Automation Components Inc (ACI) A/CP-INW-4-GD Thermistor

The ACI A/CP-INW-4-GD is a high-precision 10K Type II thermistor specifically engineered for immersion temperature sensing in HVAC Building Automation Systems. This single-point temperature sensor features a 4-inch stainless steel probe and a durable galvanized metal enclosure (NEMA 1 rated), making it an ideal choice for chilled water systems, hot water tanks, and commercial boilers. To ensure long-term reliability in demanding environments, the sensing element is double encapsulated to prevent failures from moisture infiltration. The A/CP-INW-4-GD includes 1/2 inch male NPT threads for installation but is provided in a no well configuration, meaning thermowells must be ordered separately. Standardized with etched Teflon lead wires (14-inch, 22 AWG), this negative temperature coefficient (NTC) sensor provides a resistance output of 10,000 Ohms at 77 degrees Fahrenheit. It is commonly used as a direct replacement for older ACI/-14-NW-GD models and is compatible with most industrial control systems.

Key Benefits:

• Enhanced Durability: The double encapsulated sensor design provides superior protection against moisture infiltration and thermal stress.
• Precise Monitoring: Delivers high-accuracy readings for hydronic HVAC applications with a 10K Ohm resistance curve.
• Versatile Enclosure: The galvanized metal box provides a robust housing for light industrial and commercial HVAC environments.
• Rugged Lead Wires: Features etched Teflon lead wires for chemical resistance and easy identification during installation.

Common Questions:

• Does this unit include a thermowell? No, this is an "INW" (Internally No Well) model. A separate machined or welded thermowell must be purchased for full immersion mounting.
• Can this be used in high-velocity water lines? While the sensor is built for immersion, welded thermowells are not recommended for high-pressure or high-velocity applications; a machined thermowell is required for those conditions.
• What leads are used for the 10K Type II element? ACI typically uses white and green etched Teflon wires to identify the Type II thermistor element.

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.

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