Dipper-Log

The dipper-log is an economical, single channel data logger for long term monitoring of groundwater levels in wells, boreholes and open bodies of water. Its small size allows the dipper-log to be used in well diameters as small as 3/4 of an inch (20mm).The dipper-log is a durable & reliable ground water data logger. It is very easy to launch and even easier to download when used in conjunction with a bar-log barometric logger. No need to open separate files, the Heron designed software does it all for you. Because of the unique "grab" of the barometric pressure during set up of the dipper-log there is no requirement for elevation correction. Down in the valley or on top of a mountain it is spot on every time.

Some of the quality features engineered into these units include:

• The dipper-log's compact size allows it to be used in wells down to ¾ inch (20mm) diameter.
• The dipper-log uses an absolute (total pressure) system. The system does not require vented cable which is subject to condensation and freezing.
• The dipper-log automatically takes barometrically compensated readings for short term tests. For longer term applications use a Heron barometric logger (the bar-log) to measure and record atmospheric pressure.
• The dipper-log uses popular Windows based software to initiate a mission and to retrieve, calculate and tabulate the data. A graphics package is available.
• The dipper-log system is designed and manufactured by Heron Instruments to be accurate, easy to use and economical.

What the dipper-log does:

• Stores 16000 time/dated readings in engineering or metric units.
• Records reading intervals in seconds, minutes, hours or days.
• Calculates and tabulates water levels in feet or meters.
• Allows preset start time/date.
• Takes barometrically compensated real time readings.
• Automatically recalibrates itself at the start of each mission.
• Records depth below datum, job and well number.
• Allows you to set logger time/date.
• Stores all of the above information in the dipper-log.
• Synchronizes all reading on multi logger installations after the first unit reading. (i.e. min., hour, day)

The dipper-log is easy to use:
• The dipper-log will not allow you to proceed with "setup" if required information is not entered.
• Recalibrates itself during set up.
• Stores default values for some parameters. (i.e. last barometric pressure, last calibration value)
• Automatically takes a barometric reading during set up for use in real time readings.
• The dipper-log and bar-log files are automatically matched to give barometrically compensated results.
• Allows immediate or delayed start.
• Uses non volatile EEPROM memory. Data is not lost if battery fails or is removed.
• Simple to use Windows based software (for Win95, 98, ME, 2000 & XP) (graphics package available)
• Compact 5 inch (130mm) long x 0.72 inches (19mm) diameter logger unit.
• Convenient direct readings from the well head unit.
• Has an easy change camera style battery in the well head unit. The battery may be changed without removing the logger from the well. (Energizer EL 123 or equivalent)
• Accurate to 0.1% F.S (transducer)
• Slim 1/8 inch (3.1mm) flexible cable. Excess cable can be stored in the well.