Application for Rheotherm and RheoVac Instruments

Instruments for Hazardous Locations

Model 210 Flow Meters for Hazardous LocationsIntek offers a line of flow meters and switches in a variety of configurations to meet the most demanding industry needs. Rheotherm instruments are commonly installed in hazardous (classified) areas through Factory Mutual (FM) approved integrated designs, FM-approved intrinsically safe barriers (ISB) to isolate the flow sensors, NEMA 7 enclosures, and purged enclosures.

Flow Meters for Hazardous Locations

The Model 210 Flow Meter is available with an FM-approved explosion-proof design for use in measuring both liquids and gases. In this configuration, the flow sensor is integrated with the flow meter electronics. The Rheotherm sensor is designed for operation in hazardous environments and the electronics is supplied in an explosion-proof NEMA 4X enclosure. The unit is available with or without an integrated LCD display and in both insertion probe and inline sensor configurations.

Model 210 Flow Meters with ISBRheotherm Flow Meters for hazardous locations are also available in a remote electronics configuration where the electronics can be remotely located from the sensor by up to 200 feet. The sensor is connected to the electronics through an ISB which provides the necessary isolation of the electrical components. It is also available with or without an LCD display and with both insertion probe and inline sensors. This configuration is often required where space is limited or when instrument options such as AC power and certain other types of outputs are desired.

Flow Switches for Hazardous Locations

Rheotherm Flow Switches can also be installed in hazardous areas using Intek’s proprietary, FM-approved intrinsically safe barrier. The sensor of the Model 100FS Flow Switch is installed in the hazardous location with the electronics and the ISB located either in a non-hazardous remote area, or within the hazardous area if installed in a NEMA 7 explosion-proof housing. A purged enclosure may also be used in areas which require maximum explosion protection.

Area Classifications for Rheotherm Instruments

 Model 210 Flow Meters
Integrated Electronics Class I, Division 1, Groups B, C, and D
Class II, Division 1, Groups E, F, and G
Class III, Division 1
Remote Electronics Same as above, except Group A is included.
 Model 100FS Flow Switches
Remote Electronics Only Class I, Division 1, Groups A, B, C, and D
Class II, Division 1, Groups E, F, and G
Class III, Division 1

Need Additional Information?

If you have additional questions regarding the use of Intek systems in hazardous locations, use the form on this page to submit your questions, or visit our contact us page for telephone, fax and email information.

pdf (1) Rheotherm FM Options for Hazardous Locations brochure


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