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Operating Information 3-3
Conversely, if the analog output voltage is measured, then the pressure reading is
given by:
Internal Adjustments
The internal adjustments are factory set and should never need to be changed.
However, if the need arises and suitable standards are available the following
adjustments can be made. (see figure on page 3-4)
Full Scale
The full scale potentiometer changes the display by changing the sensitivity of the
instrument. Apply a calibrated +10 VDC signal to the Sig Hi and Sig Lo pins on
the back of the power supply. The display of the instrument should read 1000.0,
100.00 or 10.000depending upon the configuration. Adjust the full scale
potentiometer (R11) if needed.
Analog Output
The analog output potentiometer changes the analog output voltage by changing
the gain on the output buffer amplifier. Apply a calibrated pressure standard to the
transducer and refer to equation (1). Adjust the potentiometer (R18) as needed.
Notes on internal adjustments:
* Both the full scale reading and the analog output voltage can
change by only ± 10%.
** Zero adjustment can only be performed on the transducer itself. See the
HCM-6000 series transducer manual Section 3.
(4)