STD190/ STD290/ STD591 Duct Mount Averaging Temperature Sensors - Installation Instructions

The STD190 and STD290 sensors are delivered as complete units that consist of a housing and a cable with four sensors located at 0.5 m (1.6 ft.) intervals. The distance from the first sensor to the housing is 2.5 m (8.2 ft.). This mean-value temperature sensor contains four thermistors. It is is used for temperature measurement in air ducts and is mounted onto a grid or on wires suspended across a duct. The STD591 sensor is delivered as a complete unit, consisting of a junction box and four sensors on a cable at 1 meter (3.3 ft.) intervals. The distance from the first sensor to the junction box is 2 m (6.6 ft.). This mean-value temperature sensor contains four thermistors. It is used for temperature measurement in air ducts and is mounted onto a grid or on wires suspended across a duct.