Dwyer 477 Series Handheld Digital Manometers

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Dwyer 477 Series Handheld Digital Manometers

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Select from up to nine of the most widely used pressure units without having to waste time and risk mistakes with tedious conversions. Non-volatile memory function enables storage of up to 40 readings. The Series 477 is FM approved intrinsically safe for hazardous locations, Class 1, Div. 1, Group A, B, C, D, T4.

Discontinued!

This product has been discontinued and is no longer available.
This is the direct replacement:

Dwyer 477AV Digital Manometer Series

Model: 477AV series

The 477AV series offers pressure, flow, and velocity measurements. The built-in air velocity and flow calculations provide accuracy and conserve time and errors. Additionally, it features adjustable zero and span values for calibrating in the field, as well as damping to compensate for the fluctuating of readings.

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Dwyer 477 Series Offers

Features

Instant Selection from up to Nine English/Metric Units
Stores 40 Readings in Memory for Later Reference
Measures Positive, Negative or Differential Pressures
Large Easy-to-Read 0.4" LCD Display Includes Switchable Backlight for Great Visibility - Anywhere!
Both Audible and Visual Overpressure Alarms
Includes + and - Indicators plus Low Battery Warning
Operates up to 100 Hours on a Single 9 Volt battery

Functional Specifications

Service: Air and compatible combustible gases
Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. 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
Temperature Limits: 0 to 140°F (-17.8 to 60°C)
Compensated Temperature Limits: 32 to 104°F (0 to 40°C)
Display: 0.42" (10.6 mm) 4-digit LCD
Response Time: 1 second
Connections: Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8" (3.18 mm) I.D. x 1/4" (6.35 mm) O.D. tubing for 477-7-FM & 477-8-FM only

General Specifications

Power Requirements: 9 volt alkaline battery. Battery included but not connected
Weight: 10.2 oz (289 g)

Applications

Field calibration
Monitoring or trouble shooting HVAC/R systems
Clean room checks
Air velocity monitoring with Dwyer Pitot tube
Natural gas appliance line pressure

What's included with the Dwyer 477 Series

Dwyer 477 Series Handheld Digital Manometers

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Customer Reviews for the Dwyer 477 Series

Description ➕➖

Dwyer 477 Series Offers

Features

Instant Selection from up to Nine English/Metric Units
Stores 40 Readings in Memory for Later Reference
Measures Positive, Negative or Differential Pressures
Large Easy-to-Read 0.4" LCD Display Includes Switchable Backlight for Great Visibility - Anywhere!
Both Audible and Visual Overpressure Alarms
Includes + and - Indicators plus Low Battery Warning
Operates up to 100 Hours on a Single 9 Volt battery

Functional Specifications

Service: Air and compatible combustible gases
Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. 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
Temperature Limits: 0 to 140°F (-17.8 to 60°C)
Compensated Temperature Limits: 32 to 104°F (0 to 40°C)
Display: 0.42" (10.6 mm) 4-digit LCD
Response Time: 1 second
Connections: Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8" (3.18 mm) I.D. x 1/4" (6.35 mm) O.D. tubing for 477-7-FM & 477-8-FM only

General Specifications