A/20K-I-2.5"-4X - The polycarbonate NEMA 4 immersion configuration is designed for wet environments and adds a level of corrosion resistance.  It has male 1/2" NPT threads and the sensing element is double encapsulated to avoid sensor failures caused by moisture infiltration.  ACI also standardizes with etched Teflon lead wires and a two part well is included with this configuration. ACI immersion temperature sensors are designed for HVAC Building Automation System and light industrial applications. Specific applications include: chiller hot water system tank and boilers. NOTE: Welded thermowells are not intended for moving water or high pressure service. Fluid velocity and wake frequency are primary factors in well failure. Machined thermowells should be used in these types of applications. Negative temperature coeffient double encapsulated sensor NEMA 4X enclosure

A/20K-I-2.5"-GD - The galvanized metal box with well configuration has male 1/2" NPT threads. The sensing element is double encapsulated to avoid sensor failures caused by moisture infiltration. ACI also standardizes with etched Teflon lead wires and wells must be ordered separately for this part. ACI immersion temperature sensors are designed for HVAC Building Automation System and light industrial applications. Specific applications include: chiller hot water system tank and boilers. NOTE: Welded thermowells are not intended for moving water or high pressure service. Fluid velocity and wake frequency are primary factors in well failure. Machined thermowells should be used in these types of applications. Negative temperature coeffient double encapsulated sensor Foam pad

IMMERSION SENSOR