Dwyer 490A-4 Hydronic Differential Pressure Manometer

Dwyer 490A-4 is a hydronic differential pressure manometer with a temperature range of 32 to 140°F. It offers high accuracy of ±0.5% FS in the temperature range of 60 to 78°F and ±1.5% FS in the temperature range of 32 to 60°F and 78 to 104°F. It operates on a 9V alkaline battery and has a 0.42" 4 digit LCD display. The wetted materials include 316L SS and various other components. It has a pressure limit as per the chart on the catalog page and comes with two 1/8" female NPT process connections. With a hysteresis of ±0.1% FS, it is suitable for use with compatible gases and liquids.

Specifications
Manufacturer	Dwyer
(Instrument-Sensor) Measurement Accuracy	0.5%
(Instrument-Sensor) Application	Liquid
(Instrument-Sensor) Application	Gas
(Instrument-Sensor) Temperature Range	32 - 140°F/0 - 60°C
(Instrument-Sensor) Measurement Accuracy	1.5%
(Instrument-Sensor) Supply Voltage	9 V Battery
Component	Differential Pressure Manometer