Tegam R1M-A Operation And Maintenance Manual
  1. Manuals
  2. Brands
  3. Tegam Manuals
  4. Measuring Instruments
  5. R1M-A
  6. Operation and maintenance manual

Tegam R1M-A Operation And Maintenance Manual

Megohmmeter
Hide thumbs
Table of Contents

Advertisement

Quick Links

R1M-A, R1M-AR
MEGOHMMETER
MODEL R1M-A, R1M-AR
Operation and Maintenance Manual
PN# R1M-A-900-01
Publication Date: December 2012
REV. C
REPRODUCTION AND DISTRIBUTION OF THIS TECHNICAL MANUAL IS AUTHORIZED FOR US
GOVERNMENT PURPOSES. TEGAM PROPRIETARY INFORMATION.
NOTE: This User's Manual was as current as possible when this product was manufactured. However,
products are constantly being updated and improved. To ensure you have the latest documentation, refer
to
www.tegam.com
10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
•
sales@tegam.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the R1M-A and is the answer not in the manual?

Questions and answers

Related Manuals for Tegam R1M-A

Summary of Contents for Tegam R1M-A

  • Page 1 NOTE: This User’s Manual was as current as possible when this product was manufactured. However, products are constantly being updated and improved. To ensure you have the latest documentation, refer www.tegam.com 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 2: Table Of Contents

    Table 7: Vendor Cage Code Directory ......5-19 6. SERVICE INFORMATION Preparation for Repair or Calibration Service ..... 6-1 Expedite Repair and Calibration Form ....... 6-2 Warranty ..............6-3 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 3: Instrument Description

    10 G 10 M 100 G 100 M Table 1: Specifications Accuracy: Resistance accuracy on all ranges: ± 5% Test Voltage accuracy on all ranges: ± 3% 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 4: Description Of Equipment

    A LED is provided to indicate that the test voltage is on. is a 3 ½ digit LCD, displaying readings from 1.999 DISPLAY to 199.9. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 5: List Of Items Furnished

    The R1M-A should be stored in a relatively dust-free environment. Temperature: -40 °C to +71 °C. Relative humidity: 0 to 100%, non-condensing. Altitude: 4570 m See Section 5.7 below for shipping requirements. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 6: Preparation For Use And Installation

    Do not measure resistors less than 50 kΩ with the R1M-A; it may damage the instrument. WARNING SHORTING THE ‘TEST’ and ‘SIGNAL’ LEADS TOGETHER WILL CAUSE INSTRUMENT DAMAGE. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
  • Page 7 The shorting link on the GROUND binding post may be swung around and connected to the GUARD binding post to ground the R1M-A circuitry. This may be done only if there is no external voltage with respect to ground on the measured resistor or guard.

  • Page 8: Figure 1: Connection Diagram

    PREPARATION FOR USE AND INSTALLATION Figure 1: Connection Diagram 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 9: Operating Instructions

    ENERGIZED COMPONENT COULD CAUSE SERIOUS HARM TO THE OPERATOR AND/OR DAMAGE THE R1M-A. BE SURE THE ITEM TO BE MEASURED IS DISCONNECTED FROM OTHER COMPONENTS AND APPARATUS. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 10: General Theory Of Operation

    Ohm's law and displays it on a 3 ½ digit display. To obtain the best accuracy, allow the R1M-A to warm up for 15 to 30 minutes before making measurements. In any case, a minimum warm-up of 30 seconds is advised.

  • Page 11: Principles Of Operation

    If so, they will be charged during ‘TEST’, but discharged automatically as soon as S3 is released. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
  • Page 12 However, if the test voltage is increased, the signal current and the voltage output of U3 will increase. To compensate for this, the amplifier section of U1 having pins 1, 2, and 3 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
  • Page 13 U4. S2B provides the proper logic levels to the quad exclusive-or gate U6 to locate the decimal point on the display. R33, 34 and 35 are pull-down resistors. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 14: Maintenance

    0.1% or better. A standard digital voltmeter: 3 ½ digits minimum, with 19.99 and 999 V ranges, accuracy of 0.02% of reading or better. HP/Agilent 34401A or equivalent. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 15: Performance Verification

    50 V and then with 500 V (but DO NOT CHECK THE 50 kΩ AT 500 V). All readings must be within 5% of the actual value. If not, adjust the trimpots as described below. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 16: Calibration

    TOUCH ANYTHING EXCEPT THE SCREW ADJUSTMENT OF R32! Adjust R32 for 0 ± 0.1 V on the voltmeter. Turn the power off and remove the voltmeter leads. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 17: Troubleshooting

    Note that even with the TEST button released; high voltage still exists between the transformer secondary and R37. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 18: Table 2: Fault Symptoms And Repair Actions

    Adjust R14. too high or too Table 2: Fault Symptoms and Repair Actions After trouble-shooting and repair, the instrument must be recalibrated in accordance with 5.5 above. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 19: Preparation For Shipment

    5.8 Overhaul Instructions The R1M-A is an all solid-state unit and requires no periodic overhaul, other than routine cleaning, inspection of cables per section 5, and calibration per section 5.5.

  • Page 20: Figure 2: Front Panel Controls

    Power Switch Test Voltage Range Switch Ohms Range Switch Test Voltage Jack Signal, Guard & Ground Binding Posts Voltage Present Test Pushbutton Figure 2: Front Panel Controls 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 21: Figure 3: Front Panel-Rear View

    MAINTENANCE Figure 3: Front Panel - Rear View 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 22: Figure 4: Simplified Block Diagram

    MAINTENANCE Figure 4: Simplified Block Diagram 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 23: Figure 5: Power Supply Schematic

    MAINTENANCE Figure 3: Digital Section Figure 5: Power Supply Schematics 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-10...
  • Page 24 MAINTENANCE Figure 6: Power Supply Board Layout 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-11...
  • Page 25 MAINTENANCE TEGAM, Inc. Figure 4: Parts Layout Figure 7a: Display Board Schematic 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-12...
  • Page 26 MAINTENANCE Figure 7b: Display Board Schematic 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-13...

  • Page 27: Figure 8: Display Board Parts Layout

    MAINTENANCE Figure 8: Display Board Parts Layout 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-14...

  • Page 28: Figure 9: System (Side View) Layout

    MAINTENANCE Figure 9: System (Side View) Layout 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-15...
  • Page 29 Serial Number TEGAM Warranty Sticker TEGAM Calibration Sticker TEGAM Model 850 Surface Electro-Tech Systems, Resistance Probes Inc. Packaging Table 3: Parts List – Board Assembly 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-16...
  • Page 30 24 AWG Gray Wire 4" For +HV 24 AWG Yellow Wire 4" For +Eout 24 AWG Violet Wire 4" Table 4: Parts List – Display Board 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-17...
  • Page 31 18 AWG Black Wire 10" 18 AWG Green Wire 7" 18 AWG White Wire 7" 4" Cable Ties Tyton T18R Table 5: Parts List – Front Panel Assembly 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-18...

  • Page 32: Table 7: Vendor Cage Code Directory

    OP7Z6 TYTON 3E655 GE (MG CHEMICALS) L3160 VISHAY SILICONIX CE463 GRAYHILL 81073 VOLEX POWER CORDS U7112 ILLINOIS CAPACITOR 74840 Table 7: Vendor Cage Code Directory 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com 5-19...

  • Page 33: Service Information

    Once this information is prepared and sent with the instrument to our service department, we will do our part in making sure that you receive the best possible customer service and turnaround time possible. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 34: Expedite Repair And Calibration Form

    When is the problem most frequent?, has anything changed with the application since the last time the instrument was used?, etc. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...

  • Page 35: Warranty

    Repaired products are warranted for the remaining balance of the original warranty, or 90 days, whichever period is longer. 10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com...
  • Page 36 TEGAM specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. In no event will TEGAM be liable for special or consequential damages. Purchaser’s sole and exclusive remedy in the event any item fails to comply with the foregoing express warranty of TEGAM shall be to return the item to TEGAM;...

This manual is also suitable for:

R1m-ar

Table of Contents