TESTO 552 User Manual

3 Description of the instrument
11
3.4 Control keys overview
Element Function
1 - Switches to the settings.
- Switches between the set-up options.
(This function is disabled, when connected to the
App with BT)
2 Switches the display illumination on or off.
3 Switches the instrument on or off.
4 - Switches between the temperature displays.
- Navigates in the Set menu.
5
+
Switches Bluetooth® on or off (press and hold down
for 3 sec.)
3.5 Connection options overview
In regard to the following connection options, the testo 570 is used to
represent any manifold and can use the testo 552 as a probe via a
MiniDIN connecting cable (see Option 2).
Option 1 (recommended)
The testo 552 is connected at the point that is furthest from the
vacuum pump. This ensures that a sufficiently deep vacuum is
generated throughout the system in order to remove any moisture or
foreign gases that may be present.

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)