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6.2.3.
6.2.4.
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compensated differential pressure and about the
temperature at the beginning/end of the test as a result. If
no temperature sensor is connected, you may also perform
the tightness test without temperature compensation.
✓ The actions described in the chapter "Preparing for
measurement" have been performed.
1. Press [Mode].
2. Select
[Tightness
-
The tightness test view is opened.
3. Start the tightness test: Press [Start].
4. End the tightness test: Press [Stop].
-
The result is displayed.
Evacuation / vacuum display
The measurement takes place in the low pressure side.
✓ The actions described in the chapter "Preparing for
measurement" have been performed.
✓ The vacuum pump is connected to the 5/8'' connection on the
valve block.
1. Press [Mode].
2. Select [Evacuation].
-
The evacuation view is opened. The current pressure and the
evaporation temperature of water (H2O) is displayed.
Vacuum measurement
In order to achieve optimal measuring accuracy in vacuum
measurement, the measuring instrument must be zeroed at
ambient pressure.
Zeroing at ambient pressure must be performed for each
vacuum measurement.
•
In combination with the testo 570, the testo 552 can be
used as an external high-precision vacuum probe, if
connected to the front of the testo 570 using the
connection cable 0554 5520. The firmware version
1.09 or later must be installed for this.
•
Before connecting both devices, the testo 552 must be
switched on.
•
The testo 570 will only connect to the testo 552 once
GlobalTestSupply
www.
test].
∆P
is displayed.
6 Using the product
21
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sales@GlobalTestSupply.co
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