TRS3-80MLR00

Introduction

TRS3-80MLR00 is an industrial temperature sensor made by Phoenix Contact, an international leader in electrical system components and applications. This thermistor is part of a range of mechanical thermostats. This article tells sheds light on its application field and working principle.

Application Field

TRS3-80MLR00 is designed for use in various temperature-sensitive installations such as HVAC systems, medical refrigeration, vending machines, photovoltaic systems and facilities for traffic control and building automation. It is used to detect temperature variations in order to control the equipment to which it is connected.

Working Principle

The TRS3-80MLR00 is a mechanical temperature sensor. The sensing element is a capillary tube filled with a liquid such as alcohol or propylene glycol. The tube is formed into a coil or helix and encased in a stainless steel housing. The liquid inside the tube expands or contracts in response to changes in temperature. This expansion or contraction causes a diaphragm to flex ("flexible element"), which in turn causes a pin (plunger) to move up or down, depending on the direction of temperature change.

The change in position of the plunger is transferred to the thermostat head, where it moves a mechanism that opens or closes a contact. When the temperature exceeds the desired set point, the contact is opened and a signal is sent to the control system to shut off or limit the flow of electricity to the device being monitored. This shuts down the device in order to prevent overheating or provide other safety functions.

Conclusion

The TRS3-80MLR00 is an industrial temperature sensor offered by Phoenix Contact. It is a mechanical thermostat designed for use in a variety of temperature-sensitive applications. Its working principle is based on a capillary tube filled with a liquid that expands or contracts in response to temperature changes, thereby causing a diaphragm to move a pin, which in turn opens or closes a contact. This contact is then used to control the operation of the device in order to maintain a desired temperature or provide other safety functions.