The electrical contact pressure type thermometer is a mechanical temperature measuring instrument that integrates temperature measurement, automatic control and alarm functions.

• Single contact: One setting pointer, used for upper limit alarm (such as over-temperature protection) or lower limit alarm (such as anti-freezing).
• Double contacts: Two setting pointers, which can be set for upper and lower limits respectively, used for automatic control within a temperature range (such as maintaining the temperature between 50°C and 80°C) or upper and lower limit alarms.

• Function integration and compact structure: One instrument simultaneously addresses the issues of "temperature viewing" and "temperature control", saving installation space and costs.
• Mechanical in nature, strong anti-interference: Free of electronic components, it is not affected by electromagnetic interference and operates stably in complex industrial electromagnetic environments.
• Explosion-proof and safe: It can work without external power supply (referring to the measurement part), is intrinsically safe, and is particularly suitable for flammable and explosive locations.
• Visible and adjustable control points: The set pointer is directly on the dial, making the control point clear at a glance, and it can be conveniently adjusted on-site through the knob outside the dial without tools or program modifications.
• Remote control possible: With long capillary tubes, the temperature bulb can be installed on distant equipment, while the control and indication parts are concentrated in the control room.

• Industrial process control: Temperature interlock for chemical reaction vessels, storage tanks, and pipelines. Automatically cut off the heat source or start the cooling system when the temperature exceeds the limit.
• Mechanical equipment protection: Over-temperature alarm for motor bearings, pump bodies, and hydraulic systems to prevent equipment damage due to overheating.
• HVAC and refrigeration: Automatic temperature control for central air conditioning water systems and cold storage facilities, and interlock with the start and stop of compressors and heaters.
• Energy and power: Monitoring of boiler water temperature and turbine lubricating oil temperature, with explosion-proof models suitable for flammable and explosive environments.
• Outdoor and remote scenarios: Pump stations and outdoor pipelines without power supply conditions. They not only indicate the temperature locally but also provide over-temperature alarms.

The electrical contact pressure type thermometer is a simple, direct and reliable "local automation commander". It perfectly inherits the advantages of pressure type thermometers such as sturdiness, explosion-proof and vibration resistance, and endows them with the intelligence of a "switch". Although it cannot compare with a fully electronic system in terms of control accuracy and contact life, in countless industrial scenarios where requirements are not high, local automation is needed and the environment is harsh, it remains a very popular choice due to its ultimate reliability, intuitiveness and convenient adjustability. As long as you keep in mind the golden rule of "small contacts control large relays", it can become your most capable automation assistant.