Application Alley Electrometers - Reed Relays Electrometers Use Reed Relays in Their Detection Circuits
Electrometers are used to measure ultra low currents at the sub-pico amp level. These elec-trometers are often used in radiation detection, where the radiation going through a gas cylinder ionizes the gas it comes in contact with. Ultra small currents are generated from the ioniza-tion, they need to be detected, switched into an operational amplifier, and then quantified for an early alert of the radiation level. Semi-conductors have too much capacitance literally ‘swallowing up’ these signals. Electromechan-ical relays have too much leakage current and the film buildup on the contacts that needs to be broken for current to flow, never happens with these small signals. The only switch that can handle this environment is the Reed Relay. Standex-Meder’sspecially designed reed relays meet the requirements necessary to switch and carry this low signals.
Features:
•High quality and reliability
•Very small size
•Insulation resistance > 1014 Ohms
•Capable of switching and carrying fempto amps
•Dielectric strength across the contacts 200volts
•Contacts dynamically tested
•Low stable contact resistance
•Long life with up to a billion reliable operations
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[ systems that are switching an assortment of signals from DC to 15 GHz ] |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2017/02/23 |
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1.9 MB |
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