27RS MSYSTEM | Alldatasheet

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MODEL: 27RS 27RS SPECIFICATIONS ES-7653 Rev.8 Page 1/4 http://www.m-system.co.jp/ Head-mounted Two-wire Signal Conditioners 27-UNIT RTD TRANSMITTER (PC programmable) Functions & Features

  • Accepts direct input from an RTD and provides a standard 4 – 20 mA DC signal
  • Suitable for Functional Safety applications up to SIL2
  • I/O range programming via PC Configurator
  • User’s temperature table can be used
  • Self diagnostics
  • Low temperature drift 44 (1.73) DIA. 20.7 (.81) mm (inch) MODEL: 27RS–[1][2]

ORDERING INFORMATION

  • Code number: 27RS-[1][2] Specify a code from below for each of [1] and [2]. (e.g. 27RS-0/M) Use Ordering Information Sheet (No. ESU-7653). 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 (Option code /M is not selectable) 2: ATEX intrinsic safety (Option code /M is not selectable) [2] OPTIONS Function Monitor LED Blank: Without /M: With

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 Function monitor LED: Input status and error status are displayed by blinking mode. User-configurable items: PC and the transmitter are connected with the COP-HU.
  • Input sensor type
  • Number of wires
  • 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 Pt 100 (JIS ’97, IEC), 0 to 100°C. ■ RTD (2-wire, 3-wire or 4-wire) Input resistance: ≥ 1 MΩ Excitation: 0.2 mA Allowable leadwire resistance: Max. 10 Ω per wire Temperature Range RTD MIN. SPAN USABLE RANGE Pt 100 (JIS '97, IEC) Pt 500 Pt 1000 JPt 100 (JIS '89) -200 to +850 -328 to +1562 -200 to +850 -328 to +1562 -200 to +850 -328 to +1562 -200 to +510 -328 to +950 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)

MODEL: 27RS 27RS SPECIFICATIONS ES-7653 Rev.8 Page 2/4 http://www.m-system.co.jp/ 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. 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: ±0.15°C (±0.27°F), ±0.075 % of span or ±0.075 % of max. range, whichever is greater (max. range = 0 % or 100 % value, absolute value of whichever is greater.) Temp. coefficient: 0.0075 %/°C (0.004 %/°F) Response time: ≤ 1 sec. (2- or 3-wire; 0 – 90 %) or ≤ 2 sec. (4-wire; 0 – 90 %) with damping time set to 0 Burnout response time: ≤ 2 sec. 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: 27RS 27RS SPECIFICATIONS ES-7653 Rev.8 Page 3/4 http://www.m-system.co.jp/ FUNCTION MONITOR LED (option /M) Function Monitor LED 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: 27RS 27RS SPECIFICATIONS ES-7653 Rev.8 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM *2. Option /M *3. Limited to 250 – 500Ω when using the communication to configure the module. *4. 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. Output Driver Output Computation Input Computation Comm. Circuit Low Drift Amplifier Isolation INPUT *1 *1. Input Connection Examples ■ RTD & RESISTANCE

  • Two-wire • Three-wire • Four-wire FUNCTION MONITOR LED LOADOUTPUT 24V DC 4 – 20mA DC Non-Hazardous LocationHazardous Location Safety Barrier B A B B A B B A A Specifications are subject to change without notice.