High temperature pressure transmitters with a 4-20mA output, tolerant to high temperature applications such as steam, food processing & engine monitoring. High temperature pressure transmitters are used in applications where the media temperature exceeds the temperature limits of standard pressure transmitters or where it is not possible to fit a stand off pipe, pigtail or other cooling device to reduce the media temperature.
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
ATM/T Pressure and Temperature Dual Output Transmitter - Dual analogue output signal transmitter for simultaneous measurement of media pressure and temperature. Pressure 100mb - 1000bar and temp -25 - 100 DegC.
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.
- 300°C max temperature, 0 to 300 bar, high range pressure sensor
- 16 bar, 200°C steam pressure transmitter and gauge
- 300 degC tolerant pressure transmitter for pressures up to 100 kPa g
- Autoclave pressure sensor and display with 10 bar range
- 320 degF steam temperature, 100 psi pressure transmitter
- 10 bar g steam pressure transmitter
- Diaphragm sealed high temperature pressure transmitter for -1 to 25 kg/cm²
- 180°C UHT milk compatible pressure transmitter
- 25 kg/cm2 high temperature steam pressure transmitter
- Saturated steam pressure transmitter for 185psi max pressure & 392F max temp
- High temperature oven 2 bar range pressure sensor & data logger
- 20 barg range 4-20mA output 300degC hi-temp air pressure sensor for aerospace testing use
- 10 barg range 4-20mA output steam pressure sensor for food processing use
- 6 bar absolute range 4-20mA output high temperature epoxy resin pressure sensor for research 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
- Minus 30 inHg 4-20mA air pressure sensor for measuring vacuum in a sealed tank heated to 350F
- 800mbar absolute range 4-20mA output high temperature protected OEM pressure sensor
- 10 bar g steam pressure transmitter and indicator
- Seawater solution 60 inH2O hydrostatic pressure sensor for 190degF temperature
- High media temperature tolerant transmitter for high range pressure
- 160 bar g pressure transmitter for use with high temperature media up to 300 degC
- 270 degC steam pressure sensor with a 60 bar range
- Hot oil pressure transmitter & display to read up to 5 bar at 300degC max
- 90 degC air differential pressure transmitter and digital display
- 25 psi steam pressure measurement with a transmitter & display
- Measuring steam pressure up to 10bar with analog/digital output
- 300 F protected 100 psi pressure transmitter
- 10 bar absolute 4-20mA natural gas pressure sensor for high temperature research use
- High temperature 4.0 bar absolute range 4-20mA output steam pressure sensor for sterilizing use
- 10psig 4-20mA oily wastewater pressure sensor with hi-temp protection for tank level gauging use
- 5 barg 4-20mA output pressure sensor for steam sterilization up to 150C/300F
Contents
Product Help
Specifying pressure transmitters for high temperature use
Process temperature
What will be the maximum process temperature reached in your application?
The sensor technology utilised in pressure transmitter has an operating temperature range which is adequate for most applications, but there are some which will require additional components to protect the sensor from heat damage.
Cooling mechanism
Typically the design approach is to reduce the temperature in the vicinity of the pressure transmitter by incorporating a mechanical cooling assembly to dissipate the heat.
The cooling assembly maybe filled with oil and separated from the process media by an isolation diaphragm.
Alternatively the cooling assembly can include hollow tubing shaped to increase heat transfer, which causes the process media allowed through, to reduce to a much lower temperature.
The choices of cooling mechanism fall into the following categories:
Add-on cooling adaptor
Add-on compact process media filled cooling adaptor with coiled capillary, hollow discs or fins for increasing surface area to act as heat sink for medium temperature protection.
Integral cooling element
Integral oil-filled isolation diaphragm seal shaped to increase surface area between sensor and isolation diaphragm to increase efficiency of cooling and provide for high temperature protection.
Capillary tube cooling
Integral oil, mercury or other fluid filled capillary with a long length and small diameter for extra cooling in very high temperature processes.
Ambient temperature
What will be the range of temperatures surrounding the pressure transmitter where it is installed?
This is an important consideration when dealing with high temperature processes or surrounding environments.
In applications where the process temperature is high, it is possible to use a pressure transmitter with a built-in cooling mechanism. This cooling mechanism often relies on the conduction and dissipation of heat to the surrounding air around the pressure transmitter. Therefore it is essential the ambient air temperature is lower than the process temperature. Also since the rest of the pressure transmitter connected to the cooling component is not protected from high temperatures, the ambient temperature should be lower than the device operating temperature range. This will ensure an efficient heat sink and protect the electronic components from thermal damage.
When it is not possible to install the pressure transmitter in a lower temperature environment, it is then necessary to use one that is completely protected from high ambient or process temperatures. These types of high temperature pressure transmitters do not need any cooling mechanism, and all components including the sensing technology, conditioning electronics, solder, adhesives, connectors and cables are rated to the maximum operating temperature.
Checklist for high temperature pressure transmitter requirements
Define your high temperature pressure transmitter requirements using this checklist:
- Process temperature?
- Cooling mechanism?
- Ambient temperature?
- Pressure range?
- Output signal? 4-20mA
- Electrical connection?
- Process connection?
- Process media type?