| Features
|
 |
- True 4 wire input eliminates lead
resistance errors.
- 6 ranges from 600.0 uOhm to 60.00
Ohm (0.1 microOhm resolution).
- Large 0.8" FED display.
- 0.1 microOhm resolution.
- 10 A measuring current.
- Input protection to 415V RMS.
- Forward and reverse measuring current.
- Auto average of forward and reverse
measurement to offset thermal EMF.
- RS 232 output.
- Digital calibration.
- Line / rechargeable battery operation.
Minimum 1 hours operation from full charge, built-in battery
charger with battery state indicator, full measuring functions
during battery charging.
- Open circuit warning.
- Rugged industrial maintenance free
design.
- Worldwide universal line operation
switchable from 100 to 240 Volts
|
| 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 ABC plastic case with lid
and handle.
The rechargeable sealed lead acid battery
means real portability with more than 1 to 20 hours continuous
operation. Built-in charger with automatic switch off to prevent
deep discharge. Full measurement capability is maintained
when batteries are being charged.
The DO7 is supplied ready for immediate
use with battery, line cord and four wire test leads with
Kelvin clips.
|
| Technical Specification |
| Range |
Resolution |
Test Current |
Uncertainty (1 year) |
| 60 Ohm |
10 mOhm |
1 mA |
0.15%Rdg + 0.05%FS |
| 6 Ohm |
1 mOhm |
10 mA |
0.15%Rdg + 0.05%FS |
| 600 mOhm |
100 uOhm |
100 mA |
0.15%Rdg + 0.05%FS |
| 60 mOhm |
10 uOhm |
1 A |
0.15%Rdg + 0.05%FS |
| 6 mOhm |
1 uOhm |
10 A |
0.2 %Rdg + 0.1 %FS |
| 600 uOhm |
0.1 uOhm |
10 A |
0.2 %Rdg + 0.1 %FS |
|
| Measurement |
4 Terminal Kelvin/Thompson principle
eliminates errors due to lead resistance. Open circuit meas.
vol. = 2Vdc |
| Display |
6000 count 0.8" LED with automatic
decimal point and polarity indication |
| Ranges |
6 Push button selected with LED indication |
| Terminals |
6mm binding posts accept spade tags
and 4mm banana plugs |
| Protection |
415Vrms |
| Safety |
iec 348 Protective class 1 |
| Wroking temp. |
0 °C to 40 °C |
| Dimensions |
343 x 327 x 152
mm (W D H) |
| Battery |
Sealed lead acid, rechargeable cells
giving a maximum of 1 hour's continuous measurement on the lowest
10Amp ranges and 20 hours on all other ranges. Internal charger
with battery state indicator |
| Weight |
8kg |
| Calibration |
Digital, security key protected |
