Current output transmitters for use in applications for measuring pressure of high temperature steam such as sterilizing autoclaves, food processing and power generation. These current signal output pressure transmitters include integral cooling features for protecting the transmitter electronics from steam temperatures which would otherwise cause damage to standard industrial pressure transmitters.
DMP331P Hygienic Flush Pressure Transmitter - Sanitary pressure sensor wth exposed diaphragm with no crevices for high temperatures up to 300 Degrees Celsius in ranges from 100mb up to 40 bar gauge or absolute
DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor - All in one electronic switch, gauge and sensor designed specifically for use in the food, drink and biomedical industry for measuring process pressures.
DMK331P Flush Diaphragm Pressure Sensor - Screw-in pressure transmitter with flush stainless steel 316L diaphragm for measuring pressures of fluids with very high viscosity from 900 up to 6000 psi
35X HTC High Temperature Digital Pressure Sensor (< 300 degC) - The 35X HTC high temperature digital pressure sensor is suited for media temperatures up to 300 °C
35X HTT High Temperature Compensated Pressure Sensor - Pressure sensor for applications in bio-reactors or autoclaves. The transmitter is compensated up to 150 °C and may be operated continuously or sterilised at this level, including the conditioning electronics up to 120°C.
DS201P High Range Flush Pressure Gauge, Switch and Sensor - High pressure sensor, electronic switch and digital gauge with an all welded stainless steel flush diaphragm for high viscosity liquids.
- 16 bar, 200°C steam pressure transmitter and gauge
- Autoclave pressure sensor and display with 10 bar range
- 320 degF steam temperature, 100 psi pressure transmitter
- 10 bar g steam pressure transmitter
- 25 kg/cm2 high temperature steam pressure transmitter
- Saturated steam pressure transmitter for 185psi max pressure & 392F max temp
- 10 barg range 4-20mA output steam pressure sensor for food processing use
- 150psig range 4-20mA high temperature pressure sensor for steam generator system use
- 20 barg 4-20mA output 200degC steam pressure sensor for process control use
- 10 bar g steam pressure transmitter and indicator
- 270 degC steam pressure sensor with a 60 bar range
- 25 psi steam pressure measurement with a transmitter & display
Contents
Product Help
Steam temperature
Is steam temperature always the same value?
Under standard atmospheric conditions water turns to a gas and produces steam at a temperature of 100 degC / 212 degF, however this boiling point temperature is dependent on the pressure. As the pressure increases, the point at which water turns to a gas is a higher temperature. For example at a pressure of 10 bar gauge, the temperature at which steam is produced is 184 degC / 363.2 degF.
Maximum operating temperature
What is the highest operating temperature limit of the pressure transmitter?
When specifying a pressure transmitter for use on steam, it is important to determine the steam temperature by using a published table, online calculator or formula. At higher pressures it will become increasingly difficult to find suitable pressure transmitters because many will not have a sufficiently high enough maximum operating temperature.
Higher temperature steam protection
How are pressure transmitters protected from steam at higher temperatures?
Many of the pressure transmitter technologies that are widely used by manufacturers are not suitable for direct contact with high temperature steam, with typical operating limits from 100 to 125 degC / 212 to 363.2 degF. Therefore it is necessary to add protection components between the pressure transmitter and steam to act as a heat sink to cool the media in close proximity to the transmitter.
The high temperature protection components vary in mechanical design; some allow the steam to pass through, whilst others will isolate the steam using an oil filled isolation diaphragm seal. The majority of these design concepts rely on providing sufficient surface area of thermally conductive material to make contact with the surrounding cooler ambient air, and a restriction to reduce steam volume or a membrane to block it altogether, to increase the cooling effect.
Checklist for steam pressure transmitter requirements
Define your steam pressure transmitter requirements using this checklist:
- Pressure range?
- Current output type?
- Accuracy?
- Electrical connection?
- Media type? Steam
- Maximum media temperature?
- Maximum ambient temperature?
- Process connection?