ACI A/20K-DO-4" : Duct Temperature Sensor, 20K Thermistor, 4" Probe Length, Flange Mount
ACI duct-mounted thermistors, crafted with rugged stainless steel probes and double-encapsulated for superior moisture resistance, deliver accurate air temperature readings in even the tightest spaces. High-quality thermal epoxy ensures fast response times, while the included insulation pad dampens vibration and seals your duct seamlessly. Choose the perfect sensor length to reach your duct's center (width or diameter) and monitor supply, discharge, return, and mixed air temperatures with ease. Ideal for roof-top units and air handlers, ACI Thermistor Duct Sensors are the key to optimal airflow control and system performance.
Key Features:
- Double encapsulation: ACI's unique double encapsulation process protects the sensor from moisture and ensures fast response times.
- Accurate and reliable: These thermistors offer exceptional accuracy (±0.2°C) and a quick response time (10 seconds).
- Wide range of applications: Suitable for monitoring air temperatures in roof top units, air handlers, and supply,discharge, return, and mixed air ducts.
Specifications:
| Sensor Type | Sensor Curve: | Thermistor | Non-Linear, NTC (Negative Temperature Coefficient) |
| Number Sensing Points | Number Wires: | One | Two (Non-Polarity Sensitive) |
| Sensor Output @ 25°C (77°F) | (Lead Wire Colors): | A/20K: 20KΩ nominal | (Brown/Blue) |
| Sensor Accuracy 0-70°C (32-158°F): | +/-0.2°C (+/-0.36°F) |
| Response Time (63% Step Change): | 10 Seconds nominal |
| Sensor Operating Temperature Range: | -40°C (-40°F) to 150°C (302°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 No Box Thermistor Temperature Sensor |
| Instruction – ACI Duct Thermistor Temperature Sensor |
- Sensor Type:
- Duct
- Temperature Element:
- 20K
- Probe Length:
- 4
- Enclosure:
- No Box / Flange
- Lead Length:
- 24 Inch Etched Teflon Leads
- Supported Protocols:
- None
- Humidity Element:
- None
- CO2 Element:
- None
- Setpoint:
- No Setpoint
- Override:
- No
- Display:
- No Display
