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Measuring -40 to 392°F (-40 to 200°C), this immersion temperature sensor uses a 1000 Ω two-wire platinum RTD. In addition, its 1/4" (6.35 mm) probe inserts 2.5" (63.5 mm) through a machined 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 392°F (-40 to 200°C), this immersion temperature sensor uses a 1000 Ω two-wire platinum RTD. In addition, its 1/4" (6.35 mm) probe inserts 2.5" (63.5 mm) through a machined 304 stainless steel thermowell and terminates in a galvanized steel NEMA 1 enclosure. It suits boiler, chiller and pump water temperature monitoring.
The ACI Platinum Immersion Series features a stainless steel probe with Etched Teflon colored lead wires to differentiate the different sensor types. The three-wire “-3W” option should be ordered when using with a 3-Wire temperature transmitter or sensor configuration on your building management system or PLC (Programmable Logic Controller). The purpose of the 3rd wire is to compensate for external lead wire resistance that affects the sensor output.
ACI recommends the use of 18 AWG (1.02 mm) lead wires to reduce the external lead wire resistance when using a Platinum RTD. The sensors in this series are manufactured using ACI’s proven double encapsulation process to eliminate the effects of moisture upon the sensors and to increase thermal response times using our high quality, thermally conductive epoxy.
The immersion sensors “-I” include a welded thermowell but can be ordered without the thermowell “-INW” version. The “-INW” includes a standard 1/2" NPS process thread to be used with an optional machined thermowell or an existing thermowell application. Optional NEMA/IP rated weather proof enclosures and NIST Certificates are available as referenced on this product data sheet.
Applications
| Sensor | Type: Platinum RTD Curve: PTC (Positive Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 32°F (0°C): 1000 Ω nominal Operating temperature range: -40 to 392°F (-40 to 200°C) Accuracy: ±0.06% Class A (Tolerance formula: ±°C = (0.15°C + (0.002 * |t|)) where |t| is the absolute value of Temperature above or below 0°C in°C) -40°F (-40°C): ±0.23°C (±0.414°F) 32°F (0°C): ±0.15°C (±0.27°F) 392°F (200°C): ±0.55°C (±1°F) |
| Configuration | Immersion with machined thermowell |
| Performance | DIN standard: DIN EN 60751 (IEC 751) Temperature coefficient: 3850 ppm/°C Stability: ±0.03% after 1000 hours at 572°F (300°C) Response time (63% step change): 8 seconds nominal Self-heating: 4 mW/°C (Still Air) Maximum operating current: 3 mA |
| 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: Machined 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: 2.5" (63.5 mm) |
| Weight | 1 lbs (0.454 kg) |
| Sensor | Type: Platinum RTD Curve: PTC (Positive Temperature Coefficient) Sensing points: One Number of wires: Two (non-polarity sensitive) Output at 32°F (0°C): 1000 Ω nominal Operating temperature range: -40 to 392°F (-40 to 200°C) Accuracy: ±0.06% Class A (Tolerance formula: ±°C = (0.15°C + (0.002 * |t|)) where |t| is the absolute value of Temperature above or below 0°C in°C) -40°F (-40°C): ±0.23°C (±0.414°F) 32°F (0°C): ±0.15°C (±0.27°F) 392°F (200°C): ±0.55°C (±1°F) |
| Configuration | Immersion with machined thermowell |
| Performance | DIN standard: DIN EN 60751 (IEC 751) Temperature coefficient: 3850 ppm/°C Stability: ±0.03% after 1000 hours at 572°F (300°C) Response time (63% step change): 8 seconds nominal Self-heating: 4 mW/°C (Still Air) Maximum operating current: 3 mA |
| 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: Machined 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: 2.5" (63.5 mm) |
| Weight | 1 lbs (0.454 kg) |
