PeakTech 3131eff Digital-AC DC Clamp Meter Instruction Manual

PeakTech 3131eff Digital-AC DC Clamp Meter

Safety Precautions

This product complies with the requirements of the following directives of the European Union for CE conformity: 2014/30/EU (electromagnetic compatibility), 2014/35/EU (low voltage), 2011/65/EU (RoHS).
Overvoltage category II 600V; pollution degree 2.
CAT I: For signal level, telecommunication, electronic with small transient over voltage
CAT II: For local level, appliances, main wall outlets, portable equipment
CAT III: Distribution level, fixed installation, with smaller transient over voltages than CAT IV.
CAT IV: Units and installations, which are supplied overhead lines, which are stand in a risk of persuade of a lightning, i.e. main-switches on current input, overvoltage-diverter, current use counter.
To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuits (arcing), the following safety precautions must be observed. Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.

•  Do not use this instrument for high-energy industrial installation measurement. This instrument is intended for use in installation overvoltage category II.
•  Do not exceed the maximum permissible input ratings of 600V DC/AC (danger of serious injury and/or destruction of the equipment).
•  The meter is designed to withstand the stated max voltages. If it is not possible to exclude without that impulses, transients, disturbance or for other reasons, these voltages are exceeded a suitable pre-scale (10:1) must be used.
•  Disconnect test leads or probe from the measuring circuit before switching modes or functions.
•  Do not conduct current measurements with the leads connected to the V/-terminals of the equipment.
• To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements.
•  Check test leads and probes for faulty insulation or bare wires before connection to the equipment.
• To avoid electric shock, do not operate this product in wet or damp conditions. Conduct measuring works only in dry clothing and rubber shoes, i. e. on isolating mats.
• Never touch the tips of the test leads or probe.
• Comply with the warning labels and other info on the equipment.
•  Always start with the highest measuring range when measuring unknown values.
• Do not subject the equipment to direct sunlight or extreme temperatures, humidity or dampness.
•  Do not subject the equipment to shocks or strong vibrations.
• Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
•  Keep hot soldering irons or guns away from the equipment.
•  Allow the equipment to stabilize at room temperature before taking up measurement (important for exact measurements).
• Do not input values over the maximum range of each measurement to avoid damages of the meter.
•  Do not turn the rotary function switch during voltage or current measurement, otherwise the meter could be damaged.
• Use caution when working with voltages above 35V DC or 25V AC. These Voltages pose shock hazard.
• Replace the battery as soon as the battery indicator “BAT” appears. With a low battery, the meter might produce false reading that can lead to electric shock and personal injury.
• Fetch out the battery when the meter will not be used for long period.
•  Periodically wipe the cabinet with a damp cloth and mid detergent. Do not use abrasives or solvents.
• The meter is suitable for indoor use only
•  Do not operate the meter before the cabinet has been closed and screwed safely as terminal can carry voltage.
• Do not store the meter in a place of explosive, inflammable substances.
•  Do not modify the equipment in any way
• Opening the equipment and service – and repair work must only be performed by qualified service personnel
•  Measuring instruments don’t belong to children hands.

Cleaning the cabinet

Clean only with a damp, soft cloth and a commercially available mild household cleanser. Ensure, that no water gets inside the equipment to prevent possible shorts and damage to the equipment.

 Meter Safety

CAUTION
Note on using the supplied safety test leads according the IEC / EN 61010-031:2008:
Measurements in the field of overvoltage category CAT I or CAT II can be performed with test leads without sleeves with a maximum of up to 18mm long, touchable metallic probe, whereas for measurements in the field of overvoltage category CAT III or CAT IV test leads with put on sleeves, printed with CAT III and CAT IV must be used, and therefore the touchable and conductive part of the probes have only max. 4 mm of length.

Specifications

General Specifications

• Display    (LCD)             3 ¾ Digital Liquid Crystal Display with a maximum reading of 3999
• Polarity                            automatic polarity indicated
• Over range indication  “OL” indicated
• Low Battery Indication  Battery symbols is displayed when the battery voltage drops below the operating voltage
• Measuring rate              2 times/second, normal
• Position Error              ± 1 % of reading
• Type of Sensing           Hall effect sensing for AC and DC current
• Shook Proof               4 feet drops
• Power requirement      Alkaline AAA size 1.5 x 2
• Battery life                  Alkaline 60 hours
• Maximum Jaw opening 25 mm
• Max. conductor size      22 mm diameter
• Temperature coefficient  ,15x (spec. accuracy)/°C <18°C; 28°C for voltage and resistor 0,2x  (spec.  Accuracy)/°C;  <20°C;>26°C for ampere
• Size (WxHxD) / Weight  66 x 192 x 27 mm / 205 g (incl. batteries)
• Accessories                      Test leads, battery, manual and carrying case

 Environmental Conditions

Indoor use

• Maximum Altitude        2.000 Meter
• Installation Category    IEC/EN 61010; CAT II 600 V / CAT III 300 V
• Pollution degree            II
• Operating Temperature  0° C…30° C (< 80 % RH), 30° C…40° C (< 75 % RH), 40° C…50° C (< 45 % RH)
• Storage Temperature      -20° C…60° C

Electrical Specifications

Accuracy is ± (% of reading + number of digits) at 23° C ± 5° C, less than 80 % RH
AC Voltage (auto-ranging)

± 2,0% rdg. +5 dgt /50-60 Hz

4 V| 1 mV| ± 1,5% rdg. +5 rgt / 40- 300 Hz
40 V| 10 mV| ± 1,5% rdg. + 5 dgt / 40-500 Hz
400   V| 100 mV
600   V| 1 V

Over Voltage protection: 600 Vrms
I nput Impedance: > 10 M // less than 100 pF
AC Conversion Type:
AC conversions are AC coupled, true rms responding, calibrated to the rms value of a sine wave input. Accuracies are given for sine wave at full scale. For distorted signals, add the following crest factor corrections:

• for crest factor of 1.4 to 2.0, add 1.0 % to accuracy
• for crest factor of 2,0 to 2,5, add 2,5 % to accuracy
• for crest factor of 2,5 to 3,0, add 4,0 % to accuracy

DC Voltage (auto-ranging)

Over Voltage Protection: 600 Vrms
Input Impedance:         10 M
Resistance (auto-ranging)

Overload Protection: 600 Vrms

1. The reading maybe rolling < 6 digits when the reading is close to full scale
2.  The reading maybe rolling < 3 digits when the reading is close to full scale
3.  The response time is approximate 20 seconds

• Put a low resistor in the input terminal before slide the sliding function switch to resistor and continuity function may be cause a buzzer sound

Continuity
Built-in buzzer sound when resistance is less than 50  and sound off when measured resistance is more than > 300 .
Between 50  to 300  the buzzer maybe sound or off either.
DC A (auto-ranging)

Overload protection: 400 Arms
AC A (auto-ranging)

± 2,0   %   rdg.+5dgt.

40 ~ 200 A| 100 mA
200 ~ 300 A| 100 mA| ± 5,0% rdg.+ 5dgt.

Overload protection: 400 Arms
AC Conversion Type:
AC conversions are AC coupled, true rms responding, calibrated to the rms value of a sine wave input. Accuracies are given for sine wave at full scale. For distorted signals, add the following crest factor corrections:

• for crest factor of 1.4 to 2.0, add 1.0 % to accuracy
• for crest factor of 2,0 to 2,5, add 2,5 % to accuracy
• for crest factor of 2,5 to 3,0, add 4,0 % to accuracy

For DCA & ACA:

1.  Temperature coefficient: 0.2 x (spec. accuracy)/°C < 20°C or 26°C
2. Operating temperature: 0…30°C (< 80 % RH); 30…40°C (<75 %RH)

Maximum Hold:
In the maximum hold function the accuracy is changed as following: Original accuracy + 10 digits/change steps of range
For example:
At first, the maximum hold reading is 100 mV on 400 mV range. A voltage vibration changes the maximum hold reading to 120 V. The change steps of range are 3 steps (400 mV to 4 V to 40 V to 400 V) so the accuracy is needed to add 3 steps x 10 digital/change steps of range = 30 digits.
On maximum hold mode the accuracy of resistance is specified from 400  to 400 k range only.
Auto Power Off
The meter will automatically shut itself off after approximately 30 Minutes after power on.

 Front Panel

1. Digital Display
   The digital display has a 3 ¾ digit LCD readout (max. reading 3999) plus decimal point,, AC, DC, AUTO, HOLD, MAX, continuity 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- input jack when measuring ACV or DCV or resistor or continuity.

3. Drop proof wrist strap

4. Function Switch
   This slide switch is used to select AC V, DC V, AC A, DC A, ,°))) Function.

5. H/MAX Switch
   This switch has two modes, one is data hold the other is maximum hold. Sliding the function switch to power on, this switch will work in data hold mode. Pressing the H/MAX switch then slide the function switch from power off to power on, this switch will work in maximum hold mode.
   Data Hold mode
   This mode is used to hold measured value for all functions, push this switch then HOLD annunciator is displayed. Conversions are made but the display is not updated.
   Maximum Hold mode
   This mode is used to hold the maximum measured value for all functions except continuity mode. Press this switch the “MAX” annunciator turns on then enters the maximum hold mode. Press this switch again to restart recording. Press this switch more than 2 seconds to exit the maximum hold mode.

6. Zero Switch
   This switch is used to zero the reading on display. It work in DC and AC current function only. In zero mode, the reading maybe exceed ± 4000 counts.

7. /AC/DC Selection switch
   Push this switch alternately to measure AC voltage or DC voltage in the V ~ function or to measure AC current or DC current in the A ~ function. or to measure resistor or continuity in /function. Auto power disable mode – press this switch until slide the function switch power on for 1 second it will cause the auto power off function disable.

8. Trigger
   Press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close again.

9. Hand Guard
   Designed to protect user for safety.

10. Transformer Jaws
    Designed to pick up the AC/DC current flowing through the conductor.

Operation

Precautions and Preparations for measurement

•  If the meter is used near equipment that generates electro-magnetic interference, the display may be unstable or indicate incorrect measurement values
• Make sure the battery is properly connected.
• The instrument should only be operated between 0° C…50° C and at less than 80 % R.H. except current function is operated between 0° C…40° C.
•  Do not use or store the 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.
•  Maximum rated voltage to earth for voltage measurement terminals is 600 V CAT. II, 300 V CAT. III.
•  This instrument must not be used on uninsulated conductors at a voltage greater than 600 V AC/DC.

 AC/DC Current Measurement

1.  Set the slide 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 smoothly, do not release quickly, make sure that the clamp is entirely closed. Position the conductors at the center of the clamp jaws for accurate measurement.
   The clamp must be positioned around only one conductors. If the clamp is placed around two or more current-carrying conductors, the meter reading will be FALSE.

4. For DC measurement, the reading is positive value when the current flows from the upper side to the lower side of the instrument as .

5. Using the zero switch to zero the reading. Due to the high sensitivity of the clamp meter, must zero in the same direction as in measurement to avoid interference by external magnetic field.

AC/DC Voltage Measurement

1.  Set the slide switch at V ~ position.
2. Connect the black test lead to the COM terminal and the red test lead to the “V-” terminal. You can now place the probes to the conductors to make the measurement.
3.  Pushing the AC/DC switch to select AC or DC mode.

Resistance Measurement

1. Set the slide switch at “/ °)))” position.
2.  Connect the black test lead to the COM terminal and the red test lead to the V- terminal.
3. Verify that the power to the circuit under test is off. Connect test leads to the circuit to make the measurement.
4. Pushing the /°))) switch to select resistance mode or continuity mode.
5. At continuity mode, built-in buzzer sounds if the resistance of the circuit under test is less than 50 .

Maintenance

WARNING
To avoid electrical shock remove test lead before opening the cover.
Repairs or servicing not covered in this manual should only be performed by qualified personal.

Battery Installation or replacement

The meter is powered by two 1.5 V Alkaline batteries. Refer to Fig. 4 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. Remove the battery cover of case bottom from the instrument by removing the screw and then lifting off battery cover.
3.  Lift the battery from the battery box.
4. Reinsert the battery into the battery box.
5. Replace the battery cover and reinstall the screw.

Statutory Notification about the Battery Regulations
The delivery of many devices includes batteries, which for example serve to operate the remote control. There also could be batteries or accumulators built into the device itself. In connection with the sale of these batteries or accumulators, we are obliged under the Battery Regulations to notify our customers of the following:
Please dispose of old batteries at a council collection point or return them to a local shop at no cost. The disposal in domestic refuse is strictly forbidden according to the Battery Regulations. You can return used batteries obtained from us at no charge at the address on the last side in this manual or by posting with sufficient stamps.

• Batteries, which contain harmful substances, are marked with the symbol of a crossed-out waste bin, similar to the illustration shown left. Under the waste bin symbol is the chemical symbol for the harmful substance, e.g. „Cd“ for cadmium, „Pb“ stands for lead and „Hg“ for mercury.

You can obtain further information about the Battery Regulations from the Bundesministerium für Umwelt, Naturschutz und Reaktorsicherheit (Federal Ministry of Environment, Nature Conservation and Reactor Safety).
All rights, also for translation, reprinting and copy of this manual or parts are reserved.
Reproductions of all kinds (photocopy, microfilm or other) only by written permission of the publisher. This manual considers the latest technical knowing. Technical changings which are in the interest of progress reserved. We herewith confirm that the unit is calibrated by the factory according to the specifications as per the technical specifications. We recommend to calibrate the unit again, after 1 year.
©PeakTech® 07/2021 Th/Ho/Ehr

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