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The various possible configuration levels for a pressure measurement solution aren’t defined conceptually in any standard. At WIKA we have chosen the next terminology:
Pressure sensor (Pressure transmitter)
Pressure sensor (pressure transmitter)
A pressure sensor (also pressure transmitter) delivers a standardised, processed signal within a housing with commonly available pressure connection and electrical connection. Typically, it can be coded and ordered as a catalogue product and thus supplies the customer with a plug-and-play solution. Nevertheless, customised versions are possible when supported with a corresponding ?business case?.
Pressure sensor module
Pressure sensor module
A pressure sensor module is designed for OEM applications. It delivers a standardised and calibrated signal, but could be customised with regard to connections and size. EMC protective measures must be arranged in the client application.
Sensor elements and their assemblies
Sensor elements and their assemblies
Sensor elements and their assemblies deliver an uncalibrated signal in mV/V and may be made to suit the client through corresponding modifications of the pressure connection or addition of a case etc. Here the client is in charge of the calibration and therefore for the accuracy achieved.
A tabular comparison summarises the options for pressure sensors:
Pressure sensor/
pressure transmitter
Pressure sensor module
Pressure sensor element incl. assembly
Processed, calibrated output signal
yes
yes
no
EMC protection
yes
no
no
Integration effort
low
medium
high
Sensible for annual quantities
from 1
> 250 ? 500
> 1000
As is shown in the table, specific sensor modules and assemblies with sensor elements require an intensive coordination between the customer and the sensor supplier. And discover the best possible solution, a joint ?value innovation workshop? can provide a good solution.
Note
More info on engineered solutions in the field of pressure measurement can be found on the WIKA website.
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