The 2252 Series pneumatic temperature transmitters are designed to measure air or fluid temperatures in pneumatic control systems and transmit a fixed span, 3 to 15 psig (20 to 103 kPa) signal to controlling and indicating devices such as receiver controllers, receiver gauges, sensitive pressure switches, or snap-acting 2353-501 diverting relays. These transmitters are available with several types of sensing elements.  

These transmitters are “one-pipe” devices requiring an externally restricted source of constant pressure control air. Their design features pneumatic feedback to ensure accuracy and stability over their temperature span.

Features:

• Permits remote readout and/or control of temperatures associated with HVAC systems.
• Eight different ranges permit proper match of transmitter range to applications.
• Quality design and construction, with beryllium copper feedback bellows, provides excellent linearity, response and stability.
• Field-accessible “zero” adjustment.
• Liquid-filled sensing elements in the following styles:
- 20 ft. (6.1 m) averaging, for air ducts.
- Rigid, for immersion (in well), or air duct insertion.
- 10 in. (25.4 cm) rigid coiled, for fast response in air ducts where averaging is not required.
- Remote-bulb, for various applications.