TESTO 570 Instruction Manual page 16

6 Using the product
16
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• 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
Evacuation
• The required pressure unit display must be set in the
testo 570.
• In order to be able to use the readings from the testo
552 via the testo 570 in the EasyKool software, you
need EasyKool software version 4.0 or later.
• (See testo 552 instruction manual.)
Surface temperature sensor
An NTC temperature sensor (accessory) must be connected for
measuring the pipe temperature and for automatic calculation of
superheating and subcooling.
Deactivating the surface compensation factor for immersion
and air temperature probe
A surface compensation factor has been set in the measuring
instrument to reduce the measuring errors in the main field of
applications. This reduces measuring errors when using surface
temperature probes.
If the measuring instrument testo 570 is used in combination with
insertion or air temperature probes (accessories), this factor must
be deactivated:
1. Press [Set].
2. Select the Probe
3. Select Immersion
4. Press [Esc].
- The surface compensation factor has been deactivated in the
device.
For measurements with a surface temperature probe the
probe type must be reset to surface probe.
Each time the device is switched on the surface
compensation factor is activated again as standard.
www.
mode has been activated.
type.
probe.
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