The EMERSON Liquid Moisture Indicator is a compact device featuring a clear glass window (sight glass) with a color-changing moisture indicator inside. The indicator changes color based on the amount of moisture present in the liquid refrigerant.
Typically installed on the liquid line, it allows technicians to quickly check refrigerant conditions and detect potential problems such as moisture contamination or refrigerant shortage.
Clear and Accurate Color Indication
Uses a high-visibility chemical indicator that changes color based on moisture content — green indicates “dry,” while yellow shows “moisture contamination.” The color scale follows international standards, making moisture diagnosis simple and reliable.
The high-quality transparent glass window is pressure-resistant and resistant to refrigerants, ensuring clear visibility without fogging or staining.
Durable Brass Construction
The indicator body is made from corrosion-resistant brass, designed to withstand high pressure and temperature variations in refrigeration systems. It ensures long service life and durability even in harsh operating conditions.
Refrigerant Compatibility
Suitable for use with a wide range of refrigerants, including HFCs, HCFCs, and certain natural refrigerants.
The transparent window also enables flow observation, helping identify refrigerant shortage or circulation problems if excessive bubbles appear.
Moisture Detection for System Protection
Detects moisture contamination early, preventing acid formation, corrosion, and ice blockages that could damage system components.
Color change alerts technicians to take corrective actions promptly — such as replacing the filter drier.
Refrigerant Charging Verification
During system charging, the indicator helps monitor refrigerant flow — visible bubbles can indicate undercharging or improper filling levels.
System Diagnostics
Continuous bubble flow, even after proper charging, can indicate issues such as malfunctioning expansion valves or air ingress into the system.
Compressor Protection and Longevity
By reducing moisture-related acid and ice formation, the indicator helps protect the compressor — the heart of the system — and extends its operational life.
Preventive Maintenance
Enables ongoing system monitoring and proactive maintenance, helping technicians identify potential issues before they cause costly downtime.
