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Thermistors Duct

This product is covered by ACI's Five (5) Year Limited Warranty. Learn more

Product overview

1,800 Ohm Thermistor, Duct, 8", Plastic Enclosure


  • Roof Top Units
  • Supply/Discharge/Return/Mixed Air Temperatures

Product specifications

Sensor Type:
Sensor Curve:
Non-Linear, NTC (Negative Temperature Coecient)
Number Sensing Points:
Number Wires:
Two (Non-Polarity Sensitive)
Sensor Accuracy:
+/-0.2ºC (+/-0.36ºF) A/10K-E1 Series: +/-0.3ºC (+/-0.54ºF) A/1.8K Series: +/- 0.5ºC @ 25ºC (77ºF) and (+/-1.0ºC) (+/-1.8ºF)
Power Dissipation Constant:
3 mW/ºC A/1.8K Series: 1 mW/ºC A/10K-E1 Series: 2 mW/ºC
Sensor Dependent; Contact ACI for more information on specific sensor
Response Time (63% Step Change):
10 Seconds nominal
Operating Temperature Range:
-40ºC (-40ºF) to 150ºC (302ºF)
Enclosure Temperature Rating:
“-GD” Enclosure: -40 to 115ºC (-40 to 239ºF), Galvanized Steel, NEMA 1 (IP10) “-PB” Enclosure: -30 to 100ºC (-22 to 212ºF), ABS Plastic, UL94-5VB, Plenum Rated “-BB” Enclosure: -40 to 115ºC (-40 to 239ºF), Aluminum, NEMA 3R (IP14) “-4X” Enclosure: -40 to 70ºC (-40 to 158ºF), Polystyrene Plastic, NEMA 4X (IP66)
Storage Temperature Range:
-40 to 85ºC (-40 to 185ºF)
Operating Humidity Range:
10 to 95% RH, non-condensing
Probe Material:
304 Stainless Steel
Probe Diameter:
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
Lead Length | Conductor Size:
4”, 6” and 8” Probes: 14” (35.6 cm) | 22 AWG (0.65 mm) 12” and 18” Probes: 24” (61 cm) | 22 AWG (0.65 mm)
Lead Wire Insulation | Wire Rating:
Etched Teflon (PTFE) Colored Leads | Mil Spec 16878/4 Type E)
Conductor Material:
Silver Plated Copper
Agency Approvals: