Measuring -40 to 302°F (-40 to 150°C), this immersion temperature sensor uses a 10 kΩ type III NTC thermistor. In addition, its 1/4" (6.35 mm) probe inserts 4" (101.6 mm) through a welded 304 stainless steel thermowell and terminates in a galvanized steel NEMA 1 enclosure. It suits boiler, chiller and pump water temperature monitoring.
Measuring -40 to 302°F (-40 to 150°C), this immersion temperature sensor uses a 10 kΩ type III NTC thermistor. In addition, its 1/4" (6.35 mm) probe inserts 4" (101.6 mm) through a welded 304 stainless steel thermowell and terminates in a galvanized steel NEMA 1 enclosure. It suits boiler, chiller and pump water temperature monitoring.
The ACI Thermistor Immersion Series features a 1/4" (6.35 mm) diameter stainless steel probe with two, 14" (35.6 cm), 22 AWG (0.65 mm) 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 1/2" 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
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 10 kΩ nominal (Type III) Lead wire colors: White/white Operating temperature range: -40 to 302°F (-40 to 150°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Immersion with Welded Thermowell |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 10 seconds nominal Power dissipation constant: 3 mW/°C |
| Probe Material | 304 stainless steel |
| Fitting | Material: Polyamide 66 (high performance nylon 66) Flammability rating: UL94-HB Thread size: 1/2" NPS (National Pipe Straight) male thread |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HBF; FMVSS-302; MIL-R-6130C |
| Thermowell | Material: 304 stainless steel Type: Welded (sealed) two-part fabricated Bore diameter: 0.26" (6.6 mm) Instrument thread: 1/2" NPS (National Pipe Straight) female thread Process thread size: 1/2" NPT (National Pipe Tapered) male thread |
| Enclosure | Material: Galvanized steel Operating temperature range: -40 to 250°F (-40 to 121°C) Rating: NEMA 1 (IP10) |
| Lead Wire | Length: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: Mil Spec 16878/4 Type E Conductor material: Silver plated copper |
| 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, UKCA, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Insertion length: 4" (101.6 mm) |
| Weight | 1 lbs (0.454 kg) |
| Sensor | Type: Thermistor Curve: Non-linear, NTC (Negative Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 77°F (25°C): 10 kΩ nominal (Type III) Lead wire colors: White/white Operating temperature range: -40 to 302°F (-40 to 150°C) Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Immersion with Welded Thermowell |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 10 seconds nominal Power dissipation constant: 3 mW/°C |
| Probe Material | 304 stainless steel |
| Fitting | Material: Polyamide 66 (high performance nylon 66) Flammability rating: UL94-HB Thread size: 1/2" NPS (National Pipe Straight) male thread |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HBF; FMVSS-302; MIL-R-6130C |
| Thermowell | Material: 304 stainless steel Type: Welded (sealed) two-part fabricated Bore diameter: 0.26" (6.6 mm) Instrument thread: 1/2" NPS (National Pipe Straight) female thread Process thread size: 1/2" NPT (National Pipe Tapered) male thread |
| Enclosure | Material: Galvanized steel Operating temperature range: -40 to 250°F (-40 to 121°C) Rating: NEMA 1 (IP10) |
| Lead Wire | Length: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: Mil Spec 16878/4 Type E Conductor material: Silver plated copper |
| 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, UKCA, RoHS2, WEEE |
| Dimensions | Probe diameter: 0.25" (6.35 mm) Insertion length: 4" (101.6 mm) |
| Weight | 1 lbs (0.454 kg) |
