Emerson Alco 042771 Moisture Indicator

The Emerson Alco AMI-1TT3 (042771) is an industrial-grade refrigerant moisture indicator designed for precise visual monitoring of system conditions. Engineered with 3/8" ODF sweat connections and extended copper ends, this unit allows for brazing without disassembly, maintaining the integrity of the internal seals. It features a high-visibility color-coded sight glass that provides real-time diagnostics of moisture levels in the liquid line, crucial for preventing acid formation and compressor failure. Rated for a maximum working pressure of 650 PSI, the AMI-1TT3 is fully compatible with CFC, HCFC, and HFC refrigerants, including high-pressure R-410A systems. The solid brass body construction and wide-angle viewing lens ensure durability and accuracy in demanding HVACR environments. This liquid line sight glass is a vital component for technicians performing system dehydration verification and monitoring for refrigerant undersupply or flash gas issues during peak load operations.

• Extended Copper Ends: Simplifies installation by allowing direct brazing while protecting the internal moisture-sensitive element.
• Multi-Refrigerant Capability: Engineered for versatility across R-22, R-134a, R-404A, and R-410A applications.
• Accurate Moisture Detection: Features a sensitive indicator element that changes color based on parts per million (PPM) of water contamination.
• High Pressure Rating: Built to withstand commercial 650 PSI operating thresholds without leaking or glass failure.
• Wide-Angle Visibility: Large viewing area permits quick assessment of refrigerant clarity and bubble-free liquid flow.

What does a yellow indicator signify in the AMI-1TT3?
A yellow hue indicates high moisture content, signaling that the filter drier is saturated and must be replaced to prevent system acidification.

Is the Alco 042771 compatible with POE oils?
Yes, the moisture indicator remains accurate and functional in systems utilizing Polyolester (POE) lubricants as well as mineral oils.

Can this sight glass detect a low refrigerant charge?
While its primary role is moisture detection, the sight glass reveals bubbles or foaming in the liquid line, which often indicates a refrigerant leak or insufficient charge.

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.