Cropico Microhmmeter Digs Deep At Quarry Electrical Safety Testing House

Bureau Veritas has extensive UK coverage, providing safety testing and risk assessment services for national and international manufacturing and industrial clients. The company has been used by organisations since 1828 to ensure compliance with health and safety regulations and to manage risk factors on work sites.

Electrical circuits installed within quarries, must be tested in order to ensure no damage during installation and in service. A low resistance microhmmeter, with a 10A test current, is essential for testing such as this, due to the low resistance of the cables, which cannot be accurately tested using a regular ohmmeter.

Bureau Veritas has specified the DO7010 to inspect the safety of these circuits because if left unchecked, they can continue to function but offer a high risk of fire or electric shock - extremely dangerous to those working on site.

Mahendra Mistry, electrical engineering specialist at Bureau Veritas, said: “The accuracy of the DO7010 was a key factor in my decision to use it for testing the quarry installations.

It’s also an extremely reliable instrument while being portable and easy to use. It meets all of our requirements.”

The DO7010 has been developed for a wide range of electronic engineering, design and manufacturing applications requiring accurate low resistance measurement.
With a measuring range of 600µΩ to 60Ω with 0.1 and 10mΩ resolution respectively, the instrument can measure with switchable current levels of 1A or 10A on all except the highest range. Externally recharged NiMh battery packs can be replaced quickly via the front panel to ensure minimum downtime anywhere.

An LCD panel displays full information on measurement configuration and a single start button ensures ease of use while the ability to trigger measurements by lead contact to the test device provides fast single-person operation. A remote hand terminal is also available to fully control the tester at up to 15m distance.

Other features include a robust design, true 4-terminal measurement to eliminate lead resistance errors, auto average of forward/reverse measurement and sequence testing with memory for 1000 readings.

The instrument’s data logging function also permits downloading of test sequences from a spreadsheet and uploading of test results back to the data records. The DO7010 forms part of a comprehensive range of precision measurement instruments available from Cropico, part of the Seaward Group.