Druck DPI 142/150 Calibration Manual
Calibration Check DPI 142 and DPI 150 with Option A
After a successful leak test, set the instrument indicator mode:
1. Connect the pressure standard for the pressure range to be checked.
Note:
In DPI 150 instruments, Option A connects internally to the negative
(reference) pressure port.
2. Adjust the pressure standard to the first pressure value (A) in the Table 3.
3. Compare the pressure value of the pressure standard to the value displayed
and record the difference.
4. Repeat steps 2 and 3 for pressure value (B) in the Table 3.
5. If the recorded difference exceeds the tolerance in the table, the instrument
needs a calibration adjustment.
6. Adjust the pressure standard to the first pressure value (A) in the Table 3.
Pressure Ranges
The DPI 142 instrument and the DPI 150 instrument with Option A
*
have the
following pressure ranges.
Table 3
Applied Barometric Pressures
Applied Pressure
Tolerance
A
± 0.01%FS
B
± 0.01%FS
Barometric Range
Pressure Values
A
B
*
750 to 1150 mbar absolute 750 mbar
1150 mbar
35 to 1310 mbar absolute
35 mbar
1310 mbar
35 to 2620 mbar absolute
35 mbar
2620 mbar
35 to 3500 mbar absolute
35 mbar
3500 mbar
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