Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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User Manual Instructions
Ultra sensitive sensor for measurement of small heat fluxes
HFP03 measures heat flux through the object in which it is incorporated or on which it is mounted, in W/m2. HFP03 is specifically suitable for measurement of small flux levels, in the order of less than 1 W/m2, for instance in geothermal applications. The sensor in HFP03 is a thermopile. This thermopile measures the temperature difference across the ceramics-plastic composite body of HFP03. A thermopile is a passive sensor; it does not require power. Using HFP03 is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m2 is calculated by dividing the HFP03 output, a small voltage, by the sensitivity. The sensitivity is provided with HFP03 on its calibration certificate.
1、Extremely small heat fluxes
2、Geothermal heat flux
1、Building physics / insulation, thermal comfort and energy budget measurement
2、Meteorology / surface energy flux measurement
3、Scientific research / heat and heat transfer measurement
| Measurand | heat flux |
| Measurement range | -2000 to +2000 W/m2 |
| Sensitivity (nominal) | 500 x 10?? V/(W/m2) |
| Sensing area | 64 x 10?? m2 |
| Sensor thermal resistance | 71 x 10?? K/(W/m2) |
| Sensor thickness | 5.4 x 10?3 m |
| Sensor resistance range | 10 to 32 Ω |
| Uncertainty of calibration | ± 6 % (k = 2) |
| Rated operating temperature range | -30 to +70 °C |
| Cable diameter | 4 x 10?3 m |
| IP protection class | IP67 |
| Standard cable length | 5 m |
| Options | ?Longer cable, in multiples of 5 m, cable lengths above 20 m in multiples of 10 |
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