YSI IQ SensorNet ViSolid Sensor 700 IQ - Manual (Page 34)

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Measuring ViSolid
®
700 IQ (SW)
Determining the
Correction factor
Setting the Correction
factor
1 Bring the sensor into the measuring position.
2 In the setting table of the TSS sensor, note down the currently
set Correction factor as the value for F
A
.
3 Switch to the measured value display with <M>.
4 When the measured value is stable, read the TSS value, con-
vert it into the unit (mg/l) if necessary,
and note it down as the value for Sv.
5 Take a sample as close to the same time as the TSS measure-
ment as possible and as close to the sensor as possible.
6 Determine the level of total suspended solids of the sample
according to a reference procedure (e. g. gravimetric accord-
ing DIN 38414), convert it into the unit (mg/l) if necessary,
and note it down as the value for S
R
.
7 Calculate the Correction factor.
F
N
= F
A
* S
R
/S
V
8 Set the new Correction factor in the Calibration data menu (see
section 3.5.3).
The Correction factor setting affects each TSS measuring
mode and all calibration data. Also, if there is a change of
the measuring mode or calibration data, the Correction fac-
tor
is retained. Therefore, after every change of the set-
tings in the Calibration data menu, check the Correction
factor
.