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HFD8

Heat Field Deformation

ICT International

Solutions for soil, plant & environmental monitoring

Содержание HFD8

Страница 1: ...HFD8 Heat Field Deformation ICT International Solutions for soil plant environmental monitoring...

Страница 2: ...hen handling or transporting the needles Once installed in sleeves within the tree the needles are very robust NOTE the needles gain much of their structural strength when combined with the sleeves 1...

Страница 3: ...the instrument where the needles exit Before use the instrument MUST be charged To choose from a range of charging options see section 3 Charging Powering the Instrument The unique power bus plug des...

Страница 4: ...wer Supply to the Instrument 3 1 1 Individual Power Supply Connections 1 2 3 4 5 6 7 8 9 10 1 12V Solar Panel Only 2 12V Solar Panel and Battery 3 12V DC Power Supply Remove both ICT bus plugs from on...

Страница 5: ...3 2 Connecting Power Directly via Solar Panel HFD8...

Страница 6: ...3 3 Connecting Power via External 12V Battery HFD8...

Страница 7: ...3 4 Connecting Power via External 12V Battery and Solar Panel HFD8...

Страница 8: ...3 5 Sharing an External 12V Battery and Solar Panel via Daisy Chaining HFD8 HFD8 HFD8...

Страница 9: ...a USB cable connected to a PC The HFD Sap Flow Meter can be charged directly from any computers USB port 6 Connect to the Instrument Connect the USB cable to the instrument The HFD8 will automaticall...

Страница 10: ...d attach a Comment Entries in these fields will be recorded in a header line within the data file and can be beneficial to recalling important aspects of the experiment after data has been collected E...

Страница 11: ...the instrument or treatment and identify its location as it is the Name field which is displayed along with the serial number when connecting to the instrument This is especially valuable if connecti...

Страница 12: ...een the needle and the sleeve to ensure good thermal coupling with the stem Two sizes of drill bit are supplied with the installation kit 1 9 mm and 2 0 mm It is recommended that holes be drilled with...

Страница 13: ...e without the sleeves having become blocked by sap resin NOTE if you intended to use the sleeves for more than one growing season it may be advisable to allow a small excess of sleeve protruding from...

Страница 14: ...fidently trim to 15mm no spacer should be required otherwise a spacer must be used to ensure precise placement of the outer measurement point 5mm below cambium WARNING When preparing the bark surface...

Страница 15: ...re the foam tightly at the top of the stem A bead of Blu tac or plasticine can be used as a boundary layer The final installation should then be covered with aluminium foil to reflect radiant energy S...

Страница 16: ...ue Select Continuous Heating mode Select prefered logging interval For long term measurements every 1 minute to 5 mins is adequate For dynamic experiements such as cut stem every 1 second or 10 second...

Страница 17: ...ng setting A dT Asymmetrical temperature of at least 1 C is required to achieve sufficient sensivity of measurement however increasing the temperature above 1 C does not significantly improve sensitiv...

Страница 18: ...acity of the MicroSD card is 4GB The HFD8 is configured to record the temperatures of all needles Upper Lower and Side needles as well as automatically calculated Symmetrical and Asymmetrical values A...

Страница 19: ...to the instrument 9 2 3 Data File Format The HFD8 stores data in CSV format on the internal MicroSD card The file structure of the HFD8 whether it uses a comma or a point for the separator and a point...

Страница 20: ...hanges to the original CSV file 9 2 4 Download MicroSD Card via USB Adaptor The HFD8 data can be downloaded by removing the MicroSD card and putting it in a USB Adaptor supplied by ICT or available fr...

Страница 21: ...If a USB cable is used between the device and the PC then the speed is much slower NOTE 2 The ability to remove the MicroSD card from the instrument means data can be manually downloaded from the ins...

Страница 22: ...Click on the Select Channel choose the channels or add all and click ok...

Страница 23: ...display the graph Clicking plot size icon can enlarge the graphical display by turning off the tabular display Using the filter menu provides the facility to select and display only portions of the d...

Страница 24: ...alyse Data Whilst raw temperature data can be displayed in the HFD software all data must be imported into SFT Sap Flow Tool Software for post processing and analysis of sap flux density and Sap Flow...