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Summary of Contents for Simpson 260-8XI
- Page 1 Simpson 260 ® Series 8XI Volt-Ohm-Milliammeters Instruction Manual...
- Page 2 SIMPSON ELECTRIC COMPANY neither assumes nor autho- rizes any other persons to assume for it any other liability in connection with the sales of its products.
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Page 3: Table Of Contents
Contents INTRODUCTION ................5 General Description ................ 5 Overload Protection ................ 5 Internal Batteries ................5 Printed Circuit ................. 6 Case ....................6 Adjust-A-Vue Handle ..............6 Test Leads ..................6 Technical Data ................6 / 7 Definition of Accuracy ..............8 1.10 Safety Considerations .............. - Page 4 Contents, Continued OPERATOR SERVICING .............. 26 Battery and Fuse Replacement ............26 Fuse Protection ................27 Care ....................28...
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Page 5: Introduction
INTRODUCTION General Description The Simpson Volt-Ohm-Milliammeter 260 Series 8XI, (hereafter referred to as the 260 or as the Instrument) is a 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. -
Page 6: Printed Circuit
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. Case The case has an externally accessible battery and fuse compartment. Access to the batteries and 1 amp fuse is obtained by unscrewing a single screw on the back of the case and sliding out the compartment cover. - Page 7 DC MILLIAMPERES: Ranges: 0-1-10-100-500 mA Voltage Drop (Approx.): 250 mV, 255 mV, 300 mV, 500 mV DC AMPERES: Range: 0-10A Voltage Drop (Approx.): 255 mV NOTE: The 10A range is not internally fused. μ *ACCURACY: DC Voltage Ranges: 2% of Full Scale DC Current: 0-50 μA Range: 1.5% of Full Scale...
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Page 8: Definition Of Accuracy
15. WEIGHT: 2 1/2 lbs. (0.9331 kg) 16. ***RATED-CIRCUIT- TO-GROUND VOLTAGE: 1000 V AC/DC Max. * Accuracies specified are for the 260 in a horizontal position. ** Responds to the average value of an AC current, and is calibrated to indicate the RMS value of a pure sine wave. -
Page 9: Additional Accessories
Model 150-2 Amp-Clamp ................. 00541 1.13.1 Amp-Clamp Model 150-2 The Simpson Amp-Clamp Model 150-2 allows AC current measurements with- out breaking the circuit under test. The Amp-Clamp works as a transformer con- taining a split core for accommodating the conductor which carries the current being measured. -
Page 10: Installation
(See Section 5 for instructions on how to install the batteries.) Warranty The Simpson Electric Company warranty policy is printed on the inside front cover of this manual. Read carefully before requesting warranty repairs. For all assistance, contact the nearest Authorized Service Center or the factory directly. -
Page 11: Controls, Jacks And Indicators
CONTROLS, JACKS AND INDICATORS Front Panel Description All operating and adjustment controls, jacks, and indicators for the Instrument are illustrated in this section along with a list (Table 3-1) describing their function. Become familiar with each item before operating the Instrument. Table 3-1. -
Page 12: Operation
Zero Ohms: This control is used to compensate for variations in the voltage of the internal batteries when making resistance measurements. Circuit Jacks: There are seven jacks on the front panel marked with the functions they represent (Figure 3-1). These jacks provide the electrical connections to the test leads. -
Page 13: Safety Precautions
cific warnings and instructions and observe them as well as those contained herein. The Instrument should only be used by personnel qualified to recognize shock hazards and who are trained in the safety precautions required to avoid possible injury. Do not connect any terminal of this Instrument to a circuit point at which a voltage exceeding 1000V AC or DC may exist with respect to earth ground. -
Page 14: Polarity Reversing
Polarity Reversing The function switch provides a convenient means to reverse polarity of the inter- nal battery to facilitate testing semiconductor devices. The +DC and -DC posi- tions transpose internal connections to the COMMON and +jacks and therefore can also be used to reverse polarity of external voltages and currents connected to these jacks (only). -
Page 15: Dc Voltage Measurement 0-2.5 Through 0.250V Range
4.6.2 DC Voltage Measurement 0-2.5 Through 0.250V Range Set the function switch at +DC (Figure 4-1). Plug the black test lead into the -COMMON jack and the red test lead into the +jack. Set the range switch at one of the five voltage range positions marked 2.5V, 10V, 25V, 50V, or 250V. -
Page 16: Dc Voltage Measurement 0-1000V Range
Turn on power in circuit being measured. Read the voltage using the 0-50 figures on the black scale marked DC. Multiply the reading by 10. Turn off power to the circuit and wait until the meter indicates zero before disconnecting the test leads. -
Page 17: Ac Voltage Measurement
AC Voltage Measurement Branch and distribution circuits (120/240/480V etc.) can de- AC VOLTAGE RANGES 2.5 VAC RANGE liver dangerous explosive 10VAC RANGE power momentarily into a short 50 VAC RANGE 250 VAC RANGE circuit before the fuse/breaker 500 VAC RANGE opens the circuit. -
Page 18: Ac Voltage Measurement 0-500V Range
the lower range to obtain a more accurate reading.) Plug the black test lead into the -COMMON jack and the red test lead into the +jack. Turn off power to the circuit being measured and discharge all capacitors. Connect the test leads across the circuit voltage to be measured with the black lead to the grounded side. -
Page 19: Ac Voltage Measurement 0-1000 Range
4.7.3 AC Voltage Measurement 0-1000 Range Use extreme care when working in high voltage circuits. Do not handle the Instru- ment or test leads while the circuit being measured is energized. OBSERVE ALL SAFETY PRECAUTIONS in paragraph 4.2 and in the instruction manual for the equipment being tested. -
Page 20: Decibel Measurement (-20 To +50 Db)
Before proceeding with the following steps, review the Safety Precautions in Para graph 4.2. OUTPUT RANGES 2.5 VAC RANGE 10VAC RANGE 25/50 VAC RANGE 250 VAC RANGE Figure 4-8. Frequency Response Output Ranges 10Hz 100Hz 1KHz 100KHz 10KHz 1MHz FREQUENCY Set the function switch at AC Volts Only position (Figure 4-9). -
Page 21: Direct Current Measurement
Refer to Figure 4-10 for switch settings and jack connections Use operating instructions for AC VOLTAGE MEASUREMENT, 0-2.5V/10/ 25V/50V/250V RANGES (Paragraph 4.10). NOTE: Do not use the 500V or 1000V ranges for decibel readings. Read decibels on the bottom scale marked dB. For the 10V/25V/50V/250V ranges, add the appropriate factor from the chart below: l t c NOTE: The maximum voltage ratio that can be measured is +50 dB on the 0-250V... -
Page 22: Direct Current Measurement 0-50Μa Range
switch settings, or disconnecting the leads. Never exceed the circuit-to-ground voltage of the instrument (1000V Max,, Table 1-1. Item 16). Always connect the instrument in series with the ground side of the circuit. In all direct current measurements, make certain the power to the circuit being tested has been turned off before connecting and disconnecting test leads or restoring circuit continuity. -
Page 23: Direct Current Measurement 0-10A Range
This range is only intended for measurements in low voltage circuits (under 25V DC) such as the primary power in vehicles or their accessories. 4.9.3 Direct Current Measurement 0-10A Range Plug the black test lead into the -10A jack and the red test lead into the +10A jack. -
Page 24: Measuring Resistance
Rotate the ZERO OHMS control until pointer indicates zero ohms. If pointer cannot be adjusted to zero, one or both of the batteries must be replaced. (For battery replacement, refer to Section 5.) Disconnect shorted test leads. 4.11 Measuring Resistance Figure 4-12. -
Page 25: Continuity Tests
tance measurements) consider the following before making measurement: The polarity of the battery voltage will be as marked at the jacks when the switch is in the +DC position and reversed in the -DC position. Ensure that the range selected will not damage the semiconductor. (Refer to Table 1-1, item 8, and review the specification limits of the semiconductor according to the manufacturer’s ratings.) If the semiconductor is a silicon diode or conventional silicon transistor, no... -
Page 26: Battery And Fuse Replacement
OPERATOR SERVICING This Instrument has been carefully designed and constructed with high-quality components. By providing reasonable care and following the instructions in this manual, the user can expect a long service life of the Instrument. Prior to opening the battery compartment cover, disconnect the test leads from live circuits. -
Page 27: Fuse Protection
Fuse Protection A 1 Amp 250V quick-acting fuse and a 2A high voltage, high interruption capac- ity fuse is connected in series with the input circuit as additional protection to the VOM against excessive energy fault current, such as a power line overload. It is important to replace the 1 Amp fuse with a Littlefuse Type 312001 only to prevent the 2 Amp high interruption capacity fuse from opening on a nominally high overload. - Page 28 SIMPSON ELECTRIC COMPANY 520 Simpson Avenue Lac du Flambeau, WI 54538-0099 (715) 588-3311 FAX (715) 588-3326 Printed in U.S.A. Part No. 06-115021 Edition 8, 06/17 Visit us on the web at: www.simpsonelectric.com...
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