- 10 micro ohm resolution on 40 milli ohm range
- 6 push button ranges 40 milli ohm... 4 kilo ohm with long scale length
This portable digital ohmmeter is a practical instrument for low resistance measurement, ideal for use in the workshop, field or test facilities. It is of rugged construction contained in an aluminium case with tilt handle.
The DO4A has many advanced features, digital calibration and long scale length, 4,000 count. The rechargeable sealed lead acid battery means real portability with more than 14 hours continuous operation, without the problems normally associated with other battery types. Full measurement capability is maintained whilst charging.
|Measurement||4 Terminal Kelvin/Thomson principle eliminates error due to lead resistance. Open circuit measurement voltage approx. 5V dc.|
|Display||15mm LCD 4,000 count with automatic decimal point and polarity indication.|
|Ranges||6 Push button selected with LED indication|
|Auto Zero||Permits the automatic zero of amplifiers and external circuits eliminating errors due to thermal emf.|
|Calibration||Digital, security key protected|
|Battery||6 Volt 2.8 Ah sealed lead acid, replaceable. Operating Time: 14 hours typical on bottom range, 28 hours typical on other ranges. Internal charger with automatic switch-off to prevent deep discharge.|
|Executive Lead Pack||This lead pack consists of four test leads, 1 metre long, with 4mm banana plugs, 4 crocodile clips, 4 test prods and 2 Kelvin Clips (combined current and potential clips).|
|Working Temp||0...40°C rel. humidity 80% max. non-condensing|
|Storage Temp||-20 ... +50°C|
|Mains Supply||100/120/220/240 Volts +10% -13%. 47 ... 63Hz. 20VA|
|Dimensions||215 x 250 x 88mm (W D H): 1/2 19" rack. 2U high (467 x 374 x 216mm packed in card carton)|
|Mass||3.5kg (4.5kg packed in card carton)|
|Accessories||Supplied complete with mains cord, measuring leads with Kelvin Clips, handbook and certificate of conformity|
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