USING THE SOFTWARE
1. Connect the modem cable to the SediMeter and
the computer.
2. Start SediMeter.exe ver 4.
3. Select the COM port of the modem cable in the
Serial Port selector.
4. The Baud Rate after reset shall be 9600.
5. Click Open Connection. If successful the other
tabs will become unlocked.
DEPLOYMENT
1. Go to the Timing tab and set Interval and Start
time. Optionally set burst samples to more than one.
2. Optionally go to the Cleaning tab and set that.
3. Go to the Mode tab and set it to Logger mode.
4. Disconnect the instrument from the cable, plug in
the blind plug, and deploy.
DOWNLOADING DATA
Connect as above, go to the Mode tab and set the unit
to Sleep mode. It will fail if the command by chance is
sent during an ongoing measurement. If so, try again.
1. Open the Download tab.
2. Click the CHECK button. The number of
measurements in memory is shown.
3. Click the folder button. In
the dialog that opens, select a
file name and location for the
file you are about to create.
4. To download only the new
records, click Get New. To
download all records, click Get
All. To discard the new records
without downloading them,
click Discard.
5. After all the requested data
has been downloaded and
saved to a file you get a
confirmation. Click OK. The
data remains in memory until
you close the application.
6. To clear the SediMeter’s
memory, click Erase. It will
take about a minute.
7. Select menu Data ->
Analyze Logged… to open the
SediMeter Data window.
Refer to the software manual
for further details.
DESCRIPTION
The sensor consists of an array of 36 optical
backscatter (OBS) detectors, 1 cm apart. The turbidity
is measured at each of these 36 levels, and also in
between by measuring oblique backscatter (emitted at
one level and measured at the adjacent level). Using
the straight backscatter the instrument estimated the
bottom level. There is also a 37th OBS, 11 cm above
#36. This is used for measuring turbidity, and, in
SM3B, for controlling the ascent of the cleaning
shuttle.
The instrument can take up to 20 measurements of
level and #37 turbidity per measurement, with an
interval of 1 to 16 s. These burst samples can be used
to get a better average over a period with varying
measurement values, e.g. over a wave cycle. Finally
the instrument measures the temperature.
LEGAL DISCLAIMER
No part of the hardware, firmware, or software may
be reverse engineered or otherwise investigated or
divulged. All rights reserved.
© Lindorm, Inc., 2006 - 2018
RESET
To reset, approach the supplied magnet to the side of
the printed circuit board where the text RESET CPU
appears on the reverse side. The contents of the
memory is not affected by a reset
BATTERY
The battery takes a few hours for a full charge. When
the voltage drops well below half, the cleanings and
the measurements are shut off. If the battery keeps
discharging, the power is eventually cut to the
electronics. When charging the instrument from a
deep discharge it may be necessary to keep the CPU
in the reset condition (using the magnet) until the
voltage has risen sufficiently.
The battery can be replaced by authorized service
personnel. It is also possible to install a primary
battery instead of, or in addition to, the rechargeable
battery. Contact Lindorm for details.
CLEANING
Clean the sensor with non-abrading sponges, water
and mild detergent only.
