Configured for rooftop unit and air handler duct monitoring, this duct temperature sensor reads -40 to 239°F (-40 to 115°C) with a 1000 Ω two-wire platinum RTD. In addition, its 8" (20.3 cm) 304 stainless steel probe mounts on a galvanized steel flange. An insulation pad seals the duct and dampens vibration.
Configured for rooftop unit and air handler duct monitoring, this duct temperature sensor reads -40 to 239°F (-40 to 115°C) with a 1000 Ω two-wire platinum RTD. In addition, its 8" (20.3 cm) 304 stainless steel probe mounts on a galvanized steel flange. An insulation pad seals the duct and dampens vibration.
The ACI Platinum Duct without Box Series features a 1/4" diameter stainless steel sensing element with two, 14 or 24", 22 AWG Etched Teflon colored lead wires to differentiate the different sensor types. The three-wire “-3W” option should be ordered if using with a 3-Wire temperature transmitter or sensor configuration on your building management system or PLC (Programmable Logic Controller). The purpose of the 3rd wire is to compensate for any external lead wire resistance that will affect the accuracy of your sensors output signal.
ACI recommends the use of 18 AWG lead wires to reduce the external lead wire resistance when using a Platinum RTD sensor and its lower sensor resolution. The 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 increased response times using our high quality, thermally conductive epoxy.
The duct style sensor is a single point sensor designed to be used in smaller duct applications and includes an insulation pad for properly sealing your duct as well as to dampen vibration. 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, jacket materials and standard lead lengths.
Applications
| Sensor | Type: Platinum RTD Curve: PTC (Positive Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 32°F (0°C): 1000 Ω nominal Operating temperature range: -40 to 239°F (-40 to 115°C) Accuracy: ±0.06% Class A (Tolerance formula: ±°C = (0.15°C + (0.002 * |t|)) where |t| is the absolute value of Temperature above or below 0°C in°C) -40°F (-40°C): ±0.23°C (±0.414°F) 32°F (0°C): ±0.15°C (±0.27°F) 239°F (115°C): ±0.38°C (±0.69°F) |
| Configuration | Duct without box (mounting flange only) |
| Performance | DIN standard: DIN EN 60751 (IEC 751) Temperature coefficient: 3850 ppm/°C Stability: ±0.03% after 1000 hours at 572°F (300°C) Response time (63% step change): 8 seconds nominal Self-heating: 4 mW/°C (Still Air) Maximum operating current: 3 mA |
| 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: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper Temperature rating: -67 to 392°F (-55 to 200°C) Rated applications: Suitable for Indoor and Outdoor (wet) location. Oil, Moisture, Acids, Oils and Moisture 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 | CE, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Probe length: 8" (20.3 cm) |
| Weight | 0.12 lbs (0.054 kg) |
| Sensor | Type: Platinum RTD Curve: PTC (Positive Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 32°F (0°C): 1000 Ω nominal Operating temperature range: -40 to 239°F (-40 to 115°C) Accuracy: ±0.06% Class A (Tolerance formula: ±°C = (0.15°C + (0.002 * |t|)) where |t| is the absolute value of Temperature above or below 0°C in°C) -40°F (-40°C): ±0.23°C (±0.414°F) 32°F (0°C): ±0.15°C (±0.27°F) 239°F (115°C): ±0.38°C (±0.69°F) |
| Configuration | Duct without box (mounting flange only) |
| Performance | DIN standard: DIN EN 60751 (IEC 751) Temperature coefficient: 3850 ppm/°C Stability: ±0.03% after 1000 hours at 572°F (300°C) Response time (63% step change): 8 seconds nominal Self-heating: 4 mW/°C (Still Air) Maximum operating current: 3 mA |
| 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: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper Temperature rating: -67 to 392°F (-55 to 200°C) Rated applications: Suitable for Indoor and Outdoor (wet) location. Oil, Moisture, Acids, Oils and Moisture 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 | CE, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Probe length: 8" (20.3 cm) |
| Weight | 0.12 lbs (0.054 kg) |
