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Dwyer Series 490 Wet/Wet Handheld Digital Manometer, 0-15.00 psi Range


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$295.15
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$292.20
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The Dwyer Series 490 wet/wet digital manometer provides positive and differential pressure measurements, and is used to balance hydronic heating or cooling loops, evaluate pump or chiller performance, and determine pressure head loss from valves and pipe reduction. The wetted parts are composed of 316L stainless steel (SS) for use with compatible gases and liquids. It has an accuracy of + or - 0.5% of full scale at 60 to 78 degrees F, and + or - 1.5% full scale at 32 to 60 and 78 to 104 degrees F. The extruded aluminum case provides durability. The backlit four-digit LCD displays the pressure measurement. User-selectable measurement units include inH2O, ftH2O, bar, mbar, psi, inHg, mmHg, and kPa. Field-adjustable damping provides display averaging as it corresponds to fluctuation level. The unit can store up to 40 readings for later recall, and audible and visual alarms indicate out-of-range measurements. The zero function nulls minor pressure differences before measuring, and display hold retains last reading when the display cannot be seen during testing. The meter is powered by a 9V battery (included) and automatically shuts off after 20 minutes to preserve battery life.

Specifications
Pressure typesPositive and differential
Wetted partsType 316L SS
Media typeLiquid and gas
Case materialExtruded aluminum
Pressure unitsinH2O, ftH2O, bar, mbar, psi, inHg, mmHg, kPa
DisplayFour-digit LCD
Compensated temperature limits32 to 104 degrees F/0 to 40 degrees C
Dimensions6-17/32 x 2-13/16 x 29/32 (H x W x D)
Power9V alkaline battery
Agency approvalsCE

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Manometers measure the pressure of a liquid or gas. They are used in laboratory, medical equipment, engineering, automotive, and heating, ventilation, and air-conditioning applications. Manometers measure any combination of gauge, absolute, or differential pressures. Gauge pressure is the amount of pressure in a system relative to the ambient pressure, absolute pressure is the amount of pressure in a system relative to an absolute vacuum, and differential pressure is the difference between two pressures. Analog manometers are composed of columns of liquid, and they use gravity and the liquid's density to calculate pressure. Because they have no moving parts, analog manometers do not require re-calibration. Digital manometers have pressure sensors that are connected to a system with a hose to provide a digital readout of the amount of pressure present in a system. They use microprocessors to calculate pressure, and they require periodic calibration to help ensure accuracy.

Dwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN.

  • Wet/wet digital manometer for balancing hydronic heating or cooling loops, evaluating pump or chiller performance, and determining pressure head loss from valves and pipe reduction

  • Type 316L stainless steel wetted parts for use with compatible gases and liquids

  • Accuracy is + or - 0.5% of full scale at 60 to 78 degrees F, and + or - 1.5% full scale at 32 to 60 and 78 to 104 degrees F

  • Pressure measurement units include inH2O, mmH2O, bar, mbar, psi, inHg, mmHg, Pa, kPa

  • Stores of up to 40 readings, and audible and visual alarms indicate out-of-range measurements

Product Information   Specifications for Dwyer Series 490 Wet/Wet Handheld Digital Manometer, 0-15.00 psi Range Below:

Manufacturer Dwyer Instruments
Brand Dwyer
Model 490-1
UPC 094704450377
Item Weight 0.95 pounds
Package Weight 0.95 pounds
Package Size 4.6 x 1.1 x 1.1 inches
Units in Package 1

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