IPF
Page 4
Equipment
Specifications
Current Source
Calibrated, adjustable. Must be capable of discrete output levels within the appropriate, rated
range for the unit under test; 4-20 or 10-50 mA. Refer to model number and table 1.
DC Milliammeter
Calibrated. Accuracy of ±0.1% (optional equipment)
Air Supply
Filtered, regulated, instrument-quality. Refer to appendix A of this manual for more detailed
specifications/filtration requirements.
Air Pressure
Gauges
Two calibrated gauges; #1 with accuracy of ±2%, #2 with accuracy of ±0.1%.
Pneumatic Test
Load
Calibrated. Volume of approximately 120 ml (75 in
3
), per IEC spec #770.
Screwdriver
Slotted-tip. Head width of 5 mm (0.1875 in), maximum.
Calibration Equipment
Table 2 lists the equipment required to calibrate the
IPF. This equipment is not supplied by Moore
Industries, but should be available in most labs or
maintenance areas.
Calibration Setup
To prepare the IPF for calibration, disassemble the
unit as shown in figure 1, and connect it to your
calibration equipment as shown in figure 2, which
shows the calibration setup.
Unit Connections and Controls.
The IPF has two,
labeled terminals on its faceplate, located under the
top, protective cover of the housing. NE-type units’
terminals are enclosed in a separate, external sub-
housing labeled “TERMINAL CONNECTIONS” .
The terminal labeled “+
I
” is for connection of the
positive current input, and the terminal labeled “–
I
”
is for negative connections.
The two IPF controls are also located inside the unit
housing on the faceplate. They consist of a me-
chanical adjustment screw and an electronic potenti-
ometer (pot), each accessed through holes in the
unit front panel. The following labels are used:
...controls the setting for unit zero.
...controls the setting for unit span.
Table 2.
IPF Calibration Equipment
