The AIM1 Automatic Infiltration Meter is a stand-alone logging instrument for the measurement of infiltration rates with the tension infiltrometer.
The AIM1 Automatic Infiltration Meter is a convenient solution for infiltration measurements that saves researchers time. The AIM relieves researchers of the need to manually monitor their Infiltrometer with a stop-watch and notepad.
The AIM1 automatically collects infiltration data from a Tension Infiltrometer. Converted and unconverted data is stored within the AIM and can be downloaded as a csv file for further data manipulation and analysis. The AIM can support up to two Tension Infiltrometers or your own Infiltrometer/Permeameter with installation advice from ICT International.
The AIM1 is a fully self-contained unit with 4GB data logging capacity and an internal battery that will last several days’ field work. The battery is easily recharged with a 24V power supply (CH24). Communication is via a USB port or wireless connectivity. The AIM is IP-65 rated and has a Windows and Mac compatible Graphical User Interface.
Logging:
Power management:
Infiltrometer Specifications |
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20cm Model | 8cm Model | |
Specifications | US Patent No. 4884436 | US Patent No. 4884436 |
Diameter Disk | 20cm | 8cm |
Inside Diameter Water Reservoir | 5.1cm | 2.54cm |
Inside Diameter Bubbling Tower | 2.54cm | 2.54cm |
Length Water Reservoir | 81cm | 81cm |
Bubbling Pressure Membrane | 30cm H2O | 30cm H2O |
Carrying Case Dimensions (optional) | 28cm x 36cm x 107cm | 28cm x 36cm x107cm |
Pressure Transducer | 1 psi (67cm H2O) | 1 psi (67cm H2O) |
Instrument Logging |
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Analogue Channels | 5 differential |
Resolution | 0.00001V—24-Bit |
Accuracy | 0.001V |
Minimum Logging Interval | 1 second |
Delayed Start | Suspend Logging, Customised Intervals |
Sampling Frequency | 10Hz |
Communications | USB, Wireless Radio Frequency 2.4 GHz |
Data Storage | MicroSD Card, SD, SDHC & SDXC Compatible (FAT32 format) |
Software Compatibility | Windows 8, 8.1 & 10. Mac OS X. |
Data Compatibility | FAT32 compatible for direct exchange of SD card with any Windows PC |
Data File Format | Comma Separated Values (CSV) for compatibility with all software programs |
Memory Capacity | Up to 16GB, 4GB MicroSD card included. |
Temperature Range | -40°C to +80°C |
R/H Range | 0-100% |
Upgradeable | User Upgradeable firmware using USB boot strap loader function |
POWER |
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Internal Battery Specifications | |||
960mAh Lithium Polymer, 4.20 Volts fully charged | |||
External Power Requirements | |||
Bus Power | 8-30 Volts DC, non-polarised, current draw is 190mA maximum at 17 volts per logger | ||
USB Power | 5 Volts DC | ||
Internal Charge Rate | |||
Bus Power | 60mA – 200mA Variable internal charge rate, maximum charge rate of 200mA active when the external voltage rises above 16 Volts DC | ||
USB Power | 100mA fixed charge rate | ||
Internal Power Management | |||
Fully Charged Battery | 4.20 Volts | ||
Low Power Mode | 3.60 Volts – Instrument ceases to take measurements | ||
Discharged Battery | 2.90 Volts – Instrument automatically switches off at and below this voltage when no external power connected. | ||
Battery Life varies | |||
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Logsdon, S.D. and Jaynes, D.B. 1993, ‘Methodology for Determining Hydraulic Conductivity with Tension Infiltrometers‘, Soil Science Society of America Journal, vol. 57, pp. 1426-1431.
Perroux, K.M. and White, I. 1988, ‘Designs for Disc Permeameters‘, Soil Science Society of America Journal, vol. 52, pp. 1205-1215.
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Ramos, T.B., Gonçalves, M.C., Martins, J.C., van Genuchten, M.Th. and Pires, F.P. 2006, ‘Estimation of Soil Hydraulic Properties from Numerical Inversion of Tension Disk Infiltrometer Data‘, Vadose Zone Journal, vol. 5, pp. 684-696.
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