Water Level Temperature Meter Instructions
High Quality Groundwater and Surface Water Monitoring Instrumentation
(Page 1 of 2)
Model 201
Operating Principles
The Solinst Model 201 Water Level Temperature (WLT) Meter
measures water level and temperature. Temperature readings are
displayed on the LCD screen and water level is read from the tape as
with a conventional Water Level Meter. When the probe is immersed in
a conductive fluid, a circuit is completed and the water level is indicated
by a tone and light.
Equipment Check
Upon receipt of your Solinst Model 201 Water Level Temperature
Meter, and always before heading out to the field, the following checks
are recommended:
1. Press the button to turn the meter on. The display should briefly
show the firmware version of the meter (e.g. WLTM 1.0), then the
air temperature (e.g. 21.12 C). If the battery is low, a ‘LOW BATT’
warning appears and the 9 volt alkaline battery should be replaced.
If “No Comm” appears, check the probe connection (call Solinst if
message persists). If the display is blank, install a new 9V battery.
2. Ensure the probe tip is clean.
3. Submerse the probe in tap water. This completes the circuit and
activates the buzzer and light.
Tape Guide
Brake
Probe Holder
Front View
Back View
LCD Display
Indicator
Light
Battery
Drawer
Handle
Sonalert
(Buzzer)
Button
1. Turn the meter on and lower the probe into water. A tone and light
indicate that water has been reached and the depth can be read
off the tape and recorded. Lower and raise the probe slowly a few
times to verify the depth.
2. Once in water, the screen displays temperature of the water at the
zero point. Lower the probe to the desired depth. Record the depth
and the associated temperature reading when stabilized.
Taking Water Level & Temperature Measurements
Notes:
1. The zero measurement point of the Water Level Temperature Meter
is located near the tip of the probe.
2. If the display indicates ‘LOW BATT’ there is still some life left in the
battery, but it is recommended that you change the batteries as soon
as possible.
3. To turn the buzzer off while you are obtaining a temperature
profile, press the button 2 times quickly. “WL-off” will display
above the temperature reading on the LCD. To turn the buzzer
back on, press the button 2 times quickly.
4. To conserve battery power, the display has an auto off after
8 minutes of use. If the display is blank when you wish to take
a measurement, press the button to display temperature reading.
5. Repeat at each desired depth.
6. After each use clean the sensor pin with a soft cloth and rinse with
deionized water.
7. To turn the Water Level Temperature Meter off, press and hold the
button for about 2 seconds.
Tape Guide Instructions
1. Fit the Tape Guide over the top of the well, small end in.
2. Insert the leg of the Water Level Temperature Meter into the hole
on the Tape Guide and rest the Water Level Temperature Meter on
the side of the well casing (small reels only, see diagram).
3. Take all measurements at the ‘V’ notch on the Tape Guide, and
adjust readings according to the offset stamped on the Tape Guide
(i.e. subtract 6 cm or 2/10 ft).
4. When finished, store the Tape Guide by clipping it onto the support
bracket on the back of the Water Level Temperature Meter.
Solinst Canada Ltd.
www
.solinst.com
Tel:
+1(905) 873-2255
(800) 661-2023
Tape Guide:
prevents tape
from scratching the top edge
of well casing
Water Level
Temperature Meter:
anchored to the well casing with the
tape guide for stable operation. Small
reels only. Medium and large reels
should be placed on the ground.
High quality PVDF flat tape:
hangs straight in the well for
accurate interface
measurements
Note:
Temperature readings are most accurate when the entire probe
is submersed.
Zero Point
