APPA 33II Digital Clamp Meter User Manual

: June 10, 2024
: APPA

Table of Contents

APPA 33II Digital Clamp Meter
Product Information
Product Usage Instructions
INTRODUCTION
SPECIFICATIONS
OPERATION
MAINTENANCE
Limited Warranty
ABOUT COMPANY

APPA 33II Digital Clamp Meter

APPA-33II-Digital-Clamp-Meter-fig-1

Product Information

The 33II digital clamp meter is a state-of-the-art measuring instrument designed for measuring AC voltage, AC current, and resistance. It has a 3 1/2 digit LCD display with a maximum reading of 1999 and a measuring rate of 4 times per second. The meter is shockproof, can withstand drops of up to 4 feet, and has a maximum jaw opening of 42mm. It operates on alkaline batteries and has a battery life of up to 400 hours. The meter comes with a carrying case, test lead set, battery, and instruction manual.

Product Usage Instructions

Unpacking and Inspection

When you receive the 33II digital clamp meter, unpack it carefully and make sure you have the following items:

Digital clamp meter
Carrying case
Instruction manual
Test lead set (one black, one red)

Meter Safety

The meter has several safety terms marked on it, including
ATTENTION, DOUBLE INSULATION, and DANGER. Make sure you refer to the manual for proper usage instructions.

Front Panel

The front panel of the meter has several controls and connectors:

Digital Display – This shows the measurement readings.
Input Terminal – The black test lead is always connected to the COM input jack and red test lead is always connected to the V- input jack when measuring ACV and OHMS.
Function Switch – Rotate to desired function.
Data Hold Switch – Hold display reading for all functions and ranges.
Trigger – Press the lever to open the transformer jaws.
Transformer Jaws – Designed to pick up the AC current flowing through the conductor.
Hand Guard – Designed to protect user for safety.
Battery Cover
Battery Cover Screw

Specifications

The 33II digital clamp meter has the following specifications:

Display: 3 1/2 Digital Liquid Crystal Display (LCD) with a maximum reading of 1999
Overrange Indication: 1 indicated, show the real value for V function and 600A range of A function
Measuring Rate: 4 times per second, nominal
Low Battery Indication: is displayed when the battery voltage drops below the operating voltage
Battery Life: Alkaline 400 hours
Shock Proof: 4 feet drops
Maximum Jaw Opening: 42mm
Maximum Conductor Size: 40mm diameter
Size: 200mm (W) x 76mm (L) x 41mm (H)
Weight: 360gms (including battery)
Accessories: Test leads, battery, manual, and carrying case

Electrical Specifications

The meter has the following electrical specifications:

AC Voltage: Auto-ranging with a range of 600V and an accuracy of +/-1% +/-5dgt. Overload protection up to 800A.
AC Current: Auto-ranging with a range of 200A or 600A and an accuracy of +/-1.9% +/-5dgt. Overload protection up to 800A.
Resistance: Auto-ranging with a range of 2000 and an accuracy of +/-1% +/-2dgt. Max. open circuit voltage protection up to 3V and overload protection up to 800A.
Instant Continuity Description: Built-in buzzer sound when resistance is less than approximately 50.
Data Hold: Hold display reading for all functions and ranges.
Auto Power Off: Once the Clamp-On meter is powered on, a timer is activated which will turn the unit off after approximately 30 minutes. If you wish to continue marking measurements after the unit automatically powers off, you must switch the function selector to OFF and then back to the desired function.

INTRODUCTION

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

Digital Clamp meter.
Carrying case.
Instruction manual.
Test lead set (one black, one red).

Meter Safety

Terms as Marked on Equipment
- ATTENTION – Refer to manual.
- DOUBLE INSULATION – Protection Class II
- DANGER – Risk of electric shock.
Symbols in this Manual.

APPA-33II-Digital-Clamp-Meter-fig-2

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

APPA-33II-Digital-Clamp-Meter-fig-4

Digital Display — The digital display has a 3 1/2 digit LCD readout (maximum reading 1999) plus auto polarity, decimal point, and .
Input Terminal — The black test lead is always connected to the “COM” input jack and red test lead is always connected to the “V-Ω” input jack when measuring ACV and OHMS.
Function Switch — Rotate to desired function.
Data Hold Switch — Hold display reading for all functions and ranges.
Trigger — Press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close again.
Transformer Jaws — Designed to pick up the AC current flowing through the conductor.
Hand Guard — Designed to protect user for safety.
Battery Cover.
Battery Cover Screw.

SPECIFICATIONS

General Specifications

Display : 3 1/2 Digital Liquid Crystal Display (LCD) with a maximum reading of 1999.
Overrange Indication : “1” indicated, show the real value for “V” function and 600A range of “A” function. Measuring Rate : 4 times per second, nominal.
Low Battery Indication : is displayed when the battery voltage drops below the operating voltage.

Environmental Conditions
Indoor Use.

Maximum Altitude : 2000 meter.
Installation Category : IEC 1010 600V Cat. III
Pollution Degree : 2
Operating Ambient : 0°C to + 45°C (below 75% R.H.) Storage Temperature : -20°C to + 60°C (below 80% R.H.) with battery removed.
Temperature Coefficient : 0.2 x (Spec.Acc’y) / °C , < 18 °C or > 28°C.
Power Requirement : Single 9V battery (NEDA 1604,IEC 6F22)
Battery Life : Alkaline 400 hours.
Shock Proof : 4 feet drops.
Maximum Jaw Opening : 42mm
Maximum Conductor Size : 40mm diameter.
Size : 200mm (W) x 76mm (L) x 41mm (H)
Weight : 360gms (including battery)
Accessories : Test leads, battery , manual and carrying case.

Electrical Specifications
Accuracy is ±(%reading + number of digits) at 23 °C ± 5 °C , less than 75% R.H.

**AC Voltage : Auto-ranging

APPA-33II-Digital-Clamp-Meter-fig-5

**

  *  **AC Conversion Type :** Average Sensing rms indication.
  *  **Crest Factor :** 2 to 3 , add 1.4% to Accuracy. 3 to 4 , add 3% to Accuracy.
  *  **Input impedance :** 2MΩ // 2nF approx.

**AC Current : Auto-ranging

APPA-33II-Digital-Clamp-Meter-fig-6

**

  *  **AC Conversion Type :** Average Sensing rms indication.
  *  **Crest Factor :** 2 to 3 , add 1.4% to Accuracy.

3 to 4 , add 3% to Accuracy.

**Resistance : Auto – ranging

** APPA-33II-Digital-Clamp-Meter-fig-7

Instant Continuity Description :
Built – in buzzer sound when resistance is less than approximately 50Ω .
Data Hold :
Hold display reading for all functions and ranges.
Auto Power Off :
Once the Clamp-On meter is powered on, a timer is activated which will turn the unit off after approximately 30 minutes. If you wish to continue marking measurements after the unitautomatically powers off, you must switch the function selector to “OFF” and then back to the desired function.

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.

Precautions and Preparations for measurement

Make sure that the battery is properly connected.
The instrument should only be operated between 0°C~45°C and at less than 75% R.H.
Do not use or store this instrument in a high temperature or high humidity environment and do not store the unit in direct sunlight.
Do not replace battery with power on condition.
If the unit is not to be used for a long period of time, remove the battery.
Do not forget to turn off after use.
If the meter is used near equipment that generates electromagnetic noise, the display may be unstable or indicate large errors.
Maximum rated voltage to earth for voltage measurements terminals is 600V CATIII.
When using the instrument as a Voltmeter or ohmmeter never clamp the jaws around or onto a conductor.
THIS INSTRUMENT MUST NOT BE USED ON UNINSULATED CONDUCTORS AT A VOLTAGE GREATER THAN 600V ac/dc.

AC Current Measurement

Set the function switch at desired current position.
Open Spring-loaded clamp by pressing trigger on right side of meter.
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 conductors of a circuit . If the clamp is placed around two or more current carrying conductors, the meter reads FALSE.

AC Voltage Measurement

Set the function switch at ” V ~ ” position.
Connect the black test lead to the “COM” terminal and the red test lead to the ” V-Ω” terminal.
You can now place the test probes on the conductors to make the measurement.

Resistance Measurement

1. Set the function switch at ” Ω ” position.
Connect the black test lead to the “COM” terminal and red test lead to the ” V– Ω ” terminal.
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 approximately 50Ω.

MAINTENANCE

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

General Maintenance

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

Battery Replacement
WARNING :
Before opening the battery cover, remove the test leads (or jaw) from the circuit and shut off the unit.

Disconnect the unit from the circuit. Turn the unit OFF.
Remove the battery cover screw.
Remove the battery cover.
Replace the battery (observe polarity).
Replace the cover and the screw.

APPA-33II-Digital-Clamp-Meter-fig-8

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.