This document presents application examples and technical specifications for WIKA Air2guide differential pressure gauges used in HVAC systems.
This document introduces the WIKA Air2guide series of measurement instruments and controllers designed for the ventilation and air conditioning industry. It highlights the importance of precise measurement and control for maintaining indoor air quality and energy efficiency in HVAC systems. The text explains how monitoring differential pressure across air filters helps reduce lifecycle costs and ensures compliance with regulations like the EU ErP directive.
The document provides specific application examples for various components within an air handling unit, such as filters, fans, and heat exchangers. It details the features of specific differential pressure gauge models, including the A2G-05, A2G-10, and A2G-15, covering their installation methods, pressure ranges, and electrical output signals. This manual is written in Chinese.
| Pressure Range | 0 … 50 Pa to 0 … 12,500 Pa, -25 … +25 Pa to -1,500 … +1,500 Pa |
|---|---|
| Maximum Working Pressure | 20 kPa |
| Protection Class | IP54 (optional IP65) |
| Insertion Depth | 42 mm |
| Electrical Output Signal | 0 … 10 V (3-wire) |
A differential pressure measuring instrument is required for every air filter stage with an air flow greater than 1,000 m³/h.
A CO2 concentration of below 800 ppm is considered very good air quality.