ADPS-05-2-N-C – Effective Pressure Monitoring Solution for Duct Systems

1. Introduction to the ADPS-05-2-N-C Differential Pressure Switch
The ADPS-05-2-N-C is a model from the ADPS series of differential pressure switches by Dwyer Instruments (USA) – a leading brand in HVAC and BMS measurement technology.
It is designed to monitor differential pressure in air ducts, enabling efficient ventilation operation and early detection of issues such as clogged filters, abnormal pressures, or unbalanced airflow.

2. Technical Specifications of ADPS-05-2-N-C
(Let me know if you’d like this section as a complete English table)

3. Typical Applications of ADPS-05-2-N-C
With a pressure range from 100–1250 Pa, the ADPS-05-2-N-C is suitable for a wide range of air handling and automation applications.

Monitoring Duct Pressure in HVAC Systems
• Measures static and airflow pressure in supply and return ducts
• Provides early warning of blockages, leaks, or pressure imbalance

Air Filter Monitoring in AHUs and FCUs
• Detects dirty or clogged filters (e.g., pre-filters, HEPA) to trigger alerts or maintenance
• Helps optimize system performance and reduce energy consumption

Cleanrooms and Smart Buildings
• Maintains positive or negative pressure between controlled areas
• Integrates with BMS to automatically control fans, dampers, or alarms

Control Panel and PLC Integration
• Easily connects to control systems for monitoring and automation

4. Key Features of ADPS-05-2-N-C

Quick Setup and Easy Adjustment
• Built-in adjustment knob on the switch body – no cover removal required
• Pressure range suited to most residential and commercial HVAC duct systems

Flexible SPDT Contact Output
• Simple wiring for fans, chillers, alarms, or other control equipment
• Compatible with both AC and DC systems

Durable, Low-Maintenance Design
• Flame-retardant plastic housing withstands impact and high temperatures
• No external power required, simple electromechanical design ensures reliability

Optimized for HVAC Engineers
• Widely used by MEP engineers due to easy installation, long life, good compatibility, and competitive cost

5. Installation Guide for ADPS-05-2-N-C in Duct Systems

Preparation
• Select a location near the duct, at the inlet/outlet of filters or fans
• Shut down the system before installation to ensure safety

Mechanical Mounting
• Mount the switch on a wall or support frame
• Use Ø6 mm air tubing to connect the High and Low ports
• Avoid locations with strong vibrations or water splashes

Electrical Connection
• Connect signal wires to the SPDT terminals (C – NO – NC) based on your control logic
• Can be connected to relays, indicator lights, buzzers, PLCs, BMS, etc.

Testing and Operation
• Turn on the system, apply test pressure, and check for switching response
• Adjust the setpoint knob to match the required operating pressure

6. DLK – Official Distributor of Dwyer Pressure Switches in Vietnam
DLK TRADING AND SERVICE CO., LTD is an official distributor of high-quality measurement devices and pressure switches from global brands like Dwyer, Honeywell, Kometer...
DLK’s commitments include:

• Genuine products with full CO – CQ certificates
• On-site technical consultation and proper model selection
• Ready stock and fast nationwide delivery
• Transparent warranty and professional after-sales support

Looking for a precise pressure switch for air ducts or filters in AHU/FCU systems?
ADPS-05-2-N-C is the ideal choice – compact, accurate, and easy to install.