horiba U-51, Инструкция по эксплуатации

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3 Basic Operation
32

Setting a total dissolved solid (TDS) coefficient
The total dissolved solid amount (TDS) is a converted value obtained by multiplying the
conductivity (COND) by a known coefficient.
Three kinds of mode, “AUTO”, EN27888” and “Input mode”, can be selected.

AUTO
TDS is calculated according to the coefficient initially set.
The coefficient initially set for the control unit is based on a conversion for KCl and CaCO
3
solutions and it depends on the conductivity (COND) value as shown below.

EN27888
TDS is calculated according to the European standard "DIN38404 (mix of most
common ions in natural water)”.
Note
This mode is not applicable to the conventional control unit and sensor probe.
To confirm the version, see "

Version" (page 35).

Input mode
TDS is calculated according to the entered coefficient.
1.
Press the control unit’s POWER key for about 1 second to turn the power ON.
The "MEASUREMENT" screen appears after about 10 seconds.
Note
The operation keys are designed to operate using the pad of a finger, sharp objects can tear the
control unit cover damaging the operation keys.
2. Press the right (  ) key to switch the display to the "SETTINGS" screen.
Conductivity (COND) (S/m)
Conversion
coefficient
< 0.05 0.65
0.05 to 0.5 0.64
0.5 to 1 0.63
1 to 3 0.62
3 to 5 0.61
> 5 0.60
Control unit Sensor probe
Not applicable
version
P2000266001D
P2000266001C
P2000266001B
P2000266001A
P2000266001-
P2000267001C
P2000267001B
P2000267001A
P2000267001-