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Dwyer - Model 478A -Digital Differential Manometer
FromMeterMall USA
The Series 478A Dwyer Manometer can be used to measure positive, negative, or differential pressures. The unit features selectable units, auto zero, hold and a Min/Max function. Press the Hold key to freeze the current pressure measurement on the display. The 478A manometer includes a zeroing button to null out any minor pressure differences.
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Measure Positive and Negative Pressures.
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One-Button Auto-Zero Function.
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Auto Power Off.
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Large, Easy-to-Read Display.
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Extruded Aluminum Case.
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Instant Selection from up to Eight English/Metric Units.
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Service: Air and compatible gases.
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Wetted Materials: Consult factory.
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Accuracy: ±1.5% F.S. @ 72°F (22.2°C). Includes linearity and repeatability.
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Pressure Hysteresis: ±0.1% of F.S.
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Pressure Limits: 5 psig (.34 bar).
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Temperature Limits: 0 to 140°F (-17.8 to 60°C).
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Compensated Temperature Limits: 32 to 104°F (0 to 40°C).
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Thermal Effect: 0.05% F.S./°F.
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Display: 4 digit LCD (.425"H x .234"W digits).
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Power Requirements: 9V alkaline battery. Battery included but not connected.
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Process Connections: Barbed connection for use with 3/16" or 1/4" I.D. tubing.
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Weight: 10.8 oz (306 g).
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Agency Approvals: CE.
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Warranty 1 year