TESTO 312-4, Инструкция по эксплуатации

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6 Using the product
23
Pabs (absolute pressure)
The absolute pressure that is used to calculate the density can be
set.
1. Set absolute pressure using or . Hold the key down to
go forward/back quickly.
2. Confirm the selection with .
6.1.6. Gas type
1. Use or in main menu to select Gas type .
2. Confirm the selection with .
3. Select Town gas , Nat gas or Air with or .
4. Confirm the selection with .
6.2. Measuring
6.2.1. Important information for pressure measurement
Temperature fluctuations and positional changes have an effect on
the accuracy of pressure measurements:
• The entire measuring system must be adapted to the ambient
temperature and to the temperature of the pipe system to be
tested.
• The temperature of the measuring system and the pipe system
must remain stable during measurement.
• The position of the measuring system must not change during
measurement.