R10 Compact Fixed Infrared Sensor

Compact, low cost infrared sensor. Temperature range 32° to 932°F (0° to 500°C), 20:1 distance to spot ratio, and spectral range of 8 – 14 μm.
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The Wahl Heat Spy Monitor R10 Series Compact Fixed Infrared Sensor is the entry level model in our "R" series of fixed infrared sensors. The 304 Stainless Steel housing is IP65 (NEMA 4) rated, and allows the unit to function in ambient temperatures up to 122°F with no additional cooling required. All models are powered by 24VDC to easily interface with standard PLCs, temperature controllers, or panel meters.

This model has a temperature range of 0 to 500°C (32 to 932°F) and features 4 – 20 mA output. The 20:1 distance to spot ratio is perfect for measuring smaller target areas, or in applications where the distance between the sensor and the measurement area is larger. The rated accuracy is ± 1% of reading, and the fixed emissivity at 0.95 is suitable for measuring a wide variety of materials.

Designed for quick and easy installation, with 5 ft (1.5 meters) of cable or 10 ft (3 meters) of cable available to meet the requirements of your system. Sensor includes two stainless steel locking nuts for mounting in an 18mm or ¾ inch diameter hole.

One axis and two axis mounting brackets, air purge, and air or water cooling jackets are available, sold separately.

Buy online at WahlHeatSpy.com


Weight 12 oz
Dimensions 7 × 1.5 × 7 in



24 AWG. Shielded 2 Conductor, PVC Insulated

Cable Length

5 feet (1.5 meters), 10 feet (3 meters)



Temperature Measurement Range

0° to 500°C, 32° to 932°F

Distance to Spot Ratio



0° to 50°C: > 2°C; > 50° to 500°C: ±1% of reading or ±2°C


1% or ±1°C


120 µA, 0.3°C

Response Time

500 mS


0.95 fixed



Sensor: Ambient

0° to 50°C (32° to 122°F)

Sensor: With Air Cooling

0° to 90°C (32° to 194°F)

Sensor: With Water Cooling

0° to 200°C (32° to 392°F)

Sensor: Storage

-20° to 70°C (-4° to 158°F)

Sensor: Relative Humidity

10% - 95% non-condensing

Sensor: Protection Class

IP65 (NEMA 4)

Sensor: Shock


Sensor: Vibration


Sensor: Housing Material

304 Stainless Steel

Sensor: Dimensions

18 x 120 mm / Thread: M18 x 1

Sensor: Weight


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