Instruction Manual
Contents
1. Ll Lil MN 0 a inluisiutsinintaisisl Q Manual data memory and read location indicator Y Beeper symbol shows if beeper turned on in Q73 function High voltage warning symbol flashes if voltage 2 30V is present on the probes O Resistance reading held from the last measurement in MQ and Q function Zero symbol is on if test leads are zeroed out Lock symbol is on if the TEST mode is locked in MQ functions Low battery symbol Main display reading for all functions O Analog bar graph displays resistance on a logarithmic scale and voltage on a linear scale The value always tracks the main display 6 4 BEFORE OPERATION Warning e To avoid electrical shock remove test leads before opening case or battery cover Do not operate with battery cover open e To avoid electrical shock when performing resistance tests remove all power from the circuit to be measured e To avoid electrical shock first connect the test leads to the meter inputs before you make connection to the circuit under test e To avoid electrical shock do not touch test lead tips test points or terminals when pressing TEST 4 1 How to connect test leads Connect the red test lead into the VO terminal and the black lead into the COM terminal 4 2 Battery Check amp Replacement 1 If battery power is not sufficient LCD will display R Replacement of 6 pcs new batteries type 1 5V size AA2. 1000M Be Ue 2 400M0 100K0 500V 20 0 4000MQ 10MQ 5 5 400MQ 2000MQ REN 1000V 1000V 20 0 Analog Bar Graph 0 to 4000M Q Resistance amp Continuity lt 40 Q 3 PARTS amp CONTROLS I ES 7 A AX pease Reno waa FoR SAFETY va COM N_N 7 7 0 Je car in KIT ANRE A Bomer m 3888 nl PAIR EM 567890 1 Sa ww Wey Sr O LCD display MEM key Manual data memory control key LOCK key Locks the test Insulation Resistance MQ a Press and hold down TEST key then press LOCK key the LOCKg icon appears on the display b In MQ mode continuously applies the test voltage to the circuit to be tested The beeper sounds every 2 seconds to remind you that you are in the LOCK mode c Press Lock or TEST key again to exit the mode READ key Manual memory data reading control key om O Zero key In Q function turns the test lead resistance compensation ON oo Touch the probe tips together then press Zero key om the Zero icon appears on the display and the main display indicates 0 00 TEST key a Used for MQ test functions b Press and hold TEST key until the main display reading is stable O O WA keys In READ mode select the memory data location for direct reading the data from the display O Rotary switch To select a measurement function Input terminals Display 1 re as LER 6 p ay IE O
3. should be disconnected MOTORS AC Disconnect the motor from the line by disconnecting the wires at the motor terminals or by opening the main switch If the main switch is used and the motor also has a starter then the starter must be held by some means in the ON position In the latter case the measured resistance will include the resistance of the motor wire and all other components between the motor and the main switch If a weakness is indicated the motor and other components should be checked individually If the motor is disconnected at the motor terminals connect one megohmmeter lead to the grounded motor housing and the other lead to one of the motor leads Disconnect the motor from the line To test the brush rigging field coils and armature connect one megohmmeter lead to the grounded motor housing and the other lead to the brush on the commutator If the resistance measurement indicates a weakness raise the brushes off the commutator and separately test the armature field coils and brush rigging by connecting one megohmmeter lead to each of them individually leaving the other connected to the grounded motor housing The above also applies to DC Generators 11 MOTOR GROUND CONNECT TO MOTOR HOUSING Ground STARTER just be in Sone Position Y MAIN SWITCH MEGOHMMETER CONNECT TO MOTOR SIDE OF SWETCH LINE CABLES Disconnect the cable from power Also disconnec
4. A INSULATION TESTER AMPROBE AM B 25 INSTRUCTION MANUAL ANRE A orner 88688 z Zero Mm AC y Ko MA A aa van u 1 34 5 rest a Y MA 20 SWV gov OF e A Qn Ya N 1 SAFETY INFORMATION e The circuit under test must be de energized and isolated before connections are made except for voltage measurement e Verify operation prior to measuring hazardous voltages voltage above 30V AC rms 42V AC peak and 60V DC e Do not touch the Circuit connections during a test e Disconnect the live test lead before disconnecting the neutral test lead e After insulation tests to protect electric shock capacitive circuits must to be discharged e Do not use the meter if the low battery indicator BT is showed Test leads including crocodile clips must be in good order clean and no broken or cracked Do not use the meter if it looks damaged Do not use the meter around explosive gas vapor or dust Do not push test button before all connection and preparation is done The instrument must only be used by suitably trained and competent persons Do not use the meter with any parts or cover removed Do not use the meter in a wet environment U S PAT NO 478 017 JAPAN PAT NO 1180870 CHINA PAT NO ZL02367250 1 Warnings and Safety symbols Caution refer to this manual before using the meter Dangerous voltages Meter is protected throughout by do
5. emory address number data for display O Press READ key again to exit this mode 8 5 Q 33 RESISTANCE AND CONTINUITY MEASUREMENTS 1 Set the function switch to Q position 2 Connect red test lead to VQ terminal and black test lead to COM terminal 3 Connect the probe to the circuit to be measured Measure voltage first to ensure that no haszardous voltage is present then switch to ohms 4 Read the resistance value from the display If the resistance is approximately 400 or less the meter will beep 6 MQ INSULATION RESISTANCE MEASUREMENTS 6 1 Measuring Insulation Resistance Measuring insulation resistance requires the application of potentially dangerous voltage to the circuit This may include exposed bonded metal work Before proceeding ensure that the installation is correctly wired and no personnel are endangered by any test 1 Set the function switch to the desired MQ test voltage position 2 Connect red test lead to VQ terminal and black test lead to COM terminal 3 The display will show until the TEST button is pushed Press and hold the TEST key The upper right display shows the test voltage applied to the circuit under test The main display shows the resistance until a stable resistance reading is displayed on the main display 9 4 Keeping the probes on the test points when release the TEST key The uppe
6. en the two screws 4 Take off the battery cover 5 Remove the battery replace with six new batteries 6 Place the battery cover on and secure the two screws 10 MAINTENANCE amp CLEANING Maintenance amp Clearing 1 Repairs or servicing not covered in this manual should only be performed by qualified personnel 2 Periodically wipe the case with a dry cloth Do not use abrasives or solvents on this instrument 13 WARRANTY Congratulations Your new instrument has been quality crafted according to quality standards and contains quality components and workmanship It has been inspected for proper operation of all of its functions and tested by qualified factory technicians according to the long established standards of our company Your instrument has a limited warranty against defective materials and or workmanship for one year from the date of purchase provided that in the opinion of the factory the instrument has not been tampered with or taken apart Should your instrument fail due to defective materials and or workmanship during this one year period a no charge repair or replacement will be made to the original purchaser Please have your dated bill of sale which must identify the instrument model number and serial number and call the number listed below Repair Department ATP Amprobe TIF Promax Miramar FL Phone 954 499 5400 800 327 5060 Fax 954 499 5454 Website www Amprobe co
7. is required 2 Use a screw drive to unscrew the screw secured on battery cover Take out the used batteries and replace 6 pcs new batteries 3 Place back the battery cover and secure the screw 4 3 Auto Power Off 1 The meter automatically turns off after 15 minutes of non use 2 To turn the meter back on turn the rotary switch to OFF then to the desired function 4 4 Test Leads Check Set the range select switch to the Q 3 range Connect the crocodile clips with the test lead tips Clip alligator clips with lead other The indicator should read lt 0 50 When the leads are not connected the display will read infinity indicated by This will ensure that test leads are under working condition 7 4 5 Manual Data Memory and Read Mode 1 Clear the manual memorized data O Set the function switch to OFF position to turn off the meter Press and hold down MEM key and turn on the meter When LCD shows dEL which means the manual memorized data is erased 2 Manual data memory O Press MEM key each time one set of reading to will be stored to the memory At this moment LCD will show the MEM mark and the memory address number Total memory size is 9 sets When the memory is full LCD will show 9 memory address number 3 Read Manual memory data O Press READ key to enter READ mode the LCD will show READ mark and the memory address number O Press a or key to select the desired m
8. m Please obtain an RMA number before returning product for repair Outside the U S A the local representative will assist you Above limited warranty covers repair and replacement of instrument only and no other obligation is stated or implied M 7 Y ADVANCED TEST PRODUCTS Miramar FL Phone 954 499 5400 Fax 954 499 5454 www Amprobe com Sep 2003
9. r right display shows the measured resistance reading and the circuit now discharges through the meter while the main display reading shows the decreasing voltage keep the probe touched to test points until the circuit is completely discharged and the main display shows The upper right display holds the resistance reading until a new test is started or a different function is selected 6 2 Using the LOCK Function to Measure Insulation Resistance The LOCK function holds the test voltage on the probes Use LOCK function to make long duration measurements don t need to push and hold the TEST key 1 Press and hold the TEST key then press the LOCK key to enter LOCK mode In this mode a potentially dangerous voltage is continuously applied to the probes In this mode if the probes are disconnected from the circuit the meter cannot discharge any potentially dangerous capacitive voltages left on the circuit Ensure that the circuit is de energized before connecting the test probes 2 Press LOCK or TEST key to disable the Lock function 10 7 POWER TOOLS AND SMALL APPLIANCES This test would also apply to other similar equipment that has a line cord For double insulated power tools one leads of megohmmeter to be connected to the housing The other leads would be connected to some metal part of the tool e g chuck blade Note The switch of the device must be in the ON position and the main power
10. t opposite end to avoid errors of any leakage from other equipment Check each conductor to ground and or lead source by connecting one megohmmeter lead to a ground and or lead source and the other megohmmeter lead to each of the conductors in turn Check insulation resistance between conductors by connecting megohmmeter leads to conductors in pairs a MEGOHMMETER 8 FUSE CHECK amp REPLACEMENT 8 1 Testing the Fuse 1 Set the function switch to LoQ position 2 Connect the test leads to the input terminals and short then together 3 Press TEST key the display should indicate approximately 0 5 Q if the display reads OL replace the fuse as described next and test again 12 8 2 Replace the Fuse Warning To avoid electric shock personal injury or damage to the meter use only the specified fuse 1 2 3 Set the function switch to OFF position Disconnect test leads from any power source Place the meter face down on a nonabrasive surface and loosen the four screws Take off the bottom cover lt a Remove the fuse replace with a new fuse op u u o Place the bottom cover on and secure the four screws Test the fuse refer 8 1 Testing the Fuse N 9 BATTERY REPLACEMENT 1 Set the function switch to OFF position 2 Disconnect test leads from any power source 3 Place the meter face down on a nonabrasive surface and loos
11. uble insulation or reinforced insulation Comply with IEC1010 1 When servicing use only specified replacement parts 1 C MA 2 SPECIFICATIONS 2 1 General Information Environment conditions O Installation Categorieslll 1000V Pollution Degree 2 O Altitude up to 2000 meters Indoor use only Safety Meets of IEC61010 1 and IEC61557 Display Dual display 3 3 4 Digital readout with analog bar indication Sampling Rate 2 5 sample sec Manual data Memory and Read Memory capacity 9 set Over Range Indicator Ot will be displayed Low Battery Indication The BT will be displayed when the battery voltage drop below the operating voltage Operating Temperature and Humidity OT to 50 C 32 F to 122 F below 80 RH noncondensing Temperature Coefficient 0 10 x specified accuracy C Storage Temperature and Humidity 10 C to 60 C 14 F to 140 F below 70 RH noncondensing Battery 6 x 1 5V Size AA battery Fuse 6mm x 32mm 0 25 x 1 25 inch 0 5A 1000V Fast Acting Dimensions 235 L x 116 W x 54 H mm 9 3 L x 4 6 W x 2 1 H Weight Approx 520g 1 15 LB include battery Accessories Test leads 6pcs battery Holster operation manual 2 2 Electrical Specifications Accuracies are specified as of reading digits at 23 C 5 C below 80 RH A Insulation Resistance 40M N 400M 250V 20 0 40MQ 10 KO lt
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