INDEX CAT. WMGBMMR620
EAN 5907624015180
Ingress protection: IP 54
Measurement category: CAT III 300 V
Data transmission: RS-233
Display: graphic, monochrome, backlit
Description
Measure motor winding resistance and other low resistances
Possibility to measure objects of resistive and inductive nature with the use of versatile small resistance meter Sonel MMR-620.
We present a professional small resistance meter MMR-620, which ensures high measuring accuracy - the measurement resolution is 1 µΩ. With the use of this device it is possible to perform measurements of objects of both resistive and inductive nature (e.g. testing of transformers or motors). The meter provides a high measuring current for individual subranges and various operating modes, adjusted to the type of measured object - quick measurement mode (3 sec) for testing objects of resistive nature, as well as extended measurement mode for testing objects of inductive nature.
Product features
MMR-620 microohmmeter enables accurate measurements of both connections resistance (welded, soldered, bolted) and winding resistance of electrical motors.
- Measurements of objects resistive in nature:
- welded and soldered connections, equipotential bondings, earthing conductors,
- contacts, welds of rails, conductors and cables,
- measurement according to the four-lead method.
- Measurements of objects inductive in nature:
- motor windings,
- low-resistance coils.
Additional functions
- Automatic or manual selection of measuring range (measurement of objects of an inductive nature).
- Selection of measurement mode according to the type of measured object:
- fast measurement (3 seconds) for measurement of objects of a resistive nature,
- extended measurement for testing of objects of an inductive nature (accelerated mode, with slightly worse accuracy, available); with automatic discharging of the object after measurement.
- Selection of measurement mode depending on application (including control of product series):
- measurement in normal mode - triggered when the “START” button is pressed,
- measurement in automatic mode - the instrument awaits connection of all four test leads to the object, after which it automatically start measurement in one or both directions and calculates the mean resistance value,
- measurement in continuous mode - the meter repeats successive measurement cycles with breaks every 3 seconds (for objects of a resistive nature) or performs measurement continuously (for objects of an inductive nature)
- Window mode:
- makes possible to set an upper and lower limit within the measurement result should remain; sound signal triggered when the result is beyond set range,
- capability of performing measurements even under disturbances of a value five times greater than the measured signal.
Technical data
Resistance measurement
| Range | Resolution | Test current | Accuracy |
|---|---|---|---|
| 0...999 μΩ | 1 μΩ | 10 A | ±(0.25% m.v. + 2 digits) |
| 1.000...1.999 mΩ | 0.001 mΩ | 10 A | ±(0.25% m.v. + 2 digits) |
| 2.00...19.99 mΩ | 0.01 mΩ | 10 A | ±(0.25% m.v. + 2 digits) |
| 20.0...199.9 mΩ | 0.1 mΩ | 1 A | ±(0.25% m.v. + 2 digits) |
| 200...999 mΩ | 1 mΩ | 0.1 A | ±(0.25% m.v. + 2 digits) |
| 1.000...1.999 Ω | 0.001 Ω | 0.1 A | ±(0.25% m.v. + 2 digits) |
| 2.00...19.99 Ω | 0.01 Ω | 10 mA | ±(0.25% m.v. + 2 digits) |
| 20.0...199.9 Ω | 0.1 Ω | 1 mA | ±(0.25% m.v. + 2 digits) |
| 200...1999 Ω | 1 Ω | 0.1 mA | ±(0.25% m.v. + 2 digits) |
m.v. - measured value
| Parameter | Value |
|---|---|
| Net weight (kg) | 1.6 |
| Package weight (kg) | 5.4 |
| Package width (cm) | 50 |
| Package height (cm) | 19 |
| Package length (cm) | 32 |
US 18252 
GB 12455 
CA 10265 
AU 7833 
IE 1999 
NZ 1374 
IN 1312 
SG 1120 
