ACI A/1K-2W-D-4"-BB : Duct Temperature Sensor, 1K Ohm Platinum RTD (Two Wires), 4" Duct Probe, Aluminum NEMA 3R Enclosure, Made in USA
The ACI Platinum Duct Series delivers precise temperature monitoring for your HVAC system with its high-quality stainless steel probe and color-coded Teflon wires for easy identification. Its proven double encapsulation process shields against moisture and ensures fast response times thanks to thermally conductive epoxy. Designed for smaller ducts, this single-point sensor features an insulation pad for airtight sealing and vibration dampening. Choose the ideal sensor length based on your duct size to get accurate readings from the center airflow. Optimize your HVAC performance and monitor critical temperatures in roof top units, air handlers, and supply/discharge/return/mixed air streams with the reliable ACI Platinum Duct Series.
Specifications:
| Sensor Type | Sensor Curve: | Platinum RTD | PTC (Positive Temperature Coefficient) |
| Number Sensing Points: | One |
| Number Wires: | Two (Non-Polarity Sensitive) |
| Sensor Output @ 0°C (32°F): | A/1K-xW-D Series: 1000 Ohms nominal |
| Sensor Accuracy @ 0°C (32°F): |
|
| Response Time (63% Step Change): | 8 Seconds nominal |
| Self-Heating | Maximum Operating Current: | 1K Ohm RTD: 4 mW/oC (Still Air) | 3 mA |
| Enclosure Specifications (Temperature, Material, Flammability, NEMA/IP Ratings): | “-BB” Enclosure: Aluminum, -40 to 121oC (-40 to 250oF), Plenum Rated, NEMA 3R |
| Storage Temperature Range: | -40 to 85°C (-40 to 185°F) |
| Operating Humidity Range: | 10 to 95% RH, non-condensing |
| Probe Material | Probe Diameter: | 304 Stainless Steel | 0.250” (6.35mm) |
| Fitting Material | Flammability Rating: | Polyamide 66 (High Performance Nylon) | UL94-HB |
| Foam Pad Material | Flammability Rating: | Neoprene/EPDM/SBR Polymer | UL94-HBF; FMVSS-302; MIL-R-6130C |
| Conductor Size: | 22 AWG (0.65 mm) |
| Agency Approvals: | CE, RoHS2, WEEE |
Data Sheets
 | Technical Data Sheet – ACI Duct Platinum RTD Temperature Sensor |
| Instruction – ACI Duct Platinum RTD Temperature Sensor |
- Sensor Type:
- Duct
- Temperature Element:
- 1K Platinum RTD
- Probe Length:
- 4
- Enclosure:
- Aluminum NEMA 3R Enclosure
- Supported Protocols:
- None
- Humidity Element:
- None
- CO2 Element:
- None
- Setpoint:
- No Setpoint
- Override:
- No
- Display:
- No Display
