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iii

SAFETY PRECAUTIONS

The following general safety precautions must be observed during all phases of operation, service, 

and repair of this instrument. Failure to comply with these precautions or with speci

fi

 c WARNINGS 

elsewhere in this manual may impair the protection provided by the equipment. Such noncompliance 

would also violate safety standards of design, manufacture, and intended use of the instrument. 

IET Labs assumes no liability for the customer’s failure to comply with these precautions.

This is an indoor use product.

DANGEROUS PROCEDURE WARNINGS

Comply with all WARNINGS - Procedures throughout in this manual and instructions on the 

instrument prevent you from potential hazard. These instructions contained in the warnings must 

be followed.

BEFORE APPLYING POWER

Verify that all safety precautions are taken. Make all connections to the instrument before applying 

power. Note the instrument’s external markings described under “Safety Symbols”.

     • DO NOT Operate in an Explosive Atmosphere

     • Do not operate the instrument in the presence of in

fl

 ammable gasses or fumes 

     • Operation of any electrical instrument in such an environment clearly constitutes a safety  

hazard

     • Use Caution around live circuits and whenever hazardous voltages > 45 V are present

     • Operators must not remove instrument covers 

     • Component replacement and internal adjustments must be made by quali

fi

 ed maintenance 

personnel only 

     • DO NOT substitute parts or modify the instrument

      • When working with high voltages; post warning signs, train personnel and keep unauthorized 

personnel away.

To avoid the danger of introducing additional hazards, do not install substitute parts or perform 

unauthorized modi

fi

 cations to the instrument.  

Return the instrument to an IET Labs for service and repair to ensure that safety features are maintained 

in operational condition.

Содержание SRac Series

Страница 1: ...ENT Email info ietlabs com TEL 516 334 5959 FAX 516 334 5988 www ietlabs com IET LABS INC SRac Series Resistance Standard User and Service Manual Copyright 2019 IET Labs Inc Visit www ietlabs com for...

Страница 2: ...PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT Email info ietlabs com TEL 516 334 5959 FAX 516 334 5988 www ietlabs com IET LABS INC...

Страница 3: ...t no charge when returned to IET Changes in this product not approved by IET or application of voltages or currents greater than those allowed by the specifications shall void this warranty IET shall...

Страница 4: ...2002 96 EC This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indicates that you must not discard this electrical electronic product in domestic household...

Страница 5: ...taken Make all connections to the instrument before applying power Note the instrument s external markings described under Safety Symbols DO NOT Operate in an Explosive Atmosphere Do not operate the...

Страница 6: ...USED TAKE ALL MEASURES TO AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE CONDUCTORS WHEN USING THIS INSTRUMENT Use extreme caution when working...

Страница 7: ...d 100 M 6 3 2 3 Connections for values 100 M 7 3 3 Thermal emf Considerations 7 3 4 Environmental Conditions 7 3 4 1 Operating Temperature 7 3 4 2 Storage Temperature 7 3 5 Shipping and Handling 7 Cha...

Страница 8: ...e 1 1 SRac Series Resistance Standard 1 Table 2 1 SRac Specifications 2 Figure 2 1 Sample label affixed to unit 3 Figure 3 1 Connections for values 6 Table 4 1 Replaceable Parts List 9 Figure 4 1 SRac...

Страница 9: ...ange of 18 C to 28 C Because of the low temperature coefficient they require no oil or temperature bath The SRac series units are available in values ranging from 1 m to 10 M with custom values availa...

Страница 10: ...esistance PCR of 5ppm at rated power due to internal heating Foil resistors have a voltage coefficient VC of 3ppm V SPECIFICATIONS Calibration conditions At 23 C low power traceable to SI units Connec...

Страница 11: ...3 SRX SRC Series 3 Specifications...

Страница 12: ...e 20 ppm year 0 25 W 10 ppm C 0 5 ppm mW 15 C to 30 C 0 C to 40 C REPORT 82893 Tech 21 Oct 2015 Date CTS 23 5 Temp C Due Cert No 2073 01 Calibrated Resistance R 999 996 48 m Meas Uncertainty 9 6 ppm L...

Страница 13: ...ohmmeter CURRENT LO Current return to source e g ohmmeter SENSE HI Measurement point for a four wire ohmmeter SENSE LO Measurement point for a four wire ohmmeter GND Guard or shield Table 3 1 Connect...

Страница 14: ...ues and ac values at 1 kHz This also makes calibration easy as the SRac can be calibrated at dc rather than ac For resistance values below 1 M it is recommended to use the dc value for the ac value at...

Страница 15: ...one de vice the following should be observed Calibration Interval General Considerations Required Equipment Calibration Procedure 4 3 1 Calibration Interval The recommended SRac Series calibration int...

Страница 16: ...International Model 6010C ESI model 242 242A 242C or 242D Ahigh precision high stability digi tal multimeter e g Fluke 8508A along with a set of resistance stan dards for ratio mode 4 3 4 Calibration...

Страница 17: ......

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