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)