1. Manuals
  2. Brands
  3. Lumel Manuals
  4. Multimeter
  5. np10
  6. User manual

Lumel np10 User Manual

Analog -digital multimeter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
ANALOG -DIGITAL MULTIMETER
NP10
USER'S MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the np10 and is the answer not in the manual?

Questions and answers

Related Manuals for Lumel np10

Summary of Contents for Lumel np10

  • Page 1 ANALOG -DIGITAL MULTIMETER NP10 USER’S MANUAL...
  • Page 2 AUTO 230.0 50.00 (11) (10) (21) (20) (19) (18) (15) (17) (12) (16) (13) (15) (14) (11)
  • Page 3 (1) Liquid crystal display (2) PMAX / PMIN push button (3) Push button for MIN/MAX functions (4) Pushbutton for manual range selection (5) Multi function push button (6) Function selector switch. (7) Terminal sockets with automatic blocking system. (8) Push button for HOLD function (9) Push button for Back light function (10)Main Display for digits, decimal point and polarity (11)Display for manual range selection, Hold, MIN/MAX, Relative,...

  • Page 4: Table Of Contents

    12.Continuity test and Diode test............ 13 12.1 Continuity test..............13 12.2 Diode test................13 13.Capacitance measurement (NP10-5, NP10-6)......15 14. Frequency and Duty measurement(NP10-5, NP10-6)....16 14.1 Frequency measurement..........16 14.2 Duty cycle measurement..........16 15.Temperature measurement............17 16.Specifications................18 17.

  • Page 5: Introduction

    1. Introduction Thank you very much for selecting our multimeter. These multimeters are manufactured as per IS 13875 and DIN 43751. 2. Safety features and safety precautions you have chosen a multimeter which provides you a very high degree of safety.

  • Page 6: Switching The Multimeter "On

    Multi eter ee de ed r e sur m nts fo m a on r cur nt tran or sf m er ir uits a d h s no n i teg at d FU SE i t c rc i ui i c ng z a ar s i the...

  • Page 7: Function And Range Selection

    Note: Electric discharges and high-frequency influence may cause incorrect information to be displayed and block the measuring process. Reset the meter by switching it OFF and ON again otherwise, check the battery connections. Disconnect the meter from the measuring circuit before you open it, and see section “17.Maintenance”) Automatic Meter-OFF (MoFF) DMM has a default auto meter off function.

  • Page 8: Liquid Crystal Display

    switched OFF when push button AUTO/MAN is pressed (4) for approximately 1s,or when the function selector switch (6) is operated, or when the meter is turned OFF and ON again. Acknowl- AUTO edgement Display Switching sequence at : - 6.6V 8 66V VAC / 660V 1000V...

  • Page 9: Analog Indication

    5.2. Analog indication The analog indication with bar graph is updated 28 times per second. Analog indication is of particular use when observing variations of measured values. The analog bar graph (13) has its own polarity indication in measuring DC quantities, when the positive pole of the measured quantity is applied to the “...

  • Page 10: Peak Measurement

    Apply the measured quantity to the meter and select the measuring range prior to activating the MIN/MAX function. With the function activated, you can select the measuring ranges only manually, if you switch to another range, the stored MIN/MAX values are cleared. After Pressing MIN/MAX(3) for the first time, sub-display shows maximum value.

  • Page 11: Current Measurement

    Voltage measurement 50.00 50.00 +(-)/~ -(+)/~ 10. Current Measurement First disconnect the power supply to the circuit being measured and/ or to the load, and discharge all capacitors within that circuit. With the function selector switch (6), select A for currents >660mA and mA for currents <=660 mA.

  • Page 12: Ac Current Measurement With (Clip-On) Current

    1000V AC/DC and ohmic load. Replacement of the fuses is described in section “17. Maintenance’’. Caution The measuring ranges 16 A of Multimeter NP10-3 are not protected by a fuse! 10.1 AC current measurement with (clip-on) current transformer 10.1.1 Transformer output mA/A...
  • Page 13 Current measurement ...660 mA ...10 A 660.0 9.00 50.00 50.00 -(+)/~ -(+)/~ +(-)/~ +(-)/~ AC current measurement with(clip-on)current transformers 660.0 50.00...

  • Page 14: Resistance Measurement

    11. Resistance measurement Verify that the device under test is electrically dead. External voltages would falsify the measured result! Set the function selector switch (6) to “ W ” Connect the device under test as shown. Zero adjustment on the 660 W measuring range When measuring small resistance values on the 660W range, you can eliminate the resistance of the leads and contact resistance by REL function.
  • Page 15 As long as the voltage drop does not exceed the maximum display value of 1.999V, you can also test several series-connected elements or reference diodes with small reference voltage. Reverse direction or open circuit: The multimeter indicates overrange “OL”. With the diode function selected, the meter emits a continuous sound signal whenever the reading is less than 30mV.

  • Page 16: Capacitance Measurement (Np10-5, Np10-6)

    00.00 DiodeTest Reverse direction Forward direction 0.600 13. Capacitance measurement (Multimeter NP10-5, NP10-6 ) Verify that the device under test is electrically dead. External voltages would falsify the measured results! Set the function selector switch (6) to “ ” Connect the (discharged !) device under test to the “ ”and “ ’’...

  • Page 17: Frequency And Duty Measurement(Np10-5, Np10-6)

    By pressing and holding PEAK push button and then pressing AUTO/MAN key. This is acknowledged by sound signals. By switching the multimeter off. 14. Frequency and Duty measurement (Multimeter NP10-5, NP10-6) 14.1 Frequency measurement Set the function selector switch (6) to the “Hz”...

  • Page 18: Temperature Measurement

    The applied frequency must remain constant during the duty cycle measurement. 15.Temperature measurement The Multimeter NP10-2...NP10-6 allows you to measure temperature with K type thermocouple in the range from 0 C...1300 C. Set the function selector switch (6) to “ C ”...

  • Page 19: Specifications

    16. Specification Resol Measuring Meas. ution Range Function NP10-2 NP10-3 NP10-5 NP10-6 (TRMS) • • • • 100mV 660.0mV • • • • 6.600V • • • • 10mV V(DC) 66.00V • • • • 100mV 660.0V • • • •...
  • Page 20 Digital display Overload capacity Inherent deviation at Input reference condition Overload Impedance Overload +(...%rdg + ...digits) Values Duration >10 G // <40pF 0.7 + 5 11 M // <40pF 0.4 + 5 10 M // <40pF 0.4 + 5 1000 V 10 M // <40pF 0.4 + 5 10 M // <40pF...
  • Page 21 Resol Measuring Meas. ution Range Function NP10-2 NP10-3 NP10-5 NP10-6 (TRMS) • • • • 66.00KW • • • • 660.0KW 100W • • • • 6.600MW • • • • 10KW 66.00MW • • • • 100mW BUZZER 660.0W •...
  • Page 22 10Hz… 1kHz ± 5Digit 0.9% (% min) 1kHz…10kHz;± 5 Digit/kHz 2.0+3 4) Without sensor 5) Display with (clip-on) current transformers 1000 : 1 6) For Model NP10-3 (without FUSE) 16A 10 min. For Model NP10-5/NP10-6 (without FUSE) 12A 5 min. /16A 30 s...
  • Page 23 Influence Quantities and Variations Measured Variation Quantity/ Influence Range of + (...% of rdg. Measuring quantity Influence + ... digits) Range 1 X Intrinsic 0 ºC Temperature error +21 ºC Diode +25 ºC…+40ºC ºC 1.0+3 20 Hz..< 50 Hz 660mV~ 5.0+3 >...
  • Page 24 Influence Measuring RangeofInfluence Attenuation ranges quantity > 100 dB Noise quantity max. 1000 V Common >100 dB mode interference Noise quantity max. 1000 V ~ voltage 50 Hz, 60 Hz sinusoidal > 60 dB Noise quantity V~ 660mV, 6.6V, > 43 dB Normal value of the measuring 660V, 1000V dc...
  • Page 25 1000VAC/DC and ohmic load; in conjuction with power diodes, protects all current measuring ranges upto 660mA. Fuse for upto 10A ranges (Not for NP10-3) FF (UR)16 A / 1000 V AC/DC; 10mm x 38mm; rating 30 kA with 1000VAC/DC and ohmic load; protects the 10A ranges upto 1000V AC/DC See“17.

  • Page 26: Maintenance

    Reference conditions Ambient temperature 23 C+ 2 K Relative humidity 45% ... 55 % RH Frequency of measured quantity 45Hz ...65 Hz Waveform of the measured quantity sinusoidal Battery voltage 3V + 0.1V Environmental conditions Functional temperature range 0 C...50 C Storage temperature range -25 C...+70 C (without batteries) Relative Humidity...

  • Page 27: Fuses

    17.2 Fuses The 16 A fuse protects the 10 A range, the 1.6 A protects 66mA ,660mA current measuring ranges. When a fuse blows, first eliminate the cause of the overload before using the multimeter again ! Replacing the Fuses Place the multimeter on its face, loosen the two bottom cover screws on the rear and remove the bottom cover by, lifting it from the bottom.
  • Page 28 LUMEL S.A. ul. Sulechowska 1, 65-022 Zielona Góra, POLAND tel.: +48 68 45 75 100, fax +48 68 45 75 508 www.lumel.com.pl Export department: tel.: (+48 68) 45 75 139, 45 75 233, 45 75 321, 45 75 386 fax.: (+48 68) 32 54 091 e-mail: export@lumel.com.pl...

Table of Contents