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DRM-1A Portable Micro-ohmmeter.

DRM-1A Micro-ohmmeter. Measurement Range: 1µΩ to 200Ω. Current 1 Amp.
The DRM-1A micro-ohmmeter can be used to measure low resistances which vary from
1 micro ohm to 200 ohms. It is used for quality control of smelting parts, control of mechanical joints,
electrical connections, for inspection of contacts, circuit breakers, power fuses and more.

DRM-1A Micro-ohmmeter

Model  Description 
DRM-1A  DRM-1A Portable Micro-ohmmeter.

Advantages of the DRM-1A.
Shock resistant, it is suitable for all types of applications: work site or laboratory.
Its back-lighting liquid crystal display (LCD) enables it to be used in dark areas.
Weak current injection for applications that require small measurement contacts.
A variety of probes adapted to types of specific measurements are available as options.

The DRM-1A portable micro-ohmmeter uses a four-pin resistance measurement system,
which consists of injecting a current with two cables connected at each end of the joint to be tested.
Then, the cables are installed which allow reading the tension on each side of the part to be tested
in order to measure the resistance.
This eliminates any uncertainty linked to resistance of the contacts.
The instrument is equipped with a microprocessor, which eliminates gaps and parasite voltages.
Thanks to its unique filtering system, the DRM-1A can be used in spite of the presence of intense magnetic fields.

Micro ohmmeter specification
Precision  0,1% of the reading, +/- 2 counts 
Measurement Range  1µΩ to 200Ω 
Resolution  4 ¾ numbers 
Running Temperatures  -20°C to +50°C (-4° F to 122° F) 
Storage Temperatures  -40°C to +50°C (-40° F to 122° F) 
Humidity  0 to 95% non condensed Submersible, rain proof 
Measurement Current  5 mA, 100 mA, 1A 
Battery  Six (6) 1.2V, 2.1Ah rechargeable "A" NiMh batteries 
Charger  12V 1A adapter with sealed connector, available for 110V or 220V 
Display  Liquid crystal 128 X 64 dots, wide ranging temperatures
2.36 X 1.62 in. (60 X 41 mm)
2 back-lighting intensities (100%, 50%)8 X 4.5 X 2 in. 
Size & Dimension  (203.3 X 114.3 X 50.8 mm) 
Weight  1.9 lbs (0.86 kg)