CA2
The CA2 Laboratory Thermopile allows radiant fluxes to be measured. It is sensitive to radiation from 0.2 to 50 µm, and has a field of view of 10°. The field of view is determined by cylindrical brass housing, that contains a conical reflector and a removable glass window.
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Key features
- Sensitive to radiation from 0.2 to 50 µm
- Field of view of 10 °
The thermopile is very suitable for control (ovens) or demonstration (schools) purposes and can be used for reference-measurements.
The CA2 thermopile contains a thermal detector. It responds to the total power absorbed. Because the absorber is coated with Kipp & Zonen Carbon Black paint it is spectrally non-selective.
The thermopile output is a voltage that is proportional to the radiation that is received.
Irradiance measurements are easily affected by convection and thermal radiation losses to the environment. Therefore a glass window can shield the detector. By using this window, the spectral range is limited to 0.3 to 3 µm.
The thermopile is delivered with a calibration certificate.
Technical specification
| Spectral range (without window) | 0.2 to 50µm |
| Spectral range (with window) | 0.35 to 2.8µm |
| Sensitivity (Parallel beam on front window) | 7 to 20µV/W/m² |
| Impedance | 20 to 200Ω |
| Expected output range (0 to 1500 W/m²) | 0 to 30mV |
| Maximum operational irradiance | 2000 W/m² |
| Response time (63%) | < 6s |
| Response time (95%) | < 18s |
| Non-linearity (100 to 1000 W/m²) | < 1.5% |
| Field of view | 20° (for 90% of the received radiation) |
| Mounting rod | 170 mm long x 10 mm Ø |
| Detector type | Thermopile |
| Operational temperature range | -40°C to +80°C |
| Storage temperature range | -40°C to +80°C |
| Humidity range | 0 to 100% non-condensing |
| Ingress Protection (IP) rating | For use in clean indoor conditions only |
Related Documents
- CA2 Laboratory Thermopile Brochure (pdf 0.1MB)
