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

The Automation Components Inc (ACI) A/CP-I-4 Sensor is a high-performance immersion temperature sensor designed for precise monitoring in hydronic HVAC systems. Featuring a 10K Type II thermistor, this sensor provides high-accuracy resistance output compatible with most Building Automation Systems (BAS). The 4-inch 304 stainless steel probe is double-encapsulated with thermally conductive epoxy to eliminate moisture infiltration and ensure a fast response time. This model includes a standard welded thermowell and a durable galvanized metal box (NEMA 1) for secure installation in chilled water systems, boiler loops, and industrial pump applications. With an operating range of -40° to 302°F, the ACI A/CP-I-4 is the industry standard for reliable liquid temperature sensing in demanding environments. Its rugged construction and NTC thermistor technology ensure long-term stability and energy-efficient HVAC performance by providing real-time data for chiller plant optimization.

Key Benefits

• High Accuracy: The 10K Ohm Type II thermistor ensures ±0.36°F precision for critical HVAC control.
• Moisture Resistance: Features a double-encapsulated probe to prevent sensor drift or failure in high-humidity applications.
• Rugged Housing: Includes a NEMA 1 galvanized enclosure with knockouts for simplified conduit wiring terminations.
• Versatile Integration: Compatible with leading building controllers for commercial boiler monitoring and cooling system diagnostics.
• Quick Response: The 1/4" diameter stainless steel probe and conductive epoxy allow for a 10-second nominal response time.

Common Questions

What is the difference between the Type II and Type III thermistor?
The Type II 10K thermistor used in this ACI sensor follows a specific resistance curve commonly required by Honeywell, Johnson Controls, and Distech systems. Always verify your controller's input requirements before installation.

Does this sensor include the thermowell?
Yes, the 'I' designation in the part number indicates that a 4-inch welded stainless steel thermowell is included, allowing for sensor replacement without draining the system.

Can this be used in outdoor applications?
The standard galvanized box is rated NEMA 1 for indoor use. For outdoor or wash-down environments, a NEMA 4X or 'BB' aluminum enclosure is recommended.

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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