Introduction
The CA 2 Laboratory Thermopile is designed to measure the intensity of radiant fluxes across a wide wavelength range from 0.2 to 50 µm. It features a 20° field of view, capturing 90% of received radiation, making it suitable for targeted measurements from specific sources.

Specifications
- Spectral Range: 0.2 to 50 µm without window; 0.35 to 2.8 µm with window.
- Sensitivity: 7 to 20 µV/W/m².
- Impedance: 20 to 200Ω.
- Output Range: 0 to 30mV for irradiance levels from 0 to 1500 W/m².
- Maximum Operational Irradiance: 2000 W/m².
- Response Time: Less than 6 seconds for 63% response, less than 18 seconds for 95% response.
- Non-linearity: Less than 1.5% for irradiance levels between 100 to 1000 W/m².
- Field of View: 20° for 90% of received radiation.
- Mounting Rod: 170 mm long x 10 mm Ø.
- Detector Type: Thermopile.
- Temperature Range: -40°C to +80°C for both storage and operation.
- Humidity Range: 0 to 100% non-condensing.

Design and Functionality
The thermopile detector is coated with a spectrally non-selective black material, allowing it to respond to the total absorbed power. The output is a voltage proportional to the received radiation. A removable glass window can limit the spectral range to 0.3 to 3 µm, reducing environmental interference.

Applications
The CA 2 is ideal for control applications such as ovens, educational demonstrations, and reference measurements in optical laboratories. It can be easily mounted using standard optical bench clamps, and connections can be made via bare wires or 4 mm banana plugs.

Additional Information
The device is intended for use in clean indoor conditions only, with an ingress protection rating suitable for such environments. Kipp & Zonen B.V. reserves the right to alter specifications without prior notice.