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