Dwyer Series 477B Handheld Digital Manometer

Product Introduction

The Dwyer Series 477B Handheld Digital Manometer sets a new standard for portable pressure measurement, offering ±0.1% full-scale accuracy across a range of pressure spans. Battery-powered and designed for field use, this manometer measures positive, negative, or differential pressures in air and compatible gases, making it ideal for HVAC commissioning, industrial maintenance, and precision testing.

Product Features

Exceptional Accuracy:

±0.1% FS at 15.6–25.6°C (60–78°F), ensuring reliable readings in critical applications.

Versatile Measurement Modes:

Positive, negative, and differential pressure measurement with seven selectable units (in. w.c., psi, kPa, mbar, etc.).

Data Management:

Memory storage for 40 readings, hold function, and backlit LCD for low-light environments.

Safety Features:

Visual and audible overpressure alarms to prevent damage during high-pressure scenarios.

Technical Specifications

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.