APPA 39MR User manual

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INTRODUCTION
1-1 Unpacking and Inspection
Upon removing your new Clamp Multimeter from its packing, you should have the following items:
1. Clamp Multimeter.
2. Test lead set (one black, one red).
3. Carrying case.
4. Instruction manual.
1-2 Meter Safety
Terms as Marked on Equipment
ATTENTION — Refer to manual
DOUBLEINSULATION — Protection Class II
DANGER — Risk of electric shock.

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Symbols in this Manual
This symbol indicates where cautionary or other information is found in the manual.
Battery
1-3 Front Panel
Refer to Figure 1 and the following numbered steps to familiarize yourself with the meter’s front panel
controls and connectors.
1. Digital Display —The digital display has a 3 3/4 digit LCD readout (maximum reading 3999) plus auto polarity,
decimal point, , AC, DC, and unit annunciators.
2. Input Terminal — The black test lead is always connected to the “COM” input jack and the red test lead is always
connected to the “V Ω” input jack when measuring voltage or resistance.
* COM input terminal : Reference input connector.
* V Ωinput terminal : Positive input connector.

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3. Function Switch —Rotary switch is used to select Hz, V, V, Ω, A, Afunction.
4. Trigger — Press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will
close again.
5. Transformer Jaws — Designed to pick up the current flowing through the conductor.
6. Hand Guard — Designed to protect user for safety.
7. PEAK HOLD SWITCH — To hold the peak measured positive value. For negative value zero is displayed.
8. DCA ZERO SWITCH — Auto compensate the residual magnetism by pressing this key (for A only)

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Figure 1

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SPECIFICATIONS
2-1 General Specifications
Display : 3 3/4 Digital Liquid Crystal Display ( LCD) with a maximum reading of 3999.
Polarity : Automatic polarity indicated.
Overrange Indication : “OL” or “-OL” indicated.
Range : Autoranging.
Measuring Rate : 2 times per second, nominal.
Position Error : +/- 1% of Reading.
Type Of Sensing : Hall effect sensing for AC and DC
Low Battery Indication :“ “ is displayed when the battery voltage drops below the operating voltage.
Power Requirement : Single 9V battery (NEDA 1604, JIS 006p or IEC6LF22).
Battery Life : 40 hours typical. (Alkaline)

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Max/Conductor Size : 51mm diameter or 24 x 60mm busbar.
Size : 100mm (W) x 265mm (L) x 42mm (H).
Weight : 420 grams (including battery)
Accessories : Test leads, battery (installed), manual and carrying case.
2-2 Environmental Conditions:
Indoor use
Maximum Altitude : 2000 Meter
Installation Category : IEC 1010 1000V CAT. II . , 600V CAT. III.
Pollution Degree : 2
Temperature Coefficient : 0.2 x (spec.Acc’y) / °C, <18 °C or > 28 °C.
Operating Ambient : 0ºC to + 45ºC (below 80%R.H.)
Storage Temperature : -20ºC to + 60ºC (below 80% R.H.)

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2-3 Electrical Specifications
Accuracy is ± (% reading + number of digits) at 23ºC ± 5ºC, less than 80% R.H.
(1) Frequency : Hz
Range Resolution Accuracy Over Voltage
Protection
4KHz 1Hz
±(0.5% rdg + 3 dgt)
10KHz 10Hz
AC/DC 2000A
for 1 min.
Min. Input Frequency : 20Hz
Sensitivity : 6A r.m.s. for ACA (A)
3V r.m.s. to 600V r.m.s. for ACV (V).

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(2) ACV : V
Range Resolution Accuracy Overload Protection
400V 0.1V ±(1.2% rdg + 5 dgt)
50Hz -500Hz
600V 1V 850V rms
Additional error according to crest factor (CF) : CF from 2 to 3 : + 1.4%
CF from 3 to 4 : + 3%
Input impedance : 10MΩ// 100pF.
Conversion type : True RMS.
(3) DCV : V
Range Resolution Accuracy Overload Protection
400V 0.1V
±(0.7% rdg + 2 dgt)
1000V 1V 1000V
Input impedance : 10MΩ.

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(4) Resistance : Ω
Range Resolution Accuracy Max. Open
Circuit Voltage Overload Protection
4KΩ 1Ω 3.3V 600V r.m.s.
40KΩ10Ω
±(1.0% rdg + 2 dgt)
Instant Continuity Description : Built - in buzzer sound when resistance is less than 100Ω.
(5) DCA : A 
Range Resolution Accuracy Overload Protection
0 ~ 400A 0.1A
AC 2000A
for 1 min.
400 ~ 600A 1A
600 ~ 1000A 1A ±(1.9% rdg + 5 dgt)
±(1.0% rdg + 3 dgt)

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Additional error according to remanence : 1% max. of current crest
(6) ACA : A 
Range Resolution Accuracy Frequency
Response Overload Protection
0 ~ 400A 0.1A
±(1.5% rdg + 5 dgt) 40 ~ 400 Hz
400 ~ 600A 1A
600 ~ 1000A 1A ±(2.5% rdg + 5 dgt) 40 ~ 200 Hz
AC 2000A
for 1 min.
Additional error according to crest factor (CF) : CF from 2 to 3: + 1.4%
CF from 3 to 4: + 3%
Conversion type : True RMS.
(7) Auto Power off : The meter will automatically shut itself off after approximately 10 minutes after function changes.
(8) Peak Hold : ± (3%rdg + 10dgt)

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OPERATION
This instrument has been designed and tested in accordance with IEC Publication 1010, Safety Requirements
for Electronic Measuring Apparatus and has been supplied in a safe condition. This instruction manual
contains some information and warnings which have to be followed by the user to ensure safe operation and
to retain the instrument in safe condition.
3-1 Precautions and Preparations for measurement
1. If the meter is used near equipment that generates electro-magnetic inference, the display may be unstable or
indicate incorrect measurement values.
2. Make sure that the battery is properly connected.
3. The instrument should only be operated between 0°C~ 45°C and at less than 80% R.H.
4. Do not use or store this instrument in a high temperature or high humidity environment and do not store the unit in
direct sunlight.
5. Do not replace battery with power on condition.

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6. If the unit is not to be used for a long period of time, remove the battery.
7. Do not forget to turn off after use.
 THIS INSTRUMENT MUST NOT BE USED ON UNINSULATED CONDUCTORS AT A VOLTAGE GREATER
THAN 600V ac/dc.
3-2 Frequency measurement
A. Frequency measurement by clamp on (AC current)
1. Set the rotary switch to "Hz" position.
2. Open spring-loaded clamp by pressing trigger on left side of meter.
3. Position clamp around wire or conductor and release clamp trigger, make sure that the clamp is entirely closed.
The clamp must be positioned around only one conductor of a circuit. If the clamp is placed around two or more
current carrying conductors, the meter reading will be false.

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B. Frequency measurement by input terminal (AC voltage)
1. Set the rotary switch to "Hz" position.
2. Connect the black test lead to the “COM” terminal on the bottom of the meter and the red test lead to the "V Ω"
terminal.
You can now place the test probes on the conductors to make the measurement.
3-3 AC Voltage Measurement
1. Set the rotary switch at "V" position.
2. Connect the black test lead to the “COM” terminal on the bottom of the meter and the red test lead to the “VΩ"
terminal. You can now place the test probes on the conductors to make the measurement.
To avoid electrical shock, hazard or damage to the meter, do not attempt to measure voltage that might exceed
850V ac rms between the common input terminal and earth ground.

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3-4 DC Voltage Measurement
1. Set the rotary switch at "V " position.
2. Connect the black test lead to the “COM” terminal on the bottom of the meter and the red test lead to
the "V Ω” terminal. You can now place the test probes on the conductors to make the measurement.
 To avoid electrical shock, hazard or damage to the meter, do not attempt to measure voltage that might
exceed 1000V dc between the common input terminal and earth ground.
3-5 Resistance Measurement
1. Set the rotary switch at "KΩ" position.
2. Connect the black test lead to the “COM” terminal on the bottom of the meter and red test lead to the
"V Ω" terminal.
3. Verify that the power to the circuit under test is off. Connect test leads to the circuit to make the
measurement.
* Built - in buzzer sounds if the resistance of the circuit under test is less than 100Ω.

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3-6 DC Current Measurement
Set the rotary switch at “A “ position at first.
Low current : Press DCA ZERO switch before measuring.
High current :
1. Enclose the conductor lead and close the clamp.
2. Remove the clamp and press the DCA ZERO switch . (remnant magnetization compensation)
3. Enclose the conductor lead and close the clamp to go on with measurements (same current direction).
For DC measurement, the reading is positive value when the current flows from the upper side to the lower side of
the instrument as Fig. 2
4. Position clamp around wire or conductor and release clamp trigger, make sure that the clamp is entirely closed.
The clamp must be positioned around only one conductor of a circuit. If the clamp is placed around two or more
current carrying conductors, the meter reading will be FALSE.

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3-7 AC Current Measurement
1. Set the rotary switch at " A" position.
2. Open Spring-loaded clamp by pressing trigger on left side of meter.
3. Position clamp around wire or conductor and release clamp trigger, make sure that the clamp is entirely closed.
The clamp must be positioned around only one conductor of a circuit. If the clamp is placed around two or more
current-carrying conductors, the meter reading will be FALSE.

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MAINTENANCE WARNING
TO AVOID ELECTRICAL SHOCK REMOVE TEST LEADS BEFORE OPENING THE COVER.
4-1 General Maintenance
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 and detergent do not use abrasives or solvents.
4-2 Battery Installation or Replacement
The meter is powered by a single 9V battery. Use the following procedure to replace the battery.
1. Disconnect the test leads and turn the meter off. Remove the test leads from the input terminals.
2. Turn the meter power off.
3. Position the meter face down and remove the two screws of the case bottom.
4. Unsnap the case bottom and remove the battery.
5. Install a new 9V battery and refit the case bottom.

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Figure 2
Battery Replacement Or Installation