Intrinsically Safe Hazardous Area Transmitters IS-20, IS-21

The IS-20 series of intrinsically safe pressure transmitters are designed for industrial pressure measurement applications in hazardous areas where intrinsically safe rat-ings are required. Multiple intrinsically safe approvals include FM, ATEX and CSA. These multiple approvals provide for global recognition and acceptance of the intrinsically safe ratings. The transmitters are labeled with all three approvals to help support international shipments of OEM equipment designed with these transmitters.Rugged constructionThe stainless steel wetted parts feature an all-welded mea-suring cell for improved media compatibility. There are no internal soft sealing materials that may react with the media or deteriorate over time. The compact case is also made of stainless steel and is available with environmental protection ratings up to NEMA 6 ( IP 68).

The IS-21-S and IS-21-F transmitters feature a flush diaphragm process connection. They are specifically designed for the measurement of viscous fluids or media containing solids that may clog a NPT process connection.Types IS-20-F and IS-21-F feature an integral stainless steel junction box with internal terminal block for use in extremely harsh environments. A ½" NPT female conduit connection is standard on all models and a cable compression electrical con-nection is available as an option. All types require a 10 to 30 volt supply provided by an intrinsically safe power supply or through an approved intrinsically safe zener diode barrier.

Pressure ranges from 50 InWC to 15,000 psi

FM, CSA approval for - Intrinsically safe Class I, II and III Division 1, Group A, B, C, D, E, F, G - Dust Class II and III Division 1, Group E, F, G - Class I, Zone 0, AEx ia II C

Ex- protection EEx ia I/II C T6 according to ATEX for: Gases, vapors and mist: Connection to Zone 0, Zone 1 and Zone 2 Dust: Connection to Zone 20, Zone 21 and Zone 22 Mining: Category M1 and M2 Suitable for SIL 2 according to IEC 61508 / IEC 61511