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Cropico DO7 Plus Micro Ohmmeter
Rugged Digital Microhmmeter for low resistance measurement,
with built in temperature compensation
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 microhmmeter 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.
This microhmmeter has a display length of 60000 counts and auto averaging of forward and reverse measurement removes thermal 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.T
The DO7Plus microhmmeter 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.
Key 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
Data Sheet
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Specifications
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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 degC or degF
Ranges
7 resistance ranges
Terminals
4mm safety sockets
Working Temperature
0 deg C to 40 deg C
Storage Temperature
-20 deg C to +50 deg C
Mains Supply
External mains psu 90V - 253V, 47Hz to 63Hz with interchangeable plugs.
Safety
Conforms to EN 61010-1:2001 50V Cat 3
Dimensions
358mm X 269mm X 155mm
Mass
<5Kg (instrument only)
Calibration
Digital, password protected, manual or via remote interface
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.
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Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
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