A new range of ceramic and stainless steel pressure sensors for viscous and gaseous media is available that not only withstands frequent washdowns and temperatures of up to +300degC, but is also certified for use in explosive atmosphere (ATEX, Zone 0) environments.
The DMK 331P is a ceramic pressure sensor with a flush stainless steel diaphragm suitable for viscous and gaseous media. Supplied by Impress Sensors & Systems, the sensor is targeted at process environments where viscous fluids are present, including food and dairy manufacturing, paper and pulp, water and waste treatment, chemicals and pharmaceuticals. Thanks to its ceramic housing, the DMK 331P shows excellent thermal characteristics and therefore withstands frequent washdowns with chemicals and water. Special versions of the sensor are also available with a cooling element that enables the sensor to be used in temperatures up to +300degC. Nominal pressure ranges are from 0-1 bar up to 0-400 bar. Accuracy is +/-0.5 per cent FSO (IEC 60770). A variety of electrical and mechanical connections is available.
A piezoresistive stainless steel pressure sensor, the DMP 331P has a flush pressure port made with inch, clamp and dairy pipe connections. The sensor also benefits from small thermal effects and excellent linearity. For higher process temperatures, an optional integrated cooling element can be added that enables temperatures up to +300degC. The sensor is suitable for use in ATEX Zone 0 environments. Nominal pressure ranges are from 0-100mbar up to 0-40 bar. Accuracy is 0.35 per cent/0.25 per cent FSO (IEC 60770).
Both sensors come with silicon oil as standard, but other filling oils are available, including food-compatible oils and Halocarbon. Other types of pressure ports and chemical seals are also available.