The Johnson Controls T-5800-3 is a high-performance dual input pneumatic receiver controller engineered for precise proportional control in complex HVACR systems. As a veteran-grade pneumatic receiver-controller, this unit interfaces with remote pneumatic transmitters for temperature, humidity, or pressure, converting 3 to 15 psig signals into stable output for industrial pneumatic actuators. This model features a master input "M" connection, allowing for automatic set point readjustment based on external variables, making it an essential component for HVAC pneumatic control systems requiring sophisticated logic. The T-5800-3 is field-selectable for direct or reverse acting operation and offers an adjustable gain ranging from 0.5:1 to 15:1, factory-calibrated at a standard 10:1 ratio. Built with a rugged Noryl body and integrated output pressure gauge, it facilitates rapid pneumatic system troubleshooting via hypodermic needle test points. Its surface-mount design and snap-on air connections ensure a streamlined installation for any commercial HVAC contractor managing legacy or modern pneumatic infrastructure. Key Benefits Dual Input Versatility: Supports a master input for scheduling set point readjustment, ideal for compensated control loops. Field-Adjustable Logic: Easily switch between direct and reverse action to match specific system requirements on-site. High-Precision Gain: Wide adjustment range (0.5:1 to 15:1) allows for fine-tuning system sensitivity and stability. Simplified Maintenance: Features a see-through protective cover and built-in gauge for immediate visual diagnostics. Reduced Piping: Capable of providing restricted supply air to low-volume transmitters, reducing installation materials. Common Questions How do I change the action on a Johnson Controls T-5800-3? The controller action and readjustment are field-selectable by interchanging the placement of the internal tube ends from one lower spigot to another, as detailed in the technical bulletin. What is the standard air supply requirement for this controller? This Johnson Controls pneumatic controller operates on a nominal 20 psig supply (18 to 22 psig range). The air must be clean, dry, and oil-free to prevent clogging the internal orifices. What is the difference between the T-5800-3 and the T-5800-4? The T-5800-3 is a proportional-only controller, whereas the T-5800-4 includes proportional plus integral (PI) control logic to eliminate set point offset in balanced systems. This item is not eligible for free shipping. 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.
