Schneider Electric TK-1101 Pneumatic Room Thermostat 55-85°F

The Schneider Electric (Barber Colman) TK-1101 is a single setpoint proportional pneumatic room thermostat designed for two-pipe heating and cooling systems. This reverse-acting controller features a bi-metal sensing element that provides accurate temperature control with a setpoint range of 55 to 85°F.

Key Features:

• Pneumatic operation with branch line to sensing-element feedback for linear, stable control
• Single setpoint proportional control for precise temperature regulation
• Reverse acting configuration for two-pipe systems
• Bi-metal sensing element for reliable temperature measurement
• Maximum air pressure rating of 30 PSIG
• Operating temperature range of 40 to 150°F
• Exposed setpoint adjustment and thermometer for easy monitoring

Construction:

• Beige plastic cover with blank faceplate
• Compact dimensions: 2-3/4" W x 1-5/8" D x 4-3/8" H
• Designed for upright wall mounting

The TK-1101 provides proportional pneumatic control that modulates system output based on temperature deviation from setpoint, ensuring energy-efficient operation and maintaining consistent comfort levels. The branch line feedback design delivers linear response characteristics and stable performance across the full operating range.