Specifications
GG01
| Measurand | heat flux |
| Measurement range | (250, 500, 1000) x 10³ W/m² |
| Measurand in SI units | irradiance in W/m² |
| Sensor technology | Gardon |
| Rated cooling water flow (see manual for more information) | > 50 l/h (0.014 l/s) |
| Nominal response time (63 %) at different rated measurement ranges | |
| 250 x 10³ W/m² | 250 x 10⁻³ s |
| 500 x 10³ W/m² | 200 x 10⁻³ s |
| 1000 x 10³ W/m² | 100 x 10⁻³ s |
| Limiting measurement range | 150 % of rated measurement range |
| Output signal | DC voltage |
| Output signal range | > 5 x 10⁻³ V at rated measurement range |
| Full field of view angle | 180° |
| Calibration traceability | to ITS-90 |
| Calibration laboratory | |
| -management system certification | ISO 9001 |
| -accreditation | not accredited |
| Calibration method | secondary calibration method according to ISO 14934-3 |
| Standard cable length | 2 m (see options) |
| Order code standard version | GG01/rated measurement range/cable length |
Options
Downloads
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HFP01SC measures soil heat flux in W/m²
HFP01SC measures soil heat flux in W/m². It is used when the highest level of quality assurance and a high measurement accuracy are required. In essence, HFP01SC is a combination of a heat flux sensor and a film heater. The heat flux sensor output is a voltage signal that is proportional heat flux through the sensor. At a regular interval the film heater is activated to perform a self-test (see figure 4). The self-test results in a verification of sensor contact to the soil and in a new sensitivity that is valid for the circumstances at that moment. The latter is called self-calibration. Implicitly also cable connection, data acquisition and data processing are tested. The result is a much improved accuracy & quality assurance of the measurement relative to measurements with conventional sensors such as model HFP01.
Unique features and benefits
- low thermal resistance
- large guard area (required by the ISO 9869 standard)
- low electrical resistance (low pickup of electrical noise)
- high sensitivity (good signal to noise ratio in low-flux environments)
- robustness, including a strong cable (essential for permanently installed sensors)
- IP protection class: IP67 (essential for outdoor application)
- incorporated film heater for self-testing
Suggested use
- high-accuracy scientific measurement of soil heat flux, with a high level of data quality assurance
HFP01SC heat flux sensor
- low thermal resistance
- large guard area (required by the ISO 9869 standard)
- low electrical resistance (low pickup of electrical noise)
- high sensitivity (good signal to noise ratio in low-flux environments)
- robustness, including a strong cable (essential for permanently installed sensors)
- IP protection class: IP67 (essential for outdoor application)
- incorporated film heater for self-testing
