Chauvin Arnoux CA1864 Infrared Thermometer
The Chauvin Arnoux CA1864 Infrared Thermometer measures surface temperatures from −50°C to +1000°C without touching the object. It gives you a straightforward way to check temperatures and find hot spots during routine inspections.
A built-in laser helps you aim at the area you want to check. The pistol grip and trigger make the thermometer easy to operate with one hand, while the backlit screen keeps readings clear in darker conditions.
Simple Temperature Checks
Point the thermometer at the surface and press the trigger to take a reading. Keep the trigger pressed to measure continuously as you scan across an area.
When you release the trigger, the HOLD function keeps the last reading on the screen. This gives you time to check the result before the instrument switches off automatically.
Adjustable for Different Surfaces
Materials give off infrared energy differently. The CA1864 lets you adjust its emissivity setting from 0.1 to 1.0 to suit the surface being measured.
Choosing the appropriate setting helps the thermometer provide a more representative temperature reading. This is useful when your inspections involve different materials or surface finishes.
Track Changes and Set Alarms
The CA1864 includes four functions to help you understand your readings:
- MAX: shows the highest temperature measured.
- MIN: shows the lowest temperature measured.
- AVG: shows the average of the measured temperatures.
- DIF: shows the temperature difference from the initial reading.
You can also set high and low temperature alarms. These alert you when a reading falls outside your chosen limits, helping you identify areas that need closer attention.
Portable Design
The CA1864 weighs approximately 290 g and runs on a 9 V battery. It comes with a carrying case for transport and storage. Keep the thermometer and its operating manual together, ready to take to your next inspection on site.
Specifications:
| Feature | Specification |
| Manufacturer’s part number | P01651813 |
| Temperature range | −50°C to +1000°C |
| Distance-to-spot ratio | 30:1 |
| Emissivity | Adjustable from 0.1 to 1.0 |
| Temperature resolution | 0.1°C |
| Response time | Less than 1 second (t90) |
| Measurement units | °C and °F |
| Display | Backlit, 20,000 counts |
| Laser sight | Class II |
| Power supply | 9 V battery |
| Dimensions | 230 × 100 × 56 mm |
| Weight | Approximately 290 g |
Measurement Accuracy
Accuracy varies with the temperature being measured.
| Temperature Range | Accuracy |
| −50°C to −20°C | ±5°C |
| −20°C to +200°C | ±(1.5% of reading + 2°C) |
| +200°C to +538°C | ±(2.0% of reading + 2°C) |
| +538°C to +1000°C | ±(3.5% of reading + 5°C) |
What comes with the CA1864?
- Chauvin Arnoux CA1864 Infrared Thermometer
- Carrying case
- Operating manual
- 9 V battery
❓ Frequently Asked Questions (FAQ)
Q1: What does the 30:1 ratio mean?
A. It describes how the distance from the thermometer relates to the diameter of the area it measures. Moving further away increases the measurement area. The surface you want to check should fill that area.
Q2: Does the laser measure the temperature?
A. The laser helps you aim. The thermometer’s infrared sensor measures the surface temperature.
Q3: Can I choose Celsius or Fahrenheit?
A. Yes. The CA1864 lets you select either °C or °F to suit the way you work.