Keller PAA-33X High-Precision Pressure Transmitter

The Keller PAA-33X is a Series 33X piezoresistive pressure transmitter built for laboratory use, test benches, gauge standards and precision industrial measurement, offering accuracy down to 0.01% FS with an RS485 interface that can run alongside its analog output.

It uses an insulated and encapsulated piezoresistive sensor chip with mathematical compensation, supports Modbus RTU for process values and configuration, lets the analog output range be adjusted (turned down) via RS485 without surcharge, covers pressure ranges from 0 to 0.3 bar up to 0 to 1000 bar, and holds a total error band of 0.1% FS across -10 to 80 degrees C.