The pressure transducer uses a vented cable for error-free compensation of barometric pressure changes.  Incorporated electronics compensate for non-linearity and temperature variations in a wide range, resulting in increased accuracy.

SDI-SPT Specifications

Accuracy: 0.05% of full scale
Overpressure: 3 to 6 times (depending on the range)
Temperature Influence: typical 30 ppm/°C of full scale in temperature range, maximum <50 ppm/°C

Power Requirements: Less than 30 mAh a day (4 measurements per hour)
Power Supply: 7.5 V DC to 28.8 V DC
Range: -4°F to +158°F (-20°C to +70°C)