Guildline 9211B Series Manual de usuario

Model 9211B 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.

TM9211B-A-00

6 November 2013

TM9211B-A-00

6 November 2013

Table of Contents

1.0 Introduction 1-1

1.1 Warranty 1-1

1.2 To ObtainWarrantyorCalibrationandRepairService 1-2

1.2.1 USAWarrantyReturnAddress 1-2

1.2.2 ReturnsAllOtherCountries 1-3

1.3 SafetyInformation 1-3

2.0 9211BSpecifications 2-1

2.1 UncertaintySpecifications 2-1

2.2 GeneralSpecifications 2-1

3.0 Overviewofthe9211B 3-1

3.1 General 3-1

3.2 OperatingInstructions 3-1

3.2.1 MaximumCurrent 3-1

3.2.2 CurrentInputTerminals 3-2

3.2.3 RangeSelectorPlugs 3-2

3.2.4 PotentialTerminals 3-3

3.2.4 10AmpereMeasurementsandBelow 3-3

3.2.5 Measurements above10Ampere 3-3

3.2.6 mVOutput 3-4

3.2.7 FullRatedAccuracy 3-4

3.2.8 Minimumaccuracy 3-4

3.3 AdditionalApplicationsoftheModel9211B 3-5

4.0 Calibrationand PerformanceVerification 4-1

4.1 Introduction 4-1

4.2 CalibrationOverview 4-1

4.3 CalibrationIntervalandPerformance 4-1

4.4 EquipmentandStandardsRequiredforCalibration 4-2

4.5 RoutineCalibration 4-3

4.6 NominalValueCalibrationProcedure 4-5

4.6.2 Calibrationof0.01mA(10k )Rangesto1A(0.1 Ranges) 4-5

4.6.3 Calibrationof1 A (100m )Range 4-5

4.6.4 Calibrationof10 A (10m )Range 4-6

4.6.5 Calibrationof100A(1m )Range 4-6

4.6.6 Calibrationof300A(0.333333m )Range 4-6

4.7 OptionalCalibrationProcedure(DriftVerification) 4-10

4.7.1 Calibrationof300A(0.333333m )Range 4-10

4.7.2 Calibrationof100A(1m )Range 4-10

4.7.3 Calibrationof10 A (10m )Range 4-11

4.7.4 Calibrationof1 A (100m )Range 4-11

4.7.5 Calibrationof0.1A andbelow(1 )Ranges 4-12

TM9211B-A-00

6 November 2013

5.0 Maintenance 5-1

5.1 Maintenance,InspectionandCleaning 5-1

5.1.1 Inspection 5-1

5.1.2 Cleaning 5-1

5.2 Troubleshooting 5-1

5.2.2 ShortCircuitTroubleshooting 5-2

5.3 ReplaceableParts 5-2

TM9211B-A-00

6 November 2013

iii

LIST OF FIGURES

Figure3-1:9211BCurrentTerminalConnections 3-1

Figure3-2:9211BCurrentTerminalConnections 3-2

Figure3-3:RangeSelectorPlugs 3-2

Figure3-4:PotentialTerminals 3-3

Figure5-1:9211BSchemticOverview 5-6

LIST OF TABLES

Table4-1:ListofRecommendedTestCurrentsorVoltagesForResistance Values 4-4

Table4-2: 9211BNominalCalibrationDataWorksheet 4-8

Table4-3: 9211BOptionalCalibrationDataWorksheet 4-13

Section 1

TM9211B-A-00

6 November 2013

1-1

1.0 INTRODUCTION

This manual provides an overview of the 9211B DC Multi-Tap Current Shunt and also contains the

necessary information required to perform a calibration or verification test. General product

information,productdescriptionandperformancespecificationsarealsoincluded.

The phone number in the USA and Canada to obtain Product Support, Calibration Service or

ReplacmentPartsis(800)310-8104.

TocontactGuildlineInstruments,thefollowinginformationisprovided.

USAandCanadaTelephone: (613)283-3000

USAandCanadaFax:1-613-283-6082

OutsideUSandCanadaTelephone: +[0][1]613283-3000

OutsideUSandCanadaFax: +[0][1]613283-6082

YoucanalsocontactGuildlineInstrumentsLimtedviatheirEmail orWebsites.

Emailis: sales@guildline.com

Websiteis: www.guildline.com

1.1 Warranty

Guildline Instruments warrants its products to be free of defects in manufacture and normal

operation for a period of two (2) years from the date of purchase, except as otherwise specified. This

warranty applies only in the country of original purchase and only to the original purchaser, who is

also the end user. Equipment, which is defective or fails within the warranty period, will be repaired

orreplacedatourfactorywithoutchargeatthediscretionofGuildlineInstruments.

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.

Third party system components purchased by Guildline carry the warranty of the original equipment

manufacturer and will be accepted for claim by Guildline Instruments at our factory only after

warrantyauthorizationbytheoriginalmanufacturer.

Section 1

TM9211B-A-00

6 November 2013

1-2

LimitationofWarranty

Warranty coverage does not apply to equipment which has failed due to misuse, neglect, accident or

abnormal conditions of operation or if modifications or repairs have been made without prior

authorizationofGuildlineinstruments.

Temperatureprobesarenotwarrantedagainst failureduetomechanicalshock.

Fuses,lampsandnon-rechargeablebatteriesarenotwarrantedagainstbreakage.

DamageinShipmenttoOriginalPurchase

Instrument(s) should be thoroughly inspected immediately on receipt for visible damage. Any

damage should be reported to the carrier and further inspection and operational tests should be

carried out if appropriate to determine if there is internal damage. Contact Guildline Instruments

beforereturningforrepair. The customerorpurchasermustcomplete allfinalclaimswiththecarrier.

Regular charges will apply to non-warranty service. External service charges and expenses will be

billedatcostplushandling.

1.2 To Obtain Warranty or Calibration and Repair Service

Returns and/or Calibration and Repair Service Requests. Telephone, Fax and email addresses to

contactGuildlineareprovidedpreviously.

Guildline Instruments will pay for all warranty costs including shipping to and from the original

shipmentpoint. However,if the instrumentis purchased within one country and shipped to another,

Guildlinewillonlypay forshipping toand fromtheoriginalshiptocountryor customerpoint.

1.2.1 USA Warranty Return Address

USA Customers should use the following address to return instruments for warranty service or

calibrationsupport.

Guildline Instruments Limited

C/O AN Deringer

800 Proctor Avenue

Ogdensburg, NY 13669

Mark on the outside of the box:

RMA # _____________

Model#_____________

Serial#_____________

Section 1

TM9211B-A-00

6 November 2013

1-3

1.2.2 Returns All Other Countries

Forallothercountries,includingCanadapleaseshipto:

Guildline Instruments Limited

21 Gilroy Street, PO Box 99

Smiths Falls, ON K7A 4S9

Mark on the outside of the box:

RMA # _____________

Model#_____________

Serial#_____________

1.3 SafetyInformation

WARNING: During usage and calibration high voltages or high currents may be

present. Use caution when working above 40 Volts DC or currents above 1mA. Such

voltagesorcurrentscancausedeath.

The 9211B DC Shunts are designed to work within operating specifications. Applying more than the

recommendedcurrentwilldamagetheunit.

Inspect the 9211B for damage such as cracked connectors prior to use. If the unithasa burned smell

orsmokeisvisibleduringuse,discontinueuse immediately.

If testequipmentusedwith DC Shunts overloads or trips, this couldbe a sign that the 9211B requires

repair.

Inspect all test leads used with the Multi-Tap DC Current Shunt for damaged insulation or exposed

metal. Checkalltestleadsforcontinuity.

Ensurealltestleadsare correctlyconnectedpriortoapplyingcurrentorvoltage.

DonotuseMulti-tapDCCurrentShuntsaroundexplosivegas,vaporor dust.

Section 2

TM9211B-A-00

6 November 2013

2-1

2.0 9211B SPECIFICATIONS

2.1 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.

Ensurecurrentcablesused canhandlethefullrated current.

Resistance

( )

FullRated

CurrentRange

(A)

1YearAccuracy1,2

(%)

Temperature

Coefficient

( /0C)

PowerDissipation

atRatedCurrent

(mW)

10,000

0.0001

±0.01

0.001

1,000

0.0001

±0.01

0.01

100

0.001

±0.01

0.1

0.01

±0.01

0.1

±0.01

0.1

±0.01

100

0.01

±0.01

1000

0.001

100

±0.05

10W

0.000333 333

300

±0.1

30W

Note1: Calibrated in air at 23 ± 1 oC referred to the unit of resistance as maintained by a National Metrology Institute, and expressed as a

deviationfromnominalwithatotaluncertaintyandcoveragefactorofk=2.

Note2: A traceable report of calibration stating the measured values and uncertainty is provided with each unit at test currents of 1/10 of

ratedcurrentandfullratedcurrenttoamaximumof100Aandaminimum of0.1mA,

2.2 General Specifications

GENERALSPECIFICATIONS

Environmental

Temperature

Humidity

Operating

5oCto38oC

40oFto100oF

<70% RHnon-condensing

Storage

-20oCto55oC

-40oF to131oF

<90% RHnon-condensing

ExteriorDimension(Rack

Mount)

222mm(H)

482mm(W)

183mm(D)

13.6kg

8.7" (H)

19"(W)

7.2" (D)

30 lbs

Section 3

TM9211B-A-00

6 November 2013

3-1

3.0 OVERVIEW OFTHE 9211B

3.1 General

The Model 9211B 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,

temperaturecoefficient,size,weight,easeofoperationandtotalmeasuringrange.

It provides wide range precise current measuring capability when used with a potentiometer or

digitalvoltmeterasareadout.

The shunt resistors are mounted in air to minimize size and weight, yet self heating is a negligible

source of error from 20 oC to 30 oC. Self-heating has only a small effect for a still wider range of

ambient temperatures. The resistors are made of selected zeranin wire and are non-inductively

wound, up to 1 ampere. The unit consists of nine (9) shunts, of the 4-terminal configuration. Each

shuntprovidesa 100 mVdrop at thenominal rated current. The maximum current rating is 140 % of

nominalforallrangesexceptthe100A and300Aranges,forwhichthemaximum is

110% of thenominalcurrentrating.

Figure3-1:9211B CurrentTerminalConnections

3.2 Operating Instructions

3.2.1 Maximum Current

Determine the maximum current that will be measured. If maximum current to be measured is

unknown, good instrumentation practice wouldbe to approximate it at a value thatis certain not to

beexceeded.

As an example, if the current is thought to be between 100 A and 120 A, then the connections

shouldmemadetothe300A terminalsforthemeasurement.

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