--- product_id: 38473358 title: "477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes" brand: "dwyer" price: "452704CFA" currency: XOF in_stock: true url: https://www.desertcart.sn/products/38473358-477av-handheld-digital-manometer-477av-6-0-30-psi-air store_origin: SN region: Senegal --- # 0-30 psi range 9V replaceable battery 0 to 140°F 477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes **Brand:** dwyer **Price:** 452704CFA **Availability:** ✅ In Stock ## Summary > 🔧 Measure with Confidence! ## Quick Answers - **What is this?** 477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes by dwyer - **How much does it cost?** 452704CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/38473358-477av-handheld-digital-manometer-477av-6-0-30-psi-air) ## Best For - dwyer enthusiasts ## Why This Product - Trusted dwyer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable and Reliable:** Built to withstand storage temperatures from -4 to 176°F. - • **User-Friendly Display:** Clear 4-digit LCD for easy reading, even in low light. - • **Convenient Power Solution:** Comes with a user-replaceable 9V alkaline battery for hassle-free operation. - • **Precision at Your Fingertips:** Experience accurate pressure readings with a 0-30 psi range. - • **Versatile Temperature Tolerance:** Operates efficiently in temperatures from 0 to 140°F. ## Overview The Dwyer® 477AV Handheld Digital Manometer is a versatile tool designed for professionals, offering precise pressure measurements up to 30 psi and a wide temperature range. Its user-friendly 4-digit LCD display ensures clarity, while the durable design allows for reliable performance in various conditions. Plus, the replaceable 9V battery means you're always ready to measure. ## Description The new, upgraded SERIES 477AV HANDHELD DIGITAL MANOMETER is now available with pressure, flow, and velocity measurements along with a number of other convenient features. The 477AV uses a highly accurate differential pressure sensor to offer ±0.5% full scale accuracy. It displays negative, positive, and differential pressure. For pressure, flow, and velocity there are selectable English and metric units, as seen in the specifications. The built-in air velocity and flow calculations provide accuracy and conserve time associated with cumbersome manual calculations. Additionally, up to 40 readings can be saved perfect for HVAC technicians making Pitot tube traverses of airflow readings across a duct. The accuracy that the 477AV series provides is critical to maintenance personnel and technicians who require a highly accurate standard to check their instrumentation or equipment, to ensure proper performance. The digital display offers a backlight feature for easier viewing in darker areas. Meanwhile, battery conservation is monitored and displayed in the event of low battery voltage. The digital manometer will automatically shut off after 20 minutes to prevent battery drain. This shut-off time can be reduced or disabled if desired. Series 477AV can be field-calibrated by setting zero and span values. Furthermore, the damping feature compensates for the fluctuating readings by averaging input values to display a more stable readout. Included is an audible and visual alarm to warn over flow, over pressure or over velocity. The Series 477AV features a menu structure outline printed on the back of the aluminum casing. Comprehensive written instructions, a wrist strap, and a 9 Volt alkaline battery are also included. (Standard model shown in picture). ## Features - MANUFACTURER DIRECT - Pressure Limits: 60 psig. Temperature Limits: 0 to 140°F (-17.8 to 60°C). - Compensated Temp Limits: 32 to 104°F (0 to 40°C); Storage Temp Limits: -4 to 176°F (-20 to 80°C). - Display: 0.42" (10.6 mm) 4 digit LCD. - Power Requirements: 9 V Alkaline battery, installed non-functional, user replaceable. ## Images ![477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes - Image 1](https://m.media-amazon.com/images/I/61Q6cgjXC7L.jpg) ![477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes - Image 2](https://m.media-amazon.com/images/I/61QQqxsOF6L.jpg) ![477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes - Image 3](https://m.media-amazon.com/images/I/51kxUQTMMUL.jpg) ![477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes - Image 4](https://m.media-amazon.com/images/I/61mggAkXQvL.jpg) ## Frequently Bought Together - Dwyer® 477AV Handheld Digital Manometer, 477AV-6, 0-30 psi, Air Velocity/Flow Modes - PneumaticPlus PPR Series Compressed Air Pressure Regulator - Embedded Gauge & Bracket Included (1/2" NPT) - Dwyer® Digital Pressure Gage, DPGW-08, 1% Accuracy, Compatible Liquids & Gases, 0-100 psi --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/38473358-477av-handheld-digital-manometer-477av-6-0-30-psi-air](https://www.desertcart.sn/products/38473358-477av-handheld-digital-manometer-477av-6-0-30-psi-air) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-02*