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    Series 490 Wet/Wet Handheld Digital Manometer

    Wet/Wet Handheld Digital Manometer Liquid & Gas Pressure Measurement, ±0.5% F.S. Accuracy
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    Series 490 Wet/Wet Handheld Digital Manometer

    Liquid & Gas Pressure Measurement, ±0.5% F.S. Accuracy

    SERIES 490 DIGITAL MANOMETERS are versatile, hand-held, 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 memory function allows storage of up to 40 readings for later recall and a backlight provides auxiliary lighting for hard-to-see locations. Standard are a hold feature and both visual and audible overpressure alarms. A new feature added to the Series 490 is a field adjustable damping. This allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications. A 9V alkaline battery is included that provides up to 100 hours of operation.

    This product is in the process of being phased out, for additional ranges, see Series 490A.

    Product Applications

    • Balance hydronic heating or cooling water loops.
    • Check pump or chiller performance.
    • Determine pressure head loss from valves and pipe reduction.
    More Information
    Model Chart
    EXAMPLE 490 0 AT Series 490-0-AT Wet/Wet Handheld Digital Manometer, range 0-15.00 psi, with aluminum tag.
    SERIES 490     Wet/Wet Handheld Digital Manometer
    RANGE   1
    2
    3
    4
    5
    6    		   0-15.00 psi
    0-30.00 psi
    0-50.00 psi
    0-100.0 psi
    0-500.0 psi
    0-200.0 psi
    OPTIONS     AT
    NIST
    ST    		 Aluminum Tag
    NIST Certificate of Calibration
    Stainless Steel Tag
    Service: Compatible gases & liquids.
    Wetted Materials: Without valve: Type 316L SS. Additional wetted parts with 3-way valve option: Buna-N, silicone grease, PTFE, brass 360, copper, reinforced acetal copolymer. 
    Accuracy: ±0.5% Full Scale, 60 to 78°F (15.6 to 25.6°C); ±1.5% Full Scale 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% of Full Scale.
    Pressure Limits: See Ordering page.
    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 Ordering page.
    Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable.
    Weight: 14.1 oz (400 g).
    Process Connections: Two 1/8" (3.18 mm) female NPT.
    Agency Approvals: CE.
    • Measures Virtually any Liquid Media Compatible with 316L Stainless Steel.
    • Instant Selection from up to Seven English/Metric Units.
    • Stores 40 Readings in Memory for Later Reference.
    • Both Audible and Visual Overpressure Alarms.
    • Operates up to 100 Hours on a Single 9 Volt Battery.
    • New Adjustable Dampening Feature for Averaging Fluctuating Readings.