Test Chamber Temperature Control

Case Study 003

An Automated NSW Smart Solutions Guide

Publish Date: 07/09/2026

The Customer

An electronics testing lab owner at a major multinational technology company.

The Problem

The laboratory contains several fully enclosed, freestanding Faraday rooms conditioned by VRF fan coils. The original construction team did not place thermostats inside the chambers. As a result, chamber temperature was uncontrolled and varied widely based on conditions at the thermostat location. The thermostats could not be relocated due to the extremely high cost of adding a penetration to the Faraday chamber.

The Solution

Automated NSW installed Infrasensing temperature sensors connected via PoE to the existing network infrastructure inside each Faraday room. The sensors are small enough to fit in the palm of your hand and designed to be repositioned easily by laboratory occupants.

Using a Honeywell Optimizer Advanced Controller, we read the chamber temperature sensors across the network and modify the operating modes of each chamber’s VRF controller through a Daikin DBACS gateway.

The Infrasensing Temperature Stations are smaller than 4” x 4”

The Results

Average chamber temperature stabilized within one degree of setpoint immediately after commissioning. Previously, temperatures fluctuated 6 to 10 degrees below setpoint under normal conditions and 10 to 15 degrees above setpoint during load tests. That accuracy has been sustained across a range of operating conditions. Active cooling time dropped substantially, reducing the chamber’s energy consumption in the process.