12391 NIST CAL CERT Simpson, 12391 NIST CAL CERT Datasheet

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... Simpson 260 Series 8P Volt-Ohm-Milliammeters INSTRUCTION MANUAL ...

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... This warranty shall not apply to any instrument or other article of equipment which shall have been repaired or altered outside the SIMPSON ELECTRIC COMPANY factory or authorized service centers, nor which has been subject to misuse, neg- ligence or accident, incorrect wiring by others, or installation or use not in accord with instructions furnished by the manufacturer ...

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NOTES: 3 ...

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INTRODUCTION ............................................................................... 6 1.1 General Description ........................................................................... 6 1.2 Overload Protection ............................................................................ 6 1.3 Internal Batteries ................................................................................ 7 1.4 Overload Circuit Test .......................................................................... 7 1.5 Printed Circuit ..................................................................................... 8 1.6 Phenolic Case .................................................................................... 8 1.7 Adjust-A-Vue Handle .......................................................................... 8 ...

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Battery Replacement ........................................................................ 27 5.3 Fuse Replacement ........................................................................... 27 5.4 Test Lead Inspection ........................................................................ 28 5.5 Care .................................................................................................. 28 5 ...

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... INTRODUCTION 1.1 General Description The Simpson Volt-Ohm-Milliammeter 260 Series 8P, (hereafter referred to as the 260 or as the Instrument rugged, accurate, compact, easy-to-use Instrument equipped with mirrored dial to eliminate parallax. The Instrument can be used to make accurate measurements of AC and DC voltage, direct current, resistance, decibels, and Output Voltage ...

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Some overload conditions may cause the fuses to burn out as well as open the relay contacts. d. When an overload of sufficient magnitude is applied to the VOM, the reset button will “pop-up” approximately 3/16" above the surface ...

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Printed Circuit Most of the component parts are mounted on a printed circuit board which simpli- fies assembly and maintenance, thus, extending the useful life of the Instrument. 1.6 Phenolic Case The phenolic case is designed with heavy reinforced ...

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DC MICROAMPERES: Range: 0-50µA Voltage Drop MILLIAMPERES: Ranges: 0-1-10-100-500 mA Voltage Drop (Approx.): 250 mV, 255 mV, 300 mV, 500 AMPERES: Range: 0-10A Voltage Drop (Approx.): 255mV NOTE: The 10A range is not internally ...

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AC current, and is calibrated to indicate the RMS value of a pure sine wave. ***Per ANSI C39.5 April 1974: “The specified voltage ...

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... The 10,000 volts AC accessory probe is similar to the high voltage DC probes with the following exceptions: The AC high voltage probe is designed to extend the 260-8P AC voltage range. The probe can be used with the Simpson 260-8P 10-volt AC range. NOTE: Instructions are furnished with each high voltage probe. ...

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... Instrument is cali- brated in this position. 3. CONTROLS, JACKS, AND INDICATORS All operating and adjustment controls, jacks, and indicators for the Simpson 260- 8P are illustrated in this section along with a list (Table 3-1) describing their function. Become familiar with each item before operating the Instrument. ...

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A. OUTPUT 350 VDC A.C. VOLTS MAX. ONLY - D. D.C. COMMON + - 5 FIGURE 3-1. Front Panel Controls, Jacks and Indicators 3. Function Switch: The function switch has four positions: Audio “*”, +DC, - ...

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This procedure will avoid disturbances to the zero ...

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Do not work alone on high voltage circuits. Make certain that someone ca- pable of giving aid is nearby and alert not handle the Instrument, its test leads, or the circuitry while high voltage is being applied. ...

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Test Leads Test leads are provided with accessory screw-on alligator clips which may be attached to the probe tips. Eliminating the need to hand-hold test prods to a circuit for extended periods, the test clips also reduce hand proximity ...

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DC Voltage Measurement 0-2.5 Through 0-250V Range a. Set the function switch at +DC (Figure 4-2). b. Plug the black test lead into the -COM- MON jack and the red test lead into the + jack. c. Set the ...

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Connect the black test lead to the negative side of the circuit being measured and the red test lead to the positive side of the circuit. e. Turn on power in circuit being measured. f. Read the voltage using ...

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RMS value of the measured voltage. Thus an error may be introduced if the 260 is used to measure a nonsinusoidal waveform. Also, accuracy is lessened ...

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AC Voltage Measurement 0-500V Range Do not attempt any voltage measurement which may exceed 1000 volts or the circuit-to-ground voltage of the Instrument, 1000 volts maximum. Be sure that the range switch is set to the 250V/500V/1000V range, function ...

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Be sure that the range switch is set to the 250V/500V/1000V range, function switch to AC position, and test leads connected to common and 1000V jack. Do not touch the Instrument or test leads while the power ...

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OUTPUT 350 VDC 500 MA. A.C. VOLTS MAX. ONLY 2 1V AMPS. 250 V. 500 V. I000 V. COMMON 260 - ALL TERMINALS 1 V MAX Figure 4-10. Jacks and Switch Positions for ...

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NOTE: The maximum voltage ratio that can be measured is + the 0-250V range measurements are being made to a 0.006 watt into 500 ohm reference level, subtract +7 dB from the reading obtained on ...

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Open the grounded side of the circuit in which the current is being measured. Connect the VOM in series with the circuit. Connect the red test lead to the positive side and the black test lead to the negative ...

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Resistance Measurements Voltage applied to a resistance range will cause reading errors if low and dam- age the Instrument if high. When making in-circuit measurements, make certain that the circuit is completely de-energized before making connections to it. When ...

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Rotate the function switch between the two DC positions to reverse polarity. This will determine if there is a difference between the resistance in the two directions. To check a semiconductor in or out of a circuit (forward and reverse ...

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OPERATOR MAINTENANCE The following paragraphs of this section describe battery replacement, fuse re- placement, and preventive maintenance procedures for the 260. 5.1 Inspection The user is protected from electrical shock by the insulation of the 260 and its test ...

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Test Lead Inspection Periodic inspection of the test leads is recommended to detect cuts, burned areas, dete- rioration or other damage that could reduce the insulation strength of leads. 5.5 Care a. Immediately clean all spilled materials from the ...

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... SIMPSON ELECTRIC COMPANY 853 Dundee Avenue Elgin, IL 60120-3090 (847) 697-2260 FAX (847) 697-2272 Printed in U.S.A. Part No. 06-114339 Edition 8, 12/01 Visit us on the web at: www.simpsonelectric.com 32 ...