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GE calibrator gets HART

02 November 2009

GE Sensing & Inspection Technologies has incorporated HART capability in its hand-held DPI620 advanced multifunction calibrator. GE claims the product is currently the only product on the market that is a combined HART communicator and calibrator.

DPI620, HART version
DPI620, HART version

The rugged and compact instrument, which is weather-proofed to IP 65, contains a complete library of registered HART device descriptions to support more than 1000 sensors. Upgrades can be downloaded from the GE Sensing & Inspection Technologies website. The product is aimed at the oil and gas, power generation, utilities and process industries, as well as in the laboratory and on-plant.

Mike Shelton, product manager at GE Sensing & Inspection Technologies, explains: “Unlike competitive HART communicators which can only be used for configuration, commissioning and maintenance, the new DPI 620 is also recognized as one of the most accurate and versatile calibration systems available. Consequently, plant engineers and technicians can now considerably reduce the inventory of equipment they have to carry to perform maintenance and calibration tasks, as for the first time they can use a communicator which is also a calibrator.”

The new communicator/calibrator has a full colour, high resolution touch interface and a large internal memory, allowing it to store additional features such as procedure and datalog files. These can be transferred using USB, WiFi, memory stick or the instrument’s memory card, which can be up to four GB, with its integral card reader. Features new to HART communicators include an integral 24V loop power supply to energise HART devices and loops and a menu-selectable 250 Ohm loop resistor, rather than a separate physical resistor, for use when a device is not connected or the loop is switched off.

The incorporation of a calibrator within the communicator means that there is no need to carry ancillary equipment such as multi-meters to measure mA when trimming sensors and there is naturally no need for secondary calibration equipment during sensor trim and device calibration.

The DPI 620 also has the capability to automate calibration procedures and document “As Found” and “As Left” results and can analyse device trends to support preventative maintenance programmes. It is available in a Windows CE version with standard Windows applications and file management and the computing power to view pdf files and jpeg images such as loop diagrams, data sheets, safety procedures, spreadsheets and to create text documents.


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