18JT-366-R

18JT MSYSTEM | Alldatasheet

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Technical content

MODEL: 18JT 18JT SPECIFICATIONS ES-1863 Rev.9 Page 1/3 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK THERMOCOUPLE CONVERTER (field-programmable) Functions & Features

• Accepting direct input from a thermocouple and providing two standard process signals
• Microprocessor based
• Field-programmable T/C type and temperature range
• Linearization
• Burnout protection
• High accuracy cold junction compensation
• Loop testing via hand-held programmer PU-2x
• Second channel output available at the front terminals and at the Standard Rack connector Typical Applications
• Ideal for quick spare part
• High-accuracy cold junction compensation benefits narrow span measurements
• 0.1μA burnout sensing enables long distance transmission with minimum offset drifts
• Electric furnace (isolation)
• No burnout type can connect to a single T/C in parallel with a recorder MODEL: 18JT–[1]66–R[2]

ORDERING INFORMATION

• Code number: 18JT-[1]66-R[2] Specify a code from below for each of [1] and [2]. (e.g. 18JT-266-R/BL)
• Temperature range (e.g. 0 – 800°C) Default setting will be used if not otherwise specified. K thermocouple setting will be used if the input code is not specified. [1] INPUT THERMOCOUPLE 1: (PR) (Usable Range 0 to 1760°C, 32 to 3200°F) 2: K (CA) (Usable range -270 to +1370°C, -454 to +2498°F) 3: E (CRC) (Usable range -270 to +1000°C, -454 to +1832°F) 4: J (IC) (Usable range -210 to +1200°C, -346 to +2192°F) 5: T (CC) (Usable range -270 to +400°C, -454 to +752°F) 6: B (RH) (Usable range 0 to 1820°C, 32 to 3308°F) 7: R (Usable range -50 to +1760°C, -58 to +3200°F) 8: S (Usable range -50 to +1760°C, -58 to +3200°F) N: N (Usable range -270 to +1300°C, -454 to +2372°F) 0: Specify OUTPUT 1 Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) OUTPUT 2 Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) [2] OPTIONS Burnout blank: Upscale burnout /BL: Downscale burnout /BN: No burnout

RELATED PRODUCTS

• Programming Unit (model: PU-2x)
• PC configurator software (model: JXCON) Downloadable at M-System’s web site. A dedicated cable is required to connect the module to the PC. Please refer to the internet software download site or the users manual for the PC configurator for applicable cable types. GENERAL SPECIFICATIONS Construction: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided Connection Input: M3.5 screw terminals (torque 0.8 N·m) Output 1: Connector Output 2: M3.5 screw terminals (torque 0.8 N·m) and connector Power input: Supplied from connector Screw terminal: Nickel-plated steel Isolation: Input to output 1 to output 2 to power Overrange output: Approx. -10 to +120 % at 1 – 5 V Linearization: Standard Cold junction compensation: CJC sensor attached to the

MODEL: 18JT 18JT SPECIFICATIONS ES-1863 Rev.9 Page 2/3 http://www.m-system.co.jp/ input terminals Adjustments: Programming Unit (model: PU-2x); (Refer to the users manual of JXCON for the adjustments configurable with JXCON.)

• T/C type
• temp. range
• zero and span
• simulating output
• Others INPUT SPECIFICATIONS Minimum span: 3 mV Offset: Max. 3 times span Input resistance: 20 kΩ min. Burnout sensing: 0.1 μA Minimum span (PR): 370°C, 670°F K (CA): 75°C, 140°F E (CRC): 50°C, 90°F J (IC): 60°C, 110°F T (CC): 75°C, 140°F R: 360°C, 650°F S: 380°C, 690°F N: 110°C, 200°F Note: The described accuracy may be partially not satisfied when the temperature ranges below 0°C. Consult factory. If not specified, the input range is shown below. (PR): 0 to 1600°C K (CA): 0 to 1000°C E (CRC): 0 to 500°C J (IC): 0 to 500°C T (CC): 0 to 300°C B (RH): 0 to 1800°C R: 0 to 1600°C S: 0 to 1600°C N: 0 to 1000°C INSTALLATION Current consumption: Approx. 60 mA Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18BXx or 18KBXx Weight: 150 g (0.33 lb) PERFORMANCE in percentage of span Accuracy: ±0.1 % Linearization accuracy: ±0.05 % Cold junction compensation error: ±0.5°C or ±0.9°F (at 20°C ±10°C or 68°F ±18°F) Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) Response time: ≤ 0.8 sec. (0 – 90 %) Burnout response: ≤ 10 sec. Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @ 1 minute (input to output 1 or output 2 or power)

500 V AC @ 1 minute

(output 1 to output 2 to power)

1500 V AC @ 1 minute

(input or output or power to ground)

MODEL: 18JT 18JT SPECIFICATIONS ES-1863 Rev.9 Page 3/3 http://www.m-system.co.jp/ EXTERNAL DIMENSIONS unit: mm (inch) 110 (4.33 ) 93 (3.66) 24 (.94) 7 (.28) 78 (3.07)32 (1.26) 8–M3.5 SCREW 7 (.28) 2–M3 SCREW TERMINAL ASSIGNMENTS 1 2 3 4 7 8 5 6 CJC SENSOR (model: CJM) SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Isolation Output Driver OUTPUT 2 SZ Output Driver CONNECTOR OUTPUT 2 OUTPUT 1 POWER Low Drift Amplifier Digital Computation SERIAL TRANSMISSION LINE T / C CJC SENSOR metal leg model: CJM comp. leadwire Burnout4 PU-2x MODULAR JACK Specifications are subject to change without notice.