Dwyer ADPS-05-2-N-C vs ADPS-08-2-N-C Differential Pressure Sensors

Dwyer ADPS-05-2-N-C vs ADPS-08-2-N-C Differential Pressure Sensors – Key Differences Explained

Posted on: 08/07/2025

In HVAC, AHU, or cleanroom systems, monitoring differential pressure across filters or ductwork is essential for reliable operation and energy efficiency.

The Dwyer ADPS Series features electro-mechanical differential pressure sensors with built-in switches—designed specifically for air handling and ventilation systems.

Two of the most widely used models in this series are the ADPS-05-2-N-C and ADPS-08-2-N-C, both officially distributed in Vietnam by DLK. So, what are the key differences between them? Let’s break it down:

1. Overview of Dwyer ADPS Differential Pressure Switch Series

The Dwyer ADPS is a differential pressure sensor with an integrated switch, commonly used to:

Monitor pressure before and after air filters in AHUs
Detect airflow blockage
Supervise duct and fan pressure

These sensors feature adjustable setpoints, a robust housing, and simple installation—ideal for long-term reliability in HVAC environments.

2. Comparison Table: ADPS-05-2-N-C vs ADPS-08-2-N-C

Model	ADPS-05-2-N-C	ADPS-08-2-N-C
Pressure Range	0.08 – 0.5 in w.c. (20 – 125 Pa)	0.2 – 0.8 in w.c. (50 – 200 Pa)
Switch Type	SPDT mechanical switch	SPDT mechanical switch
Adjustment	Manual screw adjustment	Manual screw adjustment
Use Case	Ultra-low pressure monitoring	Standard HVAC differential pressure monitoring

3. When to Choose ADPS-05-2-N-C

This model is ideal for low-pressure applications such as:

Monitoring minimal pressure differences in cleanrooms
HEPA filter blockage detection in AHU systems
Applications requiring high sensitivity to small pressure changes (starts at 0.5 in w.c.)
Low-pressure ventilation or positive pressure control environments

4. When to Choose ADPS-08-2-N-C

This model suits medium pressure monitoring, ideal for:

Standard HVAC systems with high-capacity fans
Main air ducts in office buildings, hospitals, or factories
Monitoring central air filters or duct pressure
Applications where pressure may fluctuate within a wider range

5. Choosing the Right ADPS Model for Your System

To ensure proper selection:

Specific Application	Suggested Model
Low-pressure air purifier with HEPA filter	ADPS-05-2-N-C
Large AHU fan pressure monitoring	ADPS-08-2-N-C
Average pressure system for ventilation	ADPS-08-2-N-C
Small differential pressure detection system	ADPS-05-2-N-C

6. Purchase Genuine Dwyer ADPS Sensors from DLK

DLK – Long Khanh Electrical Engineering Trading Co., Ltd. is the official distributor of Dwyer Instruments in Vietnam. We supply a full range of ADPS models with clear CO/CQ certificates and dedicated technical support.

Why choose DLK: