UGT IL-2700, Manual

Page 1: ...Manual Hood Infiltrometer IL 2700...

Page 2: ...Preparation of the Hood Infiltrometer 12 6 2 Setting up the Hood Infiltrometer 12 6 3 Filling the hood 13 6 4 Choosing the effective water tension 13 6 5 Measuring the infiltration rate 14 6 6 Bubble...

Page 3: ...ction free manner The effective increase in pressure on the soil surface can be freely selected between zero and a vacuum up to the bubble point of the soil There are several ways to contact UGT if yo...

Page 4: ...le for manual level recording 1 and pressure sensor for electronic level recording Handheld instrument IL 2700 1 Read out software IL 2700 1 U tube manometer with field tripod 1 Infiltration hoods 2 R...

Page 5: ...c conductivity L T ku Hydraulic conductivity L T LDP Bubblepoint L Q Steady state flow V T q Ratio of two source areas rs Effective radius of the infiltration area L T Submersion depth of the air inta...

Page 6: ...a negative pressure up to the bubble point air permeation value of the soil That pressure head is measured precisely by means of a supplemental U tube manome ter An additional soil tensiometer measure...

Page 7: ...solution for a large number of two and three dimensional flow processes It is the regular basis for the interpretation of test results with the infiltrome ter systems common so far According to WOODIN...

Page 8: ...r neighboring values of the chosen water tensions h1 h2 applies according to equations 1 2 4 1 1 2 1 a e k a Q h f 3 4 1 2 2 2 a e k a Q h f 4 By way of division we get ln 2 1 2 1 h h Q Q h1 h2 0 5 An...

Page 9: ...low rate When choosing the source areas with a ration of 10 we get 1 2 F q F 2 a F 10 1 1 4 2 1 1 2 1 Q Q q a Q Q q 11 Now ku and can be determined for an unknown soil using 11 8 and 1 As different so...

Page 10: ...effective only if the pressure in the water volume under the hood is negative The negative pressure can be adjusted freely from zero up to the bubble point air permeation point The soil pore system o...

Page 11: ...needs to be supported additionally ring with bearing Fig 2 Schematic setup of the Hood Infiltrometer 1 Fine sand sealing 2 Plastic hood 3 Buffer vessel 4 Standpipe 5 Infiltration reservoir 6 Bubble To...

Page 12: ...cess at the handheld device needs to be started before filling the infiltration reservoir See more information on this at chapter 8 6 Calibration Connect the hood to the infiltration reservoir with th...

Page 13: ...eep it closed Slowly open the aeration valve V2 Thereby the space under the hood is set to a negative pressure and the water flows over the overflow chamber Now the filling of the hood started Shut V2...

Page 14: ...IL 2700 Chapter 8 Each test has to be run up to a steady state infiltration rate Depending on the type of soil involved infiltration to mid column will be required Following each test run increase the...

Page 15: ...ereby the efficient macropores are not distorted or clogged From the bubble point the measurement needs to be made with the tension infiltrometer The fine sand of the contact layer needs to be chosen...

Page 16: ...es with rs radius of infiltration reservoir t Z r a Q S B 2 2 15 t Z q t Z a r a Q S B 2 2 2 16 Factor q is the ratio of the cross sectional area of the infiltration reservoir and the respective infil...

Page 17: ...hnical Data The UGT micrologger IL 2700 has two interfaces Input IN for the sensor data cable socket at the left side and Output RS 232 for the PC data cable socket at the right side see Fig 5 Sensor...

Page 18: ...sed in terms of Escape Hence the Start button always leads to the next lower menu section and the On buttonback to the next higher menu section The operation of the Step button relates to the down arr...

Page 19: ...al and afterwards the tension is set up Subsequently the measurement itself begins For each measurement a maximum of 100 values can be recorded But after reaching a steady flow rate only the preset nu...

Page 20: ...ation reservoir still open against atmosphere 9 7 Configuring the measurement interval Starting a measurement The measurement interval is defined before every measurement To get to this point proceed...

Page 21: ...with the Start button Now the set tension can be entered using the Step button Here the Start button starts the actual measure ment 9 8 Options menu Besides the configuration and calibration menu als...

Page 22: ...Umwelt Ger te Technik GmbH Eberswalder Str 58 D 15374 M ncheberg Tel 49 0 33 43 2 89 575 www ugt online de Page 22 of 32...

Page 23: ...Umwelt Ger te Technik GmbH Eberswalder Str 58 D 15374 M ncheberg Tel 49 0 33 43 2 89 575 www ugt online de Page 23 of 32...

Page 24: ...Umwelt Ger te Technik GmbH Eberswalder Str 58 D 15374 M ncheberg Tel 49 0 33 43 2 89 575 www ugt online de Page 24 of 32...

Page 25: ...Umwelt Ger te Technik GmbH Eberswalder Str 58 D 15374 M ncheberg Tel 49 0 33 43 2 89 575 www ugt online de Page 25 of 32...

Page 26: ...Umwelt Ger te Technik GmbH Eberswalder Str 58 D 15374 M ncheberg Tel 49 0 33 43 2 89 575 www ugt online de Page 26 of 32...

Page 27: ...IL2700 GUI Using this data can be read out and subsequently deleted as needed The diagrams of the absolute pressure as well as the pressure difference enable an instant validation of the values and he...

Page 28: ...elow The display title Ser Com shows that the device is in communication mode and waiting for the software IL2700 GUI to respond Starting the software automatically establishes a connection confirmed...

Page 29: ...adout data button They are saved at the program folder and named IL2700_YYYY MM DD_hh mm ss according to the readout time These data can be imported into standard spreadsheet or word processing progra...

Page 30: ...s possible to show former datasets at the graphics window of the software Thus allows an easy comparison of the data Selecting a specific area with the mouse enlarges areas of interests Clicking on th...

Page 31: ...te the data memory by pressing ON and START To fill the hood insert the air intake pipe into the bubble tower Set the depth of sub mergence ca 2 cm higher than the chamber height Hk Until aeration i e...

Page 32: ...lic Properties Phd thesis University of Sydney PERROUX K M I WHITE 1988 Designs for disc permeameters IN Soil Sci Soc Am J 52 1205 1215 REYNOLDS W D M TH VAN GENUCHTEN M M GRIBB J W HOPMANNS 1998 Dete...