Cropico DO5000 Programmable Digital Microhmmeter

Programmable Digital Microhmmeter DO5000

This new generation of microhmmeters offers flexibility of measurement with high accuracy and exceptional functionality.

The DO5000 encompasses all the features required of an ohmmeter in one instrument. Programmable measuring current in 100 steps ensures that the DO5000 is suitable for all your applications. Automatic temperature compensation references the measurement to 20°C and Hi / Lo limits permits sorting of components with the minimum of fuss. All these options are included in the basic unit as well as a data logging function which stores up to 4000 readings with date and time stamp. Statistical analysis of these values allows you to display the Max / Min /Average values as well as peak to peak and standard deviation. The DO5000 will even calculate cable lengths in ohms/metre.

The DO5000 is a truly remarkable instrument and ideally suited for laboratory testing of samples, for production line testing, and with the addition of the interfaces RS232 / IEEE-488 or PLC the DO5000 may be remotely controlled and integrated into an automated testing system. For those applications where speed is important the DO5000 has a FAST measurement mode which measures at 50 measurements per second.

For applications where portability is required the model 5001 may be powered either from the mains or by the inbuilt rechargeable batteries. The charger is also incorporated into the unit and the full 10 Amps pulsed measuring current is available when used in battery mode.

Whatever your resistance measurement application the DO5000 provides the solution.

Battery & Low Current versions also available.

Related Products

3 Wire Set RCT-S

Cropico DO5001Rechargeable Digital Microhmeter

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Key Features

True 4 measurement eliminates lead resistance errors
Wide measuringe range 3 milliohms to 30 kilohms
Resolution 0.1 microhms on 30 milliohm range
High accuracy 0.03%
Programmable measuring currents 0 to 100% in 1% steps
10 Amp measuring current
Programmable Hi/Lo limits with red/green lamps on front panel
Fast measuring mode up to 50 measurements / second
Automatic temperature compensation with programmable oefficients
Open circuit limit mode 20mV / 50mV maximum
Measuring current +I -I and auto average
Interface options RS232, IEEE-488 and PLC
Data logging with statistical analysis
Rechargeable battery version
Calculates cable length ohms/kilometre

If you are:

a fuse manufacturer...The DO5000 measures the fuse resistance on production line using FAST mode 50 measurements per second and interface

an automotive component manufacturer...The DO5000 measures the air bag and seat belt detonator resistance and the ABS braking system coils

an electrical/electronic component manufacturer...The DO5000 measures the switch contact resistance and the relay contact resistance

a resistor manufacturer...The DO5000 measures the resistance values for quality control and tolerance sorting

an electric motor and generator manufacturer and repairer...The DO5000 measures the winding resistance for the determination of heat rise in motors and generators

a cable manufacturer...The DO5000 measures the cable resistance (usually 1 metre length) to ensure compliance with specification

a transducer manufacturer...The DO5000 measures the resistance measurement of transducers

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Technical Specification

Measurement	4 wire eliminates lead resistance
Display	LCD Graphics panel with backlight 30000 count
Ranges	Manual / Automatic
Auto Zero	Value Average Hold
Systems Interface	RS232 fitted as standard, IEEE-488, PLC option
Terminals	4 mm safety sockets
Working Temperature	0°C ... 45 °C
Storage Temperature	-10°C...+60 °C
Mains Supply	230 V ±10%, 115 V ±10% 47...63Hz
Safety	IEC 1010 Class 1
Dimensions	339 x 324 x 131 mm (W D H)
Weight	18.7 lbs. (8.5 kg)
Accessories	Supplied with RS232 interface, mains cord, handbook and certificate of conformity

Resistance Ranges

Range	Resolution	Min. Current	Max. Current	Accuracy at full rated current
30kOhm	1Ohm	10 mA	100 mA	±(0.03% Rdg +0.02% FS)
3kOhm	100mOhm	100 mA	1mA	±(0.03% Rdg +0.01% FS)
300Ohm	10mOhm	1 mA	10mA	±(0.03% Rdg +0.01% FS)
30Ohm	1mOhm	10 mA	100mA	±(0.03% Rdg +0.01% FS)
3Ohm	100 microhm	100 mA	1A	±(0.03% Rdg +0.01% FS)
200mOhm	10 microhm	1 A	10A	±(0.03% Rdg +0.01% FS)
30mOhm	1 microhm	1 A	10A	±(0.03% Rdg +0.01% FS)
3mOhm	100 nanohm	1 A	10A	±(0.03% Rdg +0.02% FS)

Wide Measuring Range
The long scale length 30000 count combined with its wide memory range enables the DO5000 to tackle the most demanding tasks with ease. The resolution is 0.1 micro ohm on the lowest range and the maximum reading is 30,000 ohm.

Programmable Measuring Current
The measuring current is a maximum 10 Amps on the lowest ranges and may be programmed between 10 and 100% in 1% steps. This ensures that whatever specification you are testing, the DO5000 can be configured to your requirements

Programmable Hi/Lo limits
Hi/Lo limits may be set with audible (beeper) and visual (red/green panel lamps) indicating if the measured values are outside the limits. In addition if one of the interfaces is fitted a signal is available to control other equipment.

Automatic Temperature Compensation
Automatically compensates the measured resistance value for temperature, referencing the value to 20°C, particularly useful when measuring materials which have a relatively high temperature coefficient.

Digital Calibration
The calibration of the DO5000 is all digital with no need to open the instrument. All adjustments are made via the front panel keyboard ensuring low cost of ownership. The calibration is protected with a password and the date of the last calibration is recorded.

Data Logging
The DO5000 has the ability to store up to 4000 readings with date and time stamp. From the stored values max, min, average values may be displayed together with a calculation of the standard deviation.

High Accuracy Large LCD Display
The measuring accuracy ±0.03% ensures the highest quality of measurement.

Measuring Current
The measuring current may be selected for forward (+I), reverse (-I) or auto average mode which automatically switches the current and displays the average reading. This further enhances the measurement accuracy and reliability eliminating errors due to thermal emf.

Fast Measuring Mode
The normal measuring speed is approximately 2 measurements/second, for automated testing where speed is important a FAST mode is available which measures at 50 measurements/second, ideal for production lines.

Open Circuit Voltage Limit
To comply with some testing standards for switches it is possible to limit the open circuit voltage to 20 or 50mV.

Interface Options
For those wishing to automate their resistance measurements three interfaces are available. The RS232 and IEEE-488 interfaces are fully talk/listen and generally conform to the SCPI standard. The PLC interface carries all the connectors required to perform measurements and include potential free relay contacts for limit pass/fail and analogue output.

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