eutech-instruments waterproof cyberscan con 400410 & tds 400 conductivitytds meter Benutzerhandbuch
Instruction Manual
CON 400/410
- 33 -
7.5.4
P4.4 Setting the TDS factor
For CON 410 meter only
The concentration of salts dissolved in solution increases the conductivity of that solution. This
relationship varies from salt to salt and is roughly linear over a given range for a given salt.
The TDS conversion factor is the number used by the meter to convert from conductivity to
TDS.
To determine the conductivity to TDS conversion
factor for your solution:
Addendum 2 on page 46 explains the calculation in
determining the conductivity to TDS conversion factor.
You can set the TDS conversion factor between 0.40 and
1.00; meter default is 0.50.
From measurement mode
1. Press
SETUP key to enter Set Up mode.
2. Press
the
MI/
S or MR/T keys to scroll through
subgroups until you view parameter P4.0.
3. Press
the
ENTER key five times to select parameter
4.4. The upper display shows “tdS” and the lower
display shows “P4.4”.
4. Press
the
ENTER key again. The upper display
shows a value and the lower display shows “tdS”.
5.
Calculate the TDS factor of your solution. See
Addendum 2 on page 46 for information on how to
calculate the TDS factor.
6. Press
the
MI/
S or MR/T keys to select your
calculated TDS conversion factor.
7. Press
the
ENTER key to confirm selection and to
return to the subgroup menu. Press the CAL/MEAS
key to return to measurement mode.
Figure 29 - Change of TDS factor