The 623 is a High Accuracy, Dual Input Autoranging Digital Manometer with Three Decimal Place Resolution.
0.001 inH2O/kPa resolution to +/- 9.999 inH20/kPa input
High accuracy +/-0.02 inH2O less than 2 inH20; 1% above 2 inH20
Overpressure protection to +/- 50 inH20
Trim mode to stabilize fluctuating pulse readings
Seven units of measure
Manufacturer Part Number