JOHNSON CONTROLS T-5220-1004 PRESSURE TRANSMITTER 5-1/2 in

T52201004 Transmitter
TRANS. RELAY TYPE 40/240

5-1/2 in Capillary B-Bulb

Weight
1.89 lbs

Temperature Monitoring: The T-5220-1004 has a sensor, often placed in ducts, pipes, or tanks, which measures the temperature of the air or fluid inside.

Pneumatic Signal Transmission: Instead of using electrical signals like many modern devices, this transmitter converts the temperature reading into a pneumatic (air pressure) signal. For instance, a higher temperature might correspond to a higher air pressure output.

Communication with Controllers: This pressure signal is then sent to other pneumatic devices, such as controllers, receivers, or indicators. These devices use the signal to adjust other parts of the HVAC system, such as dampers or valves, to regulate the environment’s temperature.

Reliability and Simplicity: Pneumatic systems like the T-5220-1004 were widely used because they were durable, didn’t require electricity (making them safer in certain environments), and were straightforward to maintain.