Dwyer Omega – Series 490A Handheld Hydronic Differential Pressure Manometer, Adjustable Damping
Product Code: Series 490A
Manufacturer: Dwyer Omega
The Series 490A Hydronic Differential Pressure Manometers are versatile, handheld, 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.
Accuracy
± 1.5 %
Accuracy Detail
± 0.5% FS, 60 to 78°F (15.6 to 25.6°C); ± 1.5% FS from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C)
Applications
Oil, Pump Control, Refrigeration, Refrigeration Equipment
Battery Size and Type
Alkaline 9V
Display Note
0.42″ (10.6 mm) 4 digit LCD
Display Type
LCD
Hysteresis
± 0.1%
Materials, Wetted
316L Stainless Steel
Media Compatibility
Alcohols, Argon, Compatible Gases, Compatible Liquids, Nitrogen, Oils, Water
Number of Digits
4
Operating Temperature, Max
140 °F
Operating Temperature, Min
32 °F
Port 1 Size
1/8 in
Port 1 Type
NPT Female
Measurement Pressure, Min
0 psi
Measurement Pressure Type
Differential
Storage Temperature, Max
176 °F
Storage Temperature, Min
-4 °F
Supply Power Note
9 V Alkaline Battery, Installed non-functional, User Replaceable
Supply Power Type
Battery
