MODEL: 18KRS
Rack-mounted DCS Signal Conditioners 18K-RACK
[2] OUTPUT 2
Current
A: 4 – 20 mA DC (Load resistance 600 Ω max.)
Voltage
RTD CONVERTER
Functions & Features
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
• Accepting direct input from an RTD and providing two
standard process signals
• Linearization
POWER INPUT
• Burnout protection
DC Power
• Module can be retracted without removing wiring for an
insulation test
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
• Power switch optional
[3] OPTIONS (multiple selections)
Power Switch
Typical Applications
• Converting into standard signals
• Power plant
blank: None
/S: With power switch
Burnout
blank: Upscale burnout
/BL: Downscale burnout
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)
and connector
MODEL: 18KRS–[1]6[2]–R[3]
Output 1: Connector
ORDERING INFORMATION
• Code number: 18KRS-[1]6[2]-R[3]
Specify a code from below for each of [1] through [3].
(e.g. 18KRS-466-R/S/BL)
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
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
Linearization: Standard
• Temperature range (e.g. 0 – 500°C)
[1] INPUT RTD (2- or 3-wire)
1: JPt 100 (JIS'89)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 30°C, 54°F)
3: Pt 100 (JIS'89)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F)
4: Pt 100 (JIS'97, IEC)
INPUT SPECIFICATIONS
Maximum leadwire resistance: 20 Ω per wire (3-wire)
Sensing current: 2 mA
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F)
5: Pt 50 Ω (JIS'81)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 60°C, 108°F)
6: Ni 508.4 Ω
INSTALLATION
Current consumption:
(Usable range: -50 to +200°C, -58 to +392°F; min.span: 20°C, 36°F)
0: Specify
Approx. 35 mA with voltage output
Approx. 65 mA with current output
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Standard Rack 18KBXx
Weight: 150 g (0.33 lb)
Note: Consult M-System for 2-wire RTD
OUTPUT 1
Voltage
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
18KRS SPECIFICATIONS
ES-0414 Rev.3 Page 1/3
http://www.m-system.co.jp/