Series 33 Male Pressure Port G1/4" 
Series 35S Pressure Port G1/2'', Flush Diaphragm
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These pressure transmitters have conventional analogue outputs
but are designed for industrial applications where the highest accuracy
is required.
They combine the latest technologies of both pressure sensor and
electronic compensation. The pressure sensor is a high stability
piezoresistive device designed for use in transmitters where accuracy
and stability are essential.
The sensor is selected after severe testing under pressure and temperature.
The sensing component is a micro-machined silicon chip of high sensitivity
mounted in a floating arrangement. An independent temperature sensor
is integrated on the surface of the silicon chip.
The processing electronics comprise a PlC 14000 microprocessor with
an integral 13...14 bit A/D converter and inputs capable of handling
5 signals. Conversions are performed at a rate of at least 100 operations
per second.
The pressure signal compensation uses a mathematical model based
on polynomial approximation, which provides almost perfect compensation
over the operating temperature range.
The voltage (or current) analogue output signal is generated by
a 16-bit D/A converter. The output signal is updated every 10 milliseconds.
The user can, via the RS485 interface and using a KELLER adapter
cable, set the zero and the gain of the transmitter by simple software
programming.
The transmitter has great manufacturing flexibility and can be produced
with various types of pressure connection. Among its features are
standard plates which hold the connector, enabling the same transmitter
to be supplied with different electrical connectors that can be
exchanged by the user as an option.
The Series 33 and 35S transmitters have an exceptional price/performance
ratio.
Get the data sheet
Note: data sheets are in Adobe Acrobat (.pdf) format
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