Handheld Digital Manometers The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.

476A - Information Low Cost Single Pressure Manometer Instant selection from up to eight English/Metric units Features electronic zeroing Extruded Aluminum Case Operates on a 9V Battery for 100Hrs

476A - Specifications Display: 4 digit LCD Temperature Limits: to 60°C Pressure Accuracy: ±1.5% FS Pressure Limit: 0.34 Bar Designed especially for the HVAC contractor, the Model 476A-0 can be used to set gas supply pressures, verify pressure switch operation, adjust regulators, check pneumatic systems and computer peripherals.

478A - Information Low cost differential pressure manometer Instant selection from up to nine English/Metric units Stores minimum and maximum readings since last power cycle

478A - Specifications Display: 4 digit LCD Temperature Limits: to 60°C Pressure Limits: 0.34 Bar Pressure Accuracy: ±1.5% FS Operates on a 9V Battery for 100Hrs Housing Material: Extruded Aluminum

478A - Specifications The Series 478A 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.

478A - Specifications Display: 4 digit LCD Temperature Limits: to 60°C Pressure Limits: 0.34 Bar Pressure Accuracy: ±1.5% FS Operates on a 9V Battery for 100Hrs Housing Material: Extruded Aluminum

X-FM- Information Intrinsically Safe Differential Pressure Manometer ( Factory Mutual approved) Ranges down to 0 to KPa Selection of KPa or in w.c. for engineering units Features electronic zero Metal barbed fittings

Specifications Display: 4 Digit LCD Temperature Limits: to 60°C Pressure Limits: 0.74 Bar to Bar (range dependent) Pressure Accuracy: 0.5% FS Operates on a 9V Battery for 100Hrs Housing Material: Extruded Aluminum Weight: 306 g

477AV - Information Full - featured differential pressure manometer with integral air velocity/air flow calculations Ranges as low as 0 to 249 Pa Instant selection of up to 9 English / Metric units Stores up to 40 readings in internal memory Features Backlighting and electronic zeroing

477AV - Specifications Display: 4 digit LCD Temperature Limits: 0 to 60°C Pressure Accuracy: ±0.5% Full Scale Operates on a 9V Battery for 100Hrs Internal Memory: up to 40 readings Weight: 289 g

477AV – Purpose Packed with features needed to make pressure measurements and recording faster, easier and more accurate than ever. The memory function enables storage of up to 40 readings - perfect for HVAC technicians making Pitot tube traverses of air flow readings across a duct. The 477A is also ideal for maintenance personnel or technicians that require a highly accurate standard to check their instrumentation or equipment to ensure proper performance

477B - Information Contains a highly accurate differential pressure sensor Accuracy: 0.1% Full Scale Instant selection from up to nine English/Metric units Features a backlight and electronic zeroing

477B - Specifications Display: 0.42 inch 4 digit LCD Temperature Limits: 0 to 40°C Pressure Accuracy: ±0.1% FS Operates on a 9V Battery for 100Hrs Stores up to 40 readings Weight: 289 g

490A - Information Wet / wet differential pressure transmitter with 316L Stainless Steel wetted parts Ranges up to 35.5 Bar (max pressure up to Bar) Instant selection from up to eight English/Metric units Visual and audible overpressure alerts

490A - Specifications Display: 4 digit LCD Temperature Limits: 0 to 60°C Pressure Accuracy ±0.5% Full Scale Operates on a 9V Battery for 100Hrs Internal Memory: Stores up to 40 readings New feature: 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.

Magnehelic – New Accessories Two new Magnehelic options -AHU1- Flush mounted bracket installed on Magnehelic -AHU2- Flush mounted bracket installed on Magnehelic with A-481 Installer Kit