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
Multifunctional
Compatible with all Bluetooth-enabled Testo measuring devices.
Efficient
Reports can be sent directly via email.
Fast
All measured values at a glance.
Simple
Intuitive menus
Clever
Free to download, free to use (Base App)
NEW
PRO Measurement Programs (subscription required)
Other applications
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.