Used for rooftop unit and air handler duct monitoring, this duct temperature sensor reads -40 to 239°F (-40 to 115°C) with a 10 kΩ type III NTC thermistor. In addition, its 4" (10.2 cm) 304 stainless steel probe mounts on a galvanized steel flange with 10' (3.05 m) plenum-rated cable. An insulation pad seals the duct and dampens vibration.
Used for rooftop unit and air handler duct monitoring, this duct temperature sensor reads -40 to 239°F (-40 to 115°C) with a 10 kΩ type III NTC thermistor. In addition, its 4" (10.2 cm) 304 stainless steel probe mounts on a galvanized steel flange with 10' (3.05 m) plenum-rated cable. An insulation pad seals the duct and dampens vibration.
The ACI Thermistor Duct without Box Series features a stainless steel probe with two 22 AWG Etched Teflon colored lead wires to differentiate the different sensor types. The sensors in this series are manufactured using ACI’s proven double encapsulation process to eliminate the effects of moisture upon the sensors and increased response times using our high quality, thermally conductive epoxy. The duct style sensor is designed to be used in smaller duct applications and includes an insulation pad for sealing your duct as well as to dampen vibration.
For best results, the sensor length should be determined by the actual width or diameter of your duct such that the tip of the probe is in the approximate center of the duct. On larger ducts, you may want to refer to our Rigid or Bendable Copper Averaging sensor for increased sensing points and better temperature control. The Duct without Box Series can be ordered with optional plenum rated cables and NIST Certificates.
Applications
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 10 kΩ nominal (Type III) Lead wire colors: White/white Operating temperature range: -40 to 239°F (-40 to 115°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Duct without box (mounting flange only) |
| Performance | Stability: Sensor dependent; contact ACI for more information on the sensor in question Response time (63% step change): 10 seconds nominal Power dissipation constant: 3 mW/°C |
| Probe Material | 304 stainless steel |
| Flange Material | Galvanized Steel |
| 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 |
| Lead Wire | Length: 10' (3.05 m) Conductor size: 22 AWG (0.65 mm) Insulation: FEP (Fluorinated Ethylene Propylene) Wire rating: TYPE CL2P - TYPE CMP 22 AWG (UL), C(UL) FEP/FEP E130356 ROHS, FT-6 Conductor material: Tinned Copper Temperature rating: -112 to 302°F (-80 to 150°C) Rated applications: Suitable for Indoor and Outdoor (wet) location. Oil, Gas, Sunlight, Abrasion Acid Resistant |
| Environmental Conditions | Storage temperature range: -40 to 185°F (-40 to 85°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | UKCA, CE, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Probe length: 4" (10.2 cm) |
| Weight | 0.2 lbs (0.091 kg) |
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 10 kΩ nominal (Type III) Lead wire colors: White/white Operating temperature range: -40 to 239°F (-40 to 115°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Duct without box (mounting flange only) |
| Performance | Stability: Sensor dependent; contact ACI for more information on the sensor in question Response time (63% step change): 10 seconds nominal Power dissipation constant: 3 mW/°C |
| Probe Material | 304 stainless steel |
| Flange Material | Galvanized Steel |
| 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 |
| Lead Wire | Length: 10' (3.05 m) Conductor size: 22 AWG (0.65 mm) Insulation: FEP (Fluorinated Ethylene Propylene) Wire rating: TYPE CL2P - TYPE CMP 22 AWG (UL), C(UL) FEP/FEP E130356 ROHS, FT-6 Conductor material: Tinned Copper Temperature rating: -112 to 302°F (-80 to 150°C) Rated applications: Suitable for Indoor and Outdoor (wet) location. Oil, Gas, Sunlight, Abrasion Acid Resistant |
| Environmental Conditions | Storage temperature range: -40 to 185°F (-40 to 85°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | UKCA, CE, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Probe length: 4" (10.2 cm) |
| Weight | 0.2 lbs (0.091 kg) |
