Measuring temperature and humidity
Temperature and humidity are both important test values during commissioning and also maintenance, for determining whether a refrigeration system or heat pump is in perfect condition.
Temperature and humidity measuring instruments
One app for all measurements
The testo Smart app guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.
New Features:
PRO measuring programs to increase the efficiency of your applications
Other applications
Manifolds and Smart Probes
Refrigeration circuit control
Efficient and reliable testing of systems
Vacuum gauges
Evacuating/vacuum measurement
Professional and highly precise pressure measurement
Leak detectors
Leakage testing/tightness test
Reliable detection of the smallest leaks for all common refrigerants
Electrical measuring instruments
Electrical testing
Safe testing of all electrical parameters of equipment and components
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
All about refrigeration measuring technology
Refrigeration knowledge in three modules
Download the exclusive practical guide for free now.
Understanding refrigeration systems
Evaluating refrigerants
Thermodynamics
Main components of the compression refrigeration circuit
Subcooling / Superheating
And much more ...
The Testo tools in use
With the testo 558s, the system density can be assessed easily and reliably, thanks to the clear visualization of pressure values and temperature compensation.
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.
Make your work easy – with the testo 565i.
Fully automatic evacuations with auto-stop function and self-starting vacuum hold test.