15
Notes: If the meter displays the top of the range blinking, the reading is out of range.
If the stability indicator “ ” blinks, the reading is unstable.
Make sure the meter is calibrated before taking measurements.
If measurements are taken successively in different samples, for accurate readings it is recommend-
ed to rinse the probe thoroughly with deionized water before immersing it into the samples.
TDS reading is obtained by multiplying the EC reading by the TDS factor, which has a default
value of 0.50. It is possible to change the TDS factor in the 0.40 to 1.00 range by entering
SETUP mode.
a
0
= 0.008
b
0
=0.0005
a
1
= -0.1692
b
1
= -0.0056
a
2
= 25.3851
b
2
= -0.0066
a
3
= 14.0941
b
3
= -0.0375
a
4
= -7.0261
b
4
= 0.0636
a
5
= 2.7081
b
5
= -0.0144
c
0
= 0.008
c
1
= 0.0005
X = 400R
T
Y = 100R
T
f (T)= (T-15)/[1+0.0162(T-15)]
Notes: The formula can be applied for salinity values between 0 and 42 PSU.
The formula can be applied for temperatures between -2
°
C and 35
°
C.
To reach this range press
Mode
while in Salinity range until the practical salinity scale [PSU] is
displayed.
OPERA
TIONAL GUIDE
R
T
- coefficient;
C
T
(sample) - uncompensated conductivity at T °C;
C(35,15)= 42.914
mS/cm - the corresponding conductivity of KCl solution
containing a mass of 32.4356 g KCl /1 Kg solution;
r
T
- temperature compensation polynom
