK series S series Fig. / transmitters for level, with built-in analog indicator or digital display Application The transmitter with mounting flange measures the level of corrosive and non-corrosive liquids in open and closed containers. ifferent spans are possible depending on the version. The nominal mounting flange diameter is N 8 or N, or or es. In the case of level measurements in open containers, the lowpressure connection of the measuring cell remains open (measurement with respect to atmosphere), while for measurements in closed containers, this connection must be connected to the container in order to compensate the static pressure. The wetted parts are constructed from a variety of materials depending on the degree of corrosion resistance required (see Technical data). HK series S series 7 6 mc M M I A, U H The output signal is a load-independent direct current of to ma linearly proportional to the level (hydrostatic pressure), or a digital bus signal Transmitters conforming to the type of protection "Intrinsic safety" and "Explosion-proof" may be installed within potentially explosive atmospheres (zone ). The conformity certificate corresponds to the European standard (CENELEC) Adjustable spans Series HK S S (PA) Span in mbar to, Measuring cells from to, mbar Types of protection and conformity certificates Series Type of protection Conformity certificate Intrinsic Explosionproof CENELEC FM/CSA safety HK S S (PA) Exists } Fig. / Functional diagram + ifferential pressure - as input variable I A Output signal U H Power supply Seal diaphragm of mounting flange Flange with tube Capillary with filling liquid of mounting flange Seal diaphragm of meas. cell Measuring cell body 6 Overload diaphragm 7 Silicon pressure sensor 8 O-ring 9 Process flange Filling liquid of measuring cell Instrument amplifier Analog-to-digital converter Microcontroller igital-to-analog converter or PROFIBUS-PA interface igital display for parameterization 6 Keys for parameterization 7 Analog indicator (option) 8 igital display for parameterization and measured value / Siemens FI

2 Introduction Mode of operation Elements for parameterization of transmitter The input pressure (hydrostatic pressure) acts on the measuring Parameterization using HK S cell via the seal diaphragm (, Fig. /) of the mounting flange. external keys The differential pressure present on the measuring cell is applied via the seal diaphragm () and the filling liquid in the measuring Built-in digital display cell body () to the silicon pressure sensor (7) whose measuring diaphragm is then flexed. The resistance of four piezo-resistors fitted in the diaphragm in Laptop, PC HART communicator PROFIBUS-PA interface a bridge circuit thus changes. This change in resistance results in a bridge output voltage proportional to the differential pressure. This voltage is amplified and converted into a digital signal Adjustable parameters which can also be displayed by means of an analog-to-digital converter (). This signal is evaluated by a microcontroller (), and its linearity Start-of-scale and full-scale values with application of a pressure and temperature response corrected. HK S Start-of-scale and full-scale values without application of a pressure ("Blind setting") The signal processed in this manner is converted in a digital-toanalog converter () into an output current of to ma, or via amping the PROFIBUS-PA interface into a digital bus signal. Current transmitter function v The data specific to the measuring cell as well as the data for parameterization of the transmitter are stored in a non-volatile EE- Zero adjustment Output signal in event of fault PROM. isabling of keys for operation Parameterization Measured-value display in % or ma Measured-value display of physical unit epending on the version, there are different possibilities for parameterizing the transmitter and for setting or scanning the parameters. Parameterization using the input keys (local operation) The input keys can be used to simply set the most important parameters without any additional equipment. Parameterization using HART communicator When parameterizing with the HART communicator, the connection is made directly to the two-wire system (Fig. /). When parameterizing with a laptop or PC, the connection is made via a HART modem (Fig. /6). The signals required for communication according to the HART protocol.x are superimposed on the output current according to frequency shift keying (FSK). Measuring-point number (abbreviation, max. 6 characters) Measuring-point description (max. 7 characters) Message Range limits Transmitter version (e.g. material) Slave pointer (only PROFIBUS-PA) Further displays and parameters Possible + transmitter HART communicator to W Power supply Fig. / Communication between HART communicator and transmitter Parameterization via PROFIBUS-PA interface transmitters with a PROFIBUS-PA interface (Fig. /7) are parameterized, starting from a master, using signals transmitted via PROFIBUS-P and converted by a SIMATIC P/PA coupler with power supply into a signal for PROFIBUS-PA. A bus terminator is required for cable lengths > m. transmitter HART modem to W PC or Laptop Power supply Master PROFIBUS-P Coupler with power supply + PROFIBUS-PA... T Bus terminator RS Transmitter with PROFIBUS-PA interface Fig. /6 Communication between PC or laptop and transmitter Fig. /7 Communication via PROFIBUS-PA interface Siemens FI /

3 Technical data Technical data HK 7MF6 S 7MF6 Application See page / Mode of operation Measuring principle Input Measured variable Measuring range See page / Piezo-resistive Level S with PROFIBUS-PA 7MF6 Span (continuously adjustable) - % and + % of max. span Lower measuring limit - % of max. span - % of max. span Upper measuring limit + % of max. span + % of max. span Start-of-scale (continuously adjustable) Between the measuring limits Between the measuring limits Minimum static pressure mbar (absolute) Output Output signal to ma to ma igital bus signal Lower limit.8 ma.8 ma igital status signal Upper limit ma. or ma igital status signal Electric damping - Adjustable time constant to s Current transmitter Adjustable to.6,.,.,. or.8 ma Adjustable from.6 to.8 ma Signal on alarm.6 or.8 ma.6 or.8 ma igital status signal Load Without HART communication R B ˆ (U H - V)/. A in W, U H : power supply in V R B ˆ (U H - V)/. A in W, U H : power supply in V With HART communication R B = to / W Characteristic Linear Linear Accuracy Reference conditions Error in measurement (including hysteresis and repeatability) Repeatability Hysteresis Response time (T 6, without electric damping) Long-term drift Start-of-scale value bar, silicone oil filling and mounting flange without tube, limit point setting. r = max. span/set span ˆ. % ˆ. % at r ˆ ˆ. % ˆ. % at < r ˆ (. r +.). % at < r ˆ Included in error in measurement ˆ. % / months with max. span Included in error in measurement Approx.. s ˆ. % / months with max. span Ambient temperature effect At - to +6 C - -mbar cell ˆ (. r +.) % ˆ (. r +.*)) % ˆ.7 % - 6-mbar cell ˆ (. r +.) % ˆ (. r +.*)) % ˆ. % - 6- and -mbar cells ˆ (. r +.) % ˆ (. r +.*)) % ˆ. % ˆ. % / months At - to - C and +6 to +8 C - -mbar cell ˆ (. r +.) % / K ˆ (. r +.*)) % / K ˆ. % / K - 6-mbar cell ˆ (. r +.) % / K ˆ (. r +.*)) % / K ˆ. % / K - 6- and -mbar cells ˆ (. r +.) % / K ˆ (. r +.*)) % / K ˆ.7 % / K Static pressure effect On start-of-scale value - -mbar cell ˆ. % r per nominal pressure - 6-mbar cell ˆ. % r per nominal pressure - 6- and -mbar cells ˆ. % r per nominal pressure On span ˆ. % r per nominal pressure Influence of mounting position Influence of power supply None ˆ. % per V change in voltage *). instead of. and. instead of. for < r ˆ. / Siemens FI

4 Technical data Technical data HK 7MF6 S 7MF6 S with PROFIBUS-PA 7MF6 Rated operating conditions Installation conditions Installation instructions Mounting position dependent on flange Ambient conditions Ambient temperature (observe temperature class in potentially explosive atmospheres) - Measuring cell - to +8 C - igital display - to +8 C - to +8 C Ambient temperature limits See ambient temperature Storage temperature - to -8 C Climate class - Condensation Permissible egree of protection (to EN 6 9) IP 6 Electromagnetic compatibility - Emitted interference To EN 8- - Noise immunity To EN 8- and NAMUR NE Medium conditions Process temperature -At P abs bar - to +8 C -At P abs < bar - to +8 C Process temperature limits See process temperature Process pressure limits Nominal pressure (PN) esign Weight (transmitter with mounting flange (without tube)) To IN Approx. to kg To ANSI Approx. to 8 kg imensions See Fig. /8 See Fig. /9 See Fig. /9 Material Wetted parts materials - High-pressure side Seal diaphragm of mounting flange Stainless steel, mat. No..7, Monel, mat. No..6, Hastelloy B, mat. No..67, Hastelloy C76, mat. No..89, Hastelloy C, mat. No..6, tantalum, PTFE, ECTFE Sealing face Smooth to IN 6, form or ANSI B6. RF for stainless steel, mat. No..7 IN 6, form E or ANSI B6. RFSF for other materials - Low-pressure side Seal diaphragm Stainless steel, mat. No.. Process flanges and sealing screw Stainless steel, mat. No..8 Connection shank Stainless steel, mat. No.. O-ring FPM (Viton) Non-wetted parts materials - Electronics housing ie-cast aluminium, low in copper, G-ALSi, polyesterbased lacquer, stainless steel rating plate ie-cast aluminium, low in copper, G-ALSi, or stainless steel precision casting, polyester-based lacquer, stainless steel rating plate - Process flange screws Steel, galvanized and yellow-passivized, or stainless steel - Mounting bracket (option) Steel, galvanized and yellow-passivized, or stainless steel - Sealing material in the process flanges For vacuum applications Copper For other applications Viton Filling liquid Measuring cell Silicone oil Mounting flange Process connection High-pressure side Low-pressure side Silicone oil or other material ie-cast aluminium, low in copper, G-ALSi, or stainless steel precision casting, polyester-based lacquer, stainless steel rating plate Flange to IN and ANSI Female thread ¼ - 8 NPT and flange connection to IN 9 with mounting thread M or 7 / 6 - UNF Electrical connection Screw terminals, cable inlet via screwed gland Pg. (adapter), M x. or ½ - NPT, or Han 7/Han 8U plug Screw terminals, cable inlet via screwed gland Pg. (adapter), M x. or ½ - NPT, or Han 7/Han 8U plug Screw terminals, cable inlet via screwed gland M x. or ½ - NPT Siemens FI /

5 Technical data Technical data isplays and controls Input keys Analog indicator (option) HK 7MF6 S 7MF6 for local programming directly on transmitter Linear scale to % or Linear scale to % or customer-specific scale customer-specific scale S with PROFIBUS-PA 7MF6 igital display Yes Yes Power supply Terminal voltage on transmitter C to V C to V in intrinsically-safe mode C to V C to V in intrinsically-safe mode Provided via bus C 9 to V C 9 to V in intrinsically-safe mode Ripple U pp ˆ. V (7 to Hz) Noise U rms ˆ. mv (. to khz) Certificates and approvals CENELEC To IN EN, IN 8 and IN EN Intrinsic safety EEx ia IIC T or T or T6 EEx ia IIC T or T or T6 EEx ib IIC T - Conformity certificate PTB No. Ex-9.C.6 PTB No. Ex-9.C.9 PTB No. Ex Max. ambient temperature +8 C temp. class T +7 C temp. class T +6 C temp. class T6 - Connection to certified intrinsically-safe circuits with maximum values U o = V I k = ma P = 7 mw +8 C temp. class T +7 C temp. class T +6 C temp. class T6 U o = V I k = ma P = 7 mw +8 C temp. class T U o = 7. V I k = 8 ma P =.8 W - Effective internal inductance L i ˆ.6 mh L i ˆ.6 mh L i ˆ 7. µh - Effective internal capacitance C i ˆ 6 nf C i ˆ 8 nf C i ˆ.6 nf Explosion-proof EEx d IIC T and T6 EEx d IIC T and T6 - Conformity certificate PTB No. Ex-9.C. PTB No. Ex-9.C. - Max. ambient temperature +8 C temp. class T +7 C temp. class T6 +8 C temp. class T +7 C temp. class T6 TÜV To IN VE 6/.9, Section 6. Ex-approved zone n Ex n V II T - Registration number 8//9/6 8//9/6 TÜV 97 ATEX 7 /6 Siemens FI

6 Technical data Technical data S 7MF6 S with PROFIBUS-PA 7MF6 Communication Load when connecting a HART communicator to W - HART modems to W - Cable -wire screened: ˆ. km Multi-core screened: ˆ. km Protocol HART, Version.x Layers and according to PROFIBUS-PA Intrinsically-safe to IEC 8- Slave function Layer 7 (protocol layer) according to PROFI- BUS-P functions (all data acyclic, measured value and status cyclic in addition) PC/laptop requirements IBM-compatible, main memory > Mbyte, hard disk > 7 Mbyte, RS interface, VGA graphics Software for PC/laptop WINOWS 9/NT. and SIMATIC PM evice and remote control functions More than parameters according to PROFIBUS-PA profile evice profile taking into account previous HART functions for Measuring-point designation evice organization evice type evice materials Hardware and firmware versions Sensor data Adjustment points Type and materials of process connection Sensor temperature Limit monitoring Slave pointer functions Alarm signalling Status information Filter time Measured value in selectable dimension evice address when delivered Current consumption of device Approx. 8 ma Electronic current limiting I max ˆ 7 ma in event of fault, output twice Measured-value resolution x - referred to full-scale value Siemens FI /7

7 7MF6, HK series. transmitter for level, HK series Two-wire system, including Instruction Manual (in same language as rating plate; see "Further designs"), sealing screw (same material as process flange), measuring cell filling: silicone oil, measuring cell cleaning: normal (please order mounting flange 7MF9-... separately, see page /) Span to mbar 6 to 6 mbar 6 to, mbar to, mbar Process connection of low-pressure side Female thread ¼ - 8 NPT and flange connection to IN 9 Mounting thread M Mounting thread 7 / 6 - UNF Non-wetted parts materials Process flange Electronics housing screws Steel ie-cast aluminium Stainless steel ie-cast aluminium Explosion protection Without explosion protection With explosion protection (CENELEC) Type of protection: "Intrinsic safety" (EEx ia) Use in zone n (TÜV) Electrical connection/cable inlet Screwed gland Pg. (adapter) Screwed gland M x. Screwed gland ½ - NPT Han 7 plug Indicator Without Housing cover with analog indicator - Scale to %, linear divisions - Scale as specified (Order code Y required) Order No. 7MF6-7 Y E F G A B E A B C Further designs Please add "Z" to Order No. and specify Order code(s). Han 7 plug (metal, gray) Han 8U plug (instead of Han 7) Sealing screw (¼ - 8 NPT) with valve in material of process flange Rating plate inscription (instead of German) English French Spanish Italian Manufacturer s test certificate M to IN, Part 8, and to ISO 9 Acceptance test certificate B to IN 9/EN -.B Factory certificate to IN 9-./EN -. Use In zone / (basic unit EEx ia) In zone (basic unit EEx ia) Over-filling safety device for flammable and non-flammable liquids (max. PN ) (basic unit EEx ia) Interchanging of process connection side (high-pressure side: left, low-pressure side: right) See page / for four-wire system Order code A A A B B B B C C C E E E8 H Additional information Please add "Z" to Order No. and specify Order code(s) and plain text. Measuring range to be set, plain text with linear characteristic: Y Y:... to... mbar, bar, kpa, MPa Measuring-point number/identification (max. 6 characters), Y:... Y Measuring-point text (max. 7 characters), Y6:... Y6 Customer-specific scale for analog indicator, Y:... to... mbar, bar, kpa, MPa Y Ordering note:st order item: Transmitter 7MF6-... nd order item: Mounting flange 7MF9-... Only the setting for "Y" can be made in the factory. Power supply units: see page /. Example for ordering: Item line :7MF6-EY-AA-Z B line:y C line:y: 8 to mbar Item line :7MF9-GE /8 Siemens FI

8 . transmitter for level, S series Two-wire system, including Instruction Manual (in same language as rating plate; see "Further designs"), sealing screw (same material as process flange), measuring cell filling: silicone oil, measuring cell cleaning: normal (please order mounting flange 7MF9-... separately, see page /) Span to mbar to 6 mbar to,6 mbar 6 to, mbar Process connection of low-pressure side Female thread ¼ - 8 NPT and flange connection to IN 9 Mounting thread M Mounting thread 7 / 6 - UNF Non-wetted parts materials Process flange Electronics housing screws Steel ie-cast aluminium Stainless steel ie-cast aluminium Stainless steel Stain. steel precision casting Explosion protection Without explosion protection With explosion protection (CENELEC) Type of protection: - "Intrinsic safety" (EEx ia) - "Explosion-proof" (EEx d) ) - "Intrinsic safety and explosion-proof" (EEx ia and EEx d) ) Use in zone n (TÜV) Electrical connection/cable inlet Screwed gland Pg. (adapter) ) Screwed gland M x. Screwed gland ½ - NPT Han 7 plug ) Indicator Basic version with housing cover without window (built-in digital display hidden) Housing cover with analog indicator - Scale to %, linear divisions - Scale as specified (Order code Y required) Housing cover with window (built-in digital display visible) Order No. 7MF Y E F G A B P E A B C 6 Further designs Please add "Z" to Order No. and specify Order code(s). 7MF6, S series Han 7 plug (metal, gray) Han 8U plug (instead of Han 7) Sealing screw (¼ - 8 NPT) with valve in material of process flange Rating plate inscription (instead of German) English French Spanish Italian Manufacturer s test certificate M to IN, Part 8 and to ISO 9 Acceptance test certificate B to IN 9/EN -.B Factory certificate to IN 9-./EN -. Setting of upper limit of output signal to. ma IP 68 (not together with Han 7, Han 8U or Pg. plug) Use in zone (basic unit EEx ia) Over-filling safety device for flammable and non-flammable liquids (max. PN ) (basic unit EEx ia) Interchanging of process connection side (high-pressure side: left, low-pressure side: right) See page / for four-wire system Only the settings for "Y" and "" can be made in the factory. See page /8 for example for ordering Power supply units: see page /. Order code A A A B B B B C C C E E8 H Additional information Please add "Z" to Order No. and specify Order code(s) and plain text. Measuring range to be set, plain text with linear characteristic: Y:... to... mbar, bar, kpa, MPa Y Measuring-point number/identification (max. 6 characters), Y:... Y Measuring-point text (max. 7 characters), Y6:... Y6 Customer-specific scale for analog indicator, Y:... to... mbar, bar, kpa, MPa Y ) Without cable gland. ) Not together with type of protection "Explosion-proof". Siemens FI /9

9 7MF6, S series with PROFIBUS-PA. transmitter for level, S series with PROFIBUS-PA Two-wire system, including Instruction Manual (in same language as rating plate; see "Further designs"), sealing screw (same material as process flange), measuring cell filling: silicone oil, measuring cell cleaning: normal (please order mounting flange 7MF9-... separately, see page /) Span Up to mbar Up to 6 mbar Up to,6 mbar Up to, mbar Process connection of low-pressure side Female thread ¼ - 8 NPT and flange connection to IN 9 with Mounting thread M Mounting thread 7 / 6 - UNF Non-wetted parts materials Process flange Electronics housing screws Steel ie-cast aluminium Stainless steel ie-cast aluminium Stainless steel Stain. steel prec. casting Explosion protection Without explosion protection With explosion protection Type of protection: "Intrinsic safety" (EEx d) ) Use in zone n (TÜV) With explosion protection (FM) Explosion-proof (xp) ) With explosion protection EEx ib Electrical connection/cable inlet Screwed gland M x. Screwed gland ½ - NPT Indicator Basic version with housing cover without window (built-in digital display hidden) Housing cover with window (built-in digital display visible) Order No. 7MF6- - 7Y Z P E F G A E GC Q B C 6 Further designs Please add "Z" to Order No. and specify Order code(s). Sealing screw (¼ - 8 NPT) with valve in material of process flange Rating plate inscription (instead of German) English Manufacturer s test certificate M to IN, Part 8 and to ISO 9 Acceptance test certificate B to IN 9/EN -.B Factory certificate to IN 9-./EN -. IP 68 Interchanging of process connection side (high-pressure side: left, low-pressure side: right) See page /8 for example for ordering Order code A B C C C H Additional information Please add "Z" to Order No. and specify Order code(s) and plain text. Measuring-point number/identification (max. 6 characters), Y:... Y Measuring-point text (max. 7 characters), Y6:... Y6 ) Without cable gland. / Siemens FI

10 7MF9 mounting flange. Mounting flange irectly fitted onto transmitter for level, for: HK series (7MF6-...) S series and S series with PROFIBUS-PA (7MF6-...) Flange Nom. diam. Nom. press. Connection N 8 PN to N PN 6 IN PN Connection Class to Class ANSI B6. Class Class Other version Add Order code and plain text: Nominal diameter:...; Nom. pressure:... Wetted parts materials Stainless steel, mat. No..7 With PFA With PTFE With ECTFE Monel, mat. No..6 Hastelloy B, mat. No..67 Hastelloy C76, mat. No..89 Hastelloy C, mat. No..6 Tantalum Other version Add Order code and plain text: Wetted parts materials:... Sealing face: see "Technical data" Tube length Without tube mm mm mm mm Filling liquid Silicone oil M Silicone oil M High-temperature oil Halocarbon oil (for O measurements) Vegetable oil Glycerine/water ) Other version Add Order code and plain text: Filling liquid:... Order No. Order code 7MF G H Q R T U Z A E F G H J U K Z JY KY 6 9 MY Further designs Please add "Z" to Order No. and specify Order code(s). With flame flashover lock-out for mounting on zone (including documentation) Manufacturer s test certificate M to IN, Part 8, and to ISO 9 Acceptance test certificate B to IN 9, Section./EN Vacuum-resistant design (for use in vacuum range) Calculation of span of associated transmitter Enclose filled-in questionnaire (see page /8) with order. Note: Suffix "Y" required with transmitter! Order code Note: See page /9 ff for minimum span values and data on limits of use and temperature errors. See page /8 for example for ordering A C C V Y ) Not suitable for vacuum applications. Siemens FI /

11 imensional drawings 9 L» * d d k 6 7 n x d b f, 8 Process connection of low-pressure side ¼ 8 NPT Mounting thread M, M or 7 / 6 UNF Blanking plug (electrical connection possible) Screwed gland Pg. (with adapter), M x. or ½ NPT or Han 7/Han 8U plug Analog indicator (option) 6 Protective cover over keys 7 Sealing screw with valve * for Pg, with adapter Fig. /8 imensions of HK series (transmitter including mounting flange) Connection to IN Nom. diam. Nom. press. Connection to ANSI B6. b d d d d d M f k n L N 8 PN ) 6 8 N PN ,,,, or PN Nom. diam. Nom. b press. lb/sq.in. d d d d M f k n L.9 (.8). (8.6).9 (.8). (.7) 7. (9.) 8. (9.) 9 (8.) ().7 (9.).87 (.).7 (9.).87 (.) (7) (7) 6.9 (7.) 6.9 (7.) (7.) (7.).69 (9).69 (9).8 ) (7).8 ) (7). (89). (89).6 (.6).6 (.6).6 (.6).6 (.6) 6 (.) 6.69 (68.) 7. (9.) 7.88 () 8,,.9,.9 or 7. 8 (,,, or ) 8 d Internal diameter of gasket to IN 69 d M Effective diaphragm diameter ) 89 mm = ½ with tube length L=. / Siemens FI

12 imensional drawings * 8 7 L 8, d d k 6 8 n x d b f Process connection of low-pressure side ¼ 8 NPT Mounting thread M, M or 7 / 6 UNF Blanking plug Electrical connection: Screwed gland Pg. (with adapter) (not S series with PROFIBUS-PA), M x. or ½ NPT or Han 7/Han 8U plug (not S series with PROFIBUS-PA) Terminal side, analog indicator as option 6 Electronics side, digital display as option 7 Protective cover over keys 8 Sealing screw with valve * for Pg, with adapter ** imensions in brackets for S series with PROFIBUS-PA Fig. /9 imensions of S series and S series with PROFIBUS-PA (transmitter including mounting flange) 7 (9)** ()** 6 Connection to IN Nom. diam. Nom. press. Connection to ANSI B6. b d d d d d M f k n L N 8 PN ) 6 8 N PN ,,,, or PN Nom. diam. Nom. b press. lb/sq.in..9 (.8). (8.6).9 (.8) 7. (9.) 8. (9.) 9 (8.) d.7 (9.).87 (.).7 (9.)..87 (.7) () (.) d Internal diameter of gasket to IN 69 d M Effective diaphragm diameter d (7) (7) 6.9 (7.) 6.9 (7.) d (7.) (7.).69 (9).69 (9) d M.8 ) (7).8 ) (7). (89). (89) f.6 (.6).6 (.6).6 (.6).6 (.6) k 6 (.) 6.69 (68.) 7. (9.) 7.88 () n 8 L,,.9,.9 or 7, 8 (,,, or ) 8 ) 89 mm = ½ with tube length L=. Siemens FI /