The AA04A Absolute General Purpose Baratron® Pressure Transmitter offers superior temperature compensation, a dual electrode design, and an ambient operating temperature of up to 100°C. For ambient operation temperatures beyond 50°C, contact MKS applications for calibration requirements. The precision design and manufacturing permits an accuracy specification as a percentage of output reading, rather than in terms of Full Scale reading. The AA04A is the RoHS replacement for the MKS 230E absolute pressure transmitter. There is no change to the sensor or the parts and materials in the wetted path.