Radio Shack 22-218 Owner'S Manual Download Page 1

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Cat. No.

22-218

OWNER’S MANUAL

Please read before using this equipment.

8-Range Multitester

22-218.fm Page 1 Friday, August 6, 1999 11:44 AM

Summary of Contents for 22-218

Page 1: ...Cat No 22 218 OWNER S MANUAL Please read before using this equipment 8 Range Multitester 22 218 fm Page 1 Friday August 6 1999 11 44 AM ...

Page 2: ...ocket meter accurately measures AC and DC voltages DC current and resistance It also passes the critical safety test required by Underwriters Laboratories for test equipment and its 2000 ohm volt sensi tivity ensures an accurate reading 1995 Tandy Corporation All Rights Reserved Radio Shack is a registered trademark used by Tandy Corporation 22 218 fm Page 2 Friday August 6 1999 11 44 AM ...

Page 3: ... are not familiar with meters and testing proce dures we suggest that you read a book about the sub ject such as Using Your Meter Radio Shack Cat No 62 2039 Note You need one AA battery not supplied to power your multitester 22 218 fm Page 3 Friday August 6 1999 11 44 AM ...

Page 4: ...operation depends on you the operator We recommend that you follow these simple safety rules Never apply voltages to the meter that exceed the limits given in the specifications Never apply more than 1000V DC or AC between any input terminals or between an input terminal and ground 22 218 fm Page 4 Friday August 6 1999 11 44 AM ...

Page 5: ...volt age points Never connect the test probes to a source of voltage when you select the Rx1K W or 150mA DC function Always discharge filter capacitors in the power supply of the circuit under test before you attach test probes Always turn off power and disconnect the test leads before you replace the batteries 22 218 fm Page 5 Friday August 6 1999 11 44 AM ...

Page 6: ...he floor underneath it are made of non conductive materials The multitester is fully calibrated and tested Under normal use no further adjustment should be necessary If the meter should require repair do not try to adjust it yourself Take it to your nearest Radio Shack store Service by unauthorized per sonnel voids the warranty 22 218 fm Page 6 Friday August 6 1999 11 44 AM ...

Page 7: ...H FOLLOW ALL SAFEGUARDS SUG GESTED IN THE OWNER S MANUAL IN ADDITION TO NORMAL SAFETY PRECAUTIONS IN DEALING WITH ELECTRICAL CIRCUITS DO NOT USE THIS DEVICE IF YOU ARE UNFAMILIAR WITH ELECTRICAL CIRCUITS AND TESTING PROCEDURES NOT FOR COMMERCIAL OR INDUSTRIAL USE 22 218 fm Page 7 Friday August 6 1999 11 44 AM ...

Page 8: ...oltage 15V 150V 1000V DC Voltage 15V 150V 1000V DC Current 150 mA Resistance 100K ohm Center 3 5K ohm Accuracy DC 3 of Full Scale AC 4 of Full Scale Resistance 3 at Full Scale Length 22 218 fm Page 8 Friday August 6 1999 11 44 AM ...

Page 9: ...tage 2000 ohm Volt Operating Temperature 32 109 4 F 0 43 C Storage Temperature 4 140 F 20 60 C Power Requirements 1 5 Volts Dimensions 37 8 21 2 11 4 Inches 98 64 32 mm HWD Weight Approx 3 7 oz 105 g 22 218 fm Page 9 Friday August 6 1999 11 44 AM ...

Page 10: ...limitations and important safety precautions Follow the operating instructions given in this owner s manual To avoid electric shock or damage to the meter do not connect the ground terminal to any source of more than 500 volts with respect to earth ground 500V MAX 22 218 fm Page 10 Friday August 6 1999 11 44 AM ...

Page 11: ...11 Be extra careful when you take measurements for high voltage Do not touch the meter s test probe ends 22 218 fm Page 11 Friday August 6 1999 11 44 AM ...

Page 12: ...line battery such as Radio Shack Cat No 23 552 557 WARNINGS TO AVOID ELECTRIC SHOCK DISCONNECT BOTH TEST LEADS FROM ANY EQUIPMENT BEFORE YOU REMOVE THE BATTERY DO NOT OPERATE THE METER UNTIL YOU REPLACE THE BATTERY AND CLOSE THE BACK COVER 22 218 fm Page 12 Friday August 6 1999 11 44 AM ...

Page 13: ...tery 1 Set the function selector to OFF and remove the test leads from all test circuits 2 Use a Phillips screwdriver to remove the screw on the back of the meter 3 Remove the back of the meter 22 218 fm Page 13 Friday August 6 1999 11 44 AM ...

Page 14: ...e correct polarity and 5 Replace the back and secure it with the screw Note If you cannot adjust the pointer to 0 on the scale when you measure resistance see Measuring Resistance it is time to replace the battery 22 218 fm Page 14 Friday August 6 1999 11 44 AM ...

Page 15: ...by a 315 mA fuse WARNINGS TO AVOID ELECTRIC SHOCK DISCONNECT BOTH TEST LEADS FROM ANY EQUIPMENT BEFORE YOU REMOVE THE FUSE DO NOT OPERATE THE METER UNTIL YOU REPLACE THE FUSE AND CLOSE THE BACK COVER 22 218 fm Page 15 Friday August 6 1999 11 44 AM ...

Page 16: ...ONTINUED PROTECTION AGAINST FIRE OR OTHER HAZARD REPLACE THE FUSE ONLY WITH A 315 mA 250 V 5 X 20 MM MINIATURE FUSE CAT NO 270 1046 Follow these steps to replace the fuse 22 218 fm Page 16 Friday August 6 1999 11 44 AM ...

Page 17: ... from all test circuits 2 Use a Phillips screwdriver to remove the screw on the back of the meter 3 Remove the back of the meter 4 Replace the blown fuse with a new one 5 Replace the back and secure it with the screw 22 218 fm Page 17 Friday August 6 1999 11 44 AM ...

Page 18: ...s that are supplied with your meter These test leads are rated for 1000 volts Replacements are available at your local Radio Shack store When the meter is not in use always leave the function selector set to OFF 22 218 fm Page 18 Friday August 6 1999 11 44 AM ...

Page 19: ...ter s rat ing Use extreme care when you use these high voltage ranges Never connect the probe you plug into the negative terminal to a source of voltage more than 500 V Doing so can create a serious shock hazard 22 218 fm Page 19 Friday August 6 1999 11 44 AM ...

Page 20: ...ure should be be tween 43 F and 74 F 6 C and 23 C with an 80 maximum relative humidity Keep the meter lying flat on a non metallic surface Also use a range setting that results in a reading in the upper third of the meter scale 22 218 fm Page 20 Friday August 6 1999 11 44 AM ...

Page 21: ...21 For exact readings look at the scale from the point where the pointer and its reflection in the mirror come together 22 218 fm Page 21 Friday August 6 1999 11 44 AM ...

Page 22: ...scale adjust the plastic screw in the center of the tester face to bring the pointer to zero MEASURING VOLTAGE WARNING IF YOU ATTEMPT TO MEASURE A VOLTAGE GREATER THAN 1000 VOLTS DC OR AC YOU MIGHT DAMAGE YOUR METER AND EXPOSE YOURSELF TO A SEVERE SHOCK HAZARD 22 218 fm Page 22 Friday August 6 1999 11 44 AM ...

Page 23: ...th probes at once Clamp one of the probes to the circuit s neutral or ground lead using a Radio Shack insu lated slip on alligator clip Cat No 270 354 Then probe for voltages with the other probe This helps prevent you from ac cidentally touching a hot wire 22 218 fm Page 23 Friday August 6 1999 11 44 AM ...

Page 24: ... wire is usually red black or blue In DC wiring circuits the ground lead is usually a black lead the hot wire is usually red WARNING NEVER CLAMP ONTO A HOT WIRE IF YOU CLAMP TO A HOT WIRE AND TOUCH THE OTHER PROBE YOU COULD RECEIVE AN ELECTRIC SHOCK 22 218 fm Page 24 Friday August 6 1999 11 44 AM ...

Page 25: ...Measuring DC Voltage WARNING IF YOU ATTEMPT TO MEASURE A VOLTAGE ABOVE 1000 VOLTS DC YOU MIGHT DAMAGE YOUR METER AND EXPOSE YOURSELF TO A SEVERE SHOCK HAZARD 22 218 fm Page 25 Friday August 6 1999 11 44 AM ...

Page 26: ...s Note If you are not certain about the voltage level start with the 1000 DC V range Then try the next lowest range until the reading appears in the upper third of the meter scale 2 Connect the test probes to the circuit 3 Read the voltage on the scale 22 218 fm Page 26 Friday August 6 1999 11 44 AM ...

Page 27: ...suring AC Voltage WARNING IF YOU ATTEMPT TO MEASURE A VOLTAGE GREATER THAN 1000 VOLTS AC YOU MIGHT DAMAGE THE METER AND EXPOSE YOURSELF TO A SEVERE SHOCK HAZARD 22 218 fm Page 27 Friday August 6 1999 11 44 AM ...

Page 28: ...s Note If you are not certain about the voltage level start with the 1000 AC V range Then try the next lowest range until the reading appears in the upper third of the meter scale 2 Connect the test probes to the circuit 3 Read the voltage on the scale 22 218 fm Page 28 Friday August 6 1999 11 44 AM ...

Page 29: ... line to line voltages please note the following Because of the dangers inherent in the measurement of three phase circuits we strongly recommend against the use of this meter for such applications If you choose to make the measurements use extreme care The actual voltage can be greater than the circuit s rated voltage line to ground 22 218 fm Page 29 Friday August 6 1999 11 44 AM ...

Page 30: ...to ground voltage by 1 732 For example if the rated voltage is 600 volts the line to line voltage would be 600 Volts x 1 732 1039 2 Volts In this example the voltage exceeds the meter s range and should not be measured 22 218 fm Page 30 Friday August 6 1999 11 44 AM ...

Page 31: ...s you cannot take ordinary measurements The readings wander on the scale and are not accurate However if you know the approximate AC voltage and it does not exceed 30 volts AC you can measure it by connecting a 0 1 mF 100 volt polyester film capacitor in series with the pos itive voltage source and the meter s red probe 22 218 fm Page 31 Friday August 6 1999 11 44 AM ...

Page 32: ... WARNING NEVER CONNECT THE TEST LEADS TO A SOURCE OF UNKNOWN VOLTAGE WHEN YOU HAVE SET THE FUNCTION SELECTOR TO THE 150 mA DC POSI TION 1 Set the function selector to 150 mA DC 22 218 fm Page 32 Friday August 6 1999 11 44 AM ...

Page 33: ...e circuit in which you want to measure current Then connect the black test probe to the negative side and the red test probe to the positive side of the circuit Read the results on the scale 22 218 fm Page 33 Friday August 6 1999 11 44 AM ...

Page 34: ...OF VOLTAGE WHEN YOU HAVE SET THE FUNCTION SELECTOR TO THE Rx1K W POSITION BE SURE THAT THE CIRCUIT UNDER TEST HAS ALL POWER REMOVED AND THAT ANY ASSOCIATED CAPACITORS ARE FULLY DISCHARGED BEFORE YOU MAKE A RESISTANCE MEASUREMENT 22 218 fm Page 34 Friday August 6 1999 11 44 AM ...

Page 35: ...tteries 2 Set the function selector to Rx1K W Touch the probes together and adjust the OHMS ADJ control to bring the pointer to the 0 position on the scale 3 Touch the probes across the circuit or component you are testing Read the results on the scale 22 218 fm Page 35 Friday August 6 1999 11 44 AM ...

Page 36: ...ircuit from interfering with the reading When you try to identify cathode and anode ends or the type of transistor PNP or NPN the actual polarity of the meter s voltage is the opposite of the polarity suggested by the test probes color The red test probe is the nega tive source and the black test probe is positive 22 218 fm Page 36 Friday August 6 1999 11 44 AM ...

Page 37: ...enjoy it for years Keep the meter dry If it gets wet wipe it dry immediately Liquids might contain minerals that can corrode the elec tronic circuits Use and store the meter only in normal temperature environments Temperature extremes can shorten the life of electronic devices damage batteries and distort or melt plastic parts 22 218 fm Page 37 Friday August 6 1999 11 44 AM ...

Page 38: ...emature wear of parts Wipe the meter with a damp cloth occasionally to keep it looking new Do not use harsh chemicals cleaning sol vents or strong detergents to clean the meter Use only a fresh battery of the recommended size and type Always remove an old or weak battery It can leak chemicals that can destroy electronic circuits 22 218 fm Page 38 Friday August 6 1999 11 44 AM ...

Page 39: ...e meter s internal components can cause a malfunction and might invalidate its warranty If your meter is not performing as it should take it to your local Radio Shack store for assistance 22 218 fm Page 39 Friday August 6 1999 11 44 AM ...

Page 40: ...ore Warranty does not cover transportation costs Nor does it cover a product subjected to misuse or accidental damage EXCEPT AS PROVIDED HEREIN RADIO SHACK MAKES NO EXPRESS WARRAN TIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURA TION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN Some states do not permit limitation or exclusion of implied warranties therefore the aforesaid ...

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