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Intrinsically Safe Pressure Calibrator | Martel

Supplier: Zedflo Australia

Zedflo are now supplying approved intrinsically safe versions in the Martel family of advanced pressure calibrators.

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The BetaGauge 311A-EX is a single sensor calibrator and 321A-EX a dual sensor model, allowing differential measurement. Classified hazardous area approvals include IECEx and ATEX certification for world-wide use.

In addition to the approval to safely use the calibrators in hazardous areas without “hot work” permits, the EX versions include a new ClearBrite™ graphic LCD with intense backlight for a crisp and easily read black on white display.

The familiar Martel 3 key user interface (UI) is supported by a multi-mode operating system that allows a range of operations from simple measurements to very complex calibration applications such as natural gas custody transfer calibration.

As in the standard units, the calibrators are available in the user's choice of 25 available pressure ranges from 10” WC (2.5 kPa) to 10,000 psi (68 MPa) in compound, gauge, differential and absolute modes. The user can choose from 19 built-in engineering units and specify up to 2 custom units at the time of order.

The ability to measure up to 24 mA DC, at the same time as monitoring pressure, means these calibrators are all that is needed to perform a complete calibration on a pressure transmitter in the field.

Accuracy on most ranges of ±0.025% of full scale, over a wide variety of ambient temperature conditions, insures that the BetaGauge 311A-EX and 321A-EX will be useful for even the most demanding field calibration users.

Popular applications for these high performance calibrators include natural gas flow computer calibration, multi-variable transmitter calibration, calibration of all types of process pressure instrumentation and flow and level transmitters that use pressure inferred measurement techniques.

The calibrators also offer special features for the testing of pressure switches commonly used in Safety Instrumented Systems (SIS) and other control and monitoring applications. Martel continues to manufacture and supply calibrators to many of the world's biggest instrument companies.

 

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