This differential pressure transmitter is specially designed for HVAC and fresh air systems, providing accurate and stable air pressure measurement for ducts, filters and ventilation equipment to ensure efficient airflow monitoring and system control. As a reliable HVAC pressure sensor, it supports low pressure differential measurement and is widely used in building automation and ventilation applications.
RTD (Resistance Temperature Detector) is a sensor whose resistance changes as its temperature changes. The resistance increases as the temperature of the sensor increases. The resistance vs temperature relationship is well known and is repeatable over time. An RTD is a passive device. It does not produce an output on its own. External electronic devices are used to measure the resistance of the sensor by passing a small electrical current through the sensor to generate a voltage. Typically 1 mA or less measuring current, 5 mA maximum without the risk of self-heating.