27U MSYSTEM | Alldatasheet

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MODEL: 27U 27U SPECIFICATIONS ES-7656 Rev.8 Page 1/5 http://www.m-system.co.jp/ Head-mounted Two-wire Signal Conditioners 27-UNIT 2-WIRE UNIVERSAL TEMPERATURE TRANSMITTER (PC programmable) Functions & Features

  • Universal input: mV, T/C, RTD and resistance
  • Suitable for Functional Safety applications up to SIL2
  • Programming via PC Configurator
  • A wide variety of T/C and RTD types
  • User’s temperature table can be used
  • Self diagnostics
  • Low temperature drift
  • CE marking (conforms to ATEX and EMC) 44 (1.73) DIA. 20.7 (.81) mm (inch) MODEL: 27U–[1]

ORDERING INFORMATION

  • Code number: 27U-[1] Specify a code from below for [1]. (e.g. 27U-0) Use Ordering Information Sheet (No. ESU-7656). Factory standard setting will be used if not otherwise specified. Specify the country in which the product is to be used with the Safety Approval code 2. [1] SAFETY APPROVAL 0: None 1: FM intrinsically safe 2: ATEX intrinsic safety

RELATED PRODUCTS

  • USB interface Bell202 modem (model: COP-HU) Usable in ‘non-hazardous’ area only.
  • PC configurator software (model: 27MCFG) Downloadable at M-System’s web site. GENERAL SPECIFICATIONS Construction: Sensor head-mounting Connection: M3 screw terminals (torque 0.5 N·m) Screw terminal: Nickel-plated brass Housing material: Flame-resistant resin (black) Isolation: Input to output Cold Junction Compensation: CJC sensor incorporated Self diagnostics: Detects internal error, burnout User-configurable items: PC and the transmitter are connected with the COP-HU.
  • Input sensor type
  • Input range
  • Burnout
  • Output limits (Upper / Lower)
  • Damping time (factory set to 0)
  • Linearization
  • Output calibration
  • Loop test output INPUT SPECIFICATIONS The input is factory set for use with K thermocouple, single input, 0 to 100°C. See Table 1 for the available input type, the minimum span and the maximum range. ■ DC mV Input resistance: ≥ 1 MΩ ■ Thermocouple (dual input available) Input resistance: ≥ 1 MΩ ■ RTD (2-wire, 3-wire or 4-wire) Input resistance: ≥ 1 MΩ Excitation: ≤ 0.25 mA Allowable leadwire resistance: Max. 10 Ω per wire ■ Resistance (2-wire, 3-wire or 4-wire) Input resistance: ≥ 1 MΩ Excitation: 0.25 mA Allowable leadwire resistance: Max. 10 Ω per wire OUTPUT SPECIFICATIONS Output range: 4 – 20 mA DC Operational range: 3.75 – 23 mA Load resistance vs. supply voltage: Load Resistance (Ω) = (Supply Voltage (V) – 9 (V)) ÷ 0.023 (A) (including leadwire resistance) Burnout: 3.75 – 3.8 mA or 21.5 – 23 mA (factory set to 23 mA) Upper output limit proportional to the input: 20 – 21.5 mA (factory set to 21.5 mA) Lower output limit proportional to the input: 3.8 – 4 mA (factory set to 3.8 mA) Update time: 440 msec. (660 msec. with dual input) Output characteristics for dual input:

MODEL: 27U 27U SPECIFICATIONS ES-7656 Rev.8 Page 2/5 http://www.m-system.co.jp/ Average or Differential selectable INSTALLATION Supply voltage

  • 9 – 35 V DC (non-approved)
  • 9 – 28 V DC (approved) Operating temperature: -40 to +85°C (-40 to +185°F) (See Safety Parameters for use in a hazardous location.) Operating humidity: 0 to 95 %RH (non-condensing) Mounting: Head-mounting (DIN type B head) Weight: 50 g (1.76 oz) PERFORMANCE Accuracy: As indicated in Table 1, ±0.075 % of span or ±0.075 % of max. range, whichever is the greatest. Add the CJC error for T/C input. (max. range = 0 % or 100 % value, absolute value of whichever is greater.) Cold junction compensation error: ±0.5°C (±0.9°F) Temp. coefficient: 0.0075 %/°C (0.004 %/°F) of max. range (max. range = 0 % or 100 % value, absolute value of whichever is greater.) Response time: ≤ 1 sec. (0 – 90 %) or ≤ 2 sec. (4-wire RTD, 4-wire resistance or dual input T/C; 0 – 90 %) with damping time set to 0 Supply voltage effect: ±0.01 % of span/V Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @1 minute (input to output) Safety integrity level according to IEC 61508: Suitable for use in a safety instrumented system up to SIL2 (together with sensor) if appropriate safety instructions are observed. Consult M-System. STANDARDS & APPROVALS EU conformity: ATEX Directive Ex ia EN 60079-11 EMC Directive EMI EN 61000-6-4 EMS EN 61000-6-2 RoHS Directive EN 50581 Safety approval: FM: Intrinsically safe Class I, Division 1, Groups A, B, C and D Class I, Zone 0, AEx ia IIC (US) Class I, Zone 0, Ex ia IIC (Canada) T4, T5 and T6 (Class 3610, ANSI/ISA 60079-11, CAN/CSA-C22.2 No. 157, CAN/CSA-C22.2 No. 60079-11) ATEX: Intrinsic safety II 1G, Ex ia IIC; T4, T5 and T6 (EN 60079-0) (EN 60079-11) SAFETY PARAMETERS Operating temperature For ATEX / FM: T4: -40 to +80°C T5: -40 to +60°C T6: -40 to +45°C Ex-data:
  • Output circuit Ui (Vmax): 30 V DC Ii (Imax): 96 mA DC Pi (Pmax): 720 mW Ci: 1 nF Li: 0 mH
  • Sensor circuit Uo (Voc): 30 V DC Io (Isc): 24 mA DC Po: 180 mW Co (Ca): 50 nF Lo (La): 40 mH

MODEL: 27U 27U SPECIFICATIONS ES-7656 Rev.8 Page 3/5 http://www.m-system.co.jp/ INPUT TYPE, RANGE & ACCURACY *1. 2°C for 400 to 850°C range, 3.6°F for 752 to 1562°F range. *2. 2°C for -50 to +100°C range, 3.6°F for -58 to +212°F range. INPUT TYPE DC mV ■ INPUT TYPE, RANGE & ACCURACY Table 1 ACCURACY Resistance THERMOCOUPLE RTD MAXIMUM RANGE MAXIMUM RANGE 4 mV 25 Ω 100 100 100 100 100 180 180 180 180 180 0 to 4000 Ω -10 to +100 mV ±0.1 Ω ±10 µV ±0.15 ±0.15 ±0.15 ±0.15 ±0.27 ±0.27 ±0.27 ±0.27 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.9 ±0.9 ±0.9 ±0.9 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±0.9 ±0.9 ±0.9 K (CA) E (CRC) J (IC) T (CC) B (RH) R S C (WRe 5-26) N U L Pt 100 (JIS '97, IEC) Pt 500 Pt 1000 JPt 100 (JIS '89) -180 to +1372 -100 to +1000 -100 to +1200 -200 to +400 400 to 1820 -50 to +1760 -50 to +1760 0 to 2300 0 to 2300 -180 to +1300 -200 to +600 -100 to +900 -292 to +2501 -148 to +1832 -148 to +2192 -328 to +752 752 to 3308 -58 to +3200 -58 to +3200 32 to 4172 32 to 4172 -292 to +2372 -328 to +1112 -148 to +1652 -328 to +1562 -328 to +1562 -328 to +1562 -328 to +950 -200 to +850 -200 to +850 -200 to +850 -200 to +510 D (WRe 3-25) MAXIMUM RANGE MAXIMUM RANGE MIN. SPAN MAXIMUM RANGE MIN. SPAN ACCURACY MIN. SPAN ACCURACY ACCURACY MIN. SPAN ACCURACYMIN. SPAN *2 *2

MODEL: 27U 27U SPECIFICATIONS ES-7656 Rev.8 Page 4/5 http://www.m-system.co.jp/ EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch) 44 (1.73) dia. 6.3 (.25) 16.5 (.65) 6–M3 SCREW 2–4.5 (.18) dia. MTG HOLE 20.7 (.81) 19.5 (.77) 12.7 (.5) 1 4 7.6 (.30) dia. MOUNTING REQUIREMENTS unit: mm (inch) 33 (1.30) 2–M4 SCREW The screws are to be provided by the customer.

MODEL: 27U 27U SPECIFICATIONS ES-7656 Rev.8 Page 5/5 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Output Driver Output Computation Input Computation Comm. Circuit Isolation CJC Sensor Low Drift Amplifier INPUT *1 *1. Input Connection Examples ■ DC MILLIVOLT INPUT ■ THERMOCOUPLE

  • Single input comp. leadwire 4 ■ RTD & RESISTANCE
  • Two-wire
  • Three-wire
  • Dual input comp. leadwire B B A B A
  • Four-wire B B A A SENSOR 2 SENSOR 1 *2. Limited to 250 – 500Ω when using the communication to configure the module. *3. A 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. LOADOUTPUT 24V DC 4 – 20mA DC Non-Hazardous LocationHazardous Location Safety Barrier Specifications are subject to change without notice.