The WIKA IS-20 and IS-21 series of intrinsically safe pressure transmitters are designed for industrial pressure measurement applications in hazardous areas where intrinsically
safe ratings are required. The transmitters carry multiple intrinsically safe approvals including FM, ATEX and CSA. These multiple approvals provide for global recognition and
acceptance of the intrinsically safe ratings.
WIKA IS-20 and IS-21 pressure transmitters include stainless steel wetted parts featuring an all-welded measuring 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-20 includes an NPT process connection while the IS-21 transmitters feature a flush diaphragm process connection specifically designed for the measurement of viscous fluids
or media containing solids that may clog a NPT process connection. Both models are available with an integral stainless steel junction box with internal terminal block for use in
extremely harsh environments.
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.
