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Oxford Instruments 233 User Manual

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233
User Manual
P/N: 51-98-3090-00022
Oxford Instruments Coating Measurement
360 El Pueblo Rd, Scotts Valley CA 95066
Tel: (831) 439-6000 Fax: (831) 439-6050
Email:
contact.support@oxinst.com
www.coatingmeasurementstore.com
Non-Warranty Customer Service:
ccc.oia@oxinst.com
(978) 369-9933
© Copyright 2006 Oxford Instruments
Measurement Systems
The information in this document is private and confidential and must not be copied.
Oxford Instruments plc

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  • Page 1 360 El Pueblo Rd, Scotts Valley CA 95066 Tel: (831) 439-6000 Fax: (831) 439-6050 Email: contact.support@oxinst.com www.coatingmeasurementstore.com Non-Warranty Customer Service: ccc.oia@oxinst.com (978) 369-9933 © Copyright 2006 Oxford Instruments Measurement Systems The information in this document is private and confidential and must not be copied. Oxford Instruments plc...

  • Page 2: Table Of Contents

    Setting the Date and Time ........................15 Printing the Date and Time ........................16 ..........................16 UTPUT ELECTIONS Oxford Instruments Contact Measurement Page 2 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied. Oxford Instruments plc...
  • Page 3 APPENDIX A ..............................19 Troubleshooting ...........................19 APPENDIX B ...............................21 Eddy Current ............................21 Magnetic Induction ..........................23 Oxford Instruments Contact Measurement Page 3 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied. Oxford Instruments plc...

  • Page 4: Introduction

    LOCATION OF INSTRUMENT The 233 is a hand-held plating thickness gage designed to be used in a shop environment. All cable connections are covered to prohibit foreign matter from getting into the unit. The carrying case provides additional coverage of any openings on the unit.

  • Page 5: Probe

    PROBE The 233 uses the ECP, SMP-1, and SMP-2 probes. It utilizes Eddy Current (with the ECP) or Magnetic Induction technology (with the SMP-1 and SMP-2) to perform the coating measurement. For more information on the theory of these technologies see Appendix B.

  • Page 6: Applications

    2. To make and store an individual calibration choose any location from 1 to 51 for a Magnetic application and 51 to 99 for an Eddy Current application. Then calibrate the gage as described in How to Make Calibrations. Oxford Instruments Contact Measurement Page 6 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 7: How To Assign Universal Calibration Locations

    Re-zero the unit as stated in step 2. b. Place the desired shim over the bare part. c. Press the CAL key. Oxford Instruments Contact Measurement Page 7 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 8: Two Point Calibration

    The two point calibration is performed with two shims according to the expected measurement range. See table below. For ranges greater than 10 mils (254 um), consult Oxford Instruments Technical Support for shim size information. Measurement Range First Shim Value...

  • Page 9: Base Calibration

    11. Check the display. If incorrect, press the CLEAR key and re-enter the number. When finished, lift the probe at least 3 inches (76 mm) away from the part and press the ENTER key. 12. The 233 is now calibrated and ready for measurement. Base Calibration 1. Press the CAL key.

  • Page 10: Memory Management

    MEMORY MANAGEMENT Memory Structure The 233 has 99 memory locations. Each location stores a calibration, statistics and readings. Locations 1 to 50 are allocated for Magnetic applications and location’s 51 to 99 for Eddy Current applications. The memory location is shown in the upper left of the display.

  • Page 11: How To Clear All Memory Locations

    3. Place the probe on the sample to be measured. Press the ENTER key to capture the reading. Oxford Instruments Contact Measurement Page 11 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 12: Scan Mode

    Scan Mode The 233 can be configured with the optional Scan Mode feature. Units with this feature allow for sliding the probe around the surface of a sample to obtain an average thickness of the coating on the sample. This feature is convenient for measuring large samples or for samples where the thickness of the coating varies across the surface.

  • Page 13: Statistics

    “STAT”. 5. To continue the clearing process, press the CLEAR key again to confirm that the statistics are to be cleared. Oxford Instruments Contact Measurement Page 13 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 14: Offsets

    The offset will be removed. The unit will revert to the measurement mode. LIMITS Limits can be entered into the 233 gage to provide an indication that a reading exceeds a high or low thickness specification. When a reading is taken in the Regular Mode that falls outside of the limits, there will be a long beep and the word “HI”...

  • Page 15: How To Set Limits

    DATE AND TIME STAMP The 233 has a Date and Time Stamp feature. This feature is supplied in one of the two options described in Memory Capacity. The date and time information will be included when statistics and readings are printed, or uploaded to a PC.

  • Page 16: Printing The Date And Time

    How to Add a Separator Character 1. With the Separator Character Feature enabled, press the MEAN key in the measurement mode. Oxford Instruments Contact Measurement Page 16 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 17: Blocks

    Blocks The 233 can be ordered with the Block feature installed. This allows the labeling of specific blocks of readings within a memory location. The purpose of the Block feature is to separate groups of readings to be transmitted as Serial Output.

  • Page 18: Printing Output

    3 seconds when the required option is displayed. SERIAL OUTPUT The stored readings can be uploaded to a PC with the Oxford Instruments upload cable. 1. Connect the cable to the serial output port of the gage and connect the other end of the cable to a PC that has software suitable for receiving serial data.

  • Page 19: Troubleshooting

    Or make sure the correct units of measurement are being used, i.e. do not enter .86 um instead of .86 mils. Oxford Instruments Contact Measurement Page 19 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.
  • Page 20 This clears all calibrations, statistics, and probe tuning information from every memory location. After this procedure is used, retune all probes and re-calibrate the gage. Oxford Instruments Contact Measurement Page 20 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 21: Eddy Current

    Inherent Base Variation Base variation can also be due to inherent variations in electrical conductivity or magnetic permeability due to the manufacturing processes. To determine the Oxford Instruments Contact Measurement Page 21 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.
  • Page 22 Cr plating generally has many cracks in the surface that would cause inaccurate readings. The Cu base must be at least 0.030” thick. When calibrating with the 0.5 mil standard the recommended tracking range is 0 to 1.0 mil, but the Oxford Instruments Contact Measurement Page 22 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 23: Magnetic Induction

    Since the magnetic method measures coating thickness as the probe distance from the surface of the base material, surface roughness will cause variations in surface to probe contact and affect both the repeatability and the accuracy of Oxford Instruments Contact Measurement Page 23 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

  • Page 24: Oxford Instruments Contact Measurement

    If a stainless steel substrate is magnetic (400 Series), then the magnetic induction method can be used in measurements. If the stainless steel in non- magnetic (300 Series), no measurements can be made. Oxford Instruments Contact Measurement Page 24 of 24 233 USER GUIDE The information in this document is private and confidential and must not be copied.

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