HF03 is a heat flux sensor that is applied in mobile measurements. It is combined with LI19, a high accuracy handheld read-out unit / datalogger. The combination HF03- LI19 is typically used to study heat flux levels of flares and fires, and to verify the performance of permanently installed flare radiation monitors and flare heat flux sensors.
HF03 is a heat flux sensor commonly used in fire testing
HF03 is a heat flux sensor commonly used in fire testing. It is designed for short (< 10 min) monitoring and measurement in high flux environments in the heat flux range up to 10 x 10³ W/m². LI19 displays the measured heat flux. Once programmed with the sensitivity of the connected sensor, the display will show the actual value of the heat flux in W/m². LI19 is programmed via its PC user interface. It communicates over USB. We recommend downloading the latest software. LI19 may also be used to store measured data. LI19 is battery powered, using 2 x AA-type batteries. Fresh batteries allow 50 days of operation. HF03-LI19 is not rated for EEx (potentially explosive) environments; nevertheless it is often admitted, because the instrument operates on 3 VDC only.
Operation
Operation of HF03-LI19 is easy. As LI19 has already been programmed at the factory, measurements can start by switching on the LI19. The data storage interval is set by using the LI19 user interface software.
Suggested Use
Areas of Application
Industrial monitoring and control / heat flux and heat transfer measurement
| Measurand | heat flux |
|---|---|
| Measurement range | 0 to 10 x 10³ W/m² |
| Rated exposure time interval | 0 to 10 min |
| Calibration traceability | to ITS90 |
| Standard cable length | 5 m |
| Output on display with HF03 | heat flux in x 10³ W/m² |
| Stored measurement definition | minimum maximum and average over storage interval with conversion to W/m² |
| A/D conversion | 16 bits |
| Temperature dependence | < 0.5 % + 3 x 10⁻⁶ V over rated range |
| Display refreshment rate | 1 s⁻¹ |
| Battery type | 2 x AA |
| Internal power supply voltage | 3 VDC |
| Battery life | > 50 days (on fresh batteries) |
| Storage interval range | 2 to 65535 s (selectable) |
| Storage capacity | 3518 measurements |
| Rated operating temperature range | -10 to +40 °C |
| User interface on PC | LI19 software |
| Connection to PC | USB 1.1 / 2.0 low speed |
