Emerson Alco 065408 Moisture Indicator

As a seasoned tech, you know that keeping a system dry is non-negotiable for compressor longevity. The Emerson Alco 065408 (Model HMI-1TT5) is the industry standard for real-time monitoring of moisture levels and liquid line status. Built with a fully hermetic, leak-free construction, this 5/8" Sweat (ODF) indicator features an all-brass corrosion-resistant body and solid copper connections, ensuring it stands up to the vibration and thermal cycling of commercial refrigeration and A/C units. With a 680 PSI maximum working pressure, it is fully compatible with CFC, HCFC, and HFC refrigerants, including high-pressure R-410A systems and POE lubricants. The high-sensitivity element provides accurate color calibration at low PPM levels, even in high-temperature environments, visible through a wide-angle viewing window. Whether you are checking for a saturated filter drier or confirming a full head of liquid, this refrigerant sight glass is a critical diagnostic component for any professional installation.

• Universal Compatibility: Engineered for use with all common refrigerants and both mineral and POE oils.
• High Sensitivity: Precise color-changing element detects moisture at levels as low as 3% R.H. to prevent acid formation.
• Rugged Hermetic Build: Eliminates common leak points found in gasketed sight glasses for long-term system integrity.
• Field Visibility: Large, wide-angle lens allows for clear inspection of bubbles or flash gas from multiple positions.

• Is this indicator compatible with R-410A? Yes, the 680 PSIG rating meets the requirements for high-pressure R410A liquid lines.
• Can it be used with POE oil? Absolutely. The internal moisture element is specifically designed to remain accurate and stable in systems using Polyolester lubricants.
• What does a "yellow" indicator signify? A yellow reading typically indicates moisture concentrations above 100-150 ppm, signaling that a filter-drier change-out is required.

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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.