2 Specifications 
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2  Specifications 
2.1  Ratings 
Series 
TK4 
TK4S  TK4SP  TK4M  TK4W  TK4H  TK4L 
Power Supply  100-240 VAC, 50/60 Hz 
Allowable voltage range  ±10% of rated voltage 
Power Consumption  Max. 8 VA 
Display  7-Segment (red), all other displays (green, amber, red LED) 
Character 
Size 
PV(W x H) 
7.0X14.0mm  7.0X14.0mm  9.5X20.0mm  8.5X17.0mm  7.0X14.6mm  11.0X22.0mm 
SV(W x H) 
5.0X10.0mm  5.0X10.0mm  7.5X15.0mm  6.0X12.0mm  6.0X12.0mm  7.0X14.0mm 
Input 
Types 
RTD 
JPT 100 Ω, DPT 100 Ω, DPT 50 Ω, CU 100 Ω, CU 50 Ω, and Nikel 120 Ω 
(6 types) 
Thermocouples  K, J, E, T, L, N, U, R, S, B, C, G, and PLII (13 types) 
Analog 
Voltage: 0 to 100mV, 0 to 5V, 1 to 5V, and 0 to 10 V (4 types) 
Current: 0 to 20mA and 4 to 20mA (2 types) 
Display 
Accuracy 
RTD 
※
1
At room temperature (23℃ ± 5℃): PV ± 0.3% or ± 1℃ (whichever is greater) ± 1 digit.   
At all other temperature ranges: PV ± 0.5% or ± 2℃  (whichever is greater) ± 1 digit.   
In case of TK4SP series, ±1℃  will be added. 
Thermocouples 
Analog 
At room temperature (23℃ ± 5℃): ± 0.3% F. S . ± 1 digit. 
At all other temperature ranges: ± 0.5% F.S . ± 1 digit. 
C. T. Input  ± 5% F. S .  ± 1 digit 
Control 
Output 
Relay  250 VAC 3A 1a 
SSR  11 VDC ± 2 V 20 mA Max. 
Current  Choose between DC0 to 20 mA and DC4 to 20 mA (Load 500 Ω Max.) 
Alarm Output  250 VAC 3A 1a 2Contacts(TK4SP-1contact) 
Output 
Option 
Transmission 
Output 
DC4 to 20mA (Load 500 Ω Max. Output Accuracy:  ±0.3% F.S) 
Communication  RS485 Communication Output (Modbus RTU) 
Input 
Option 
C. T.  
0.0 to 50.0A (primary heater current reading range)  ※1000:1 C. T. Ratio 
Digital Input 
Contact - On: < 2kΩ, Off: > 90kΩ 
Non-Contact - On: < 1.0 V Residual Voltage, Off: < 0.1mA Leakage Current 
※TK4S/M-1ea(due to limited terminal), TK4H/W/L-2ea(except TK4SP) 
Control 
Type 
Heating and 
Cooling 
On/Off, P, PI, PD, and PID Control 
Heating or 
Cooling