Automation Components Inc (ACI) A/AN-I-4-GD Sensor

The Automation Components Inc (ACI) A/AN-I-4-GD Sensor is an industrial-grade immersion temperature sensor engineered for precise monitoring in HVAC Building Automation Systems (BAS). This 10K Type III thermistor features a 4-inch stainless steel probe and is housed in a durable galvanized metal enclosure designed for long-term reliability in light industrial environments. Built with ACI's proprietary double encapsulation process, the sensing element is protected against moisture infiltration using a high-quality, thermally conductive epoxy that also improves response times. The unit includes 14-inch etched Teflon lead wires (22 AWG) for easy identification and superior resistance to chemical or thermal degradation. Ideal for chillers, hot water systems, and industrial boilers, the A/AN-I-4-GD provides a 10K Ohm resistance output compatible with most modern controllers. This part is a direct equivalent to the ACI/10K-AN-I-4-GD and features a 1/2" NPT male thread for standard well mounting. Please note that while a welded thermowell is included in some configurations, machined wells are recommended for high-velocity or high-pressure fluid applications.

Key Benefits:

• Enhanced Moisture Protection: Features a double encapsulated sensor to prevent failures in high-humidity or condensing environments.
• Universal Compatibility: Uses a 10K Type III thermistor curve, making it compatible with a wide range of BAS and HVAC controllers.
• Durable Construction: The galvanized steel enclosure provides a NEMA 1 rating, ensuring protection for internal wiring in mechanical rooms.
• Rapid Thermal Response: Thermal conductive epoxy reduces lag time for more accurate system adjustments.
• Flexible Installation: Integrated 1/2" NPT threads and etched Teflon leads simplify mounting and wiring in chilled water systems.

Common Questions:

Can this sensor be used in high-pressure steam lines?
The provided welded thermowells are designed for standard HVAC applications. For high-pressure service or moving water with high velocity, a machined thermowell should be used to prevent well failure due to wake frequency.

What is the difference between the A/AN-I-4-GD and the ACI/10K-AN-I-4-GD?
These two part numbers are identical in specifications and performance; they represent the same 10K Ohm Type III 4-inch immersion sensor.

Do I need to apply thermal grease to the probe?
While the ACI wells are milled to tight tolerances for excellent heat transfer, using a thermal conductive compound like TCC-12 can further improve accuracy and response speed.

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.

This item is not eligible for free shipping.