The 2212-41x Series Pneumatic Room Thermostats
are designed for proportional control of pneumatic
devices and actuators in environmental control
systems. These two-pipe thermostats incorporate a
highly sensitive bimetal thermostatic element and a
pilot operated relay with pneumatic feedback for
accuracy and stability over the entire operating range.
These thermostats have a serrated thumb wheel for
setpoint adjustment. Models are also available with
preassembled internal dial stops. Thermostat covers
are available in various styles to meet particular
requirements. Cover options include models with a
setpoint scale and a thermometer, a setpoint scale
only, a thermometer only, or blank. An external setpoint
adjustment cover is available on some models, or can
be field-installed on covers where desired.
Features- Factory-calibrated, stainless steel ball-in-seat
provides pneumatic feedback for stable, linear
operation.
- Easy-to-use throttling range adjustment and
recalibration.
- Adjustable (patented) bimetal shows actual
throttling range in both °F and °C. Adjustable 2 to
12 °F (1 to 6.7 °C).
- Leak-proof, self-closing branch gauge tap.