APPA 67 Pocket-Size Multimeter User Manual

APPA 67 Pocket-Size Multimeter

The Pocket-Size Multimeter is a digital multimeter that measures various electrical parameters such as DC voltage, AC voltage, DC current, AC current, resistance, diode check, and continuity. The device comes with a test lead set (one black, one red), an operator’s manual, and a holster.

Safety Information

Warning (Identify hazardous conditions and actions that could cause BODILY HARM or DEATH)

• General (Including the request from EN61010-1)
• If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
• Always use proper terminals, switch position, and range for measurements.
• To reduce the risk of fire or electric shock, do not use this product around explosive gas or vapor.
• Verify the Meter operation by measuring a known voltage. If in doubt, have the Meter serviced.
• Do not apply more than the rated voltage, as marked on Meter, between terminals or between any terminal and earth ground.
• To avoid false readings that can lead to electric shock and injury, replace battery as soon as low battery indicator appears.
• Avoid working alone so assistance can be rendered.
• Do not use the Tester if the Tester is not operating properly or if it is wet.
• Individual protective device must be used if hazardous live parts in the installation where the measurement is to be carried out could be accessible.
• When using test leads or probes, keep your fingers behind the finger guards.
• Do not use test leads or the Tester if they look damaged.
• Remove test lead from Meter before opening the battery door or Meter case.
• Only replace the blown fuse with the proper rating as specified in this manual.
• Do not attempt a current measurement when the open voltage is above the fuse protection rating. Suspected open voltage can be checked with voltage function.
• Never attempt a voltage measurement with the test lead inserted into the A input terminal
• Use caution with voltages above 30 Vac rms, 42 Vac peak, or 60 Vdc. These voltages pose a shock hazard.
• DO NOT USE the test leads above maximum ratings of CAT. environment, voltage and current, that are indicated on the probe and the probe tip guard cap.
• DO NOT USE the test leads without the probe tip guard cap in CAT III and CAT IV environments.
• Probe assemblies to be used for MAINS measurements shall be RATED as appropriate for MEASUREMENT CATEGORY III or IV according to IEC 61010-031 and shall have a voltage RATING of at least the voltage of the circuit to be measured.
• Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes.

Caution (Identify conditions and actions that could cause DAMAGE the meter or equipment under test)

General

• Disconnect the test leads from the test points before changing the position of the function rotary switch.
• Never voltage with the function rotary switch in resistance, diode, continuity
• Do not expose Meter to extremes in temperature of high humidity.

Symbols as marked on the Tester and Instruction card

Warning When connecting the test leads to the DUT (Device Under Test) connect the common test leads before connecting the live test leads; When removing the test leads, remove the live test leads before removing the common test leads.

INTRODUCTION

Unpacking and Inspection
Upon removing your new Digital Multimeter from its packing, you should have the following items:

1. Digital Multimeter.
2. Test lead set (one black, one red).
3. Operators Manual.
4. Holster.

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 3200 counts LCD readout with 65 segments analog bar graph, auto polarity, decimal point, , HOLD, DC, AC , ,RANGE, and Unit annunciators.
2. Rotary Switch — Selects the desired function and range.
3. COM Input Terminal — Ground input connector.
4. Input Terminal — Positive input connector for Volts, Ohms and Diode measurements.
5. μA mA Input Terminal — Positive input connector for current and measurements. (up to 300mA).
6. A Input Terminal — Positive input connector for current measurements, up to 10A.
7. Function Switch (Blue) — Press the switch to measure AC voltage or DC voltage in the Voltage mode or to measure AC current or DC current in the current mode, or to measure continuity or diode check in mode.
8. Reset Switch — The meter can be turned back on by pushing “RESET” key switch.
9. Hold Switch — This switch is used to hold measured values for all functions. When pressed the “HOLD” annunciator is displayed. Conversions are made but the display is not updated.
10. Range Switch (Manual Range) — The “Range” switch is pressed to select manual ranging and to change ranges. When the “Range” switch is pressed once, the “RANGE” annunciator on the LCD disappears. Press the “Range” switch to select the appropriate range to be used. Press the “Range” switch and hold for 2 seconds to return to Auto-ranging.

SPECIFICATIONS

General Specifications

• Display: The Liquid Crystal Display (LCD) has amaximum reading of 3200, and 65 segments bar graph.
• Polarity Indication: Automatic, positive implied, negative indicated.
• Overrange Indication: “OL” or “-OL”, except 600V Range.
• Low Battery Indication: “ ” is displayed when the battery voltage drops below operating voltage.
• Sampling: 2 times/sec for digit. 12 times/sec for analog bargraph.
• Auto Power Off: Approximately 10 minutes unless the measured value changes within this time.
• Temperature Coefficient: 0.15 x (Specified accuracy) / °C, < 18°C or > 28°C.
• Power Requirements: IEC LR03, AM4 or AAA size 1.5V x 2.
• Battery Life: Alkaline 900 hours.
• Dimensions (HxWxD):
  • 66mm x 155mm x 34mm, without holster.
  • 85mm x 165mm x 40mm, with holster.
• Weight (including battery): 250 gms, without holster / 370 gms, with holster.
• Supplied Accessories: Test leads, battery (installed), operator’s manual and holster.

Environmental Conditions
For indoor use.

• Maximum Altitude: 2000m.
• Pollution Degree: 2
• Operating Ambient: 0°C to 50°C, 0 to 80% R.H.
• Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from meter.
• Installation Category: EN 61010-1, EN61010-2-033 CAT II.600V, CAT III.300V
• EMC: EN61326-1
• Shock Vibration: Sinusoidal Vibration per MIL-PRF-28800F (5~55Hz, 3g Maximum)
• Drop Protection: 4 feed drop to hardwood on concrete floor.

Electrical Specifications

• Accuracy is ± (% reading + number of digits) at 23°C ± 5°C less than 80% R.H.
• Accuracy is specified for a period of one year after calibration.

1. DC Volts
   Input Impedance: 10MΩ.

2. AC Volts
   Frequency Response: 40Hz ~ 300Hz for 3V Range.
   AC Conversion Type: Average Sensing rms indication.
   Input Impedance: 10MΩ //less than 100PF.

3. DC Current
   20A Range: 30 seconds maximum above 10A input.
   Overload Protection: 600mA/600V fast for μA/mA input. 12A/600V fast for A input.

4. **AC Current

• Frequency Response:** 40Hz ~ 500Hz.
  * 20A Range: 30 seconds maximum above 10A input.
  Overload Protection: 600mA/600V fast for μA/mA input. 12A/600V fast for A input.
  AC Conversion Type: Average sensing rms indication.

  5. Resistance
     * Open Circuit Voltage: 1.3V approx.
     There is a little rolling less than ±50 digits when measuring > 10.00 MΩ.

  6. Diode Check and Continuity
     *For 0.4V ~ 0.8V.
     Overload Protection: 600V DC/AC rms max.
     Continuity: Built-in sounder will operate when resistance is less than 30Ω.

  7. Auto Power Off
     The meter will automatically shut itself off approximately 10 minutes after power on unless the value being measured changes within this time. The meter can be turned back on by pressing “Reset” key switch.

  8. Beep Guard
     The beeper will sound if the test lead is connected to the μ A/mA/(A) input terminal, but the rotary function selector is not in the μA/mA/(A) positions.

Preparation and Caution before Measurement

1. Before measurement, warm up for at least 30 seconds.
2. When the rotary function selector is changed during measurement, be sure to do so only after removing the test leads from the equipment.
3. If the equipment is used near noise generating equipment, be aware that the display may become unstable or indicate large errors.
4. Maximum rated voltage to earth for voltage and current measurements terminals is 600V AC/DC CAT II.

Voltage Measurements

1. Connect the red test lead to the ” ” input terminal and the black test lead to the “COM” terminal.
2. Set the rotary function switch to the ACV or DCV position.
3. Connect the test leads to the device to be measured.
4. When the input is over-ranged the most significant digit of LCD display flashes and the three last significant digits are set to zero.
5. “ Warning: Do not exceed 600Vd.c. or 600Va.c. limits stated in the specification”.

Warning
TO AVOID ELECTRIC SHOCK HAZARD, OR DAMAGE TO THE METER, DO NOT ATTEMPT TO MEASURE VOLTAGES THAT MIGHT EXCEED 600 VOLTS d.c. OR 600 VOLTS a.c.. DO NOT APPLY MORE THAN 600V d.c. OR 600V a.c. RMS BETWEEN THE COMMON INPUT TERMINAL AND EARTH GROUND.

Resistance Measurement

1. Connect the red test lead to the “ ” terminal and the black test lead to the “COM” terminal.
2. Set the rotary function switch to the “Ω” position to measure resistance.
3. For correct reading, ensure that there is no voltage present across the device being tested.
4. Connect the test leads across the resistor to be measured. To ensure the best accuracy in measurement of low resistance, short the test leads before measurement and note the test lead resistance. It is necessary to subtract the resistance of the test leads from the displayed reading.

Continuity Check by Sounder

1. Connect the red test lead to the “ ” terminal and the black test lead to the “COM” terminal.
2. Set the rotary function switch to ” ” position.
3. Connect the test leads to the circuit to be measured. The sounder will operate if the resistance of the circuit measured is lower than 30Ω.
4. The sounder may operate when the instrument is first switched on in the continuity mode and all the LCD segments are displayed.

Diode Check

1. Set the rotary switch to the ” ” position.
2. Connect the black test lead to the “COM” terminal and the red lead to the ” ” input terminal.
3. Connect the test leads to the diode. Normally the forward drop of good silicon diode is shown between 0.4V to 0.9V. If the diode under test is defective, “000” (short circuit) or “OL” (non-conductance) is displayed.

Reverse Check of Diode: If the diode under test is good “1” is displayed. If the diode under test is defective “000” or other values will be displayed.

Current Measurement

1. Connect the red test lead to “μA/mA” terminal and the black test lead to “COM” terminal or use the “A” and “COM” terminal in the “A” range.
2. Set the function selector rotary switch to “μA” or “mA” or “A”.
3. Measurement of AC current can be performed by pressing the “AC/DC” switch.
4. Connect the test leads to the circuit to be measured.

MAINTENANCE

WARNING: TO AVOID ELECTRICAL SHOCK REMOVE TEST LEAD BEFORE OPENING THE COVER.

General Maintenance
To keep the instrument clean, wipe the case with a dry cloth and detergent, do not use abrasives or solvents. Any adjustment, maintenance and repair of the opened instrument under voltage shall be avoided as far as possible and, if inevitable, shall be carried out by a skilled person who is aware of the hazard involved. Whenever it is likely that the protection has been impaired, the instrument shall be made inoperative and be secured against any unintended operation. The protection is likely to be impaired if, for example, the apparatus:

• shows visible damage,
• fails to perform the intended measurements,
• has been subjected to prolonged storage under unfavorable conditions,
• has been subjected to severe transport stresses.

BATTERY INSTALLATION OR REPLACEMENT
The meter is powered by two 1.5V batteries. Refer to Figure 2A and use the following procedure to replace the batteries:

1. Disconnect the test leads and turn the meter off. Remove the test leads from the front terminals.
2. Remove the holster.
3. Position the meter face down. Remove the screw from the case bottom.
4. Lift the end of the case bottom until it gently unsnaps from the case top at the end nearest the LCD.
5. Lift the battery from case top, and carefully disconnect the batteries from battery connector leads.
6. Snap the battery connector leads to the terminals of the new batteries and reinsert the batteries into the case top. Make sure that the battery leads to not become pinched between the case bottom and case top.
7. Replace the case bottom. Reinstall the screw and replace the holster.

FUSE REPLACEMENT
Refer to Figure 2B and use the following procedure to examine or replace the meter’s fuse:

1. Perform steps 1 through 4 of the battery replacement procedure.
2. Lift the circuit board from case top. Do not remove the screws from the circuit board.
3. Remove the defective fuse by gently prying one end of the fuse loose and sliding the fuse out of the fuse holder.
4. Install a new fuse of the same size and rating. Make sure the new fuse is fitted centrally in the fuse holder.
5. Make sure that the case top rotary switch and circuit board switch both are in the OFF position.
6. Replace the case top and case bottom. Make sure that the battery leads do not become pinched between the case halves. Reinstall the screw.

BATTERY REPLACEMENT

HOW TO USE THE PROBE HOLDER

Wrap the leads around the holster to store the test probes.

Slide out one probe holder for one handed meter operation.

HOW TO USE THE TILT STAND AND HOLSTER

• Hang on a nail at the workbench.
• Swing the upper holder out and hook it over a door.
• Swing the stand out for easier meter reading.

Limited Warrantty

This Meter is warranted to the original purchaser against defects in material and workmanship for 3 years from the date of purchase. During this warranty period, the manufacturer will, at its option, replace or repair the defective unit, subject to verification of the defect or malfunction. This warranty does not cover, disposable batteries, or damage from abuse, neglect, accident, unauthorized repair, alteration, contamination, or abnormal conditions of operation or handling. Any implied warranties arising out of the sale of this product, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited to the above. The manufacturer shall not be liable for loss of use of the instrument or other incidental or consequential damages, expenses, or economic loss, or for any claim or claims for such damage, expense or economic loss. Some states or countries’ laws vary, so the above limitations or exclusions may not apply to you.

www.appatech.com

APAC MGL APPA Corporation
cs.apac@mgl-intl.com
Flat 4-1, 4/F, No. 35,
Section 3 Minquan East Road,
Taipei, Taiwan
Tel: +886 2-2508-0877

References

• APPA

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