A new range of pressure transmitters manufactured by the Swiss company, Keller is now available from Bestech Australia .
Keller’s 23 SY/ 25 Y pressure transmitters offer a distinctive advantage with their extremely small temperature error capability. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields 1.5 Kelvin wide.
The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the analogue signal path depending on the temperature.
Each temperature value is the ‘calibration temperature’ for the specific transmitter resulting in high accuracy.
Keller pressure transmitters can withstand strong electromagnetic fields making them suitable for these environments. The limits of the CE standard are undercut by a factor of up to 10 with conducted and radiated fields.
The pressure transmitters are available in various models with differing constructions and measuring ranges.
Floating mounted sensors with internal O-ring are used for low ranges of 0.2 to 2 bar, while fully welded sensors have ranges of 0.5 to 1000 bar, including the flush diaphragm models.
Additionally, the pressure sensors can be absolute, barometric or gauge (positive or negative pressures). Output is analogue in either voltage or current form.
These temperature compensated pressure transmitters are available in Australia and New Zealand from Bestech Australia.