APPA 97 Rugged Industrial Multimeter User Manual

APPA 97 Rugged Industrial Multimeter

WARNING

THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.

Also the complete duty cycle for the 20A measurement should be stated as on for 30 seconds max., and off for 3 minutes min.

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. Protective holster.

Meter Safety

Terms as Marked on Equipment.

ATTENTION – Refer to manual.
DOUBLE INSULATION – Protection Class I.
DANGER – Risk of electric shock.

Symbols in this Manual：

This symbol indicates where cautionary or other information is found in the manual.
FUSE
Battery

Front Panel

Refer to Figure 1 and to the following numbered steps to familiarize yourself with the meter’s front panel controls and connectors.

1. Digital Display – The digital display has a 3400 counts LCD readout with 65 segments analog bar graph, auto polarity, decimal point, 「 」 AC, LOΩ, RANGE, HOLD and unit annunciators.
2. Rotary Switch – Select the Function and Range desired.
3. COM Input Terminal – Ground input connector.
4. V Input Terminal – Positive input connector for Volts, Ohms and Diode.
5. HA mA Input Termina – Positive input connector for Amp measurements (up to 320mA).
6. A Input Terminal – Positive input connector for Amp measurements (up to 20A).
7. Range Switch, (Manual Range) – “Range” switch is pushed to select manual ranging and to change ranges. When “Range” switch is pushed once “RANGE” anunciator on the LCD is appeared.Push “RANGE” switch to select appropriate range to be used. Push “RANGE” switch and hold 2 seconds to return to Autoranging.
8. AC / DC / / Selection Switch – Push the switch to measure AC Current or DC Current in the current  mode or to measure continuity or diode in / mode.
9. Hold Switch – This switch is used to hold measured value for all functions, and then “HOLD” annunciator is displayed. Conversions are made but the display is not updated.
10. DELAY Switch – This switch is used to delay hold the measured value. The “HOLD” zis displayed after push the「DELAY 」switch about 6 seconds. Push “HOLD” switch to cancel display hold or push「DELAY 」switch after 6 seconds the display hold is canceled. Conversions are made but the display is not updated. The beep will sound when push the HOLD Switch or after about 6 seconds the beep will sound when push the「DELAY  」Switch.
    

SPECIFICATIONS

General Specifications

Display : The Liquid Crystal Display (LCD) with a maximum reading of 3200 and 65 segments bar graph.
Polarity Indication : Automatic, positive implied, negative indicated.
Overrange Indication : “OL” or “-OL”.
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 : Approx 10 minutes.
Operating Ambient : 0°C to 500°C, O to 80% R.H.
Storage Temperature : -200°C to 60°C , 0 to 80% R.H. when battery removed from meter.
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 700 hours.
Dimensions (W x H x D) : 84mm x 175mm x 31mm without holster.
95mm x 192mm x 50mm with holster.
Accessories : Protective Holster, battery, operators manual.

Environmental Conditions

Indoor use.

Pollution Degree : 2
Maximum Altitude : 2000 Meter.
Installation Category : IEC 1010, 1000V Cat. II, 600V Cat. IlI.

Electrical Specifications

Accuracy is ± (% reading + number of digits) at 23°C + 5°C at less than 80% R.H.

(1) DC Volts

2dgt)

| 1000V rms
3V| 1 mV
30V| 10mV
300V| 100 mV
1000V| 1V

Input Impedance : 10MΩ

(2) AC Volts

40Hz to 500Hz

300V| 100mV
750V| 1V

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

(3) DC Current

* 20A Range : 30 seconds maximum above 10A input.
Overload Protection : 1A (500V) fast blow fuse for µAmA input.
16A (500V) fast for A input.

(4) AC Current

* Frequency* Response : 40Hz~ 500Hz.
20A Range : 30 seconds maximum above 10A.
Overload Protection :** 1A (500V) fast blow fuse t for µAmA input.
16A (500V) fast for A input.
* AC Conversion Type : Average Sensing rms indication.

(5) Resistance

Open circuit Voltage : 1.3V approx.

(6) Diode Check and Continuity

Range| Resolution| Accuracy| Max.Test Current| Max.Open Circuit Voltage
---|---|---|---|---
| 1mV| ±(1.5%rdg + 5dgt)*| 1.5mA| 3.3V

• for 0.4 to 0.8V
  Overload protection : 600Vrms max.
  Continuity : Built in-buzzer sound when resistance is less than 30Ω

(7) Auto Power Off

The meter will automatically shut itself off after approximately 10 minutes after power on.
The meter can be turned back on by pushing “Power Reset” key switch.

(8) Beep Guard

The beep will sound if the test lead is connected to the µAmA (10A) input terminal but the rotary function selector is not in the pAmA (10A) positions.

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 instrumnent in safe condition.

Preparation and Caution before Measurement

1. Before measurement, warm up for at least 60 seconds.
2. When the rotary function selector is changed during measurement , be sure do so only after removing the test leads from the equipment.
3. If the equipment is used near noise generating equipment, be aware that display may become unstable or indicate large errors.
4. Maximum rated voltage to earth for voltage and current measurements terminals is 1000V AC / DC CAT. II .

Voltage Measurements

1. Connect the red test lead to the “  ” input terminal and the other (black) test lead to the “COM” terminal.
2. Set the rotary function to the ACV or DCV position.
3. Connect the test leads to the device to be measured.

WARNING

TO AVOID ELECTRICAL SHOCK , HAZARD OR DAMAGE TO METER , DO NOT A ATTEMPT TO MEASURE VOLTAGE THAT MIGHT EXCEED 1000 VOLT DC OR 750 VOLT AC . DO NOT APPLY MORE THAN 1000V DC OR AC RMS BETWEEN THE COMMON INPUT TERMINAL AND EARTH GROUND.

NOTICE : UNSTABLE DISPLAY MAY OCCUR ESPECIALLY AT 300mV RANGE , EVEN THOUGH YOU DON’TPUT TESTED LEADS INTO INPUT TERMINALS. IN THIS CASE , IF AN ERRONEOUS READING IS SUSPECTED, SHORT THE “ ” TERMINAL AND THE “COM” TERMINAL, AND MAKE SURE THE ZERO DISPLAY

Current Measurement

1. Connect the red test lead to “µAmA” terminal and the other (black) test lead to “COM” terminal, or use the “A” and “COM” terminal in the 20A range.
2. Set function selector rotary switch to “µA” or “mA” or “A”.
3. Measurement of AC current can be performed by pushing the “AC/DC” switch.
4. Connect the test leads to the circuit to be measured.

Resistance Measurement

1. Connect the red test lead to the ” V Ω ” terminal and the other (black) test lead to the “COM” terminal.
2. Set the rotary function selector to “Ω” position to measure the resistance.
3. For correct reading , ensure that the device being tested contains no voltage.
4. Connect the test leads across the resistor to be measured. In order to ensure the best accuracy in measurement of low resistance, short the test leads before measurement and memory the test probe resistance in mind. This necessary to subtract for the resistance of the test leads themselves.

Continuity Check by Buzzer

1. Connect the red test lead to the “ ” terminal and the other (black) test lead to the “COM” terminal.
2. Set the rotary function selector to ” ” position.
3. Connect the test leads to the circuit to be measureu .
   The biszzer will sound if the resistance of the circuit measured is lower than 30g.

Diode Check

1. Set the rotary switch at ” ” position.
2. Connect black test lead to “COM” terminal and red lead to ” ” input terminal.
3. Connect test leads to the diode normally the forward voltage drop of good silicon diode is shown between 400V to 900V. 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 defective ”000″ or other value are to be displayed.

MANTENANCE

WARNING

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

General Maintenance

1. Repairs or servicing not converted in this manual should only be performed by qualified personal.
2. Periodically wipe the case with a dry cloth and detergent do not use abrasives or solvents.

Battery Installation or Replacement

The meter is powered by one 9V battery. Refer to Figure 2A and use the following procedure to replace the battery;

1. Disconnect the test leads and turn the meter off.
   Remove the test leads from the front terminals.

2. Position the meter face down. Remove the three screws from the case bottom.

3. Lift the end of the case bottom unit it gently unsnaps from the case top at the end nearest the LCD.

4. Lift the battery from the case top, and carefully disconnect the battery connector leads.

5. Snap the battery connector leads to the terminals of a new battery and reinsert the battery into the case top. Make sure that the battery leads do not become pinched between the case bottom and case top.

6. Replace the case top and case bottom. Make sure that all gaskets are properly seated and the two snaps on the case top are engaged. Reinstall the three screws.

Fuse Replacement

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

1. Perform steps 1 though 3 of the battery replacement procedure.
2. Lift the circuit board from case top. Do not remove the screws from the circuit bead.
3. Remove the defective fuse by gentry prying one end of the fuse loose and sliding the fuse out of the fuse holder.
4. Install a new fuse of sare size and rating. Make sure the new fuse is centered in the fuse holder.
5. Make sure that the case top rotary switch and circuit board switch both are in the OFF position. Notice the pointing direction of the case top rotary switch and circuit board switch are not at same direction.
6. Replace the case top and case bottom. Make sure that all gaskets are properly seated and the battery leads do not become pinched between the case halves, and the two snaps on the case top are engaged. Reinstall the three screws.

Battery Replacement

Fuse Replacement

HOW TO USE THE PROBE HOLDER

• Clip one probe on the holster for one handed meter operation.

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

HOW TO USE THE TILT STAND AND HOLSTER

• Swing the stand out for easier meter reading.

• Swing the upper holder out and hook it over a door.

• Meter in holster face down.

• Hang on a nail at the workbench
  

Limited Warranty

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, Manufacturer will, at its option, replace or repair the defective unit, subject to verification of the defect or malfunction.

This warranty does not cover fuses, 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.

References

• APPA

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