Refrigeration technology

Checking the refrigeration circuit

Regular and accurate checking of the refrigeration circuit is an essential part of ensuring the safe and efficient operation of a refrigeration system. This ensures that all components are working properly and that there are no leaks, pressure drops or contaminants affecting the refrigerant circuit. This keeps the system running efficiently and optimizes energy consumption.

Checking the refrigeration circuit

The digital manifolds in use

Thanks to the large colour display and wireless connection to the probes, all important parameters are visible at a glance. The 30-minute trend curves also ensure even more reliable analysis.

With the testo 558s, the system density can be assessed easily and reliably, thanks to the clear visualization of pressure values and temperature compensation.

The Testo starter kits

testo Smart App

One App for all applications

The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.

Now new:

PRO measuring programs for increasing the efficiency of your applications

Other applications

Evacuating refrigeration systems

Vacuum gauges

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Evacuating/vacuum measurement

Fully automatic evacuation and high-precision pressure measurement

Charging refrigeration systems

Refrigerant scales

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Charging

Automatic and precise charging according to target value

Testing electrical parameters in refrigeration systems

Electrical measuring instruments

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Electrical testing

Safe testing of all electrical parameters of equipment and components

Detecting leaks in refrigeration systems

Leak detectors

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Leakage testing/tightness test

Reliable detection of the smallest leaks for all common refrigerants

Measuring temperature in refrigeration systems

Thermometers

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Temperature measurement

Flexible temperature measurement of components and ambient air

All about refrigeration measuring technology

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What’s new?

Measurement technology for heat pumps

With a digital manifold, you carry out the commissioning and servicing of heat pumps quickly, flexibly and precisely. The intuitive touchscreen, the clear visualization of the readings and the Bluetooth connection to the probes and testo Smart App all make measurement and documentation easier.

  • Pressure and temperature testing

  • Controlled refrigerant service

  • Easy tightness testing and evacuation

Carrying out measurements on heat pumps
HVAC/R Magazine 02/2025

Free of charge, full of value.

Our latest HVAC/R magazine gives you insight into the most important technological trends in the industry – and the tools you need to stay ready for change. You’ll also find expert tips and real-world examples that help you work more efficiently with testo instruments.

Contact
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