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TROUBLESHOOTING

Accumeasure™ 9000 Probe Amplifier modules require specialized servicing techniques and should not be
serviced  in  the  field.  The  troubleshooting  table  in  this  section  should  help  you  determine  if  the  problem
exists in the Accumeasure equipment or in your auxiliary equipment. If the trouble is in the Accumeasure
System 9000, it should be returned to the factory for servicing.
Before following the troubleshooting procedure:
1.

Set  up  a  probe  and  grounded  target  so  that  probe-to-target  gap  is  within  the  probe  full  scale
range,

2.

Connect the probe to the Accumeasure™ 9000 Probe Amplifier with an MTI probe cable,

3.

Apply AC power within the specified operating range to the Probe Amplifier.

4.

Set  the  Probe  Amplifier  controls  so  the Accumeasure™  9000  is  within  normal  operating
conditions.

CAUTION

Observe all electrical safety precautions when performing maintenance.

Содержание AccuMeasure 9000

Страница 1: ...013 AccuMeasure 9000 Capacitance Sensor Amplifier Users Manual MTI Instruments Incorporated 325 Washington Avenue Extension Albany New York 12205 USA Phone 518 218 2550 or 800 342 2203 USA Only Fax 51...

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Страница 3: ...i Revision History Rev 4 0 Release...

Страница 4: ...vided and upon the expiration of the warranty period of all such a liability shall terminate The foregoing shall constitute the exclusive remedy of the purchaser and the exclusive liability of the Sel...

Страница 5: ...al is written in an official language of the Member State Contact MTI Instruments for the availability of translated manuals WARNING ELECTRICAL SHOCK ELECTROCUTION HAZARD This equipment is connected t...

Страница 6: ...RN SHIPMENT PROCEDURE 5 2 OPERATING PRINCIPLES 6 3 INSTALLATION INSTRUCTIONS 8 3 1 POWER REQUIREMENTS 8 3 2 CONNECTIONS 9 3 3 CONTROL SWITCHES 13 3 4 DISPLAYS 13 3 5 PROBE MOUNTING 14 3 6 PROBE CABLES...

Страница 7: ...parasitic capacitance and ensure the highest linearity Front panel gain and offset controls permit minor adjustments of the probe calibration characteristics An internal 5 pole Butterworth low pass f...

Страница 8: ...to 40 C 40 to 100 F Storage Temperature 15 to 65 C 5 to 150 F Dimensions LxWxH 241x165x56mm 9 5x6 5x2 2 Mass 2 3kg 5lbs Probe Voltage 8 5Vrms Max Bargraph Proportional to gap 10 of range per bar 1 Al...

Страница 9: ...Cryogenic and Vacuum compatible probes are available Contact the factory Accuracy 0 05 of range when calibrated to a known standard Probe Cable Interchangeability Accurate within 0 5 of range without...

Страница 10: ...r optional digital panel meter s should be illuminated Without a probe cable s attached to the probe connector on the front panel all of the bargraph display segments should be fully illuminated Instr...

Страница 11: ...al shipping carton if available and forward prepaid to MTI Instruments Inc Supervisor of Manufacturing 325 Washington Avenue Extension Albany NY 12205 5505 Mark RMA and the RMA number if a number is i...

Страница 12: ...on the principle of parallel plate capacitor measurement The electrical capacitance formed between an Accumeasure TM probe and a target surface varies as a function of the distance gap between these...

Страница 13: ...C voltage that is linearly proportional to the average value of the probe gap impedance and an AC voltage variation from the DC voltage that is directly proportional to the amplitude of the target vib...

Страница 14: ...1 Remove the power cord from the rear panel power receptacle 2 Pry up one end of the power receptacle cover by inserting the blade of a small screwdriver under the tab next to the CORCOM lettering 3...

Страница 15: ...ding post labeled GROUND on the rear panel see Figure 7 Accumeasure 9000 1 Rear Panel or The displacement voltage output signal s is available from the BNC connector s labeled 1 2 and SUM on the rear...

Страница 16: ...fset Switch Indicator Offset Adjustment Probe Input Offset Switch Indicator Offset Adjustment Digital Display Power Indicator Gain Adjustment Figure 3 Accumeasure 9000 1 Front Panel Digital Display Fi...

Страница 17: ...2 Gain Adjustment Channel 1 Bargraph Display Channel 1 Offset Switch Indicator Channel 2 Offset Switch Indicator Probe Input Channel 1 Probe Input Channel 2 Channel 2 Offset Adjustment Channel 2 Digi...

Страница 18: ...ignal Output 20 W 50 60 Hz 1 100 240 VAC T 0 4A 250V Signal Output Signal Output Ground Connection Power Cable Connection Fuse On Off Switch Signal Output 2 1 20 W T 0 4A 250V 100 240 VAC 50 60 Hz SUM...

Страница 19: ...see 4 1 Probe Amplifier Calibration Check The external offset potentiometer is dis engaged when the switch is set to its out position The control is engaged for offset adjustment when the switch set...

Страница 20: ...e probe face parallel to the target surface Probe tilt causes measurement errors so a tilt of less than 5 of range is recommended That would mean that for a 500um 20 mil range sensor the edge of the s...

Страница 21: ...manufactured feed through assemblies 3 7 Target Grounding The target being measured by the probes connected to the Accumeasure 9000 must be grounded directly to the board power supply grounds for the...

Страница 22: ...nge Gain is adjusted at 100 of range Use the following procedure 1 Set the voltmeter to monitor the output of the amplifier 2 With the unit turned off adjust the probe so it is lightly touching the ta...

Страница 23: ...n air gap equal to the maximum probe range value for the probe provided with the system The full range value is a function of the probe used and the zero voltage gap value For example a 20 mil range p...

Страница 24: ...ush that can be achieved and this is dependant on several factors including probe type and cable length The maximum push recommended is 40X When employing pushed amplifier and probe combinations the o...

Страница 25: ...0 volts 8 Connect the DVM or oscilloscope to the Channel 2 output and repeat steps 6 and 7 for Channel 2 output 9 Connect the DVM or oscilloscope to the sum signal output on the rear panel It should...

Страница 26: ...00 it should be returned to the factory for servicing Before following the troubleshooting procedure 1 Set up a probe and grounded target so that probe to target gap is within the probe full scale ran...

Страница 27: ...ield to center short circuit and probe for interelectrode short circuits 2 If jumper changes on the probe amplifier board have been performed since the unit has been received from MTI contact MTI to r...

Страница 28: ...ighted 1 Check the probe cable connection to the front panel ensure that the cable is securely attached to the receptacle 2 Check for an open circuit in the center wire of the probe cable 3 Check for...

Страница 29: ...probe support fixture to ensure the probe and the fixture are not loose 2 Check the shield on the sensor cable and the connectors in the sensor cable signal path for 100 shield integrity and connector...

Страница 30: ...FROM MTI INSTRUMENTS 1510A Battery Powered Signal Simulator Generator Proforma 300 Semiconductor Wafer Qualification and General Thickness measurement Capacitance MicroTrak Laser Triangulation Displa...

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