905-628-4999
www.heroninstruments.com
32
Cleaning and Maintenance
Overview
What to Expect From Your dipperLog Groundwater Data Logger
As with any groundwater or surface water monitoring project, you should determine the best
instrument to use, and how to maintain that instrument, based on the monitoring environment specific
to your application. When using dipperLogs, ensure the monitoring temperatures are within the
logger’s specifications. Make sure that the wetted materials of your dipperLog are compatible with the
site’s chemistry, and determine the proper deployment method for the job. A maintenance schedule
and precautionary measures should be implemented, especially if exposing your dipperLogs to
environments you expect to be harsh on instrument sensors.
Selecting the Proper dipperLog
Heron dipperLogs are available in a variety of pressure ranges, from:
(B) 10m/30ft
(C) 30m/100ft
(D) 60m/200ft
(E) 120m/400ft
The dipperLog can withstand 2x overpressure, however outside the stated pressure range, accuracy
cannot be guaranteed. This can also damage the sensor.
A temperature detector is used to accurately compensate for temperature changes, within the range
of 0°C to 50°C for the dipperLog line. Your dipperLog will record pressure and temperature in its
thermal range of -20°C to 80°C, however, outside the compensation range, readings will be less
accurate. Using beyond the thermal range may cause damage to the logger.
dipperLog specification sheets contain a list of wetted materials to help check for chemical
compatibility with the monitored water. Prior to deploying your dipperLog, you can check the chemical
compatibility of the wetted materials by obtaining a sample of the water you will be monitoring in, and
measuring the chemicals of concern for your site. This can be done by attaching a bailer to a dipper-
Tag multipurpose tag line, and retrieving your sample.
Placing your dipperLog in the sampled water for a closely monitored test period, although actual
expected pressure and temperature conditions may not be emulated, it will give you a good idea of
how your dipperLog will react/perform in the chemical environment of that site. This test can be used
for all of our products, including: water level meters, inspection cameras, oil/water interface meters
and data loggers.
