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CALIBRATIONS / ADJUSTMENTS
Equipment Required for Calibration:
• Pneumatic Supply capable of delivering up to 150 psig.
• Current Supply capable of delivering up to 30 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 30 mA with an accuracy of .02%.
FULL RANGE OPERATION
Lo/Hi Span Adjustment
Set the Lo/Hi Span switch to the required position for needed output and supplied MA input. For more detail information, see Figure 6.
"TXI
"TXI17800/TXI7850 Calibration Configuration".
Forward Acting Mode Adjustment
Set Fwd/Rev Mode switch to Forward position.
Forward Acting Calibration
1. Apply the minimum input signal to the Terminal Block and adjust the Zero screw for minimum output presure.
2. Apply the maximum input signal to the Terminal Block and adjust the Span screw for maximum output pressure.
3. Repeat steps 1-2 until the desired output range is obtained.
Reverse Acting Mode Adjustment
Set Fwd/Rev Mode switch to the Reverse position
Reverse Acting Calibration
1. Apply the maximum input signal to the Terminal Block and adjust the Zero screw for minimum output pressure.
2. Apply the minimum input signal to the Terminal Block and adjust the Span screw for maximum output pressure.
3.Repeat steps 1-2 until the desired output range is obtained.
SPLIT RANGE OPERATION
Lo/Hi Span Adjustment
Set the Lo/Hi Span switch to the required position for needed output and supplied MA input. For more detail information, see
Figure 6 "TXI7800/TXI7850 Calibration Configuration".
Forward Acting Mode Adjustment
Set Fwd/Rev Mode switch to Forward position.
Forward Acting Calibration
1. Apply the minimum input signal to the Terminal Block and adjust the Zero screw for minimum output presure.
2. Apply the maximum input signal to the Terminal Block and adjust the Span screw for maximum output pressure.
3. Repeat steps 1-2 until the desired output range is obtained.
Reverse Acting Mode Adjustment
Set Fwd/Rev Mode switch to the Reverse position
Reverse Acting Calibration
1. Apply the maximum input signal to the Terminal Block and adjust the Zero screw for minimum output pressure.
2. Apply the minimum input signal to the Terminal Block and adjust the Span screw for maximum output pressure.
3. Repeat steps 1-2 until the desired output range is obtained.
Additional Adjustments
Damping Adjustment
The Damping Adjustment is used so that the transducer can be tuned for optimum response and stability in a particular application.
For best performance start Damping Adjustment at maximum adjustment (fully clockwise). Gradually turn counterclockwise until
slight oscillation occurs and then turn back clockwise until oscillation is minimized. Turn damping adjustment clockwise to increase damping
function.
ATEX Directive- Special Conditions for Sale
The enclosure is manufactured from aluminum alloy. In rare cases, ignition sources due to impact and friction sparks could occur. This shall
be considered when the equipment is installed in locations that specifically require Group II, category 1G equipment.
mA
3
3
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