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ZI-6921

OPERATING INSTRUCTION

AUTORANGING MULTIMETER

www.zicotech.com

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Summary of Contents for ZI-6921

Page 1: ...ZI 6921 OPERATING INSTRUCTION AUTORANGING MULTIMETER www zicotech com ...

Page 2: ...dry clothing rubber shoes rubber mats or any approved insulating material Turn off power to the circuit under test before cutting unsoldering or breaking the circuit Small amounts of current can be dangerous Use caution when working above 60V dc or 30V ac rms such voltages pose a shock hazard When using the probes keep your fingers behind the finger guards on the probes Measuring voltage which exc...

Page 3: ...tes a potentially hazardous situation which if not avoided may result damage to the product This symbol advises the user that the terminal s so marked must not be connected to a circuit point at which the voltage with respect to earth ground exceeds in this case 500 VAC or VDC This symbol adjacent to one or more terminals identifies them as being associated with ranges that may in normal use be su...

Page 4: ...lay with symbolic signs 2 Function switch 3 10A positive input jack for 10A DC or AC measurements 4 COM negative input jack 5 Positive input jack 6 MODE pushbutton 7 Range pushbutton 8 Data Hold Back Light pushbutton 9 Relative pushbutton 10 Battery Cover ...

Page 5: ...th function indication Polarity Automatic negative polarity indication Overrange OL mark indication Low battery indication The BAT is displayed when the battery voltage drops below the operating level Measurement rate 2 times per second nominal Auto power off Meter automatically shuts down after approx 30 minutes of inactivity Operating environment 0 o C to 50 o C 32 o F to 122 o F at 70 relative ...

Page 6: ...acy 400 0mV 0 1mV 0 5 of rdg 2 dgts 4 000V 1mV 1 2 of rdg 2 dgts 40 00V 10mV 400 0V 100mV 600V 1V 1 5 of rdg 2 dgts Input Impedance 7 8M Maximum Input 600V dc or 600V ac rms AC Voltage Auto ranging except 400mV Range Resoluti on Accuracy 400 0mV 0 1mV 1 5 of rdg 70 dgts 4 000V 1mV 1 2 of rdg 3 dgts 40 00V 10mV 1 5 of rdg 3 dgts 400 0V 100mV 600V 1V 2 0 of rdg 4 dgts Frequency Range 50 to 400Hz Max...

Page 7: ... range AC Current Auto ranging for uA and mA Range Resolution Accuracy 400 0uA 0 1uA 1 5 of rdg 5 dgts 4000uA 1uA 1 8 of rdg 5 dgts 40 00mA 10uA 400 0mA 100uA 10A 10mA 3 0 of rdg 7 dgts Overload Protection 0 5A 250V and 10A 250V Fuse Frequency Range 50 to 400 Hz Maximum Input 400mA dc or 400mA ac rms on uA mA ranges 10A dc or ac rms on 10A range Resistance Auto ranging Range Resolution Accuracy 1 ...

Page 8: ...nging Range Resolution Accuracy 5 000Hz 0 001Hz 1 5 of rdg 5 dgts 50 00Hz 0 01Hz 500 0Hz 0 1Hz 1 2 of rdg 3 dgts 5 000kHz 1Hz 50 00kHz 10Hz 500 0kHz 100Hz 5 000MHz 1kHz 1 5 of rdg 4 dgts 10MHz 10kHz Sensitivity 8V RMS Overload protection 250V dc or ac rms Duty Cycle Range Resolution Accuracy 0 1 99 9 0 1 1 2 of rdg 2 dgts Pulse width 100us 100ms Frequency width 5Hz 150kHz Sensitivity 8V RMS Overlo...

Page 9: ...reshold Test current 0 3mA Overload protection 250V dc or ac rms OPERATION WARNING Risk of electrocution High voltage circuits both AC and DC are very dangerous and should be measured with great care 1 ALWAYS turn the function switch to the OFF position when the meter is not in use This meter has Auto OFF that automatically shuts the meter OFF if 30minutes elapse between uses 2 If OL appears in th...

Page 10: ...e best mode for most measurements For measurement situations requiring that a range be manually selected perform the following 1 Press the RANGE button The AUTO display indicator will turn off 2 Press the RANGE button to step through the available ranges until you select the range you want 3 Press and hold the RANGE button for 2 seconds to exit the ManualRanging mode and return to AutoRanging DATA...

Page 11: ...he measured value 1 Perform any measurement as described in the operating instructions 2 Press the RELATIVE button to store the reading in the display and the REL indicator will appear on the display 3 The display will now indicate the difference between the stored value and the measured value 4 Press the RELATIVE button to return to normal operation DC VOLTAGE MEASUREMENTS CAUTION Do not measure ...

Page 12: ...ep in the outlets As a result the reading may show 0 volts when the outlet actually has voltage on it Make sure the probe tips are touching the metal contacts inside the outlet before assuming that no voltage is present CAUTION Do not measure AC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the V...

Page 13: ...o the mA range and insert the red test lead banana plug into the mA jack 4 For current measurements up to 10A DC set the function switch to the A position and insert the red test lead banana plug into the 10A jack 5 Press the AC DC button until DC appears in the display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch the bl...

Page 14: ...ch to the mA range and insert the red test lead banana plug into the mA jack 4 For current measurements up to 10A AC set the function switch to the A position and insert the red test lead banana plug into the 10A jack 5 Press the AC DC button until AC appears in the display 6 Remove power from the circuit under test then open up the circuit at the point where you wish to measure current 7 Touch th...

Page 15: ...he part under test so the rest of the circuit will not interfere with the resistance reading 4 Read the resistance in the display The display will indicate the proper decimal point value and symbol CONTINUITY CHECK WARNING To avoid electric shock never measure continuity on circuits or wires that have voltage on them 1 Set the function switch to the cap position 2 Insert the black lead banana plug...

Page 16: ... reading 6 The diode or junction can be evaluated as follows A If one reading shows a value and the other reading shows OL the diode is good B If both readings show OL the device is open C If both readings are very small or 0 the device is shorted NOTE The value indicated in the display during the diode check is the forward voltage FREQUENCY MEASUREMENT 1 Set the function switch to the FREQ positi...

Page 17: ...oint value and symbol TEMPERATURE MEASUREMENTS WARNING To avoid electric shock disconnect both test probes from any source of voltage before making a temperature measurement 1 Set the function switch to TEMP 2 Insert the type K thermocouple probe black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Temp jack 3 Touch the Temperature Probe head t...

Page 18: ...replaced 2 Follow instructions for installing battery See the Battery Installation section of this manual 3 Dispose of the old battery properly WARNING To avoid electric shock do not operate your meter until the battery door is in place and fastened securely BATTERY INSTALLATION WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery door 1 ...

Page 19: ...he fuse door 1 Disconnect the test leads from the meter and any item under test 2 Open the fuse door by loosening the screw on the door using a Phillips head screwdriver 3 Remove the old fuse from its holder by gently pulling it out 4 Install the new fuse into the holder 5 Always use a fuse of the proper size and value 0 5A 250V fast blow for the 400mA range 10A 250V fast blow for the 10A range 6 ...

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