Lexman 3151700 Clamp Meter User Guide

3151700 Clamp Meter
User Guide

**C GUARANTEE YEARS*
EAN CODE : 3276007463712**

3151700 Clamp Meter

Preface

Thank you for purchasing the new AC clamp meter. In order to use this product safety and correctly, please read this manual thoroughly, especially the safety instructions part.
After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably close to the device, for future reference.

Limited warranty and liability
LEXMAN guarantee that the product is free from any defect in material and workmanship within one year from the purchase date. This warranty does not apply to damages caused by accident, negligence, misuse, modification, contamination or improper handling. The dealer shall not be entitled to give any other warranty on behalf of LEXMAN. If you need warranty service within the warranty period, please contact your seller directly.
LEXMAN will not be responsible for any special, indirect, incidental or subsequent damage or loss caused by using this device. As some countries or regions do not allow limitations on implied warranties and incidental or subsequent  damages, the above limitation of liability may not apply to you.

Overview

The LX-M-2100 is true RMS AC clamp meters.
It is designed according to EN61010-1 CAT II 600V/CAT III 300V safety standards. This meter come with full-featured protection which ensures users a safe and reliable measurement experience. Aside from all thermal features of AC clamp meter, this meter also include high voltage frequency measurement, fast capacitance measurement, audio visualNCV detection, and plenty of additional safety features.

Features

• True RMS measurement
• Audio visul NCV detection
• Maximum measurable voltage :600V
• High voltage frequency range :10Hz 10kHz Current) frequency response : 50Hz 100Hz : current frequency measurement function
• Very large capacitance (60mF), low voltage frequency (10MHz)
• Large LCD and fast refresh rate (3 times/s).
• Response time for capacitance measurement : less than 3s for 1mF; about 6s for 10mF; about 8s for 60mF
• Full-features fal se detection protection for up to 600V (30KVA) energy surge; overvoltage and overcurrent alarm functions.
• The power consumption of the meter is about 1.8 mA. The circuit has an automatic power saving function. The consumption in sleep state is 11uA, which effectively extends the battery life to 400 hours.

Warning:
Before using the meter, please read the safety instructions carefully

Accessories

Open the package box and take out the meter. Please double check
whether the following items are missing or damaged.
a) User manual ……………………………………………….1pc
b) Test leads …………………………………………………..1 pair
Cloth bag ……………………………………………………….1 pc
If any of the above is missing or damaged, please contact your supplier immediately.

Safety instructions

Warning:
To ensure safe operation and service of the tester, follow these instructions. Failure to observe these warnings can result in severe injury or death.
The meter is designed according to:
EN61010-1/&EN IEC 61010-2-032 and electromagnetic radiation protection EN IEC 61326-1;EN IEC 613326-2-2 safety standards and conforms to CAT II 600V, CAT III 300V, double insulation and pollution grade II.

Note:
Case the meter is not used in accordance with the operating instructions the protection provided by the meter may be weakened or lost.

1. Before each use verify tester operation by measuring a known voltage.
2. Before use, please check if there is any item which is damaged or behaving abnormally. If any abnormal item (such as bare test lead, damaged meter casing, broken LCD, etc.) is found, or if the meter is considered to be malfunctioning, please do not use the meter.
3. Do not use the meter if the rear cover or the battery cover is not covered up, or it will pose a shock hazard!
4. Keep fingers behind the finger guards and away from the probe contacts when making measurements.
5. The function switch should be placed in the correct position before measurement. It is forbidden to change the position during measurement to avoid damage to the meter!
6. Do not apply voltage over 600V between any meter terminal and earth ground to prevent electric shock or damage to the meter.
7. Use caution when working with voltage above AC 30Vr.m.s, 42V peak or DC 60V. Such voltages pose a shock hazard.
8. Never use the tester on a circuit with voltages that exceed the category based rating of this tester. If the range of the measured value is unknown, the maximum range of the measured value is unknown, the maximum range should be selected.
9. Before measuring the resistance, diode and continuity online, switch of the power supply of the circuit, and fully discharge all capacitors to avoid inaccurate measurement.
10. When the « » symbol appears on tge LCD, please replace the batteries in time to ensure measurement accuracy. If the meter is not in use for a long time, please remove the batteries.
11. Do not change the internal circuit of the meter to avoid damage meter and user.
12. Do not use or store the meter in high temperature, high humidity, flammable, explosive and strong magnetic field environments.
13. Clean the meter casing with a soft cloth and mild detergent. Do not use abrasives or solvents!

Electrical symbols

directly to utilization points (socket outlets and similar points) of the lowcoltage MAINS installation
CAT III| It is applicable to test and measuring circuits connected to the distribution part of the building’s lowcoltage MAINS
installation

General specifications

1. Max display: 6099 (LX-M-2100)
2. Polarity display : Auto
3. Overload display : «OL» or (-OL)
4. Low battery indication : the « » symbol is displayed.
5. Low battery shutdown prompt : The «Lo.bt» interface appears on the LCD and lasts for about 10s, the buzzer beeps three times, and the meter automatically shuts down.
6. Test position error : If the source under test is not placed at the center of the clamp jaws when measuring current, + 1,0% additional error in reading will be produced.
7. Drop protection : 1m
8. The maximum size of jaw opening : 28 mm in diameter
9. Battery ; AAA battery 1.5V x 2
10. Auto power off : If there is no operation of the function switch or any button for 15 minutes, the meter will automatically power off. This function can be turned off as needed.
11. Dimensions : 215,1mm x 72,5mm x 37,8mm
12. Weight : about 248g (including batteries).
13. Altitude : 2000m
14. Operating temperature and humidity: 0°C-30°C ( 80% RH), 30°C 40°C) ( 75% RH), 40°C 50°C ( 45% RH)
15. Storage temperature and humidity: -20°C 60°C ( 80% RH)
16. Electromagnetic compatibility:
    RF = 1V/m, overall accuracy = specified accuracy + 5% of range
    RF = 1Vm, no specified calculation

External structure

Button description

1. SELECT button
   In the composite function position, press this button to switch between the corresponding measurement functions : in the AC/DC/Hz position, short press this button to switch between the AC and DC functions, and long press  (about 2s) this button to enter/exit the Hz measurement function.

2.  HOLD/BACKLIGHT – SELECT button
   Short press this button to enter/exit the data hold mode, and long press (about 2s) this button to turn on/off the backlight (the backlight will automatically turn off after 60s).

3. MAX/MIN button
   Short press this button to enter the maximum/minimum measurement mode and long press this button to exit (only valid for AC/DC voltage, AC current, resistance and temperature measurement).

4. REL. button
   In the capacitance and voltage positions, press this button to store the current reading as a reference for future readings. When the LCD display value is reset to zero, the stored reading will be subtracted from the future readings.  Press this button again to exit the relative value mode.

Operating instructions

1. AC Current/Current frequency measurement (Picture 2)
   1 – Select the AC current range (6A/60A/600A.)
   2 – Press the trigger to open the clamp jaws, and fully enclose one conductor Note :
   • The current measurement must be taken within 0°C 40°C. Do not suddenly release the trigger, as the impact will change the reading for a short time.
   • To ensure measurement accuracy, center the conductor in the jaws. Otherwise,

• 1.0% additional error in reading will be produced.
  • When the measured current is 600A ), the meter will automatically sound an alarm and the high voltage alarm prompt  « » will automatically flash.
  • If the LCD displays «OL», it indicates that the current is over range and there is a danger of damage to the meter.

  2. AC/DC voltage and voltage frequency measurement (Picture 3)
     1 – Insert the red test lead into the « » jack, black into the «COM» jack.
     2 – Turn the function switch to the AC/DC voltage position, and connect the test leads with the measured load or power supply in parallel. Note :
     •  Do not input voltage above 600V. Although it is possible to measure higher voltage, it may damage the meter.
     •  Be cautious to avoid electric shock when measuring high voltage.
     •  When the measured voltage is 30V (AC) or 60V (DC), the LCD will display the high voltage alarm prompt.

  3. Resistance measurement (Picture 4)
     1 – Insert the red test lead into the « » jack, black into the «COM» jack.
     2 – Turn the function switch to the position, press the SELECT button switch to select resistance measurement, and connect the test leads with both ends of the measured resistance in parallel. Note :
     •  If the measured resistor is open or the resistance exceeds the maximum range, the LCD will display «OL».
     • Before measuring the resistance online, switch off the power supply of the circuit, and discharge all capacitors to avoid inaccurate measurement.
     • If the resistance is not less than 0.5Ω when the test leads are short- circuited, please check the test leads for looseness or other abnormalities.
     • Do not input voltage higher than 30V to avoid personal injury.

  4. Continuity test (Picture 4)
     1 – Insert the red test lead into the « » jack, black into the « » jack.
     2 – Turn the function switch to the « »position, press the SELECT button to select continuity measurement, and connect the test leads with both ends of the measured load in parallel.
     3 – Measured resistance 10 Ω   .The circuit is in good conduction status; the buzzer beeps continuously. Measured resistance 31 Ω  : the buzzer makes no sound.
     Note :
     • Before measuring the continuity online, switch off the power supply of the circuit, and fully discharge ask capacitors.
     • Do not input voltage higher than 30V to avoid personal injury.

  5. Diode test (Picture 4)
     1 – Insert the red test lead into the « » jack, black into the «COM» jack. The polarity of the red test lead is «+» and that of the black test lead is «-».
     2 – Turn the function switch to the « »position, press the SELECT button to select diode measurement, and connect the test leads with the positive and negative poles of the measured diode.
     3 – 0.08V reading 1.2V : the buzzer makes on beep indicating the normality of the diode. Reading 0.08V : the buzzer beeps beeps continuously indicating the damage of the diode. For the silicon PN junction, the normal value is generally about 500-800 mV.
     Note :
     If the diode is open or its polarity is reversed, the LCD will display «OL».
     Before measuring the diode online, switch off the power supply of the circuit, and fully discharge all capacitors.
     Do not input voltage higher than 30V to avoid personal injury.

  6. Capacitance measurement (LX-M-2100, picture 4)
     1 – Insert the red test lead into the « » jack, black into the «COM» jack.
     2 – Turn the function switch to the « **»position, and connect the test leads with the measured capacitance in parallel. For capacitance , 100nF, it is recommended to use «REL» measurement mode.
     Note :**
     If the measured capacitor is short-circuited or the capacitance exceeds the maximum range, the LCD will display «OL».
     When measuring capacitance 400 F , it may take some time to steady the readings.
     Before measuring, fully discharge all capacitors (especially for capacitors with high voltage) to avoid damage to the meter and user.

  7.  Non-contact AC electric field sensing (NCV, picture 5)
     The electric field sensing sensitivity is divided into two levels (»EFHI» and «EFLo»). The meter defaults to «EFHI». Select different sensitivity levels for measurement according to the intensity of the measured electric field.
     When the electric field is around 220V (AC) 50Hz/60Hz, select «EFHI»;
     when the electric field is around 110V (AC) 50Hz/60Hz, select «EFLo».
     1 – Turn the function switch to the NCV position.
     2 – Bring the SCV sensing end of the clamp jaws dose to charged electric field (socket, insulated wire, etc.) The LCD will display the segment «-», the buzzer will beep, and the red LED will flash. As the intensity of the measured electric field increases, the more the segments (—-) are displayed, and the higher the frequency at witch the buzzer beeps and the red LED flashes. Note :
     Use the NCV sensing end of the clamp jaws to approach the measured electric field, otherwise the measurement sensitivity will be affected.
     When the measured electric field voltage is 100V (AC), observe whether the conductor of the measured electric field is insulated to avoid personal injury.

  8. Probe usage (Picture 6)
     TESTING IN CAT III MEASUREMENT LOCATIONS
     Ensure the test lead shield pressed firmly in place. Failure to use the CAT III shield increases arc-flash risk. TESTING IN CAT II MEASUREMENT LOCATIONS
     CAT III shields may be removed for CAT II locations. This will allow testing on recessed conductors such as standard wall outlets. Take care not to lose the shields.

  9. Others
     1 – Auto power off : during measurement, if there is not operation of the function switch or any button for 15 minutes, the meter will automatically shut down to save power. You can wake it up by pressing any button or restart it  after turning the function switch to the OFF position. to disable the auto power off function, press and hold the SELECT button in the off state, and then turn on the meter. To resume the auto power off function, restart the meter  after shutdown.
     2 – Buzzer : when any button is pressed or the function switch is turned, if it is valid, the buzzer will make one beep (about 0,5s). When measuring voltage or current, the buzzer will beep intermittently to indicate the over range.
     3 – Low battery detection : the battery voltage will be automatically detected as long as the meter is on. If it is lower than 2.5V, the LCD will display the « » symbol.
     4 – Low battery shutdown function : when the battery voltage is lower than 2.4V, the LCD display the « » symbol, the «Lo.bt» interface appears and lasts for about 10s, the buzzer makes consecutive beeps three times, and then the meter automatically shuts down (no interface is displayed).

Technical specifications

Accuracy : + (a% of reading + b digits), 1 year calibration period ambient temperature and humidity : 23°C + 5°C, 80%RH.
Temperature coefficient : to ensure measurement accuracy, operating temperature should be within 18°C 28°C and the fluctuation range should be within + 1°C. When the temperature is 18°C or 28°C, add temperature coefficient error 0.1 x (specified accuracy)/°C.

1. AC Current****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100
   6. 000A| 0. 001A| ± (410+10)| 620A
   60. 00A| 0.01A| ± (2%+10)
   600. OA| 0. 1A|
   Current frequency monitoring:| 0.1Hz| ± (1. O%+5)
   50Hz-100Hz| |

• Frequency response : 50Hz 100Hz
• For A4 range, open circuit allows least significant digit 3.
• Accuracy guarantee range : 1% 100% of range
• The input current amplitude of the current frequency should be 2A

2. AC Voltage****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100
   6.000V| O. 001V| ± (1. 0%+5)| 600Vrrns
   60. 00V| 0. OIV| ± (0. 8%+5)
   600. OV| 0. 1V
   |
   Voltage frequency monitoring: 10Hz-10kHz| 0.01Hz—0.01kHz| ± (1. 0%+5)

• Input impedance : about 10M Ω
• Frequency response ; 45Hz 400Hz, true RMS display
• Accuracy guarantee range : 1% 100% of range; the input voltage amplitude of the voltage frequency should be 5V
• The AC crest factor of a non-sinusoidal wave can reach 3.0 at 4000 counts while can only reach 1.8 at 6000 counts. The additional error should be added for the corresponding crest factor as follows :
a) Add 3% when crest factor is 1 2
b) Add 5% when crest factor is 2 2.5
c) Add 7% when crest factor is 2.5 3

3. DC Voltage****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100
   600. OmV| 0. 1mV| ± (0. 7%+3)| 600Vrms
   6. 000V| 0. 001V| ± (0. 5%+2)
   60. 00V| O. 01V| ± (0. 7%+3)
   600. OV| 0. 1V
   |

•  Input impedance : about 10M Ω
•  For mV range, short circuit allows least significant digit 5.
•  Accuracy guarantee range : 1% 100% of range

4. Frequency/Duty Ratio****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   10HZ— 10MHz| a 01Hz0. 01MHz| ± (0. V”)| 600Vrms
   0. 1%
   99. 9%| 0.1%| ± (3. 0%+5)| 1)Measuring sensitivity:
   5100kHz: 200mVrms 5 input amplitude s 30Vrms >100kHz-1MHz: 600mVrms s input amplitude s 30Vrms

   1MHz-10MHz: 1Vrms 5 input amplitude s 30Vrms
   2)Duty ratio is only applicable to the measurement of square wave 5 10kHz; amplitude: 1Vp-p Frequency s1 kHz Duty ratio: 10.0%-95.0%
   Frequency >1kHz Duty ratio: 30.0%-70.0%

5. Resistance****
   Range| | Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100| Resolution
   600.00| 0.10| ± (1.0%+2)| 600Vrrns
   6.000k0| 0.001k0| t(0.8%+2)
   60.00k0| 0.01k0
   600.0k0| 0.1k0
   6.000 MO| 0.001 MO| ±(2.0%+5)
   60.00 MO| 0.01M0
6. Continuity****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-N1-2100
   600.00| 0.10| <100: Consecutive bee 500ps
   .?.. : No beep| 600Vrms
   Open circuit voltage: About 2.0V
7. Diode****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100
   6. 000V| 0. 00W| Open circuit voltage: About 3.9V
   Measurable PN junction: Forward voltage drop 52V. For the silicon PN junction, the normal value is generally about 0.5-0.8V.| 600Vrms
8. Capacitance****
   Range| Resolution| Accuracy| Overload Protection
   ---|---|---|---
   LX-M-2100
   6.000nF| 0.001nF| ± (4. 0%+10)| 600Vrms
   60.00nF| 0.01nF
   600.0nF| 0.1nF
   6.000uF| 0.001uF| ± (4. 0%+5)
   60.00uF| 0.01uF
   600.0uF| 0.1uF
   6.000mF| 0.001mF| ±10%
   60.00mF| 0.01mF|

• Measured value = displayed value – open circuit value of the test leads (For capacitance 100nF, it is recommended to use «REL» measurement mode.)
For capacitance range, open circuit allows least significant digit 20.

9. NCV****
   Range| Electric field sensing sensitivity level| Accuracy
   ---|---|---
   NCV| EFLo| To sense the wire above 24±6V and identify whether the mains socket is charged
   EFHI| To sense the wire above 74V±12V, to identify whether the mains socket is charged, or to judge the live/neutral wire of the socket according to the intensity of the sensing

• Test results may be affected by different socket designs or wire insulation thickness.

Maintenance

Warning :
Before opening the rear cover of meter, remove the test leads to avoid electric shock.

1. General Maintenance
   1 – When the meter is not in use, place the function switch in the OFF position to avoid continuous consumption of battery energy.
   2 – Clean the meter casing with a soft cloth and mild detergent.
   Do not use abrasives or solvents!
   3 – The maintenance and service must be implemented by qualified professionals or designated departments.

2. Battery replacement (picture 7)
   1 – Turn off the meter and remove the test leads from the input terminals.
   2 – Unscrew the screw of the battery compartment, remove the battery cover, and replace the 2 standards AAA batteries according to the polarity indication.
   3 – Secure the battery cover and tighten the screw.

Electrical products must not disposed of out with domestic waste. They must be taken to a communal collecting point for environmentally friendly disposal in accordance with local regulations. Contact your local authorities or stockiest for advice on recycling. The packaging material is recyclable. Dispose of the packaging in an environmentally friendly manner and make it available for the recyclable material collection-service.
Don’t throw batteries or out of order products with the household waste (garbage). The dangerous substances that they are likely to include may harm health or the environment. Make your retailer take back these products or use the  selective collect of garbage proposed by your city.

5- Year warranty Made in CHINA

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| Lexman 3151700 Clamp Meter [pdf] User Guide
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