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CMM-40

Catalog index: WMXXCMM40

Industrial Multimeter

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  • Most useful for industrial and service work

    Sonel CMM-40 is an instrument with extended measuring capabilities designed for industrial, service and other works. It is used for measuring voltage and current (DC and AC TRUE RMS), capacitance, frequency, duty cycle (power cycle), continuity of connections, resistance and temperature, among other things. Additional functions such as automatic or manual range change, HOLD function, peak hold function and REL function further expand the possibilities of this device.

    With its clever ergonomic design and neat dimensions, the CMM-40 is extremely convenient to use and works well even in hard-to-reach places. The easy-to-read backlit display allows you to read the result even in low light. The compact and cost-effective device offers a wide range of measurement capabilities, making it an essential tool for specialists in the field of electrical engineering and sanitary engineering. The Sonel CMM-40 is an instrument which combines a wide range of functions with ease of use and a favourable price, so it can be successfully recommended even to beginners.

    12 measuring functions

    • DC and AC (TRUE RMS) voltage
    • DC and AC (True RMS) current
    • resistance
    • frequency
    • duty cycle
    • capacitance
    • current loop 4-20 mA
    • continuity
    • diode test
    • temperature

    Special features

    • MAX and MIN function for saving extreme values
    • AC+DC function for reading the sum of an alternating and direct component
    • REL mode for relative measurement to a stored reference value
    • PEAK Hold for displaying the peak value of the measured parameter

    Application areas

    • best option for professional and industrial electricians thanks to the robust design and safety on the CAT IV 600 V level
    • dirty and dusty evironment will not be an obstacle thanks to ingress protection on IP67 level
    • HVACR specialist and utility technicians they will be grateful for the help the device gives them

Specification

The most important features of CMM-40 are:

  • autoranging/manual range selection,
  • „DATA HOLD” function, for holding measured values,
  • „REL” function, which allows you to make measurements relative to a stored reference value,
  • „MAX/MIN” function,
  • „PEAK HOLD” function,
  • memory for 2000 measurement resultS,
  • continuity test with acoustic signalling (beeper),
  • „AUTO-OFF” function,
  • display 4¾ digits (40000 max),
  • double molded, waterproof casing.

Frequency measurement (electronic)

Range Resolution Accuracy
40,000 Hz 0,001 Hz ±(0,1% m.v. + 1 digit)
400,00 Hz 0,01 Hz
4,0000 kHz 0,0001 kHz
40,000 kHz 0,001 kHz
400,00 kHz 0,01 kHz
4,0000 MHz 0,0001 MHz
40,000 MHz 0,001 MHz
100,00 MHz 0,01 MHz not speccified
  • Sensitivity: 0.8 V rms min. @ 20% to 80% duty cycle and <100 kHz; 5 V rms min @ 20% to 80% duty cycle and > 100 kHz

Frequency measurement (electrical)

Range Resolution Accuracy
40,00 Hz…10,000 kHz 0,01 Hz…0,001 kHz ± 0,5% m.v.
  • sensitivity: 1 V rms

Duty cycle measurement

Range Resolution Accuracy
0,10…99,9% 0,01% ±(1,2% m.v. + 2 digits)
  • pulse width: 100μs – 100 ms,
  • frequency width: 5 Hz…150 kHz.

Temperature measurement

Range Resolution Accuracy
-50,0°C…+1200,0°C 0,1°C ±(1% m.v. + 2,5°C)
-58,0°F…+2192,0°F 0,1°F ±(1% m.v. + 4,5°F)

DC voltage measurement

Range Resolution Accuracy
400,0 mV 0,01 mV ±(0,06% m.v. + 4 digits)
4,0000 V 0,0001 V
40,000 V 0,001 V
400,00 V 0,01 V
1000,0 V 0,1 V ±(0,1% w.m. + 5 cyfr)

AC voltage measurement (True RMS)

Range Resolution Accuracy
400,00 mV 0,01 mV ±(1% m.v. + 40 digits)
4,0000 V 0,0001 V ±(1% m.v. + 30 digits)
40,000 V 0,001 V
400,00 V 0,01 V
1000,0 V 0,1 V
  • frequency range: 50…1000 Hz.

AC/DC current measurement (True RMS)

Range Resolution Accuracy
400,00 μA 0,01 μA dla DC ±(1,0% m.v. + 3 digits)dla AC ±(1,5% m.v. + 30 digits)
4 000,0 μA 0,1 μA
40,000 mA 0,001 mA
400,00 mA 0,01 mA
10,000 A 0,001 A
  • 20 A: 30 sec max with reduced accuracy.

Resistance measurement

Range Resolution Accuracy
400,00 Ω 0,01 Ω ±(0,3% m.v. + 9 digits)
4,0000 kΩ 0,0001 kΩ ±(0,3% m.v. + 4 digits)
40,000 kΩ 0,001 kΩ
400,00 kΩ 0,01 kΩ
4,0000 MΩ 0,0001 MΩ
40,000 MΩ 0,001 MΩ ±(2,0% m.v. + 10 digits)

Capacitance measurement

Range Resolution Accuracy
40,000 nF 0,001 nF ±(5,0% m.v. + 7 digits)
400,00 nF 0,01 nF
4,0000 μF 0,0001 μF ±(3,0% m.v. + 5 digits)
40,000 μF 0,001 μF
400,00 μF 0,01 μF
4000,0 μF 0,1 μF ±(5,0% m.v. + 5 digits)
40,000 mF 0,001 mF

Other technical data:

  • power supply: 9 V battery type 6LR61
  • diode test: I=0,9 mA, U0 = 2,8 V DC
  • continuity test: I<0,35 mA, sound signal for R<35 Ω
  • over range indication: 0L displayed
  • crest factor: ≤ 3 at full scale up to 500 V; decreasing linearly to ≤ 1,5 at 1000 V
  • PEAK: captures peaks >1 ms
  • sampling rate: 2 times per second
  • input impedance: 10 MΩ (V DC), 9 MΩ (V AC)
  • display: 40000 counts backlit LCD with bargraph, 4¾ digits
  • store capacitance: 2000
  • dimensions: 187 x 81 x 55 mm
  • weight: 342 g
  • fuses: mA, µA range: 0,5 A/1000 V ceramic fast blow; A range: 10 A/1000 V ceramic fast blow
  • auto power OFF: 15 min.
  • accordance with following standards: EN 61010 – 1:2004, EN 61010 – 2 – 032

Electric security:

  • type of insulation: double, according to EN 61010 – 1 and IEC 61557
  • measurement category: CAT III 1000 V acc. to EN 61010 – 1:2004
  • protection class acc. to EN 60529: IP67

Rated operational conditions:

  • operating temperature: 0…+40°C
  • storage temperature: -20…+60°C
  • operating humidity: max 80% up to 87°F (31°C); decreasing linearly to 50% at 104°F (40°C)
  • operating altitude: max 2000 m

„m.v.”- measured value

Files to Download

Data Sheet

User Manual

Declarations of conformity

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