Abstract
An instrument is described which was developed and has been used by the Field Drainage Experimental Unit (FDEU) over more than 15 years, to record watertable data from experimental field sites. The instrument is fairly complex in design and requires specialist workshop equipment for construction and maintenance. The advantage that it has over dipwells and piezometers is that it records the fluctuating watertable data on a revolving chart attached to a clock. By making certain adjustments, the device can be used to record over either a 0·75 m or 1·5 m range with ±20 mm and ±40 mm long-term accuracy respectively. Careful calibration and maintenance can reduce these errors to practically zero although if this standard is to be maintained then the instrument needs to be check calibrated at least every 3 months.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
