The document describes a temperature controller that uses a thermocouple temperature sensor and a heater to control temperature. The temperature controller receives the temperature reading from the thermocouple sensor and compares it to the set point. If the temperature is too low, it turns on the heater. If the temperature reaches the set point, it turns off the heater. The controller contains a switch, relay, and meter to control power to the heater. To operate it, the user sets the desired temperature on the controller and it works to maintain the process at that set point.

1. SME service 8
2554
Temperature controller
Temperature sensor
temperature controller
Temperature controller heater
Temperature sensor
thermocouple)
emf) thermocouple) 2

2. thermocouple)
Thermocouple Temperature controller
Temperature controller heater
Temperature
controller heater
Control

3. Temperature controller
Temperature controller
3
- set
- switching
220V
-
- Temperature controller
Switch
switch
Switch 2 4
Switch 4
switch
Mater 0.00 switch

4. Relay meter coil Relay
Relay coil
meter
2
2 Relay Relay
4 NC
Test
220VAC 1 2
Temperature controller
set
set
- Process Variable Temperature

5. - Set-point Variable
- / set
- Enter
-
-
set Temperature controller