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Measuring Water Levels, Temperature and Conductivity
- Remember to calibrate the probe before each measurement session. (See Calibration Section.)
- Turn the probe on and lower into water. A tone and light indicate that water has been reached and the depth can be read off the tape and recorded. The LCD screen is blacked out for about one second as the probe enters water. A weaker tone sounds as the probe is removed from water. Lower and raise the probe slowly a few times to verify the depth.
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Notes:
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- The water level sensor has a slight delay (~1 sec.).
- Measure static water level on entry into water only (i.e. not on removal) and wait 1 second before repeat measurements.
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- Once in water, the screen displays specific conductance and temperature of the water at the zero point. Lower the probe to the desired depth. Record the depth and the associated conductivity and temperature readings when stabilized. Typically 10 seconds/°C of temperature change are required for stabilization.
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, click the ON button to display temperature and conductivity readings.
- Repeat at each desired depth allowing 10 seconds/°C temperature change for stabilization.
- After each use remove the probe shroud and clean the probe sensors with a cloth or paper towel, then rinse thoroughly with de-ionized water (see cleaning section for more details).
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The LCD Display Menu
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Cleaning
- Pull the plastic shroud straight off the probe. (Do not twist)
- Clean probe and sensors with a cloth or paper towel.
- To remove hard deposits or stains on the probe and sensors, use either pure white vineger (acetic acid) or CLR diluted by 50%. Try a 30 minute soak followed by gently rubbing with Q-tip, cloth or paper towel.
- Rinse thoroughly with de-ionized water
- If about to calibrate rather than storing the TLC, rinse in the calibration solution you are using according to the instructions below.
- Replace the shroud by rotating it until it seats, then push to lock in place.
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