Data Sheet for Product

Technical Instructions
Document Number 155-065P25
February 7, 2022
Page 6 Siemens Industry, Inc.
Operation
In the TH 192 S direct acting thermostat, an increase in temperature increases the
control air pressure and a decrease in temperature decreases the control pressure.
In the TH 192 S reverse acting thermostat, an increase in temperature decreases the
control air pressure and a decrease in temperature increases the control pressure.
Figure 5. TH 192 S Input/Output Characteristics.
TH 192 S
Thermostat Details
Figure 6. TH 192 S Thermostat Details.
Thermometer
Calibration
1. Use a test thermometer to read the current room temperature.
2. Place a screwdriver in the center of the thermometer assembly (See Figure 6).
Carefully rotate thermometer assembly until pointer tip indicates the correct room
temperature.
NOTE: Avoid breathing on or touching the bimetal spiral since this affects the
temperature reading.