Dwyer DHII Series Differential Pressure Transmitter with Modbus

Dwyer DHII Series (DHII-006/DHII-007/DHII-008/DHII-009) Differential Pressure Transmitter

Product Introduction

The Dwyer DHII Series Digihelic Differential Pressure Controllers are advanced instruments that integrate precise pressure measurement, control, and communication capabilities in a rugged NEMA 4 (IP66) enclosure. Available with aluminum or stainless steel electronics housings, they combine 2 SPDT control relays, a 4-20 mA process output, and Modbus® communications, making them ideal for both indoor and outdoor applications—from rooftop air handlers to clean rooms. The large backlit LCD display ensures visibility from a distance, while detachable terminal blocks simplify installation and wiring.

Features

Robust Enclosure: NEMA 4 (IP66) rating protects against water, dust, and cleaning solutions, enabling outdoor use (e.g., rooftop air handlers) and installation in clean rooms or facilities requiring frequent washing.

Comprehensive Control & Output: Equipped with 2 SPDT control relays for pressure control, a 4-20 mA process output for continuous monitoring, and Modbus® communications for integration into building management systems.

User-Friendly Design: Large, brightly backlit 4-digit LCD display offers clear visibility from long distances; detachable terminal blocks allow pre-wiring outside the housing, reducing installation time and complexity.

Versatile Applications: Suitable for differential pressure measurement and control in HVAC systems (air handlers, filters), clean rooms, and industrial environments where durability and reliability are critical.

Specifications (General for DHII Series):

Brand: Dwyer

Model Numbers: DHII-006, DHII-007, DHII-008, DHII-009

Housing Material: Aluminum or stainless steel electronics housing

Enclosure Rating: NEMA 4 (IP66)

Display: 4-digit LCD with backlight

Outputs: 2 SPDT control relays, 4-20 mA process output

Communication: Modbus®

Wiring: Detachable terminal blocks

Warranty: 1 year

Customization: Supports OEM and ODM services

Model-Specific Ranges (Example):

DHII-006: Likely covers lower ranges (e.g., 0-35 kPa, as referenced in product displays)

DHII-007/DHII-008/DHII-009: Higher ranges to accommodate diverse industrial needs (specific ranges to be confirmed by catalog)

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.