ADPS-05-2-N-C – An Essential Device for Every AHU System

In an AHU (Air Handling Unit) system, monitoring differential pressure across compartments, air filters, or ductwork is crucial for ensuring operational efficiency and indoor air quality.

The ADPS-05-2-N-C from Dwyer Instruments (USA) is one of the most popular mechanical differential pressure switches. Compact, precise, and durable, it has become a top choice among HVAC engineers.

1. Product Overview

ADPS-05-2-N-C belongs to the Adjustable Differential Pressure Switch line. It operates based on a mechanical principle using a diaphragm and adjustable spring, allowing it to detect pressure differences between two points. When the pressure differential exceeds or falls below the set threshold, the switch activates to control equipment or trigger an alert.

Key Features:

• Compact design, easy to install directly on walls or panels

• Adjustable setpoint range accessible directly on the sensor body

• Reliable performance in environments with light dust or low humidity

2. Key Technical Specifications

• Differential Pressure Range: 20–500 Pa (adjustable)

• Operating Temperature: -20 to 85°C

• Maximum Pressure: 10 kPa

• Output Contact: SPDT (5A/250VAC)

• Housing Material: Durable, flame-retardant ABS plastic

• Protection Rating: IP54

With its flexible pressure range, the ADPS-05-2-N-C is suitable for small, medium, and large AHU systems.

3. Benefits of ADPS-05-2-N-C in AHU Systems

• Efficient Filter Monitoring: Detects clogged filters to enable timely cleaning or replacement

• Fan and Motor Protection: Prevents operation under unsafe pressure conditions

• Energy Efficiency: Helps optimize airflow management

• Long Lifespan: Simple mechanical design minimizes malfunction risks

• Easy Integration: Direct connection with controllers or BMS system

4. Real-World Applications

The ADPS-05-2-N-C is commonly used for:

• Monitoring differential pressure across air filters in AHUs

• Measuring pressure in clean rooms, laboratories, or cold storage areas

• Controlling supply and return fan pressure

• Triggering alerts when duct pressure exceeds safety limit

5. DLK – Authorized Distributor in Vietnam

Purchasing the ADPS-05-2-N-C from DLK ensures:

• Genuine Dwyer products with full CO/CQ documentation

• Free technical consultation by HVAC & BMS experts

• On-site installation support and user guidance

• Official warranty, fast replacement for manufacturer defects

Thanks to its precise monitoring capability, durable construction, and easy integration, the ADPS-05-2-N-C is an indispensable component in any professional AHU system.