Dwyer

490A Hydronic Differential Pressure Manometer

Versatile, handheld, battery operated manometers, up to 0.5% accuracy, backlight for use in dim areas

Starting At
$1,184.00 CAD
Normally ships in 1-2 Weeks

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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.

The Series 490A-HKIT features the 490A Hydronic Differential Pressure Manometer and all the necessary attachments and accessories to meet all your balancing, measuring, and pressure needs.  The hydronic meter kit includes two (2) six foot high-pressure rated tubing with shut off valves, one (1) high pressure 3-way valve two (2) controlled bleed valves,, one (1) 8 ft poly tubing for purges, one (1) hard travel case, one (1) handheld carrying strap, two (2) 1/16 in x 1-1/2 in pressure gage adapters, two (2) 1/8 in x 3 in pressure gage adapters, two (2) 1/8 in x 1-1/2 pressure gage adapters, two (2) male 90° flare to 1/4 in NPT fittings, two (2) male flare to 1/4 in NPT couplet fittings, one (1) adjustable 8 in wrench, PTFE Tape, one (1) magnetic protective rubber boot. NIST Calibration Certificate comes standard.

• 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
• Digital dampening for low pressure - high resolution logging accuracy
• Automatic resolution adjustment for finer control

Service Compatible gases & liquids
Wetted Materials Without valve: 316L SS,
3V option: 316LSS, Buna-N, silicone, grease, PTFE, brass 360, copper, reinforced acetal copolymer.
HKIT Option: 316LSS, PTFE, Brass, Copper
Accuracy 0.5% FS, 60F - 78F (15.6 to 25.6C);
1.5% FS from 32F - 60F and 78F - 104F (0C - 15.6C and 25.6C - 40C)
Pressure Hysteresis 0.1% FS
Pressure Limits See chart on catalog page
Electronic Temperature Limits 32F - 140F (0 to 60C)
Process Temperature Limits with -HKIT -20F - 180F
Storage Temperature Limits -4F - 176F (-20C - 80C)
Display 0.42 in (10.6 mm) 4 digit LCD
Resolution See chart on catalog page
Power Requirements 9 V alkaline battery, installed non-functional, user replaceable
Process Connections Two (2) 1/8 in (3.18 mm) female NPT;
HKIT Option: Two (2) male 45 Flare 1/4 in
Weight 14.1 oz (400 g)
Agency Approvals CE

• Chiller to coils for freeze protection
• Hydronic valve balancing
• Measure pressure drop across pumps
• Valves to determine valve position

Item
Description
Availability
Price
Protective magnetic rubber boot for manometers (manometer not included)
Normally ships in 1-2 Weeks
$22.00 CAD
Tough gray nylon pouch to protect and series 477AV manometer
Normally ships in 1-2 Weeks
$75.00 CAD