GB Instruments GMT-19A Owner'S Manual Download Page 1 | Manualshive

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Analog Multimeter

Owners Manual Model

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Gardner

Bender

GMT-19A

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Summary of Contents for GMT-19A

Page 1: ...Analog Multimeter Owners Manual Model Read this owners manual thoroughly before use and save Gardner Bender GMT 19A ...

Page 2: ...rew Input Jacks 1 0 Meter Functions Zero Ohms Adjustment 1 0 Meter Functions 2 0 Specifications 2 1 For Your Safety 3 0 Operating Suggestions 3 1 Preliminary Adjustments 3 2 Internal Battery Condition 4 0 DC Voltage Measurement 4 1 Automotive Batteries 4 2 Alternators and Generators 4 3 Household Batteries 5 0 DC Milliamp Measurement 6 0 AC Voltage Measurement 6 1 Wall Receptacles 6 2 Appliance Re...

Page 3: ... 10 amps on a separate jack unfused Resistance ohms Rx1 resistance indicated multiplied by 1 Rx10 resistance indicated multiplied by 10 Rx1K resistance indicated multiplied by 1000 10 Megohm Max Continuity Buzzer For audible continuity checks Buzzer sounds at less than 100 ohms Decibels 8dB to 22dB on AC voltage ranges Accuracy DC voltage Amps 4 full scale of range AC voltage 5 full scale of range...

Page 4: ...f reading lay the tester on a flat non metallic surface 4 When the tester is not in use keep the function range switch in the OFF position This keeps the needle indicator from deflecting or bouncing excessively 5 When disconnecting the test leads from the unit always grasp the leads where the input jacks meet the tester housing Never pull the leads out of the jacks by the insulated wire or transpo...

Page 5: ...G When making automotive measurements observe safety precautions Stay away from the fan blades belts and other moving parts of the engine Keep the multimeter and its leads away from moving parts Figure 3 7 2 Set the function range switch to the appropriate DC voltage range If the voltage is unknown use the highest range If the voltage applied falls within the range of a lower setting reset the fun...

Page 6: ...SUREMENT Read the 0 10 scale 9 4 3 Household Batteries Household batteries can be tested in either one of two ways For a good bad check set the function range switch to the 1 5V or 9V BAT setting depending on which type of battery is to be tested Plug the red test lead into the jack marked V Ω A Touch the red lead to the terminal of the battery and the black lead to the terminal of the battery Rea...

Page 7: ...tage range If the voltage is unknown use the highest range If the voltage applied falls within the range of a lower setting reset the function range switch to the appropriate setting for greatest accuracy of reading 3 Touch the test leads to the circuit under test With AC voltage the polarity of the test leads is not a factor Use the following chart below as a guide to reading AC voltage measureme...

Page 8: ...unction range switch to 250 VAC Touch the test leads to the receptacle slots The tester should read 240 VAC between the two hot sides of the receptacle and 120 VAC between the neutral slot and either of the two hot sides see fig 7 6 3 Circuit Breaker Panel To test for defective circuit breakers set the function range switch to the 250 VAC or 600 VAC settings Touch one test lead to the neutral buss...

Page 9: ...ne which two terminals control that ON position 15 Common Resistance and Continuity Measurements Continuity tests are probably the most frequently performed electrical troubleshooting procedures around the home ALWAYS REMEMBER THAT CONTINUITY CHECKS ARE TO BE MADE WITH THE POWER TO THE CIRCUIT TURNED OFF Polarity of the test leads is not a factor in making continuity checks 7 1 Extension Cords Unp...

Page 10: ...ltage ranges and read the decibel measurement on the bottom red scale of the faceplate Based on the AC voltage 8 0 Decibel Measurement Figure 12 range you selected you will need to compute the actual measurement by using the decibel conversion chart located at the bottom right of the faceplate Important For absolute decibel measurements circuit impedance must be at least 600 ohms 0 decibels 1 mill...

Page 11: ...Gardner Bender www gardnerbender com PO Box 3241 Milwaukee WI 53201 3241 414 352 4160 6615 Ordan Drive Mississauga Ontario L5T 1X2 905 564 5749 Rev A ...

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