MODEL: KR
Plug-in Signal Conditioners K-UNIT
[2] OUTPUT
Current
A: 4 – 20 mA DC (Load resistance 750 Ω max.)
B: 2 – 10 mA DC (Load resistance 1500 Ω max.)
C: 1 – 5 mA DC (Load resistance 3000 Ω max.)
D: 0 – 20 mA DC (Load resistance 750 Ω max.)
E: 0 – 16 mA DC (Load resistance 900 Ω max.)
F: 0 – 10 mA DC (Load resistance 1500 Ω max.)
G: 0 – 1 mA DC (Load resistance 15 kΩ max.)
Z: Specify current (See OUTPUT SPECIFICATIONS)
Voltage
RTD TRANSMITTER
(CE, non-isolated)
Functions & Features
• Accepting direct input from an RTD and providing a
standard process signal
• Linearization
• Burnout protection
• "Active bridge" circuit containing two constant current
sources allows large leadwire resistances up to 200 Ω
• High density mounting
1: 0 – 10 mV DC (Load resistance 10 kΩ min.)
2: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3: 0 – 1 V DC (Load resistance 3000 Ω min.)
4: 0 – 10 V DC (Load resistance 10 kΩ min.)
5: 0 – 5 V DC (Load resistance 5000 Ω min.)
6: 1 – 5 V DC (Load resistance 5000 Ω min.)
0: Specify voltage (See OUTPUT SPECIFICATIONS)
Typical Applications
• Long distance transmission between the RTD and the
transmitter
• Combination with intrinsic safety barriers
50
(1.97)
[3] POWER INPUT
AC Power
G: 200 V AC
H: 220 V AC
J: 240 V AC
80
(3.15)
DC Power
123
(4.84)
S: 12 V DC
mm (inch)
R: 24 V DC
[4] OPTIONS (multiple selections)
Burnout
MODEL: KR–[1][2]–[3][4]/CE
blank: Upscale burnout
ORDERING INFORMATION
• Code number: KR-[1][2]-[3][4]/CE
Specify a code from below for each of [1] through [4].
(e.g. KR-4A-H/BL/CE)
/BL: Downscale burnout
Standards & Approvals (must be specified)
/CE: CE marking
• Temperature range (e.g. 0 – 500°C)
• Special output range (For codes Z & 0)
GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel
Housing material: Flame-resistant resin (black)
Isolation: Input or output 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
[1] INPUT RTD (2- or 3-wire)
1: JPt 100 (JIS'89)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 50°C, 90°F)
3: Pt 100 (JIS'89)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
4: Pt 100 (JIS'97, IEC)
(Usable range: -200 to +650°C, -328 to +1202°F; min.span: 50°C, 90°F)
5: Pt 50 Ω (JIS'81)
(Usable range: -200 to +500°C, -328 to +932°F; min.span: 100°C, 180°F)
6: Ni 508.4 Ω
INPUT SPECIFICATIONS
Maximum leadwire resistance: 200 Ω per wire (3-wire)
Sensing current: 2 mA
(Usable range: -50 to +200°C, -58 to +392°F; min.span: 30°C, 54°F)
0: Specify
Note: Consult M-System for 2-wire RTD
KR SPECIFICATIONS
ES-3536-CE Rev.9 Page 1/3
https://www.m-system.co.jp/