The document describes a temperature controller that uses sensors to monitor and regulate temperature using a heater. It can operate as an on/off controller or continuous controller. The specific temperature controller discussed is an RKC Instrument model CH402 that operates on 100-240V AC power, has an ambient temperature rating of 50 degrees Celsius, and controls temperature using a K-type thermocouple input and relay output. It has multiple control functions that are selected using front panel buttons.

1. SME Service
Temperature controller
Temperature-controller Sensors
temperature sensor)
temperature controller
temperature- controller Temperature controller
heater heater
Temperature controller
on/off Temperature controller
Temperature controller
Heater
Heater
Heater
Continuous Temperature controller
Temperature controller
Heater

2. Temperature controller Heater
Heater
on/off Temperature controller
Temperature
Sensors
Controller
Heater
AC
Temperature controller Heater,
Sensors
Temperature controller
-

3. - RKC Instrument INC.
- Model : CH402
- NO. 04A21334
- Supply: 100 to 240 VAC (50/60Hz)
7 VA(100V) 10 VA(240V)
- AMB. Temp 50 CMAX
- Code : FK01-M*GN-NNZK-1033
- Range : 0-400 Celsius Degree
- INPUT : K
- OUTPUT : Relay

4. Panel
11.
Panel
contact
A C
B D
Function Diode
Function
A C B D
Function
Diode
Function
A B C D

5. Function
Diode
Function
OL
13. Relay Relay
-
coil NC
coil
NO
Relay
coil
13.2 Function
NC NO