Fairchild T6000 - Calibration and Adjustments; Equipment Required for Calibration; Forward Acting Mode Adjustment; Reverse Acting Mode Adjustment

5
CALIBRATIONS / ADJUSTMENTS
FULL RANGE OPERATION
CAUTION: Over-ranging the Zero Screw can damage unit.
Forward Acting Mode Adjustment
1.
Connect the input signal to the transducer as shown
in Figure 9.
Repeat steps 2-3 until the desired output range is
obtained.
• Pneumatic Supply capable of delivering up to 150 psig.
• Current Supply capable of delivering up to 60 mA.
• Pressure Gage capable of a digital readout up to 50 psig
with an accuracy of .1%.
• Digital Volt Meter capable of a readout up to 60 mA with
an accuracy of .02%.
4.
• Forward Acting Calibration-Zero
2.
Apply the minimum input signal and adjust the Zero
screw for minimum output pressure. Turn screw
clockwise to increase pressure and counterclockwise
to decrease pressure.
Apply the maximum input signal and adjust the Span
screw for maximum output pressure. Turn screw
clockwise to increase pressure and counterclockwise
to decrease pressure.
Reverse Acting Mode Adjustment
5.
• Reverse Acting Calibration-Zero
6.
Apply the minimum input signal and adjust the Zero
screw for maximum output pressure. Turn screw
clockwise to increase pressure and counterclockwise
to decrease pressure.
• Forward Acting Calibration-Span
3.
8.
• Reverse Acting Calibration-Span
7.
Apply the maximum input signal and adjust the
Span screw for minimum output pressure. Turn
screw clockwise to decrease pressure and
counterclockwise to increase pressure.
SPLIT RANGE OPERATION
All units have the capability to be split ranged or set for
any output in the range as long as the Output Span is
equal to or greater than the minimum Span.
Equipment Required for Calibration:
Repeat steps 6-7 until the desired output range is
obtained.
Connect the input signal to the transducer as shown
in Figure 9.
Figure 9