Dwyer 490A Wet/Wet Handheld Digital Manometer, 490A-2, 0 to 30 psi (0 to 206.9 kPa)

Dwyer 490A-2 Wet/Wet Handheld Digital Manometer, 0 to 30 psi (0 to 206.9 kPa) Dwyer Series 490A Wet/Wet Handheld Digital Manometer × Product Applications Chiller to coils for freeze protection Measure pressure drop across pumps HEPA filters to determine when a filter needs to be changed Valves to determine valve position Product Features Up to 0.5% accuracy Seven user-selectable English and metric units Stores up to 40 readings for later recall Backlight for use in dim areas   Liquid & Gas Pressure Measurement, ±0.5% FS Accuracy   The SERIES 490A Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS. A new feature added to the Series 490A is a field adjustable damping, which allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications. Dimensions