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Guildline 9711B Series Technical Manual

Multi-tap dc current shunt
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Model 9711B Series
Multi-Tap DC Current Shunt
Technical Manual
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments Limited. They are to be used only as a guide to the
operation and maintenance of the equipment with which this manual was
issued and may not be duplicated or transmitted by any means, either in whole
or in part, without the written permission of Guildline Instruments Limited.
TM9711B-A-00
6 November 2013

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Summary of Contents for Guildline 9711B Series

  • Page 1 NOTICE The contents and information contained in this manual are proprietary to Guildline Instruments Limited. They are to be used only as a guide to the operation and maintenance of the equipment with which this manual was issued and may not be duplicated or transmitted by any means, either in whole or in part, without the written permission of Guildline Instruments Limited.

  • Page 3: Table Of Contents

    Table of Contents Introduction Warranty To Obtain Warranty or Calibration and Repair Service 1.2.1 USA Warranty Return Address 1.2.2 Returns All Other Countries Safety Information 9711B Specifications Uncertainty Specifications General Specifications Overview of the 9711B General Operating Instructions 3.2.1 Maximum Current 3.2.2 Current Input Terminals 3.2.3...
  • Page 4 Maintenance Maintenance, Inspection and Cleaning 5.1.1 Inspection 5.1.2 Cleaning Troubleshooting 5.2.2 Short Circuit Troubleshooting Replaceable Parts TM9711B-A-00 6 November 2013...
  • Page 5 LIST OF FIGURES Figure 3-1 : 9711B Current Terminal Connections Figure 3-2 : 9711B Current Terminal Connections Figure 3-3 : Range Selector Plugs Figure 3-4 : Potential Terminals Figure 5-1 : 9711B Schemtic Overview LIST OF TABLES Table 4-1 : List of Recommended Test Currents or Voltages For Resistance Values Table 4-2 : 9711B Nominal Calibration Data Worksheet Table 4-3 : 9711B Optional Calibration Data Worksheet 4-13...

  • Page 6: Introduction

    Guildline Instruments. In addition, systems engineered by Guildline Instruments are warranted to be free of defects in overall system operation for a period of two (2) years from the date of receipt by the original purchaser.

  • Page 7: To Obtain Warranty Or Calibration And Repair Service

    Guildline Instruments will pay for all warranty costs including shipping to and from the original shipment point. However, if the instrument is purchased within one country and shipped to another, Guildline will only pay for shipping to and from the original ship to country or customer point. 1.2.1...

  • Page 8: Returns All Other Countries

    Section 1 1.2.2 Returns All Other Countries For all other countries, including Canada please ship to: Guildline Instruments Limited 21 Gilroy Street, PO Box 99 Smiths Falls, ON K7A 4S9 Mark on the outside of the box: RMA # _____________...

  • Page 9: 9711B Specifications

    Section 2 9711B SPECIFICATIONS Uncertainty Specifications The specifications apply from Full Rate Current down to 10 % of the full rated current. For example the 300 A Range can be used from 300 A down to 30 A or the 100 A Range can be used down to 10 A. Ensure current cables used can handle the full rated current.

  • Page 10: Overview Of The 9711B

    Section 3 OVERVIEW OF THE 9711B General The Model 9711B is a self-contained 9 range, 4 terminal shunt, for precision current measurements up to 300 A. The design optimizes a number of important factors such as the effects of self-heating, temperature coefficient, size, weight, ease of operation and total measuring range.

  • Page 11: Current Input Terminals

    Section 3 3.2.2 Current Input Terminals The following terminals have the following rated currents. Note that all terminals should tighten uniformly when making measurements. Loose connections can cause faulty readings. Common (low) Connector - Used for all common inputs to 300 A and all ranges and ALL range plug settings.

  • Page 12: Potential Terminals

    Section 3 3.2.4 Potential Terminals Potential Terminals are used for DMM or other measurement device inputs to read the mV output produced at this terminal.. Use low thermals leads for best connections. Figure 3-4 : Potential Terminals 3.2.4 10 Ampere Measurements and Below For measurements up to and including 10 A, connect the shunt in series with the power source and the item under test.

  • Page 13: Mv Output

    Section 3 3.2.6 mV Output Each shunt has a 100 mV output with the application of the rated current. In actual measurement, it is this voltage or fraction thereof, which the readout instrument indicates. It s reading in mV is directly proportional to the current applied.

  • Page 14: Additional Applications Of The Model 9711B

    Section 3 Note: Most readout instruments, have a residual error at the low end of their range which may be a significant accuracy factor. Examine the specifications of the milli-voltmeter used to determine what these errors are. For this reason it is good instrumentation practice to use that shunt range which will provide the highest millivolt output for a given current flow.

  • Page 15: Calibration And Performance Verification

    Introduction The following section describes the calibration and performance verification procedures for the 9711B Series of Multi-tap DC Current Shunts. It is recommended that DC Shunt be calibrated at the currents listed in Table 3 for each resistance values. Calibration Overview This calibration procedure covers the entire range of the 9711B Series of Multi-Tap DC Shunts.

  • Page 16: Equipment And Standards Required For Calibration

    Smiths Falls Location. We can provide very good turn-around times with some of the lowest uncertainties available today. 9711B Users may find the use of Guildline Calibration Services an excellent convenience as well as a great alternative to maintaining their own calibration facilities to support these standards.

  • Page 17: Routine Calibration

    Leads can have an impact on overall measurements. Ensure that the leads selected are Metrology Grade leads. While 300 A leads are called out for the 300 A range, Guildline uses 500 A leads for this measurement to avoid temperature affects on measurements. Your measurement may or may not be affected depending on the quality of the leads.

  • Page 18: Table 4-1 : List Of Recommended Test Currents Or Voltages For Resistance Values

    Section 4 Table 4-1 : List of Recommended Test Currents or Voltages For Resistance Values Ampere Range Recommended Foot Comments Input Resistance Test Currents Notes 6623A-300 Range Extender required . 30 Adc 0.333 333 m 100 Adc 1, 4 Calibrate in order (minimum current to maximum 300 Adc current) 6623A Range Extender required...

  • Page 19: Nominal Value Calibration Procedure

    Section 4 Nominal Value Calibration Procedure 4.6.1 Record the UUT Information on Table 4. (b) Allow the 9711B to stabilize at Calibration environment for a 24 hour period. Ensure that the room is properly ventilated to dissipate heat up to 30 W of power for the calibration process. (c) Setup DCC Bridge and Range Extender and other standards used for appropriate measurement (refer to Standards Manuals used).
  • Page 20 Section 4 (e) Repeat for all currents listed for each test point. Always start with lowest current (minimum heat dissipation) and work to highest current. 4.6.4 Calibration of 10 A (10 m ) Range (a) Disconnect the 1 A Current Cables Cable and connect a cable capable of handling 10 A to the 10 A and Input Common Terminals.
  • Page 21 Section 4 (b) Connect the Bridge Rx terminals to the UUT Common and Potential Terminals on the left side (4 to 2 wire connection). (c) Set the two range plugs to the 300 A terminals. (d) Output the first current (starting with lowest current first) for the 300 A and after proper bridge measurement cycle (refer to user manuals for bridge), record the UUT value under MEASURED VALUE on the worksheet.

  • Page 22: Table 4-2 : 9711B Nominal Calibration Data Worksheet

    Section 4 Table 4-2 : 9711B Nominal Calibration Data Worksheet Calibration UUT Serial Number Calibration Date Last Calibration Date Temperature 0.000 01 Ampere Output 12 Month Tolerance: ±100 ppm ALIBRATION Measured Value Lower Value Limit Upper Value Limit URRENT 0.000 1 0.0001 Ampere Output 12 Month Tolerance: ±100 ppm ALIBRATION...
  • Page 23 Section 4 9711B Nominal Calibration Data Worksheet (Continued) Calibration UUT Serial Number Calibration Date Last Calibration Date Temperature 1 Ampere Output 12 Month Tolerance: ±100 ppm ALIBRATION Measured Value Lower Value Limit Upper Value Limit URRENT 10 Ampere Output 12 Month Tolerance: ±100 ppm ALIBRATION Measured Value Lower Value Limit...

  • Page 24: Calibration Of 1 A (100 M ) Range

    Section 4 Optional Calibration Procedure (Drift Verification) 4.7.1 Calibration of 300 A (0.333 333 m ) Range (a) Record the last calibration date and previous values for each range on Table 5. The last calibration date is used to determine if the unit has met 1 year specifications. (b) Allow the 9711B to stabilize at Calibration environment for a 24 hour period.

  • Page 25: Calibration Of 10 A (10 M ) Range

    Section 4 (e) Repeat for all currents listed for each test point. Always start with lowest current (minimum heat dissiapation) and work to highest current. 4.7.3 Calibration of 10 A (10 m ) Range (a) Disconnect the 100 A Red Cable and connect a cable capable of handling 10 A to the 9711B 10 A Terminal and range Extender current output.

  • Page 26: Calibration Of 0.1 A And Below (1 ) Ranges

    Section 4 4.7.5 Calibration of 0.1 A and below (1 ) Ranges (a) Remove the Range Extender cable and connect leads from the 10A to the Bridge directly. (b) Move the two Range Plugs to 0.1 A. Allow the UUT to stablize 10 minutes prior to starting the measurements (c) Output the first current (starting with lowest current) for the 0.1 A and after proper bridge measurement cycle (refer to user manuals for bridge), record the measured value under column...

  • Page 27: Table 4-3 : 9711B Optional Calibration Data Worksheet

    Section 4 Table 4-3 : 9711B Optional Calibration Data Worksheet Calibration UUT Serial Number Calibration Date Last Calibration Date Temperature Nominal Ohmic Value: 0.000 333 333 300 Ampere Output 12 Month Tolerance ±1000 ppm CTUAL AXIMUM ALIBRATION HMIC ALUE HMIC ALUE URRENT ALIBRATION...
  • Page 28 Section 4 9711B Optional Calibration Data Worksheet (Continued) Calibration UUT Serial Number Calibration Date Last Calibration Date Temperature Nominal Ohmic Value: 1 Ampere Output ±100 ppm 12 Month Tolerance CTUAL EVIATION AXIMUM ALIBRATION HMIC ALUE HMIC ALUE URRENT ALIBRATION URRENT ALIBRATION EVIATION Nominal Ohmic Value:...
  • Page 29 Section 4 9711B Optional Calibration Data Worksheet (Continued) Calibration UUT Serial Number Calibration Date Last Calibration Date Temperature Nominal Ohmic Value: 0.001 Ampere Output ±100 ppm 12 Month Tolerance CTUAL AXIMUM ALIBRATION HMIC ALUE HMIC ALUE URRENT ALIBRATION URRENT ALIBRATION EVIATION EVIATION 0.000 1...
  • Page 30 Section 5 MAINTENANCE Maintenance of the resistor consists only of routinely inspecting the unit for physical damage and cleanliness. Cleanliness is especially important on the high value resistors (1 M and greater). These should be cleaned with isopropanol and a soft brush or cloth. Special care should be taken to ensure that the terminal connectors are clean.
  • Page 31 USA and Canada Telephone: (613) 283-3000 USA and Canada Fax: 1-613-283-6082 Outside US and Canada Telephone: +[1] 613 283-3000 Outside US and Canada Fax: [1] +613 283-6082 You can also contact Guildline Instruments Limted via their Email or Websites. Email is: sales@guildline.com Website is: www.guildlinecom...
  • Page 32 Section 5 9711B Spare Parts Listing Part Number: 12294-01-01 Manufacturer: Guildline Instruments Cage Code: 35939 Description: 9711A/9711B Taper Plug Assembly for Range Selection - Precision Machined, Sold in Set (2 Plugs as shown) Dimensions: Weight: (Each Plug) 0.60 oz. (17 g)
  • Page 33 Part Number: 17798.01.02 Manufacturer: Guildline Instruments Cage Code: 35939 Description: Precisiouesn 1 Range Resistor (0.1 A Current Range) Dimensions: ¾...
  • Page 34 Section 5 Part Number: 17798.05.02 Manufacturer: Guildline Instruments Cage Code: 35939 Description: Precision 10 k Range Resistor (0.000 01 A Current Range) ⅞ Dimensions: 5⅜ Weight: 1.23oz, 35g TM9711B-A-00 6 November 2013...

  • Page 35: Figure 5-1 : 9711B Schemtic Overview

    Section 5 300A 100A Figure 5-1 : 9711B Schemtic Overview TM9711B-A-00 6 November 2013...

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