| Features
|
 |
- On screen real time graphical plotting
cooling curve facilities with peak resistance value calculator
- It’s fast, reading rate of 2 readings per second
- Measuring ranges from 6 mohm to 6 Kohm
- Resolution 100 nohm to 6 mohm range
- Backlit LCD graphic panel with programmable timer for
battery conservation
- Single pulse measurement for fast resistance tests
- Continuous measurement current for inductive tests
- Full test lead continuity testing and diagnostic display
- Multi lingual - Display available in English, French,German,
Spanish or Italian.
|
| |
| The DO7Plus is a 10A
Microhmmeter, suitable for applications within Aerospace, Utilities,
Cable or Machine Manufacturers or where a cooling curve is required
to plot peak resistance. Sealed in an IP67 case (when closed
or IP53, lid open) it is ruggedly constructed to ensure durability. |
|
The DO7Plus has a backlit LCD graphics panel, full QWERTY
keyboard, temperature compensation via optional PT100 probe,
and built in coefficients for Copper and Aluminium as well
as user defined. Full cooling curve facilities are built in,
with real time graphical plotting on the LCD. Data log memory
contents can be plotted and a curve fitted to calculate the
peak resistance value when t=0.
The unit has a display length of 60000 counts and auto averaging
of forward and reverse measurement removesthermal emf differences.
Connectivity is improved with both USB and RS232 for data
downloading. The internal memory holds up to 1000 date and
time stamped readings and which can be viewed on the LCD or
downloaded with the free software provided, as CSV file to
a PC for further analysis.
The data log memory using the latest FRAM technology which
offers unlimited read/write cycles and over 10 years of data
retention, without relying on internal batteries. The unit
has built in rechargeable batteries which will provide up
to 1 hour of continuous use at 10A, and up to 20 hours at
all other ranges.
|
| Technical Specification |
| Range |
Current |
Resolution |
FSV |
Uncertainty |
| 6.0000 mOhm |
10 A
|
100 nOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 60.000 mOhm |
1 A |
1 MicroOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 600.00 mOhm |
100 mA |
10 MicroOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 6.0000 Ohm |
10 mA |
100 MicroOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 60.000 Ohm |
1 mA |
1 mOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 600.00 Ohm |
100 Micro A |
10 mOhm |
60 mV |
0.05% Rdg +0.01%FS |
| 6.0000 KOhm |
100 Micro A |
100 mOhm |
600 mV |
0.05% Rdg +0.01%FS |
|
| Measurement |
4 Terminal Kelvin/Thompson
principle eliminates errors due to lead resistance. |
| Display |
60,000 count + sign LCD graphics
panel with backlight Select display value of °C or °F |
| Ranges |
7 resistance ranges |
| Terminals |
4mm safety sockets |
| Calibration |
Digital Password protected, manual
or via remote interface |
| Safety |
Conforms to EN 61010-1:2001 600V
Cat 3 |
| Wroking temp. |
0 °C to 40 °C |
| Dimensions |
358mm X 269mm
X 155mm |
| Battery |
Internal, fixed NiMh battery pack,
Gas Gauge circuits to monitor battery capacity. Internal automatic
FAST / TRICKLE battery Charger. DC input from 9V to 36V. |
| Weight |
<5Kg (instrument only) |
| Mains Supply |
External mains psu 90V – 253V, 47Hz
to 63Hz with interchangeable plugs. |
