Copyright, all rights reserved 4 Version 1 : 011107
Bluelab Combo Meter Bluelab Corporation Limited
3.0 Measuring Hydroponic Values
The values measured within hydroponics by the Combo meter include nutrient
(conductivity), temperature and pH levels.
1
2
Clean Probe
Cleaning of the measuring probes is described in Section 5.0 of this document.
3.1 Measure Nutrient/Conductivity
Obtain Conductivity Value
Insert white nutrient/temperature probe into solution
where there is strong movement of the solution, or stir
the solution with the probe. Press NUTRIENT button
once with a short press. Wait 1-2 minutes for probe to
reach solution temperature and then read the nutrient
conductivity value.
NOTE: The nutrient/temperature probe is cleaned at
least once a month to ensure accurate readings. If oily
additives are being used the probe is cleaned after
each use.
1
Obtain Temperature Value
Insert white nutrient/temperature probe into solution and press TEMP button once with
a short press. Wait 1-2 minutes for probe to reach solution temperature and then read
temperature value.
NOTE: For a change to very cold or very hot temperatures it will take 4-5 minutes for
probe to reach solution temperature. To help decrease time taken to reach the solution
temperature, place probe in an area where there is strong movement of solution, or stir
solution with the probe.
3.3 Measure pH Value
2
Store Probe
Store pH probe tip in a container of fresh water between uses or replace storage cap
with a small amount of water in it. The pH probe is never stored in de-ionized or distilled
water as this will permanently damage it.
Figure 4. Nutrient Conductivity
Solution
Button
3.2 Measure Temperature
1
Obtain pH Value
Place 2 to 3cm of pH probe tip into solution and press pH button once with a short press.
Wait 1-2 minutes for value to stabilize and then read pH value.
NOTE: If taking readings of more than one solution, rinse the probe thoroughly in fresh
water between solutions to avoid cross contamination.
To decrease time taken to reach the solution temperature, place probe in an area where
there is strong movement of solution, or stir solution with the probe.
To Next Page
Loading...
Need help?
General
