Compact convertors isolate and transmit
An
Amalgamated Instrument product story
Edited by the Engineeringtalk editorial team
Aug 7, 2003
Up to four channels of conversion and isolation capacity are now available in a standard DIN rail mount enclosure.
Up to four channels of conversion and isolation capacity are now available in a standard DIN rail mount enclosure.
Models are available to take input from RTD temperature sensors, three-wire slidewire sensors, AC voltage (up to 250V AC) or AC current (up to 5A AC) and convert them to an isolated 4-20mA output.
Another model takes an analogue DC milliamp current or DC voltage and transmits it as a scalable, isolated 4-20mA output.
The products are designed to be powered by a two-wire 4-20mA loop.
The devices are extremely compact.
Up to four channels can be housed in an enclosure measuring 44 x 91 x 135mm that mounts on a standard DIN rail.
These isolators can be ordered in the capacity required.
An optional dual-output 24V DC power supply is available to "slot into" the case with one- or two-channel models.
The same power supply is available as a stand-alone unit for the three- and four-channel convertors if required.
These power supplies are only required in situations where the processing equipment cannot provide a loop voltage.
Isolation is 2kV between input and output on the AC models and 1kV on the other models.
Signal isolation is achieved using optoisolators.
These isolator/convertor/transmitters offer a compact, economical solution to conversion and retransmission requirements for a host of applications.
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