Details
A rugged, hand-held Industrial Multimeter. The CMM-40 was designed for the measurements of:
-
AC/DC voltage
-
AC/DC current
-
resistance
-
capacitance frequency
-
duty cycle
-
temperature
-
testing diodes
-
continuity
Technical Specifications
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 2,000 measurement results,
- continuity test with acoustic signalling (beeper),
- „AUTO-OFF” function,
- display 4¾ digits (40,000 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 to 10.000 kHz | 0.01 Hz to 0.001 kHz | ± 0.5% m.v. |
- sensitivity: 1 V rms
Duty cycle measurement
| Range | Resolution | Accuracy |
| 0.10 to 99.9% | 0.01% | ±(1.2% m.v. + 2 digits) |
- pulse width: 100μs to 100 ms,
- frequency width: 5 Hz to 150 kHz.
Temperature measurement
| Range | Resolution | Accuracy |
| -50.0°C to +1,200.0°C | 0.1°C | ±(1% m.v. + 2.5°C) |
| -58.0°F to +2,192.0°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 digits) |
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 to 1000 Hz.
AC/DC current measurement (True RMS)
| Range | Resolution | Accuracy |
| 400.00 μA | 0.01 μA | for DC ±(1.0% m.v. + 3 digits)
for 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 1,000 V
- PEAK: captures peaks >1 ms
- sampling rate: 2 times per second
- input impedance: 10 MΩ (V DC), 9 MΩ (V AC)
- display: 40,000 counts backlit LCD with bargraph, 4¾ digits
- store capacitance: 2,000
- dimensions: 7.36″ x 3.19″ x 2.17″ / 187 x 81 x 55 mm
- weight: 0.75 lbs / 342 g
- fuses: mA, µA range: 0.5 A/1,000 V ceramic fast blow; A range: 10 A/1,000 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: 32F to 104F / 0 to +40°C
- storage temperature: -4F to 140F / -20 to +60°C
- operating humidity: max 80% up to 87°F (31°C); decreasing linearly to 50% at 104°F (40°C)
- operating altitude: max 6,562 ft / 2,000 m
