Bently Nevada 3500/60 133811-01 Interface bus sensor system

Description

3500/60 133811-01 Successful completion of the following procedure assures proper transducer calibration.
a. Connect test equipment as shown in Figure 3-1.
b. Adjust the spindle micrometer on the TK3 test and calibration kit until it indicates 20 mils (0.51 mm).
c. Insert the probe into the TK3 probe holder. Adjust the probe in the holder until the digital multimeter indicates -2.00 ±0.01 Vdc and tighten the probe in the fixture. Do not contact the probe tip.

d. Adjust the micrometer to a 15 mil (0. 38 mm) indication, then back to a 20 mil (0. 51 mm) indication and record the output voltage. Going to the 15 mil (0. 38 mm) indication first will eliminate any play in the micrometer before taking the 20 mil reading.
e. Increase the gap in 20 mil increments by adjusting the micrometer. Record the voltage indication at each increment.
f. Either plot each voltage indication obtained in step e or compare each to the desired calibration curve in Appendix C.
g. If the transducer is out of tolerance (refer to the specifications), recalibrate.

3500/60 133811-01 Perform the following procedure to recalibrate the transducer.
a. Remove the protective assembly from the calibration resistor on the Proximitor (use a screwdriver to pry away the outer barrier). Desolder and remove the calibration resistor .
b. Attach the variable resistor between the calibration resistor terminals.
c. Perform the calibration check (Page 3-1) and adjust the variable resistor as appropriate until the desired calibration curve is obtained.

3500/60 133811-01 NOTE
Increasing the resistance between the calibration terminals will decrease the Proximitor output voltage and slope of the calibration curve; decreasing the resistance will cause the Proximitor output voltage and slope of the calibration curve to increase.
d. When the desired average scale factor is obtained, remove the variable resistor from the calibration terminals and use the digital multimeter to measure its resistance. Select a 1% tolerance resistor (or two in parallel) equal to the measured resistance of the variable resistor.
e. Solder the resistor(s) between the calibration terminals.

CAUTION
To prevent damage to components, do not leave the soldering iron in contact with the Proximitor terminals too long.
f. Remove the room-temperature vulcanizing compound from the epoxy fiberglass shroud.
g. Install the shroud over the calibration resistor(s) and encapsulate with room-temperature vulcanizing compound that does not have an acid base.

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137412-01 3500/93 Manual
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135799-02 3500/93 Display Interface Module
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136634-0010-01 10 Foot (3 metres) Cable (PVC)
136634-0050-01 50 Foot (15 metres) Cable (PVC)
136634-0050-02 50 Foot (15 metres) Cable
(Teflon? )
136634-0100-01 100 Foot (30 metres) Cable (PVC)
136634-0100-02 100 Foot (30 metres) Cable
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130121-02-02 500 Foot (152 metres) Extension
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02200271 External Power Supply for 115 Vac
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138227-01 Cable Adapter
146085-01 Power Cable
137224-01 System Mounting Assembly
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04309007 4-40 X 0.63 Phillips head screw for
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