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Microhmmeters
Electri-Temp is dedicated to offering its customers the best products available from some of the most experienced and knowledgeable testing laboratories. We are aware of how important quality resistance testing is in a variety of industries and make it our job to ensure that our customers have access to cutting edge technology, value-added features, unbeatable quality and, of course- competitive prices.
 Microhmmeters provided to customers through Electri-Temp are suitable for a variety of demanding applications which require extremely low and accurate resistance measurement in settings such as workshops and test facilities. With flexible measuring, accuracy, and unparalleled functionality, our microhmmeters are ideal for testing elements such as safety compliance and fuse resistance—aspects of a variety of industries which require the attention of precise measuring equipment and can never be overlooked. With unbeatable accuracy and models available with the capability of 50 readings per second, production line testing has never been easier.
Other microhmmeter applications include:
- Measuring resistance values for quality control
- Testing fuse resistances on a production line
- Testing in automobiles in ABS braking coils
- Testing of Transformer winding
- Testing the resistance of transducers
- …and much more
We provide quality microhmmeters built to ensure that they will continually deliver consistent performance. Specifications and capabilities of microhmmeters are quite varied with some models intended for use in specific applications. The capabilities of our various microhmmeter models include:
- 4-wire measurement engineered to eliminate lead resistance and provide a precise reading
- Auto-average of forward and reverse measurement
- Auto-ranging
- Available built-in test resistor for confidence checks
- Battery life to support 1,000 readings from a single charge (Portable models)
- Desktop models with fast measuring mode accommodating up to 50 measurements per second
- Easily navigated interfaces
- Forward and reverse current measurement
- Input protection up to 415 Volts rms
- Key-protected digital calibration
- Larger models with 1 hour of portable battery at the lowest ranges and 20 hours on higher ranges
- Microhmmeters featuring a robust power supply for fast testing of large power transformers
- Microhmmeters with automatic temperature compensation with programmable coefficients
- Microhmmeters with printer output and remote start
- Models featuring rechargeable batteries with charge indicator and built-in charger
- Models which calculate cable length ohms/kilometer
- 10 Amp measuring current on low ranges
- Data logging and statistical analysis
- Measuring ranges from 60 milliohms to 600 ohms, 600 microhms to 60 ohms, 6 milliohms to 6 ohms, 3 milliohms to 30 kilohms, 2 milliohms to 2 kilohms
- Portable models with easily replaceable battery packs
- Power saving features to ensure your microhmmeter is ready when you need it
- Rugged construction
- True zero offset
MICROHMMETERS ARE LOW RESISTANCE METERS DEDICATED TO MEASURE AN OHMIC VALUE UNDER A DEDICATED CURRENT
They are based on two main circuits: an extremely stable current source + a high impedance and very accurate voltage measurement system for real 4 wire measurement method (also called Kelvin method)
Cropico Microhmmeter Range
Digital Ohmmeters and Resistance Measurement
DO6 Ohmmeter
Covering a wide range of measurements from 1 micro ohm to 200 kilo ohm, the DO6 ohmmeter is a comprehensive ohmmeter with many features incorporated as standard. These benefits include manual and automatic range selection; temperature compensation for copper, referencing the measurement of copper to 20°C; voltage limiting facility for those wishing to measure switch contact resistance to International Standards, the measurement voltage is limited to 20mV. An RS232 serial interface gives full talk / listen capability, making it simple to add to an automated measuring system. Hi / Lo limits may be set over the interface with voltage-free contacts being available on the rear panel. For those wishing to measure inductive circuits e.g. motor windings, a special protection circuit may be initiated thus avoiding any problems that may arise due to induced high voltage.
Key Features
• True 4 wire measurement eliminates lead resistance errors
• 8 push button ranges 20 milli ohm… 200 kilo ohm
• Resolution of 1 micro ohm on 20 milli ohm range
• Manual / automatic range selection
• Temperature compensation for copper and brass
• Thermal E.M.F. compensation
• Dry circuit measurement: 18mV limited
• Open circuit lead warning
• RS232 interface
• Hi / Lo limits |
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DO4002 Microhmmeter
The D04002 digital microhmmeter offers true portability without any sacrifice to accuracy or functionality. This microhmmeter is a ruggedly constructed instrument is housed in a stylish plastic case with easy to use keyboard. The measured values are displayed on a large LCD screen which allows for ease of viewing. Automatic or manual range selection is available and many advanced features are included.
Key Features
• True 4 wire measurement eliminates lead resistance errors
• 6 ranges 40 milliohms to 4 kilohms, long scale length 4000 count. Automatic or manual range selection
• Input protection up to 415 Volts rms
• Resolution 10 microhms on 40 milliohm range
• Forward and reverse current measurement with auto average
• True current Zero
• Temperature compensation Model 4001
• Temperature Measurement -50...+800 Deg.C Model 4001
• Digital calibration
• Mains / rechargeable battery operation
• Open circuit lead warning
• Rugged industrial and maintenance free design
• Rechargeable battery option
• MEIGaN Compliant |
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DO7e Microhmmeter
Technical Specifications
The DO7e is a practical low cost microhmmeter for low resistance measurement, ideal for use in the workshop, field or test facilities. This micro ohmmeter is of rugged construction, contained in a sealed ABS plastic case with lid and carrying handle.
The DO7e microhmmeter has many advanced features, including protection up to 415 volts rms at the measuring terminals, digital calibration and long scale length, 6000 count. The measuring ranges may be automatically or manually selected. Rechargeable batteries means real portability with more than 1 hour of continuous operation on the lowest ranges, and 20 hours on all others. Automatic Power Off ensures maximum battery life. The internal charger will boost charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.
The DO7e microhmmeter is supplied ready for use with batteries, mains cord and test leads, no extras are normally necessary. For special lead sets we offer a variety of different styles which are listed on the accessories page, together with calibration standards.
Key Features
• True 4 wire measurement eliminates lead resistance
• 6 push button ranges 60 milliohms to 600 ohms
• Resolution 1 microhm on 60 milliohm range
• Auto ranging
• 10 Amp measuring current on lowest range
• 0.8' LED Display daylight viewable
• Input protection up to 415 Volts rms
• forward and reverse current measurement
• Auto average of forward and reverse measurement
• Auto power off
• Mains / rechargeable battery operation
• Digital calibration pass code protected |
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DO7 Digital Microhmmeter
The DO7 digital microhmmeter 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 a sealed ABS plastic case with lid and carrying handle.
The DO7 digital microhmmeter has many advanced features, including protection up to 415 volts rms at the measuring terminals, digital calibration and long scale length, 6000 count. Rechargeable batteries means real portability with more than 1 hour of continuous operation on the lowest ranges, and 20 hours on all others. Battery charge indicators are provided. The internal charger will boost charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.
A front panel socket provides a serial RS232 output for connection to an external printer or PC, and a socket is also provided for the connection of an external start switch, e.g. a foot switch.
The DO7digital microhmmeter is supplied ready for use with batteries, mains cord and test leads, no extras are normally necessary. For special lead sets we offer a variety of different styles which are listed on the accessories page, together with calibration standards.
Key Features
• True 4 wire measurement eliminates lead resistance
• 6 push button ranges 600 microhms to 60 ohms
• Resolution 0.1 microhm on 600 microhm range
• 0.8' LED Display daylight viewable
• 10 Amp measuring current on lowest range
• Forward and reverse current measurement
• Auto average of forward and reverse measurement
• Input protection up to 415 Volts rms
• Printer output and remote start
• Digital calibration key protected
• Mains / rechargeable batteries with charge indicator and built in charger |
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DO7010 Portable Microhmmeter
The DO7010 portable microhmmeter is a practical instrument for low resistance and bonding resistance measurement, ideal for use in the workshop, field or test facilities. It is of rugged construction, contained in a sealed case.
The DO7010 microhmmeter has many advanced features including, Auto ranging, Auto power off, Auto measure trigger when leads are connected to the DUT, data logging, replaceable battery pack, Hi-Lo limits , Graphics display with backlight, and built in test resistance for confidence check.
Rechargeable NiMhd batteries means real portability with more than 1000 readings from a single charge, to ensure that downtime is minimised the battery pack can be easily and quickly withdrawn from the front panel and replaced with a fully charged unit, battery charge indicators are provided.
A front panel socket provides a serial RS232 output which may connected direct to a PC or used with the optional remote terminal which will allow operation of the DO7010 up to 15 metres distance.
The DO7010 portable microhmmeter is supplied ready for use with batteries and mains charger and a variety of test lead configurations are offered. For special lead sets we offer a variety of different styles which are listed on the accessories page, together with calibration standards.
Key Features
• True 4 wire measurement eliminates lead resistance errors
• 4 ranges 6 millohms to 6 ohms
• Resolution 1 microhm on 6 millohm range
• Graphics Display with backlight 3 languages
• 1 and 10 Amp measuring current even on the 600milliohm range
• Forward and reverse current measurement
• Auto average of forward and reverse measurement
• True zero offset
• Built in test resistor for confidence check
• Data logging with up to 1000 readings stored with date and time stamp.
• Hi-Lo limits with audible and visual warning
• Automatic measurement trigger when leads are connected to DUT
• Small size and light weight 4Kg
• RS232 interface with option remote terminal to enable operation up to 15 metres distance.
• Rechargeable NiMhd batteries with charge indicator and easily replacable battery pack |
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DO5000 microhmmeter
This new generation of microhmmeters offers flexibility of measurement with high accuracy and exceptional functionality.
The DO5000 microhmmeter 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 microhmmeter 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 microhmmeter provides the solution.
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 |
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DO5001 Digital Microhmmeter
This new generation of microhmmeters offers flexibility of measurement with high accuracy and exceptional functionality.
The DO5001microhmmeter 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 DO5001microhmmeter 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 DO5001 micro ohmmeter provides the solution.
Open circuit voltage ~ 3V dc
Powered either by mains supply or by internal rechargeable sealed lead acid batteries, the charger is also built in and the batteries will recharge whilst measurements are being made. The measuring current when used with batteries is pulsed.
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 |
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DO5002 Low Current Digital Microhmmeter
Open circuit voltage ~ 5V dc with Limit options for 20mV and 50mV
With all the functionality of the standard DO5000 but with limited measuring current and the ability to limit the open circuit voltage to either 20mV or 50mV. This model has been primarily developed to satisfy those applications where open circuit voltage and the measuring current needs to be limited. A typical application is for the measurement of switch contact resistance to conform to standards such as NFC93050.
This new generation of microhmmeters offers flexibility of measurement with high accuracy and exceptional functionality.
The DO5002 microhmmeter 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 DO5002 microhmmeter 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 DO5002 micro ohmmeter 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 DO5002 microhmmeter provides the solution.
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
|
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DO8000 Transformer Winding Microhmmeter
The DO8000 diigtal ohmmeter can measure and save more than 10,000 high resolution test results, along with transformer nameplate data. With its expansive memory, bright LCD screen, and concise reports from its built in printer, this model sets the standard in test equipment. The DO8000 digital ohmmeter can store hundreds of files, each containing a virtually unlimited number of resistance measurements, with tap and winding details, and several fields of information about the transformer, its location, and the operator. The file manager makes this information easy to locate, open, view, and print past results. The DO8000 digital ohmmeter features 4.5 digit resolution and 0.25% accuracy for precise measurement of winding resistance. Input channels have sophisticated sigma-delta D/A converters and notch filters to eliminate the effects of substation noise.
Key Features
• True 4 measurement eliminates lead resistance errors
• Wide measuringe range 2 milliohms to 2 kilohms
• Resolution 0.1 microhms on 2 milliohm range
• High accuracy 0.25% rdg + 0.25% fs
• 2 channel measurement for primary and secondary windings
• Data logging with large colour alpha numeric storage for test results
• Robust power supply for fast testing of large power transformers
• Open circuit limit mode 20mV / 50mV maximum
• Interface RS232 and USB |
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