ANSSA-048X018GN

The ANSSA-048X018GN from Johnson Controls is engineered to measure airflow using thermal dispersion technology. This module weighs approximately 12 lbs, making it manageable for installation and maintenance. It incorporates a rectangular duct design with dimensions of 48 x 18 inches, adhering to the standard equal area distribution configuration.

For installation, the unit utilizes a robust insertion mounting method and comes equipped with stainless steel hardware to ensure durability. The design is further enhanced with two cord grips, which are both dust-tight and waterproof, along with a NEMA 4 weather-resistant enclosure to protect against harsh environmental conditions.

At its core, the module houses a pair of thermistor sensors encapsulated in a flexible polyimide membrane. This configuration enables precise measurements with a calibrated velocity range stretching from 0 to 5,000 FPM (or up to 1,524 MPM).

This device guarantees high accuracy levels, with a sensor accuracy of ±2% of the reading and repeatability of ±0.25%. Temperature measurements also show high precision, maintaining an accuracy of ±0.10°F (0.06°C). Users can expect dependable output signals, typically 4 to 20 mA, or an alternative 2 to 10 VDC option when paired with a 500-ohm resistor.

Operating on a power requirement of 24 VAC and drawing 15 VA, the module operates effectively within a temperature range of -29°C to 49°C. Additionally, it can handle humidity levels up to 99% RH without condensation. The use of stainless steel for the bracket material ensures longevity and resistance against corrosion, further solidifying the module’s position as a reliable tool for accurate airflow measurement.