TESTO 552 User Manual

4 Operation
14
4 Operation
4.1 Connecting
Always use refrigerant hoses that are specifically intended for
evacuations.
1 - Remove sealing caps.
- Connect the testo 552 to the circuit.
4.2 Switching instrument on and off
1
- Press .

The instrument switches on or off.

The instrument displays oooooo
when ambient pressure is applied to
the connections. The display
indicates the applied pressure value
once the applied pressure is within
the measuring range. (0 to 20,000
microns).

TESTO 552 Specifications

General

Type	Digital Vacuum Gauge
Measurement Range	0 to 26.66 mbar / 0 to 20000 microns
Battery Type	2 x AA batteries
Display	LCD
Bluetooth	Yes
Protection Class	IP40
Storage Temperature	-20 to +70 °C
Resolution	1 micron (0 to 1000 microns)
Operating Temperature	-10 to +50 °C
Accuracy	±10 microns + 10% of m.v. (100 to 1000 microns)