Page 6 of 18
Operating Manual
www.geotechuk.com
LFWATOM01 Iss.12
© QED Environmental Systems Ltd.
A TE X
D I PM E TE R
Operating notes
To power on the dipmeter, press and release the ON/OFF button, the meter will beep briefly. It will remember
the last sensitivity setting when switched on.
To power off the meter, press and hold the ON/OFF button for 3 seconds. It will power off automatically if not
used within 5 minutes.
Sensitivity
If you are using the dipmeter in pure water, you may have to increase the sensitivity, to do this, press the +
button.
If you are using the dipmeter in cascading or saline water, you may have to decrease the sensitivity, to do this,
press the – button.
Reel Lock
To lock the reel, turn the plastic knob on the rear clockwise until locked.
Equipment Check
Test circuit and battery by pressing the ON button. Make sure the panel securing knobs are tight. If the
unit does not sound, replace the battery (one 9 volt Duracell battery MN1604) in the drawer on the
faceplate and repeat.
Test the tape and probe by shorting out the centre conductor and probe body on the stud on the back
axle of the unit. The buzzer and light should activate; if not, adjust the sensitivity and repeat. Make sure
the unit is on.
Test the unit in tap water before going out to the field. DO NOT use distilled or de-ionised water.
Use in the Field
Note: Ensure that the panel securing nuts are tight before use.
Reel the tape down the well carefully, avoiding the edge of the casing. Hang the unit on the casing, where
possible, and run the tape over the frame leg to avoid cuts and nicks.
When the unit sounds, carefully measure the depth to water from your reference point by slowly
lowering and raising the probe to the air/water interface. Raise the probe, shake off the water and repeat
the measurement. In wells with cascading water, reduce the sensitivity by pressing the (-) button to avoid
false signals.
The probe is rated to full depth and can be used to measure depth to the bottom of the well. Reel the
tape until the probe touches the bottom and the tape becomes slack. DO NOT let the probe fall under
gravity or it will be damaged when it hits the bottom of the well. DO NOT use the unit to measure sand
backfill as the tape and probe may get "locked" in the backfill.
Wind the tape back onto the reel, removing any excess moisture and dirt.
Note: Intermittent beep indicates unit ON. Beeping shuts off automatically 5 minutes after last use.
