Ashcroft ATE-2 - Handheld Calibrator - Manual (Page 31)

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If the user selects an engineering unit which references water
column pressure, they can select a water temperature to factor
into the conversion. The pressure generated by a column of water
will vary with the temperature of the water. As there are industry
standard temperatures used as conversion factors when calibrat-
ing pressure measurement devices in terms of the height of a
column of water, the HHC uses three(3) conversion factors, (20°C
<factory default>, 60°F and 4°C).
The user may select one to use with the water column based
pressure units.
Temperature Selection for H2O Conversion Factor
To select the reference water temperature:
Press MENU key
Press DOWN or UP ARROW key to highlight “Units…”
Press ENTER
Press DOWN or UP ARROW key to highlight “H2O ref temp”
Press ENTER
Press DOWN or UP ARROW key to highlight “4 Deg C”, “60 Deg
F” or “20 Deg C”
Press ENTER to select temperature and exit to Measurement
Mode.
If one of the preprogrammed engineering units of pressure mea-
sure is not acceptable, the user can program the HHC to read in
a user defined unit.
Note: That the conversion factor programmed is always pro-
grammed in relation to PSI engineering units regardless of the
pressure units that the pressure module is calibrated in. The
conversion factor is 1.0 PSI= X custom units.
Programming User defined Units of Measure for
Pressure Modules
Press MENU key
Press DOWN or UP ARROW key to highlight “Units…”
Press ENTER
Press DOWN or UP ARROW key to highlight “User Units”
Press ENTER
Press UP and DOWN keys to select “Name” or “Conversion
Factor”
Programming Unit of measure Name (up to 6 characters)
Select “Name”
Press ENTER
“Enter Unit Name” screen appears
Select H2O Ref
20C
60F
4C
Enter Unit Name
Newton
^
Enter to accept
Esc to cancel
SECTION 15 d. H
2
O TEMPERATURE CONVERSION
SELECTION
SECTION 15 e. PROGRAMMING USER DEFINED
UNITS OF MEASURE
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