ACI A/20K-O-BB : Weatherproof Outdoor Temperature Sensor, 20K Thermistor, Aluminum NEMA 3R Enclosure

ACI A/20K-O-BB : Weatherproof Outdoor Temperature Sensor, 20K Thermistor, Aluminum NEMA 3R Enclosure

Applications:

• Outside Air Temperature Sensing
• Cold Storage Facilities
• High Dew Point/Condensing Environments

The ACI Thermistor Outside Air Series features a weatherproof European Style Plastic enclosure with twist off cover and watertight cord grip fitting. The sensing element contains two, 14 inch 22 AWG Etched Teflon colored lead wires to differentiate the many different sensor types. All sensors in this series are manufactured using ACI’s proven double encapsulation process to eliminate the effects of moisture upon the sensors as well as to increase the thermal response time using our high quality, thermally conductive epoxy. The outside air sensor is a single point sensor designed to be mounted under an eave or on the North side of a building in a shaded location. The sensing tube pointed must be pointed downward to prevent any water or ice from settling in the sensing tube.

• Sensor Type | Sensor Curve: Thermistor | Non-Linear, NTC (Negative Temperature Coefficient)
• Number Sensing Points: One
• Number Wires: Two (Non-Polarity Sensitive)
• Sensor Output @ 25 °C (77 °F) (Lead Wire Colors):
  • A/20K: 20KΩ nominal | (Brown/Blue)
• Stability: Sensor Dependent; Contact ACI for more information on specific sensor
• Response Time (63% Step Change): 25 Seconds nominal
• Operating Temperature Range: -40 to 70°C (-22 to 158°F)
• Storage Temperature Range: -40 to 70°C (-22 to 158°F)
• Operating Humidity Range: 10 to 100% RH
• Lead Length | Conductor Size:  14” (35.6cm) | 22 AWG (0.65mm)
• Lead Wire Insulation | Wire Rating: Etched Teflon (PTFE) Colored Leads | MIL-W-16878/4 (Type E)
• Conductor Material: Silver Plated Copper
• Agency Approvals: CE, RoHS2, WEEE

Data Sheets

	Data Sheet - Outside Air - Thermistors
	Instruction - Outside Air