What is the function of a temperature switch?

Temperature switches are used to indicate or alarm when a fluid has reached a certain temperature. In some applications temperature, switches can action an automated response when temperatures are too high or too low. For example, switching on a fan to cool the equipment, or shutting down overheating machinery.

What does normally open and normally closed mean?

When a switch is Normally Open (NO) the electrical contacts inside the switch are not touching, so the circuit is Open. When a switch is Normally Closed (NC) the electrical contacts inside the switch are touching, so the circuit is Closed. When used in this context, Normally refers to ambient temperature.

How do I choose a temperature switch?

To pick the right temperature switch, you need to know what temperature the switch needs to set at, the thread size and whether it should be normally open or normally closed.

What does hysteresis mean with temperature switches?

The term refers to the difference between the switch point and the reset point of the switch.

What are some applications for temperature switches?

Common applications for temperature switches include HVAC systems, overheating protection and freezer control, among other things.

MTM5581 Electronic Temperature Switch

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Technical Datasheet

The MTM5581 is an electronic pressure switch with a difference: it combines a local display, temperature measurement and control. Offering high accuracy, fast response time and consistent performance, the MTM5581 is perfect for use with gas and liquids and offers temperature ranges from -50°C to 200°C.

Features:

Perfect for gas and liquid
Temperature range from -50°C to 200°C
Switch and analogue output
Optional PNP, voltage and current output available
Available in a 50mm or 100mm stem

MTM5581 Electronic Temperature Switch

Features:

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