Improved communications for gas detectors
A
Detector Electronics (UK) product story
Edited by the Engineeringtalk editorial team
Jun 8, 2004
Detector Electronics has added a range of remote communications options to its Pointwatch, Pointwatch Eclipse and OPECL Open Path Eclipse IR combustible gas detections systems.
Detector Electronics has added a range of remote communications options to its Pointwatch, Pointwatch Eclipse and OPECL Open Path Eclipse IR combustible gas detections systems.
The added system flexibility meets oil and gas industry requirements with regard to signalling protocols, visual display features, testing, diagnostics and calibration functions and is offered in a variety of configurations ranging from Hart digital communications to traditional analogue and discrete contact output signals.
Hart's power to deliver maximum diagnostics and backwards compatibility with installed instrumentation is harnessed by the Eclipse products including an on-board intrinsically safe Hart communication port.
For maximum flexibility, a new Hart port replicator kit is now available that enables safe and convenient communication access for comprehensive testing, diagnostic or calibration functionality.
Stand-alone product configuration options now supported include a permanently installed eye-level digital display of detected gas concentration suitable for Zone 1 hazardous areas and the choice of discrete programmable alarm contact outputs to drive emergency response system devices, both achieved by coupling the detector with a Det-Tronics U9500H Infiniti transmitter.
A simpler option now also available provides a reliable analogue signal to a gas detection safety system in stand-alone operational mode, with device power supplied to the installed detector and the signal output routed to the receiver as required.
Full detector status and diagnostics information is provided on the analogue signal below the 4mA signal output level.
PIRTB series remote calibration enclosures enable remote initiation of stand-alone detector calibration and eliminate the need for specialised calibration equipment and safety gear.
Although Det-Tronics PIR gas detectors are self-monitoring failsafe units not requiring routine calibration, users can conduct gas response bump tests or calibrations conveniently and safely in hazardous-related areas using different methods.
These now include local onboard calibration initiation using a hand-held magnet, remote magnetic calibration using the Hart communication and remote calibration using RS485 Modbus communication.
To further enhance speed and convenience, fixed calibration gas tubing can be routed alongside the field cabling to the detector.
This quickly delivers compressed test/calibration gas to the detector from a safe location and gives true one-person test and calibration functionality.
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