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Engineered for large-duct mixed air monitoring, this averaging duct temperature sensor reads -40 to 302°F (-40 to 150°C) along 24' (7.3 m) of copper element with a 20 kΩ NTC thermistor. In addition, nine sensing points average the full duct cross-section. It includes nylon wire ties and mounts and a galvanized steel NEMA 1 enclosure.
Engineered for large-duct mixed air monitoring, this averaging duct temperature sensor reads -40 to 302°F (-40 to 150°C) along 24' (7.3 m) of copper element with a 20 kΩ NTC thermistor. In addition, nine sensing points average the full duct cross-section. It includes nylon wire ties and mounts and a galvanized steel NEMA 1 enclosure.
The ACI Thermistor Copper Averaging Series features a copper sensing element with AWG Etched Teflon colored lead wires to differentiate the different sensor types. Each sensor is manufactured with 4 or 9 sensing points determined by the length of the sensing element. The averaging sensors provide a better average temperature of the air inside the duct when compared to a single point duct sensor.
Each of the elements is sealed to prevent moisture intrusion and includes a foam pad to seal the duct and dampen vibrations. The benefits of using a copper sensing element is that it has improved thermal conductivity and higher corrosion resistance than similar aluminum style averaging sensors. Additionally, copper has been proven to have an antibacterial effect to many of the airborne contaminants, mold and bacteria found in duct systems.
Our standard enclosures include the galvanized “-GD” or plastic duct enclosure with hinged cover “-PB”. Each unit includes nylon wire ties and mounts with optional copper capillary and universal plastic mounting clips, NEMA/IP Rated Weather Proof enclosures and NIST certificates as referenced on the back of the product data sheet.
Applications
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: Nine Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 20 kΩ nominal Lead wire colors: Brown/blue Operating temperature range: -40 to 302°F (-40 to 150°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Bendable copper averaging |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 15 seconds nominal Power dissipation constant: 6 mW/°C |
| Sensor Material | Copper |
| Fitting | Material: Polyamide 66 (high performance nylon) Flammability rating: UL94-HB |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HBF; FMVSS-302; MIL-R-6130C |
| Enclosure | Material: Galvanized steel Operating temperature range: -40 to 239°F (-40 to 115°C) Rating: NEMA 1 (IP10) |
| Lead Wire | Length: 12" (30.5 cm) Conductor size: 26 AWG (0.40 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper |
| Environmental Conditions | Storage temperature range: -40 to 185°F (-40 to 85°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | RoHS2, WEEE |
| Dimensions | Sensor length: 24' (7.3 m) Sensing element diameter: 0.210" (5.34 mm) nominal |
| Weight | 2.2 lbs (0.998 kg) |
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: Nine Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 20 kΩ nominal Lead wire colors: Brown/blue Operating temperature range: -40 to 302°F (-40 to 150°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Bendable copper averaging |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 15 seconds nominal Power dissipation constant: 6 mW/°C |
| Sensor Material | Copper |
| Fitting | Material: Polyamide 66 (high performance nylon) Flammability rating: UL94-HB |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HBF; FMVSS-302; MIL-R-6130C |
| Enclosure | Material: Galvanized steel Operating temperature range: -40 to 239°F (-40 to 115°C) Rating: NEMA 1 (IP10) |
| Lead Wire | Length: 12" (30.5 cm) Conductor size: 26 AWG (0.40 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper |
| Environmental Conditions | Storage temperature range: -40 to 185°F (-40 to 85°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | RoHS2, WEEE |
| Dimensions | Sensor length: 24' (7.3 m) Sensing element diameter: 0.210" (5.34 mm) nominal |
| Weight | 2.2 lbs (0.998 kg) |
