Vacuuming is one of the most important steps in installing or restarting an air conditioning or refrigeration system: impurity gases, water vapors, and oils need to be properly removed. At this point, it is necessary to measure the degree of vacuum in the system.
This is the original design of the testo 552 digital vacuum gauge: to provide you with accurate information on the degree of system dehumidification and impurity removal, and to measure even the absolute absolute pressure value with extremely accurate and reliable. This means that the user can always meet the manufacturer`s specific requirements for the system. When the limit is exceeded, a visual alarm is issued in time.
Testo 552 digital vacuum gauge features
1. Maintenance-free absolute pressure sensor
2. High precision, extremely sturdy, super practical ? large display with backlight display, and visual alarm when over limit
3. Directly measure the absolute pressure, automatically calculate and display the evaporation temperature of water
Testo 552 vacuum pressure gauge specifications (technical parameters):
Measuring range: 26.66 ~ 0 mbar /20000~ 0 micron
Measurement accuracy: 100~ 1000 micron: ±10% +10micron
Resolution: 1micron
Overload: absolute: 6.0 bar / 87 psi (relative: 5.0 bar / 72 psi)
Protection level: IP42
Battery type: 2 x AA (not included)
Battery life: 2,400 h (approx. 130 h with backlighting activated)
Connection: 2 x 7/16`` UNF; 1 x MiniDIN (connection to testo 570)
Diameter: 250 x 165 x 55 mm
Operating temperature: -20 ~ +50 °C
Parameters: mbar; micron
Measuring ratio: 0.5 s
Storage temperature: -20 ~ +50 °C
Weight: 500 g