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Fluke’s DH Instruments Division has added the Molbox1+ flow terminal to its Molbloc/Molbox gas-flow calibration system, resulting in improved accuracy.

The new Molbox1+ flow terminal enables users to achieve +/-0.125 per cent of reading flow-measurement uncertainty, while an added Molbox terminal configuration, Molbox1+S, improves high flow rangeability and versatility without the need for vacuum pumps.

The Molbox1+ flow terminal is the heart of the Molbloc/Molbox gas-flow calibration system.

It performs the data acquisition and processing functions necessary to precisely determine the flow through a connected Molbloc flow element.

The Molbloc-L laminar flow elements and Molbloc-S sonic nozzle flow elements are offered in different flow-path sizes to cover a variety of flow ranges from 1sccm to 5,000slm.

This combination of precision and wide coverage range in a single system makes it possible for customers to replace multiple traditional volumetric flow standards and use a consistent software interface and reporting function for both low and high flows.

The new Molbox1+S configuration makes it easier and less costly to perform high flow calibrations using Molbloc-S sonic nozzle flow elements.

With Molbox 1+S, each Molbloc-S element can cover a wider range (10:1 range turndown) without requiring vacuum pumps.

The system is viable for in-situ flowmeter calibrations because it fits easily on a calibration cart.

DHI offers a full suite of software-automation products.

Hardware accessories are available to complete the flow-calibration system, including Compass calibration-assistance software, devices for unit under-test control and Readback.

Fluke Calibration

Fluke Corporation was founded in 1948, specialising in electrical test and measurement products. Early in its history, Fluke recognised that the very best electrical metrology would be needed to support its products and undertook to develop this capability. From this activity, the calibration business was born. Over the years, many breakthrough calibration products were introduced, establishing Fluke as a leader in electrical metrology.

In 2000, Fluke acquired Wavetek Precision Measurement. In 2001, Fluke’s calibration business expanded into the temperature field with the acquisition of Hart Scientific and then into pressure and gas flow with the acquisition of DH Instruments (2007), followed by Ruska and Pressurements (2010).

The unified business’s unmatched breadth and depth in metrology puts Fluke Calibration in a unique position to deliver today’s and tomorrow’s calibrations solutions to customers who demand the very best, supported by an organisation they can count on for the long term.

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