PTM.MT/N/Ex – Programmable Level Transmitter ATEX for maritime applications


  • Pressure measuring range: 0 … 0,4bar / 0… 1bar / 0 … 2,5 bar / 0 …4 bar / 0 … 6 bar
  • Rangeable for any measuring range via software
  • Accuracy: ≤ ± 0.25 % FS
  • Operating temperature: -20…100 °C
  • Process temperature: -20…100 °C
  • Output signal: 4…20 mA
  • Materials: Titanium

Customer Benefits 

  • Certificates: ATEX, IECEx and DNV-GL
  • Static accuracy available of 0.25% FS
  • Hysteresis and repeatability better than 0.01 %
  • Gauge and absolute versions available
  • Piezoresistive technology suitable for static and dynamic pressure measurements

Innovative pressure, level and temperature measurement in hazardous areas with only one flexible transmitter

Pressure and level measurement is indispensable in numerous application areas and usage scenarios. With the innovative parameterizable pressure transmitters of the PTM.MT/N/Ex series from the Swiss company STS Sensor Technik Sirnach AG, users are equipped for all eventualities.

Pressure measurement is indispensable in many working areas. This is especially true in potentially explosive atmospheres, where overpressure can have serious consequences. Here, the use of suitable pressure transmitters is essential. Classic areas of application for pressure measurement are also found in environmental and food technology. The same applies to level measurement, for example in wastewater and sewage treatment plants. Here, too, it is imperative that processes are monitored by precise measurements in order to control the risks associated with them and to optimize processes.

Always properly equipped with one device

On-site measurement in line with requirements is a particular challenge. If a permanently installed transmitter has to be checked or replaced, or if a level measurement has to be carried out spontaneously on site – for example, in a wastewater treatment plant – this can only be done if a transmitter is readily available that is suitable for the respective application.

The parameterizable pressure and temperature sensors from STS Sensor Technik Sirnach AG for hazardous areas can be precisely adapted to the operating conditions on site. Where previously specialists had to carry a large number of different transmitters in order to always be properly equipped at the site of operation, one variable device is now sufficient.

Any transmitter installation is possible

The PTM.MT/N/Ex transmitters measure relative pressure from 0-100 mbar up to 0-4 bar or absolute pressure from 0-700 mbar up to 0-6 bar. The measuring range can be individually set on site via a modem. A large selection of adapters and mounting accessories allows any type of installation of the transmitter. For versatile use, it is combined with cables between 3 and 35 m length.

The housing of high-quality titanium in combination with Teflon cables allows the use of the transmitter even in aggressive media such as salt water or acids.

Strong even in maritime applications

A preferred field of application for STS transmitters is level determination in tanks in maritime applications. Here, one transmitter can be used to measure all liquids relevant on board, from fuels and oils to drinking water and waste water. A special highlight and unique selling proposition is the simultaneous possibility of temperature measurement over a measuring range from -20 to 100 °C.

Conclusion: Thanks to its versatility and easy adaptability to a wide range of operating conditions and requirements, the PTM.MT/N/Ex is the optimal spare part for numerous application scenarios.


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