A 225 psi gauge pressure transducer designed for head pressure control in refrigeration systems, featuring a welded stainless steel diaphragm and a 0-10v analog output for precise variable speed fan control.
The 17.609G series is engineered specifically for sub-critical refrigerant monitoring and head pressure management in commercial cooling loops and industrial chiller systems. Utilizing a high-grade 1.4542 (17-4PH) stainless steel diaphragm, this unit provides the necessary fatigue resistance to withstand the rapid pressure cycles and pulsations common in compressor discharge lines. Unlike standard industrial sensors that rely on internal elastomer O-rings, this version features a fully welded construction to eliminate potential leak paths, which is a critical design requirement when dealing with expensive or environmentally regulated refrigerants. The 0 to 225 psi gauge range is precisely scaled for low-to-medium pressure refrigerants, ensuring the 0-10Vdc analog output provides maximum signal resolution for variable frequency drive (VFD) fan controllers or building management system (BMS) inputs.
For design engineers focusing on long-term reliability in corrosive environments or systems using specialized lubricants, the 17.609G series employs 1.4571 (316Ti) titanium-stabilized stainless steel for the process connection. This material selection offers superior resistance to intergranular corrosion compared to standard 316 grades, making it ideal for rooftop condenser installations or coastal industrial sites where salt spray and high humidity are prevalent. The integrated 1/4″ flare process connection, conforming to 7/16″-20 UNF DIN 3866, allows for direct threading onto standard refrigeration service ports without the need for additional adapters or potential leak-inducing fittings. With an expansive media temperature tolerance of -40 to +125°C, the transducer remains stable even during high-discharge temperature phases, supported by a low thermal error coefficient of 0.03% FSO / °C to ensure accuracy is maintained across fluctuating seasonal ambient temperatures.
Integration of the 17.609G series is typically found in air-cooled condenser fan speed control systems where maintaining a constant head pressure is vital for expansion valve stability and overall system COP. It is also frequently specified for water-cooled chillers to monitor discharge pressure and prevent high-pressure trip scenarios in heavy-duty HVAC plant rooms. In research and development environments, these transducers are often utilized in environmental test chambers to provide precise feedback for PID control loops regulating refrigerant flow. The inclusion of an ISO 4400 plug connection ensures that instrument technicians can perform rapid field replacements or calibration checks, while the IP65 rating provides the necessary ingress protection against the heavy condensation and wash-down procedures common in food processing refrigeration setups.
17.609G Refrigeration Pressure Transducer
- 17.609G data sheet
- Pressure Range: 0 – 225 psi g
- Output: 0-10Vdc / 3 wire
- Supply Voltage: 8 – 32V dc
- Electrical Connection: Male & female plug ISO 4400 Male and female plug to ISO 4400
- Process Connection: 1/4″ flare (7/16″-20 UNF DIN 3866)
- Process Connection Material: Stainless Steel 1.4571 (316Ti)
- Seal Material: None (welded version)
- Diaphragm Material: Stainless Steel 1.4542 (17-4PH)
- Accuracy: 0.5% FSO
- IP Rating: 65
- Thermal Errors (TZS & TSS): ±0.03% FSO / °C
- Media Temperature: -40 to +125°C
- Operating Temperature: -40 to +85°C
- Housing Material: Stainless Steel 1.4301 (304)
- Special Options: None