User manual

40
B Reference information
before adjusting the cell constant (see section B.2.2).
1 Prepare a calibration solution of 1.00 M NaCl, 58.44 g/l. Let
the solution stand until it is at room temperature. This is
important for exact measurements.
2 Fill the flow cell completely with the calibration solution by
pumping at least 15 ml through the cell with a syringe.
3 Stop the flow and wait 15 minutes until the temperature is
constant in the range 20–30 °C.
4 Read the conductivity value displayed and compare it with the
theoretical value from the graph below at the temperature of
the calibration solution. If the displayed value and the
theoretical value correspond, no further action is required.
If the values differ, proceed with actions 5-8
5 Select sub menu
Setup Cond and
press OK.
6 Select sub menu
Setup Adjust
Cond
and press
OK. The current
conductivity
value is shown.
7 A warning
message is
shown until
confirmed by
pressing
OK.
8 The current
value is
displayed as
default. Enter
the theoretical
conductivity
value according
to the graph
and press
OK.
The new cell
constant is
automatically
calculated. The
range is 1.000-
999.9 mS/cm.
Setup Adjust Cond
(83.53mS/cm) 86.6
Warning! This will
change cell calib
Setup Adjust Cond
(1.000mS/cm)
20 25 30
77
80
85
90
95
97
Setup
Temp Cond pH UV
Monitor UPC-900
User Manual 18-1125-55 Edition AE
Temperature (°C)
Conductivity (mS/cm)
Conductivity of 1.00 M NaCl at 20–30 °C