Suited for non-invasive pipe surface monitoring, this strap-on pipe temperature sensor clamps a 1.5" (3.81 cm) square copper plate to the pipe wall. In addition, a 10 kΩ type III NTC thermistor reads through the plate on 1-1/4 to 4" (32 to 100 mm) pipe, wired out of a plenum-rated ABS plastic enclosure. It suits retrofit chilled water and hydronic line monitoring.
Suited for non-invasive pipe surface monitoring, this strap-on pipe temperature sensor clamps a 1.5" (3.81 cm) square copper plate to the pipe wall. In addition, a 10 kΩ type III NTC thermistor reads through the plate on 1-1/4 to 4" (32 to 100 mm) pipe, wired out of a plenum-rated ABS plastic enclosure. It suits retrofit chilled water and hydronic line monitoring.
The ACI Thermistor Strap-On Series features a 1.5" square copper plate with the sensor encapsulated to the back side of the plate to improve the thermal conductivity between the pipe and the sensor when an Immersion style sensor can’t be inserted into the pipe. Each sensor has two, 14" 22 AWG Etched Teflon colored lead wires 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 upon the sensors as well as to improve the thermal response times using our high quality, thermally conductive epoxy. The Strap-On Series sensors can be used to monitor pipe sizes from 1-1/4" to 10" in diameter.
For best accuracy and increased thermal conduction between the pipe and the sensor, ACI recommends to clean the pipe before applying thermal grease as well as to insulate the sensor from the effects of the ambient air. Optional weather proof enclosure and NIST certificates are available upon request.
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 Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Strap-on |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 30 seconds nominal Power dissipation constant: 3 mW/°C |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HF1; MIL-R-6130C; FMVSS-302 |
| Enclosure | Material: ABS plastic Operating temperature range: -22 to 185°F (-30 to 85°C) Flammability rating: UL94-HB Rating: Plenum rated |
| Lead Wire | Length: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper |
| Acceptable Pipe Size | 1-1/4" (32 mm) to 4" (100 mm) |
| Environmental Conditions | Storage temperature range: -40 to 176°F (-40 to 80°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | CE, RoHS2, WEEE |
| Weight | 0.4 lbs (0.18 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 Accuracy: ±0.36°F (±0.2°C), from 32 to 158°F (0 to 70°C) |
| Configuration | Strap-on |
| Performance | Stability: Sensor dependent; contact ACI for more information on specific sensor Response time (63% step change): 30 seconds nominal Power dissipation constant: 3 mW/°C |
| Foam Pad | Material: Neoprene/EPDM/SBR polymer Flammability rating: UL94-HF1; MIL-R-6130C; FMVSS-302 |
| Enclosure | Material: ABS plastic Operating temperature range: -22 to 185°F (-30 to 85°C) Flammability rating: UL94-HB Rating: Plenum rated |
| Lead Wire | Length: 14" (35.6 cm) Conductor size: 22 AWG (0.65 mm) Insulation: Etched Teflon (PTFE) colored leads Wire rating: MIL-W-16878/4 (Type E) Conductor material: Silver plated copper |
| Acceptable Pipe Size | 1-1/4" (32 mm) to 4" (100 mm) |
| Environmental Conditions | Storage temperature range: -40 to 176°F (-40 to 80°C) Operating humidity range: 10 to 95% RH, non-condensing |
| Agency Approvals | CE, RoHS2, WEEE |
| Weight | 0.4 lbs (0.18 kg) |
