Overview
The percentage-level (%) R125 (Pentafluoroethane) thermal conductivity analyzer utilizes highly stable Thermal Conductivity Detection (TCD) technology. It is widely used in eco-friendly refrigerant blending, gaseous fire suppression system filling, fluorochemical synthesis process control, and refrigerant recovery/reclamation. Delivering precise, online measurements of R125 concentrations in binary or quasi-binary mixtures (such as R125/R32, R125/N₂, or R125/Air), it optimizes the blending ratios of mixed refrigerants (e.g., R410A), monitors cylinder filling saturation, and prevents gas loss, serving as essential instrumentation for quality assurance and safety.
Principle
When the sample gas enters the thermal conductivity cell, and a thermistor is used above the film to maintain a constant temperature. In this way, a small cavity is formed below and above the membrane, and the measurement gas can diffuse into it. In this way, the heat loss caused by the thermal conductivity of the sample gas is compensated by heating, and the power required to maintain a constant temperature of the membrane is a measurement of the thermal conductivity of the measured gas.
Application
• Eco-Friendly Refrigerant Blending & Manufacturing
R410A & R407C Composition Control: Continuous online monitoring of R125 concentration during the blending of multi-component refrigerants (such as R410A, which is a 50/50% mix of R125 and R32; or R407C) to ensure exact thermodynamic and thermodynamic properties before cylinder bottling.
Automated Charging Stations: Verifying the specific mix concentration of R125-based mixtures at air conditioner and heat pump assembly line charging stations to maintain product quality.
• Gaseous Fire Suppression Systems (Clean Agent Fire Extinguishers)
HFC-125 Fire Suppression Filling: Continuous measurement of R125 concentration during the pressure-filling and blanketing process of fire suppression cylinders, where R125 is pressurized with nitrogen (N2) propellant.
Leakage and Integrity Testing: Monitoring storage enclosure environments or testing manifolds for percentage-level R125 concentrations to verify valve seals and containment integrity in critical server rooms or historical archives.
• Fluorochemical Production & Catalyst Monitoring
Reactor Effluent Analysis: Tracking R125 yields and purity at the outlets of catalytic hydrofluorination reactors (where tetrachloroethylene is reacted with HF) to assess catalyst activity and process conversion rates.
Distillation Column Process Control: Online monitoring of R125 levels across different stages of rectification and purification columns in chemical plants to optimize separation efficiency.
• Refrigerant Recycling & Reclamation Systems
Reclaimed Gas Identification: Real-time analysis of returned, used refrigerant mixtures in reclamation facilities to separate and verify R125 purity before purification and re-blending.
Azeotropic Mixture Separation: Monitoring split streams in advanced separation processes designed to break down ozone-depleting and greenhouse-active F-gas mixtures.
Measurement components and ranges
• R125: 0 ~ 10% up to 100%(Vol)
For detailed introduction, please refer to Thermal Conductivity Analyzer.