MODEL: 18JT
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
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
OUTPUT 1
• Microprocessor based
Voltage
• Field-programmable T/C type and temperature range
• Linearization
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
• 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
OUTPUT 2
Voltage
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
POWER INPUT
Typical Applications
DC Power
• Ideal for quick spare part
R: 24 V DC
• High-accuracy cold junction compensation benefits narrow
span measurements
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
• 0.1μA burnout sensing enables long distance transmission
with minimum offset drifts
[2] OPTIONS
Burnout
• Electric furnace (isolation)
• No burnout type can connect to a single T/C in parallel
with a recorder
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.
MODEL: 18JT–[1]66–R[2]
GENERAL SPECIFICATIONS
Construction: Rack-mounted; terminal access via screw
terminals on the front and connector on the rear; terminal
cover provided
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)
Connection
• 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.
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
[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)
Cold junction compensation: CJC sensor attached to the
18JT SPECIFICATIONS
ES-1863 Rev.9 Page 1/3
http://www.m-system.co.jp/