Contact Thermometers
A contact thermometer shows temperature on the dial while opening or closing an electrical contact at a set limit, combining indicator and switch functions.
It is used for alarms and fan or pump control on boilers, chillers, compressors and machine cooling systems. The product range includes NC/NO contact models with Ø60 and Ø100 mm dials and scales from −30/+60 °C to 250 °C.
Main Applications
- Boiler over-temperature alarm
- Chiller and cooling circuits
- Compressor oil temperature
- Fan and pump control
- Cold room temperature alarm
- Machine protection circuits
Technical Data
| Type | Gas-filled contact thermometer |
|---|---|
| Dial | Ø60 and Ø100 mm (product range) |
| Scale | −30/+60, 160, 120, 250 °C (product names) |
| Contact | NC / NO (product names) |
| Capillary | 3 m on one model (product name); others depending on model |
| Accuracy | CL 1.0 on one model (product name); others depending on model |
| Contact rating | Depending on model |
| Connection | Back or capillary (product range) |
Material Options
| Part | Ø60 contact | Ø100 contact |
|---|---|---|
| Readability | Compact panel | Easy reading from a distance |
| Contact | NC / NO | NC / NO |
| Scale | −30/+60 … 250 °C | 120 °C (product range) |
| Typical use | Machine panel | Boiler room |
Which material? A contact thermometer should not switch large loads directly; where switching is needed it should act through a relay or contactor. Contact rating is confirmed per model.
Advantages
Indicator + Switch
- Two functions in one device
Alarm Contact
- NC / NO
Wide Scale
- From −30 to 250 °C
Remote Measurement
- Capillary types
Construction and Design Features
- Gas-filled bulb and capillary
- Dial and pointer
- Adjustable contact pointer
- Electrical terminal
Send the scale range, contact type, dial size and capillary length; we will confirm a suitable contact thermometer from stock.
How to Choose?
- Mounting and capillaryDecide direct or capillary mounting.
- PressureCheck thermowell needs for the bulb.
- Temperature and set pointDetermine scale and alarm temperature.
- Contact typeChoose NC or NO contact and rating.
Complementary Products
Why ORFA?
Other Thermometers
Bimetal Thermometers
Bimetal thermometers show temperature on a dial using the different thermal expansion of two metals.
Details →
Gas-Filled Thermometers
Gas-filled thermometers show temperature remotely through the pressure change of gas in a capillary.
Details →
Industrial Machine Thermometers
Industrial machine thermometers are sturdy, sheathed thermometers used to read temperature on pipelines and machines.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.