Head-mounted Two-wire Signal Conditioners 7-UNIT -WIRE UNIVERSL TEMPERTURE TRNSMITTER (HRT communication) Functions & Features Universal input: DC mv, T/C, RTD and resistance High accuracy HRT communication Intrinsically safe approval Suitable for Functional Safety applications up to SIL Programming via hand-held communicator or via PC wide variety of T/C and RTD types User s temperature table can be used Self diagnostics Ultra-low temp. drift option (0 ppm/ C typ.) CE marking (conforms to TEX and EMC) (.7) DI. 0.7 (.8) MODEL: 7HU[][] mm (inch) ORDERING INFORMTION Code number: 7HU-[][] Specify a code from below for each [] and []. (e.g. 7HU-/L) Use Ordering Information Sheet (No. ESU-765). Factory standard setting will be used if not otherwise specified. Specify the country in which the product is to be used with the Safety pproval code. [] SFETY PPROVL 0: None : FM intrinsically safe : CENELEC intrinsic safety (TEX) [] OPTIONS Temperature Drift lank: Standard (temp. coefficient 0.05%/ C) /L: Ultra-low temperature drift (temp. coefficient 0.00%/ C typ., 0.005%/ C max.) MODEL: 7HU RELTED PRODUCTS US interface ell0 modem (model: COP-HU) Usable in non-hazardous area only. Hand-held communicator PC configurator software (model: 7HUCFG) Downloadable at M-System s web site. GENERL SPECIFICTIONS Construction: Sensor head-mounting Connection: M screw terminals (torque 0.5 N m) Screw terminal: Nickel-plated brass Housing material: Flame-resistant resin (black) Isolation: Input to output User-configurable items: Input sensor type and numbers Number of wires (RTD & resistance) Input range (inverted range selectable) urnout Output limits (Upper / Lower) Damping time (factory set to 0) Cold junction compensation (T/C; internal or external sensor selectable) Linearization Sensor calibration Output calibration HRT communication mode Refer to the HRT setup manual or the PC configurator users manual for the detail. HRT COMMUNICTION Protocol: HRT communication protocol HRT address range: 0 5 (factory set to 0) Transmission speed: 00 bps Digital current: pprox. mp-p when communicating Character format: Start it, 8 Data its, Odd Parity it, Stop it Distance:.5 km (0.9 miles) HRT communication mode: Master-Slave Mode and urst Mode (factory set to Master-Slave) HRT network mode: Point-to-Point Mode and Multi-drop Mode; automatically set to Multi-drop Mode when the address is set to other than 0. INPUT SPECIFICTIONS The input is factory set for use with K thermocouple, single input, 0 to 00 C, internal CJC sensor. See Table for the available input type, the minimum span and the maximum range. DC mv (dual input available) Input resistance: MΩ Thermocouple (dual input available) 7HU SPECIFICTIONS ES-765 Rev.6 Page /5
MODEL: 7HU Input resistance: MΩ urnout sensing: μ External CJC sensor type: Pt 00 RTD (-wire, -wire or -wire) Input resistance: MΩ Excitation: 0. m llowable leadwire resistance: Max. 0 Ω per wire Resistance (-wire, -wire or -wire) Input resistance: MΩ Excitation: 0. m llowable leadwire resistance: Max. 0 Ω per wire OUTPUT SPECIFICTIONS Output range: 0 m DC Operational range:.75 m Load resistance vs. supply voltage: Load Resistance (Ω) = (Supply Voltage (V) 8 (V)) 0.0 () (including leadwire resistance) urnout:.75.8 m or.5 m (factory set to m) Upper output limit proportional to the input: 0.5 m (factory set to.5 m) Lower output limit proportional to the input:.8 m (factory set to.8 m) Update time: 0 msec. (660 msec. with dual input) Output characteristics for dual input: verage or Differential selectable INSTLLTION Supply voltage 8 5 V DC (non-approved) 8 8 V DC (approved) Operating temperature: -0 to 85 C (-0 to 85 F) (See Safety Parameters for use in a hazardous location.) Operating humidity: 0 to 95 %RH (non-condensing) Mounting: Head-mounting (DIN type head) Weight: g (.76 oz) PERFORMNCE ccuracy: See Table. Cold junction compensation accuracy: C ( F) with internal CJC sensor Response time: sec. (0 %) with damping time set to 0 and when not communicating via HRT. Supply voltage effect: ±0.005 % of span/v Insulation resistance: 00 MΩ with 0 V DC Dielectric strength: 0 V C @ minute (input to output) Safety integrity level according to IEC 68: Suitable for use in a safety instrumented system up to SIL (together with sensor) if appropriate safety instructions are observed. Consult M-System. STNDRDS & PPROVLS EU conformity: TEX Directive Ex ia EN 60079- EMC Directive EN 66- RoHS Directive EN 58 Safety approval: FM: Intrinsically safe Class I, Division, Groups,, C and D Class I, Zone 0, Ex ia IIC (US) Class I, Zone 0, Ex ia IIC (Canada) T, T5 and T6 (Class 60, NSI/IS 60079-, CN/CS-C. No. 57, CN/CS-C. No. 60079-) CENELEC: Intrinsic safety (TEX) II G, Ex ia IIC; T, T5 and T6 (EN 60079-) SFETY PRMETERS Operating temperature For CENELEC (TEX) / FM: T: -0 to 80 C T5: -0 to 60 C T6: -0 to 5 C Ex-data: Output circuit Ui (Vmax): 0 V DC Ii (Imax): 96 m DC Pi (Pmax): 70 mw Ci: nf Li: 0 mh Sensor circuit Uo (Voc): 0 V DC Io (Isc): m DC Po: 80 mw Co (Ca): nf Lo (La): 0 mh 7HU SPECIFICTIONS ES-765 Rev.6 Page /5
MODEL: 7HU INPUT TYPE, RNGE & CCURCY INPUT TYPE SPN SPN CCURCY * TEMPERTURE DRIFT STNDRD DRIFT * ULTR-LOW DRIFT * DC mv mv -00 to 800 mv ±0 μv ±.5 μv/ C μv/ C Resistance 5 Ω 0 to kω ±0. Ω ±5 mω / C ±5 mω / C K (C) E (CRC) J (IC) T (CC) (RH) R Thermocouple S C (WRe 5-6) D (WRe -5) N U L RTD Pt 00 (JIS '97, IEC) Pt 00 Pt 0 Pt 000 JPt 00 (JIS '89) Ni 00 (DIN 760 '87) SPN 00 00 00 00 00 SPN 0 0 0 0 0 0 C F TEMPERTURE DRIFT -80 to 7-00 to 000-00 to 00-00 to 00 00 to 80 - to 760* - to 760* 0 to 00 0 to 00-80 to 00-00 to 600-00 to 0 CCURCY * SPN ± ± ± ± ± 80 80 80 80 80-9 to -8 to 8-8 to 9-8 to 75 75 to 08-58 to 00* -58 to 00* to 7 to 7-9 to 7-8 to -8 to 65 CCURCY STNDRD * DRIFT * ±.8 ±.8 ±.8 ±.8 ±.8 ±0. C/ C ±0. C/ C ±0. C/ C ±0. C/ C ±0. C/ C ULTR-LOW DRIFT * ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C ±0. C/ C ±0. C/ C ±0. C/ C ±0. C/ C ±0. C/ C ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C C F TEMPERTURE DRIFT -00 to 8-00 to 8-00 to 8-00 to 8-00 to -60 to CCURCY * SPN ±0. ±0. ±0. ±0. ±0. ±0. 8 8 8 8 8 8-8 to 56-8 to 56-8 to 56-8 to 56-8 to 9-76 to 8 CCURCY STNDRD * DRIFT * ±0.8 ±0.8 ±0.8 ±0.8 ±0.8 ±0.6 ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C ±0.05 C/ C *. DC mv: Or ±0.05 % of absolute range (greater of 0 % and 00 % range values), whichever is greater. Or ±0. % of absolute negative range for two inputs including negative ranges, whichever is greater. Resistance: Or ±0.05 % of absolute range (greater of 0 % and 00 % range values), whichever is greater. Thermocouple: Or ±0.05 % of span, whichever is greater. dd cold junction compensation error. RTD: Or ±0.05 % of max. range (greater of 0 % and 00 % range values converted into C), whichever is greater. (For - or -wire RTD, the value is valid by the sensor calibration after wiring is complete.) *. Or ±0.05 % of absolute range/ C (greater of 0 % and 00 % range values), whichever is greater. *. Or ±0.005 % of absolute range/ C (greater of 0 % and 00 % range values), whichever is greater. *. Conformance range: to 760 C or to 00 F ULTR-LOW DRIFT * DIMENSIONS unit: mm (inch) (.7) dia. (.0) 6 (.) dia. 6.5 (.65) 0.7 (.8) 9.5 (.77).7 (.5).5 (.8) dia. MTG HOLE 7.6 (.0) dia. 6. (.5) 6M SCREW 7HU SPECIFICTIONS ES-765 Rev.6 Page /5
MODEL: 7HU MOUNTING REQUIREMENTS unit: mm (inch) M SCREW (.0) The screws are to be provided by the customer. SCHEMTIC CIRCUITRY & CONNECTION DIGRM Hazardous Location Non-Hazardous Location HRT Comm. INPUT * Low Drift mplifier Input Computation Isolation Output Computation Output Driver V DC * OUTPUT LOD 0m DC Safety arrier* CJC Sensor *. Input Connection Examples DC MILLIVOLT INPUT THERMOCOUPLE Internal CJC RTD & RESISTNCE Two-wire Two Inputs External CJC Three-wire INPUT INPUT Two Inputs, Internal CJC SENSOR SENSOR Four-wire Two Inputs, External CJC SENSOR SENSOR *. Limited to 00 Ω for HRT communication. *. safety barrier must be installed for the intrinsic safety. The safety barrier must meet the Ex-data of this unit and must be approved for the hazardous location. 7HU SPECIFICTIONS ES-765 Rev.6 Page /5
MODEL: 7HU Specifications are subject to change without notice. 7HU SPECIFICTIONS ES-765 Rev.6 Page 5/5