PeakTech 4350 True RMS Clamp Meter User Manual

4350 True RMS Clamp Meter
User Manual True RMS Clamp Meter

Safety Precautions

This product complies with the requirements of the following European Community Directives: 2014/30/EU (Electromagnetic Compatibility) and 2014/35/EU (Low  Voltage) as amended by 2014/32/EC (CE-Marking). Overvoltage category III 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 overvoltages 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.

General:

• Read these operating instructions carefully and make them available to subsequent users.
• It is essential to observe the warning notices on the device, do not cover or remove them.
• Pay attention to the use of the multimeter and only use it in the suitable overvoltage category.
• Familiarize yourself with the functions of the measuring device and its accessories before you carry out the first measurement.
• Do not operate the measuring device unsupervised or only protected against unauthorized access.
• Use the multimeter only for the purpose of its determination and pay particular attention to warning notices on the device and information on the maximum input values.

Electric safety:

• Voltages over 25 VAC or 60 VDC are generally considered dangerous voltages.
• Only work on dangerous voltages by or under the supervision of qualified personnel.
• When working on dangerous voltages, wear suitable protective equipment and observe the relevant safety rules.
• Do not exceed the maximum permissible input values under any circumstances (risk of serious injury and / or destruction of the device)
• Remove the test probes from the measurement object before changing the measuring function.
• Never touch the bare test probes during the measurement, only hold the test leads by the handle behind the finger guard.
• If applicable, discharge any capacitors before measuring the circuit to be measured.
• The thermocouple for temperature measurements is made of conductive material. To avoid electric shock, never connect it with a live conductor.

Measurement environment:

• Avoid any proximity to explosive and flammable substances, gases and dust. An electric spark could lead to an explosion or deflagration – danger to life!
• Do not carry out measurements in corrosive environments, the device could be damaged or contact points inside and outside the device could corrode.
• Avoid working in environments with high interference frequencies, high-energy circuits or strong magnetic fields, as these can negatively affect the multimeter.
• Avoid storage and use in extremely cold, humid or hot environments, as well as long-term exposure to direct sunlight.
• Only use devices in damp or dusty environments in accordance with their IP protection class.
• If no IP protection class is specified, only use the device in dust-free and dry indoor rooms only.
• When working in damp or outside areas, pay particular attention to completely dry handles on the test leads and test probes.
• Before starting the measuring operation, the device should be stabilized at the ambient temperature (important when transporting from cold to warm rooms and vice versa)

Maintenance and Care:

• Never use the device if it is not completely closed.
• Before each use, check the device and its accessories for damage to the insulation, cracks, kinks and breaks. If in doubt, do not take any measurements.
• Change the battery when a battery symbol is displayed to avoid incorrect readings.
• Switch off the multimeter before changing batteries or fuses and also remove all test leads and temperature probes.
• Replace defective fuses only with a fuse that corresponds to the original value. Never short-circuit a fuse or fuse holder.
• Charge the battery or change the battery as soon as the battery symbol lights up. Insufficient battery power can lead to inaccurate measurement results. Electric shocks  and physical damage can result.
• If you are not going to use the device for a longer period of time, remove the battery from the compartment.
• Have maintenance and repair work on the multimeter carried out only by qualified specialists.
• Do not lay the device upside down on the workbench or work surface to avoid damaging the control elements.
• Clean the housing regularly with a damp cloth and a mild cleaning agent. Do not use any caustic abrasives.
• Do not make any technical changes to the device.

1.1. Safety information

| Caution! Refer to accompanying documents.
---|---
Caution! Risk of electric shock.
Equipment protected throughout by double insulation (class II)
Alternating current
Direct current
Ground

Introduction

2.1. Unpacking and inspection
Upon removing your new digital clamp meter from its packing, you should have the following items:
Digital clamp meter, Test lead set; 9-V battery (installed in meter), carrying case, Instruction manual, Thermocouple
If any of the above items are missing or are received in a damaged condition, please contact the distributor from whom you purchased the unit.

Specifications

Display| 3 4/5-digits, 14 mm large LCD, maximum reading 4999 with function and units sign annunciators; 51 segment analogue bar graph
---|---
Polarity indication| Automatic, positive implied, negative indicated
Overrange Indication| “OL” is displayed
Low battery Indication| Battery symbol is displayed when the battery voltage drops below accurate operating level
Display update Rate| 2/Sec nominal and 20/sec analog display
Auto Power off| 30 minutes
Operating environment| -10°C … +50°C (-14°F …+120°F); <80% RH
Storage environment| -20°C … +60° C (-4°F …+140°F); <80% RH with battery removed from meter
Altitude| 3000 m
Power| 2 x 1,5 V AAA Batteries (UM-4)
Jaw opening Capability| 19 mm conductor
Size (HxWxD)| 75 x 220 x 37 mm
Weight| 240 g

3.1. Maximum input values

DC/AC
Temperature (°C/°F)| 250 V DC/AC

Specifications

DC Volts

Ra nges

|

Res olution

|

A c c uracy

---|---|---
500mV| 100  µV|  0,8% rdg. + 5 dgt.
5    V| 1 mV| 1,0% rdg. + 3 dgt.
50    V| 10 mV
500    V| 100 mV
600    V| 1    V|  2,0% rdg. + 3 dgt.

Overload protection: 600V DC/ACrms
Input Impedance: 10 MΩ

AC Volts (True RMS)

Ra nge| Res olution|

A c c uracy

---|---|---
500 mV| 100  µV|  1,0% rdg. + 15 dgt.
5    V| 1 mV| 1,5% rdg. +   5 dgt.
50    V| 10 mV
500    V| 100 mV
600    V| 1    V|  2,0% rdg. +   8 dgt.

Overload protection: 600 V DC/ACrms
Frequency range: 50 ~ 400 Hz
Input Impedance: 10 MΩ

DC Current

Ra nge

| Res olution|

A c c uracy

---|---|---

5000 mA

| 1 mA|  2,8% v.M. + 30 dgt.
80 A| 100 mA|

 3,0% v.M. +   8 dgt.

Overload protection: 80 A

AC Current (True RMS)

Ra nge

| Res olution|

A c c uracy

---|---|---
5000 mA| 1 mA|  2,8% v.M. + 25 dgt.
80  A| 100 mA|  3,0% v.M. +   8 dgt.

Overload protection: 80 A
Frequency range: 50/60 Hz

Resistance

Capacitance

Overload protection: 250 V AC/DC

Frequency

Ra nge| Res olution| A c c uracy| S e nsitivity
---|---|---|---
5    Hz| 1 mHz| 1,2% v.M. + 3 dgt.| >15Veff
50    Hz| 10 mHz
500    Hz| 100 mHz
5 kHz| 1    Hz
50 kHz| 10    Hz
500  kHz| 100    Hz
5 MHz| 1 kHz
10 MHz| 10 kHz| 1,5% v.M. + 3 dgt.

Overload protection:  250 V AC/DC

Temperature

Ra nge

| Res olution|

A c c uracy

---|---|---
-20 … + 760°C| 0,1°C|  2,0% rdg. + 3°C
–  4… +1400°F| 0,1°F|  2,0% rdg. + 3°C

Overload protection:  250 V DC/ACrms

Continuity

Overload protection:  250 V DC/ACrms

Diode test

Instrument Layout

1. Current Clamp
2. Clamp Trigger
3. MODE-button
4. LCD-display
5. Backlight
6. V/Ω/Hz/Temp – input socket
7. DATA-HOLD/Backlight – button
8. Button for MIN/MAX and Relative measuring function
9. Rotary function switch
10. Button for measuring point illumination
11. Lamp of the measuring point illumination

COM Terminal
This is the negative (ground) input for all measurement modes except current. Connection is made to it using the black test leads.
V/Hz/Ω Input Terminal
This is the positive input terminal for voltage, capacitance, frequency, ohms and diode measurements. Connection is made to it using the red test lead.
Display
The display indicates the measured value of a signal, function mode symbols and bargraph.
Function/Range selector rotary switch
This rotary switch selects the function and selects the desired range (current measurements).
Hold/Backlight Button
The Hold / Backlight key is used to activate the data hold function by pressing the key once. The current measured value is retained in the display until the button is pressed  again. Keep the button pressed for a 2 seconds and the backlight of the LCD display is activated. This turns off automatically after about 20 seconds.
MIN/MAX Key
The Min / Max key is used to activate the minimum or maximum value holding function. Press the button once to hold only the highest reading in the display. If this value  falls, still the highest indication remains on the display. Press it again to keep the smallest reading in the display. If this reading increases during the measurement again, still the minimum value remains in the display.
REL- Button
Press ZERO button to enter the relative mode, the ZERO  annunciator turns on, zero the display and store the displayed reading as a reference value. Press and hold down  the ZERO button for 2 seconds to exit the relative mode.
In the relative mode the value shown on the LCD is always The difference between the stored reference value and the present reading. For example, if the reference value is  24.000 V and the present reading is 12,50 V the display will indicate –11,50 V. If the new reading is the same as the reference value, the display will be zero. This feature also is  made as DCA ZERO adjustment.
Transformer jaws
Pick up the AC or DC current flowing through the conductor.
Trigger
Press the lever to open the transformer. When the lever is released, the jaws will close again.

How to make measurements

Before making any measurements read safety precautions.
Always examine the instrument and accessories used with the instrument for damage, contamination (excessive dirt, grease, etc) and defects. Examine the test leads for  cracked or frayed insulation and make sure the lead plugs fit snugly into the instrument terminals. If any abnormal conditions exist, do not attempt to make any  measurements.

6.1. Voltage measurements

1. Turn off power to the device under test and discharge all capacitors.
2. Plug the black test lead into the COM input jack on the meter and connect the test lead tip to a grounded point (the reference point for measurement of voltage).
3. Select the voltage measurement position (V ) with the function switch.
4. Select AC or DC voltage by pressing the MODE-button.

WARNING!
To avoid possible electric shock, instrument damage and/or equipment damage, do not attempt to take any voltage measurements if the voltage is above 600 V AC/DC are  the maximum voltages that this instrument is designed to measure.
The “COM” terminal potential should not exceed 600 V measured to ground.

1. Plug the red test lead into the V/Ω-Input jack on the meter and connect the circuit where a voltage measurement is required. Voltage is always measured in parallel  across a test point.
2. Turn on power the circuit/device to be measured and make the voltage measurement reduce the range setting if set too high until a satisfactory reading is obtained.

6.2. Current Measurements
WARNING! These Snap-arounds are designed to take current measurements on circuits with a maximum voltage difference of 240 V AC between any conductor and  ground potential. Using the snap-around for current measurements on circuits above this voltage may cause electric shock, instrument damage and/or damage to the  equipment under test. Before measuring current make certain that the test leads are removed from the instrument.
The snap-around is overload protected up to 240 V AC for up to 1 Min. Do not take current readings on circuits where the maximum current potential is not known. Do not  exceed the maximum current that this instrument is designed to measure.

1. Set Function Switch to mA or A position.

2. Select the AC or DC-function by pressing the MODE-button.
   If you want to measure DCA, press the REL-button to set the display to 00.00.

3. Press the trigger to open the transformer jaws and clamp them around a conductor. Jaws should be completely closed before taking a reading.

4. The most accurate reading will be obtained by keeping the conductor across centre of the transformer jaws.

5. The reading will be indicated on the display.

6. Reduce the range setting if too high until a satisfactory best resolution reading it obtained.

6.3. Resistance measurements

WARNING! Attempting resistance or continuity measurements on live circuits can cause electric shock, damage to the instrument and damage to the equipment under test.  Resistance measurements must be made on de-energized circuits only for maximum personal safety. The electronic overload protection installed in this instrument will reduce  the possibility of damage to the instrument but not necessarily avoid all damage or shock hazard.

1. Turn off any power to the resistor to be measured. Discharge capacitors. Any voltage present during a resistance measurement will cause inaccurate readings and could damage the meter if exceeding the overload protection of 250 V DC or AC.
2. Insert the black and red test leads into the COM and V/Ω input terminals respectively.
3. Select the desired ohm (Ω) range.
4. Select Ω by pressing MODE-button
5. Connect the black and red test probe tips to the circuit or device under test, making sure it is de-energized first.
6. Open circuits will be displayed as an overload condition (OL)
7. Test lead resistance can interfere when measuring low resistance readings and should be subtracted from resistance measurements for accuracy. Select lowest resistance  range and make the test leads short together. The display value is the test lead resistance to be subtracted.
8. After completing measurement, disconnect the test leads.

6.4. Continuity testing

CAUTION!
Measurements must only be made with the circuit power OFF.

1. Select the Ω/ ))) position by turning the rotary selector switch.
2. Select °))) by pressing MODE-button.
3. Follow step 2 and 5 as for resistance measurements.
4. An audible tone will sound for resistance less than approx. 50 Ω. After all measurements are completed, disconnect the test leads from the circuit and from the input terminals.

Diode testing
CAUTION!
Measurements must only be made with the circuit power OFF.

1. Set the rotary selector switch to the Ω/ ))) position.
2. Select by pressing MODE-button
3. Follow steps 2 and 5 as for resistance measurements.
4. The red test lead should be connected to the anode and the black lead to the cathode. For a silicon diode, the typical forward voltage should be about 0,7 V or 0.4 V for a germanium diode.
5. If the diode is reverse biased or there is an open circuit the display shows “OL”.

6.6. Capacitance measurement

CAUTION!
Measurements must only be made with the circuit power OFF.
WARNING!
Capacitors can be carry very high voltages. Before measurement discharge the capacitor. To measure a charged capacitor could damage the clamp meter.

1. Turn off power to the device under test and discharge all capacitors.

2. Discharge all voltage from the capacitor before measuring its capacitance value.
   Note: A safe way to discharge a capacitor is to connect a 100 kΩ resistor across the two capacitor leads.

3. Set the rotary selector switch to the capacitance range (CAP).

4. Plug the black and red test leads into the COM and V/Ω input terminals respectively.

5. Touch the probes to the capacitor. Always observe polarity makings when measuring prized capacitors.
   Note:
   Capacitors with residual voltage and capacitors with poor insulation resistance affect a negative test result.

6. Read capacitance value directly from the display.

7. After completing the measurement, disconnect the test leads from the instrument.

6.7. Frequency measurements

1. Set the rotary selector switch to the Hz position.
2. Plug the black and red test leads into the COM and Hz input terminals respectively.
3. Determine that the amplitude level of the signal to be measured is not greater than the input voltage limit (250 V AC/DC). The signal amplitude must also be greater  than the sensitivity level.
4. Attach the probe tips to the points across which the frequency is to be measured, and read the result directly from the display.
5. Disconnect the test leads from the instrument.

6.8. Temperature measurements

1. Set the function switch to °C/°F position. The meter automatically defaults to °C range.
2. Insert the meter´s white temperature adaptor into the V/Ωinput terminal and the COM-terminal. Ensure that the minus marking at the adaptor is inserted into the  COM-terminal and the plus-marking is inserted into the V/Ω-input terminal.
3. To change the measuring unit from °C to °F press the MODE button to select the °F unit.
4. Connect the K-type probe into the meter adaptor and measure the temperature of the apparatus or area required.
5. Read the temperature directly from the display.

Replacing the battery

WARNING!
To avoid electrical shock, disconnect the test leads and any input signals before replacing the battery. Replace only with same type of battery.
This meter is powered by 2 x 1,5 V AAA batteries. When the meter displays the battery symbol the batteries must be replaced to maintain proper operation. Use the following  procedure to replacing the battery.

1. Disconnect test leads from any live source, turn the rotary switch to OFF and remove the test leads from the input terminals.
2. The battery cover is secured to the bottom case by a screw. Using a screwdriver, remove the screw from the battery cover and remove the battery cover.
3. Remove the batteries and replace with new equivalent batteries.
4. Replace the battery cover and reinstall the screw.

Note: Batteries which are used up, dispose duly. Used up batteries are hazardous and must be given in the for this being supposed collective container.

7.1. Notification about the Battery Regulation
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.
Contaminated batteries shall be marked with a symbol consisting of a crossed- out refuse bin and the chemical symbol (Cd, Hg or Pb) of the heavy metal which is responsible  for the classification as pollutant:

1. “Cd” means cadmium.
2. “Hg” means mercury.
3. “Pb” stands for lead.

Maintenance

Maintenance consists of periodic cleaning and battery replacement. The exterior of the instrument can be cleaned with a dry clean cloth to remove any oil, grease or grime.  Never use liquid solvents or detergents.
Repairs or servicing not covered in this manual should only be performed by qualified service personnel.
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 units are calibrated by the factory according to the specifications as per the technical specifications.
We recommend to calibrate the unit again, after 1 year.
© PeakTech® 05-2021 MP/Mi/EHR

PeakTech Prüf – GmbH – Gerstenstieg 4
DE-22926 Ahrensburg / Germany
+49-(0) 4102-97398 80 +49-(0) 4102-97398 99
info@peaktech.de www.peaktech.de

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