ProMinent DULCOMETER Assembly And Operating Instructions Manual page 10

Introduction
Measured variable: TDS value
Symbol displayed in the controller's dis‐
[TDS] (total dissolved solids)
play:
Unit of measurement: ppm (mg/l)
Physical variable: Total of all inorganic
and organic substances dissolved in a sol‐
vent
Display range: 0 .... 2000 ppm
Temperature range: 0 ... 35 °C
[TLIMIT↑] : ≤ 40 °C
Setting the TDS value displayed: You can
set a multiplicative factor
[INPUT] menu, with which the TDS value
displayed can be changed.
Displayed TDS value
[uS/cm] * TDS factor
Setting range of TDS factor: 0.400 ...
1.000 (Default: 0.640)
Temperature compensation is always
linear on the TDS display with a reference
temperature of 25 °C.
10
[TDS] in the
[ppm] = К (25 °C)
Measured variable: Salinity (SAL)
Symbol displayed in the controller's dis‐
[SAL] units: ‰ (g/kg)
play:
Physical variable: Mass of salts in one kg
of water given in PSU (practical salinity
units).
The salinity is derived from the conduc‐
tivity measured, with a specified non-
linear temperature compensation and a
reference conductivity (KCL).
Display range: 0 .... 70.0 ‰
Temperature range: 0 ... 35 °C
[TLIMIT↑] : ≤ 35 °C
[SAL] is calculated based on
The salinity
the
[Practical Salinity Scale 1978 (PSS-78)]