PCE Instruments PCE-LCT 3 Manual de usuario

PCE-LCT 3 Clamp Meter

User Manual

User manuals in various languages (français,

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Last change: 6 April 2020

v1.0

English

 
 © PCE Instruments 
 
 
Contents 
1Safety notes........................................................................................... 1 
2Lieferumfang ......................................................................................... 2 
3Specifications........................................................................................2 
4Device description ................................................................................ 5 
4.1 Keys and connections...................................................................................................... 6 
4.2 Display description........................................................................................................... 6 
5Key functions ........................................................................................6 
5.1 Hold reading..................................................................................................................... 6 
5.2 Low pass filter 50 Hz / 60 Hz current selection................................................................. 7 
5.3 Determine lowest and highest reading.............................................................................. 7 
6Set zero point (current measurement)................................................ 7 
6.1 Changing measuring functions and units.......................................................................... 7 
6.2 Auto Power Off function ................................................................................................... 7 
7Measurement......................................................................................... 7 
7.1 Current measurement (current clamp).............................................................................. 7 
7.2 Voltage measurement...................................................................................................... 8 
7.3 Resistance measurement, continuity and diode test......................................................... 8 
8Replacing the batteries ........................................................................8 
9Warranty.................................................................................................9 
10 Disposal ................................................................................................. 9 
 
 
 

1 Safety notes

Please read this manual carefully and completely before you usethe device for the first time. The

device may only be used by qualified personnel and repaired by PCE Instruments personnel.

Damage or injuries caused by non-observance of the manual are excluded from our liability and

not covered by our warranty.

•The device must only be used as described inthis instructionmanual. If used otherwise,

this can cause dangerous situations for the user and damage to the meter.

•The instrument may only be used if the environmental conditions (temperature, relative

humidity, …) are within the ranges stated in the technical specifications. Do not expose

the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

•Do not expose the device to shocks or strong vibrations.

•The case should only be opened by qualified PCE Instruments personnel.

•Never use the instrument when your hands are wet.

•You must not make any technical changes to the device.

•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

•The device must only be used with accessories from PCE Instruments or equivalent.

•Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

•Do not use the instrument in explosive atmospheres.

•The measurement range as stated in the specifications must not be exceeded under

any circumstances.

•Non-observance of the safety notes can cause damage to the device and injuries to

the user.

•Never touch live components when making a measurement. There is risk of death!

•Never touch the bare tips of the measuring tips as this can cause electric shock.

•Before making a measurement, make sure you have selected the correct measuring

function and that the test leads are connected correctly.

•Resistance, capacitance and temperature measurements as well as diode tests (if

diodes are present) may only be carried out when no voltage is present.

•Before replacing the batteries or fuses, all test leads must be disconnected from the

meter.

We do not assume liability for printing errors or any other mistakes in this manual.

We expressly point to our general guarantee terms which can be found in our general terms of

business.

If you have any questions please contact PCE Instruments. The contact details can be found at

the end of this manual.

2 Lieferumfang

1 x clamp meter PCE-LCT 3

1 x transport bag

1 x K-type thermocouple

1 x pair of test leads

2 x 1.5 V AAA batteries

1 x user manual

3 Specifications

AC current measurement

measuring range

Resolution

Accuracy

4-mA

0.001mA

± (2% + 10 digits)

± (3% + 5 digits)

40-mA

0.01mA

± (2% + 10 digits)

± (3% + 5 digits)

400-mA

0.1mA

± (2% + 5 digits)

± (3% + 3 digits)

4 A

0.001 A

± (2% + 5 digits)

± (3% + 3 digits)

40 A

0.01A

± (2% + 10 digits)

± (3% + 5 digits)

150 A

0.1 A

± (2% + 10 digits)

± (3% + 5 digits)

Frequency range: 40 Hz ... 1 kHz (sine wave)

Maximum input current: 150 A AC

DC voltage

measuring range

Resolution

Accuracy

0.001V

± (0.5% + 4 digits)

40V

0.01V

400V

0.1V

600V

Input impedance: 10 MΩ

Maximum input voltage: 600V AC / DC RMS

AC voltage

measuring range

Resolution

Accuracy

0.001V

± (1% + 3 digits)

40V

0.01V

400V

0.1V

600V

Input impedance: 10 MΩ

maximum input voltage: 600V AC / DC RMS

Frequency range: 40 Hz ... 1 kHz (sine wave)

Resistance

measuring range

Resolution

Accuracy

400 Ω

0.1 Ω

± (0.8% + 3 digits)

4 kΩ

0.001 kΩ

40 kΩ

0.01 kΩ

400 kΩ

0.1 kΩ

4 MΩ

0.001 MΩ

40 MΩ

0.01 MΩ

± (1% + 3 digits)

Measuring voltage in open circuit: approx. 0.4V

Overvoltage protection: 600V AC / DC RMS

Continuity test

measuring range

Resolution

Accuracy

Beep at < 40 Ω

0,1Ω

Overvoltage protection: 600V AC / DC RMS

Temperature

measuring range

Resolution

Accuracy

-20 ... 0°C

1°C

± (3% + 5 digits)

-4 ... 32°F

1°F

-0 ... 400°C

1°C

± (1.5% + 5 digits)

32 ... 757°F

1°F

400 ... 1000°C

1°C

± (3% + 5 digits)

752 ... 1832°F

1°F

Overvoltage protection: 600V AC / DC RMS

The temperature accuracies do not include the accuracies of the temperature sensors

Capacitance

measuring range

Resolution

Accuracy

40.00 n

0.01 nF

± (3% + 8 digits)

400.0 nF

0.1 nF

4,000 μF

0.001 μF

40.00 μF

0.01 μF

400.0 μF

0.1 μF

4,000mF

0.001 μF

40.00 mF

0.01 μF

Overvoltage protection: 600V AC / DC RMS

Diode test

measuring range

Resolution

Accuracy

3.2V

0.001V

Overvoltage protection: 600V AC / DC RMS

Test voltage: 3.2V

Forward current: 1-mA

The accuracies refer to the following ambient conditions: 23 ± 5°C / 9°F and < 75% RH

General specifications

Maximum current clamp opening

30 mm

Automatic shutdown

After 30 minutes, can be deactivated

Power supply

2 x 1.5V AAA battery

Measuring rate

3 measurements per second

Display when overvoltage occurs

"OL"

Maximum display

4000

Display

LCD display

Maximum working height

2,000 m / 13,123 ft

Temperature coefficient

0.1 x accuracy x °C, °F*

Operating conditions

18 ... 28°C / 64 ... 82°F

Store control admixtures

-10 ... 50°C / 14 ... 122°F

Dimensions

213 x 62 x 38 mm / 8.4 x 2.4 x 1.5 in

Weight

About 238 g / < 1 lb with batteries

*The temperature is the difference between the temperature of the operating conditions and

the current ambient temperature.

Example:

When current ambient temperature is higher than the temperature of the operating conditions

(50°C / 122°F (current ambient temperature)) - (40°C 104°F (operating temperature)) = 10°C / 50°F

When current ambient temperature is lower than the temperature of the operating conditions

(0°C / 32°F (operating temperature)) - (-5°C / 23°F (current ambient temperature)) = 5°C / 41°F

4 Device description

No.

Description

Measuring aperture for indirect measurement

Rotary switch

Connection for direct measurement (+)

Connection for direct measurement (-)

Display

Keypad

Lever to open the clamp

Clamp

4.1 Keys and connections

Name

Description

HOLD

Reading can be held

LPF

Low pass filter 50 Hz/60 Hz

FUNC

To switch measuring functions

Zero

Resets zero point when making current measurement

COM (black)

Ground connection (-)

Ω, Temp, diode

Connection for direct measurements (+)

Rotary switch

To turn meter on/off, to select measuring function

4.2 Display description

Displayed

Description

Direct / alternating current, direct / alternating voltage

Diode test

Continuity test

AUTO

Measurement range set automatically

MAX

Highest reading is displayed

MIN

Lowest reading is displayed

Auto Power Off function activated

Batteries are discharged and must be replaced

Displayed reading is held

Voltage measurement (Volt)

Current measurement (Ampere)

nF, µF,

Nano-/ Micro-/ Millifarat (capacitors)

Ω, kΩ, MΩ

Kilo-/ Megaohm (resistors)

ZERO

Zero point was set

°C °F

Degrees Celsius / degrees Fahrenheit

LPF

Low pass filter is active

5 Key functions

The functions of the meter’s keys are described in the following sub-chapters.

5.1 Hold reading

To freeze the currently displayed reading, short-press the “LPF/HOLD“ key. The reading will be

held. To resume the measurement, press the “LPF/HOLD“ key again. An “H“will be displayed as

soon as this function is active.

5.2 Low pass filter 50 Hz / 60 Hz current selection

To activate the low pass filter for the current measurement, press and hold the “LPF/HOLD“ key

for at least 2 seconds. To deactivate this function, press and hold the “LPF/HOLD“ key again for

2 seconds. If “LPF“is displayed, the function is activated.

5.3 Determine lowest and highest reading

To determine the lowest and the highest reading, press the “MAX/MIN“ key. To view these

readings, press the “MAX/MIN“ key repeatedly to switch between the lowest and the highest

value. When “MIN“is displayed, you are viewingthe lowest reading and when “MAX“is displayed,

you are viewing the highest reading.

To return to normal measuring mode, press and hold the “MAX/MIN“ key for at least 2 seconds.

Note: When this function is active, the auto range function is deactivated.

6 Set zero point (current measurement)

To set a new zero point during a current measurement, press the “FUNC/ZERO“ key. “Zero“ will

be displayed and the reading has been reset to zero. To reverse this zero setting, press the

“FUNC/ZERO“ key again.

6.1 Changing measuring functions and units

Not all measuring functions can be selected via the rotary switch. Therefore, several measuring

functions are assigned to one function. To select different measuring functions, press the

“FUNC/ZERO“ key repeatedly until you have reached your desired measuring function.

You can use the die “FUNC/ZERO“ key to switch between AC and DC and change the

temperature unit.

6.2 Auto Power Off function

If the meter is not used for 30 minutes, it will turn off automatically. One minute before it switches

off, the meter will emit a pulsating sound. To turn on the meter again, press any key or choose a

different measuring function.

To deactivate this function, press and hold the “FUNC/ZERO“ key when turning on the meter.

The icon in the display shows that the function is active.

7 Measurement

The individual measuring functions are explained in the following.

7.1 Current measurement (current clamp)

To make a current measurement with the current clamp, first select the right function with the

rotary switch. Now open the current clamp by pressing the lever at the side of the meter. Now

clamp the cable to be tested with the current clamp. After ashort time, you can view the measured

value.

Note: Only one cable canbe measured at a time. Measuring several cables would causeincorrect

readings. To obtain the most accurate measurement result possible, the cablemust be positioned

as centrally as possible.

Important: During the current measurement, the test leads must not be connected to the meter.

7.2 Voltage measurement

To make a voltage measurement, first connect the test leads to the meter. Then select “V“with

the rotary switch. You can select alternating current or direct current with the “FUNC/ZERO“ key.

Now touch the object to be tested with the test tips. The display will now show the reading.

Note: Due to the meter’s sensitivity, measured values may occur even when the test leads are

not connected. When the reading exceeds 600 V DC, AC (RMS), a sound can be heard.

7.3 Resistance measurement, continuity and diode test

To make a resistance measurement, a continuity test or diode test, first connect the test leads to

the meter. Then select “ Ω“ with the rotary switch. With the “FUNC/ZERO“key, you can now

select one of the functions. Now touch the object to be tested with the test tips. The measured

value will be shown in the display.

7.3.1 Resistance measurement

When “OL“ is displayed, this means that the circuit is open or the measurement has been

exceeded. When measuring high resistances, e. g. >1 MΩ, it can take a few seconds until a stable

reading is displayed.

7.3.2 Diode test

The voltage drop inthe forward direction of the diode is measured approximately. If the test leads

are connected with reversed polarity, "OL" is displayed.

7.3.3 Continuity test

As soon as the reading is <50 Ω, a sound can be heard. When the reading is >400 Ω, ”OL“ will

be displayed.

7.3.4 Capacitance measurement

When making a capacitance measurement, the measured capacitors are charged. To ensure an

accurate result, the capacitors must be discharged completely before making a measurement.

The meter as well as the test leads can increase the readings.

8 Replacing the batteries

When the battery icon appears in the display, the batteries must be replaced to make sure the

meter works properly. This will be the case when the battery voltage is <2.4 V.

To replace the batteries, first disconnect the test leads from the meter. Now turn off the meter.

You can now open the battery compartment at the rear side of the meter to replace the batteries.

Insert two new 1.5 V AAA batteries. Observe correct polarity. Close the battery compartment. The

meter should now work fine again.

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