Johnson Controls T-8000-4 Controller

The Johnson Controls T-8000-4 Remote Element Controller is a high-precision proportional action controller engineered for commercial HVAC applications demanding accurate temperature regulation in large air ducts or tanks. This pneumatic temperature controller features a non-compensated capillary system and an 8-foot averaging element, ensuring that the output signal reflects an accurate average temperature across the sensor's length rather than a single point. The dual-sided dial provides versatility for various thermal environments, offering a low range of -10 to 124°F and a high range of 110 to 244°F. Designed for direct acting or reverse acting configurations, the T-8000-4 integrates seamlessly into standard pneumatic control systems. The 4-foot capillary length allows for flexible mounting of the controller body relative to the sensing element. Built with a rugged die-cast aluminum housing, this unit is the industry standard for proportional control in air handling units where stratification is a concern.

• Comprehensive Averaging: The 8-foot element eliminates false readings caused by air stratification in large ducts.
• Wide Operating Range: Two-sided dial supports both low-temp and high-temp applications with a single device.
• Durable Construction: Heavy-duty housing withstands the vibrations and conditions of mechanical rooms.
• Field Adjustable: Proportional band and setpoint are easily calibrated for precise system response.

What is the purpose of the 8-foot averaging element?
In large air streams, temperature is rarely uniform. The 8-foot element senses the temperature across a wider area to provide an average reading, preventing short-cycling of the heating or cooling equipment.

Can this controller be used for both heating and cooling?
Yes, the T-8000-4 is field-reversible, allowing it to function as a direct-acting or reverse-acting controller depending on your specific pneumatic actuator requirements.

How do the dual dials work?
The unit features a flip-over dial; one side is calibrated for the lower temperature range (-10 to 124°F) and the reverse side covers higher temperatures (110 to 244°F), providing application flexibility.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.