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                        Current Monitors

Since 1955, Pearson Electronics has been manufacturing wide band high precision
 current transformer products

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Pearson Electronics is the original and leading manufacturer of precision current-monitoring transformers used for accurate AC current measurements. The company was founded in 1955 by Dr. Paul Pearson, inventor and patent holder, of the precision wide-band current transformer. The Pearson design plus careful workmanship and quality control produce current monitors with excellent frequency response and amplitude accuracy. Originally developed for measuring pulse-currents, Pearson Current Monitors™ are now also widely used to measure more complicated transients and periodic signals from a few Hertz to well into the megaHertz region.


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WIDE BAND CURRENT MONITORS
Whether you are interested in observing and measuring submilliamp currents in a charged particle beam or thousands of amps resulting from a fault in a major power feeder, you will find a Pearson current monitor to suit your needs. The use of our patented distributed termination technique permits pulse-current monitoring of rise times as short as two nanoseconds. Our current sensor devices of larger inner diameter make possible high voltage current measurement without the risk of voltage breakdown. Several of our current transformer models feature double shielding for greater noise immunity and increased safety in high voltage applications. All models are sealed and are suitable for use in high voltage insulating oil or under vacuum. They can be connected to oscilloscopes, spectrum analyzers, power analyzers, digital voltmeters, analog-to-digital convertors, and a variety of other measuring instruments. Details of products available

Clamp on Current Monitors
Accuracy ±1% or better, initial pulse response for all models, with a high impedance load such as 1 megOhm in parallel with 20 pF. A 50 Ohm termination will reduce the output to half. All models listed below come with a BNC connector except as noted and are to be used with a 50 Ohm coaxial cable. The current monitor case is conductive and not insulated. Adequate insulation must be provided on the conductor being monitored. To avoid electrical shock, do not mount or remove the current monitor from a live conductor. Details of products available

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Custom Current Monitors
Accuracy ±1% or better, initial pulse response for all models, with a high impedance load such as 1 megOhm in parallel with 20 pF. A 50 Ohm termination will reduce the output to half. All models listed below come with a BNC connector except as noted and are to be used with a 50 Ohm coaxial cable. The current monitor case is conductive and not insulated. Adequate insulation must be provided on the conductor being monitored. To avoid electrical shock, do not mount or remove the current monitor from a live conductor. Details of products available

Capacitive Voltage Dividers
Pearson high voltage coaxial capacitive voltage dividers permit measurements up to 500kV when used in high voltage insulating oil.

Customized division ratio and calibration for use in air are available. See the table below for model specifications. Details of products available

Full range pf Pearson products can be found here

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Address

Alrad Instruments Ltd,
Alder House, Turnpike Road industrial Estate, Newbury, Berkshire RG14 2NS

Contacts

Email: sales@alrad.co.uk
Phone: 01635 30345
Web www.alrad.co.uk

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