ACI Thermistor Immersion

Features

  • ¼” diameter stainless steel probe with two, 14 inch 22 AWG Etched Teflon colored lead wires.
  • The immersion sensors include a welded thermowell “-I” version.
  • Can be ordered without the welded thermowell “-INW” version.
  • Optional NEMA/ IP rated enclosures and NIST certificates are available the back of the product data sheet.
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Automation Components, Inc. (ACI) creates, manufactures, and distributes building automation sensors for the heating, ventilation, and air conditioning (HVAC) Industry. Dpstar is ACI Authorised Distributor in Malaysia. Our product lines include Temperature Sensors, Relative Humidity Sensors, Current Sensors, Pressure Sensors, Gas Sensors, and Wireless Sensors.

The ACI Thermistor Immersion Series features a ¼” diameter stainless steel probe with two, 14 inch 22 AWG Etched Teflon colored lead wires depending on the probe length ordered 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 and to increase the response times using our high quality, thermally conductive epoxy. The immersion sensors include a welded thermowell “-I” version but can be ordered without the welded thermowell “-INW” version. The “INW” version includes a standard ½” NPS Male process thread to be used with an optional machined thermowell or in an existing thermowell application. Optional NEMA/ IP rated enclosures and NIST certificates are available the back of the product data sheet.

Applications

  • Chilled Water Systems
  • Hot Water Systems
  • Boilers
  • Pumps
  • Compressor
  • Chillers

The ACI Thermistor Bullet Probe Series is covered by ACI’s Five (5) Year Limited Warranty.

Specification

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/1.8K: 1.8KΩ nominal | Red/Yellow
A/3K: 3KΩ nominal | White/Brown
A/AN (Type III): 10KΩ nominal | White/White
A/AN-BC: 5.238KΩ nominal | White/Yellow
A/CP (Type II): 10KΩ nominal | White/Green
A/CSI: 10KΩ nominal | (Green/Yellow)
A/10KS: 10KΩ nominal | (White/Blue)
A/10K-E1: 10KΩ nominal | (Gray/Orange)
A/20K: 20KΩ nominal | (Brown/Blue)
A/50K: 50KΩ nominal | (Brown/Yellow)
A/100KS: 100KΩ nominal | (Black/Yellow)
Accuracy 0-70°C (32-158°F) +/-0.2ºC (+/-0.36ºF) except A/10K-E1 Series: +/- 0.3ºC (+/-0.54ºF)
A/1.8K Series: +/-0.5ºC @ 25ºC (77ºF) and (+/-1.0ºC) (+/-1.8ºF)
Stability Sensor Dependent; Contact ACI for more information on specific sensor
Response Time (63% Step Change) 10 Seconds nominal
Power Dissipation Constant 3 mW/ºC except A/1.8K Series: 1 mW/ºC | A/10K-E1 Series: 2 mW/ºC
Sensor Operating Temperature Range -40 to 150ºC (-40 to 302ºF)
Enclosure Specifications (Temperature, Flammability, NEMA/IP Ratings) “-GD” Enclosure: Galvanized Steel, -40°C to 121°C (-40°F to 250°F), NEMA 1 (IP10)
“-PB” Enclosure: ABS Plastic, -30°C to 90°C (-22°F to 194°F), UL94-HB, Plenum Rated
“-BB” Enclosure: Aluminum, -40°C to 121°C (-40°F to 250°F), Plenum Rated, NEMA 3R
“-4X” Enclosure: Polystyrene Plastic, -40°C to 70°C (-40°F to 158°F), UL94-V2, NEMA 4X (IP 66)
Storage Temperature Range -40 to 85ºC (-40 to 185ºF)
Operating Humidity Range 10 to 95% RH, non-condensing
Probe Diameter | Thermowell Bore Diameter 0.250″ (6.35mm) | 0.260″
Probe Material | Thermowell Material 304 Stainless Steel | 304 Series Stainless Steel
Thermowell Instrument | Process Thread Size ½” NPS (National Pipe Straight) Female Thread | ½” NPT (National Pipe Tapered) Male Thread
Fitting Material | Flammability Rating Polyamide 66 (High Performance Nylon 66) | UL94-HB
Fitting Thread Size ½” NPS (National Pipe Straight) Male Thread
Foam Pad Material | Flammability Rating Neoprene/EPDM/SBR Polymer | UL94-HBF; FMVSS-302; MIL-R-6130C
Lead Length | Conductor Size 14” (35.6 cm) | 22 AWG (0.65mm)
Lead Wire Insulation | Wire Rating Etched Teflon (PTFE) Colored Leads | Mil Spec 16878/4 Type E)
Conductor Material Silver Plated Copper

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