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Dwyer Series 490A Hydronic Differential Pressure Manometer
$0.00
Product Tags:
Liquid & Gas Pressure Measurement, ±0.5% FS Accuracy
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.
Hydronic meter kit includes: (2) six foot high-pressure rated tubing with shut off valves, high pressure 3-way valve, 8 ft poly tubing for purges, hard travel case, handheld carrying strap, 1/16" x 1 1/2", 1/8" x 3" and 1/8" x 1-1/2" pairs of pressure probes, 90° Flare to 1/4" NPT fittings, adjustable 8" wrench, PTFE Tape, and magnetic protective rubber boot. NIST Calibration Certificate comes standard.
Features
- Seven user-selectable English and metric units
- Stores up to 40 readings for later recall
- Backlight for use in dim areas
- Digital dampening for low pressure - high resolution logging accuracy
- Automatic resolution adjustment for finer control
Product Applications
- Chiller to coils for freeze protection
- Hydronic valve balancing
- Measure pressure drop across pumps
- Refrigerant pressure testing
Specifications
-
Service: Compatible gases & liquids. Wetted Materials: Without valve: 316L SS, -3V option: 316LSS, Buna-N, silicone, grease, PTFE, brass 360, copper, reinforced acetal copolymer. Accuracy: ±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). Pressure Hysteresis: ±0.1% FS. Pressure Limits: See chart on datasheet Electronic Temperature Limits: 32 to 140°F (0 to 60°C). Storage Temperature Limits: -4 to 176°F (-20 to 80°C). Display: 0.42" (10.6 mm) 4 digit LCD. Resolution: See chart on datasheet Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable. Process Connections: Two 1/8" (3.18 mm) female NPT. Weight: 14.1 oz (400 g). Agency Approvals: CE.
