Dwyer Series 636D Fixed Range Differential Pressure Transmitter (636D-0, 636D-1)

Product Introduction

The Dwyer Series 636D Fixed Range Differential Pressure Transmitter is a rugged, high-accuracy instrument designed for measuring pressures of liquids, gases, and vapors in demanding industrial environments. With a 0.5% full-scale (FS) accuracy and standard 4–20 mA output (optional 1–5 VDC), it ensures precise data transmission for process control. Housed in a NEMA 4X-rated 316 stainless steel welded enclosure, the transmitter withstands harsh conditions, while all 316L wetted materials ensure compatibility with most media. CSA-approved for explosion-proof use in hazardous locations and compliant with NACE standards for offshore applications, the 636D combines reliability with safety for critical industrial measurements

Product Features

Precision Measurement:

0.5% FS accuracy for reliable differential pressure monitoring across liquid, gas, and vapor media.

Fixed range configurations (636D-0, 636D-1) tailored to specific application needs.

Durable Construction:

NEMA 4X-rated 316 stainless steel enclosure resists corrosion, dust, and water ingress.

Welded construction ensures integrity in harsh environments (e.g., offshore, chemical plants).

Wetted Materials:

316L stainless steel components compatible with most industrial fluids and gases.

Reduces risk of material degradation or contamination in process systems.

Safety & Compliance:

CSA-approved explosion-proof for Class I, Division 1 hazardous areas (Groups B, C, D).

NACE compliance for offshore and corrosive environment applications.

Output Versatility:

Standard 4–20 mA signal for long-distance transmission; optional 1–5 VDC for local systems.

Loop-powered design simplifies integration with PLCs, SCADA, and control panels.

Environmental Resilience:

Operates in extreme temperatures and harsh conditions with minimal maintenance.

Suitable for outdoor installations or dusty/particulate-laden environments.

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.