Johnson Controls P499RAP-102 Pressure Transducer

The Johnson Controls P499RAP-102 Pressure Transducer is a rugged, direct-mount solution designed for high-precision monitoring in commercial HVACR systems. Engineering with a 17-4PH stainless steel single-piece machined pressure port, this unit eliminates typical failure points like O-rings or welds, ensuring a leak-proof seal even when exposed to corrosive media, including ammonia and various refrigerants. The P499RAP-102 serves as the primary P399GAA-1 replacement, providing a seamless field update for legacy Penn/Johnson Controls installations. It delivers a 0.5-4.5 Vdc ratiometric output across a 0-200 PSI pressure range, maintaining a total error band of 1% for exceptional reliability in fan speed control, chiller staging, and compressor protection.

Built to withstand harsh mechanical environments, the sensor is rated for IP67 protection and resists high-frequency vibration and physical shock. Its slender profile allows for straightforward installation using standard deep-socket wrenches, making it ideal for tight mechanical rooms or crowded cabinet configurations. For contractors managing refrigeration pressure monitoring, this transducer ensures digitally compensated accuracy across wide ambient temperature swings, from suction line freeze/thaw cycles to high-heat discharge applications. When upgrading from older P399 series pressure sensors, the P499RAP-102 offers superior longevity and stability for modern building automation and industrial process controls.

• Direct Replacement: Verified P499RAP-102 cross reference for the discontinued P399GAA-1 model.
• Durable Construction: Features a stainless steel pressure transducer body with no internal organic seals to prevent refrigerant loss.
• High Precision: 1% total error band performance ensures accurate HVAC pressure sensor feedback for critical system loops.
• Media Versatility: Compatible with all 17-4PH-safe fluids, including water, glycol, and CO2.
• Robust Connection: Utilizes a standard 1/8" NPT (Style 49) thread and a specialized Packard connector for secure electrical termination.

Is the wire harness included with this model?
The P499RAP-102 is typically sold as an individual unit. For new installations, a WHA-PKD3 series wire harness must be ordered separately to interface with the Packard connector.

Can this transducer be used on the high side of a system?
Yes, provided the expected pressures do not exceed the 0-200 PSI operating range. For high-pressure discharge lines, ensure your system peak does not exceed the 2x overpressure rating of the sensor.

What is the difference between the 'C' and 'K' suffixes?
Models ending in 'C' are individual transducers, while those ending in 'K' are kitted with a 2-meter wire harness and technical documentation.

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.