ENGLISH
23
Wait 5/10 minutes, press ◄►until
0.00
is displayed, press O K / M E N U .
Another
simple
method for ZERO calibration is to perform the instrument’s electronic Zero as follows:
DISCONNECT THE SENSOR,
short-
circuit the M-0 pins of the internal terminal board, press and hold
▲ ▼
until
0.00
is displayed then confirm
►
O K / M E N U
.
The operator must STRICTLY be an expert:
NOTE:
this method assures calibration of the instrument's
electronic ZERO
, this might not be equivalent to the real value of the water without
chlorine, i.e. the chemical physical Zero of chlorine-free water.
For this operation
DISCONNCT THE SENSOR !!!!
Press and hold
▲ ▼
until
0.00
is displayed then confirm
►
O
O K / M E N U
U
Another way to calibrate Zero, in the case of Open cells, is to use activated carbon filters.
�
Install a by-pass system before the sensor support and run the water at constant flow rate between 40/50 L / h
through an Activated Carbon cartridge. Press and hold
▲ ▼
until
0
0 . 0 0
0
is displayed then confirm
►
O
O K / M E N U
U
NOTE
: Activated Carbon tends to reduce the pH reading thus making calibration redundant, it may only be used for one operation and does not
guarantee the actual Zero. This is the least recommended method due to its complexity.
GO TO THE SECOND CALIBRATION POINT
Note:
if the Total Chlorine range has been selected, DPD3 will be displayed.
Select the value of the required sample solution and check with the test kit
DPD1
for free chlorine or
DPD3
for total chlorine, or with portable
instrument, measure the chlorine concentration in ppm (residual or total) in water, wait for the measurement to stabilise and match the DPD value
obtained.
Press
O
O K / M E N U
U
to confirm the selection
Press
E S C
to go back to the M E N U S E L E C T I O N
U
Press E S C
E S C
to go back to the M E A S U R E M E N T D I S P L A Y
A
For CALIBRATION and MAINTENANCE, ALWAYS refer to the manual of the relevant probe
START/STOP TIMES > BASIC MENU
Timer in real time
programs the days and exact time of instrument operations.
Program the date and time by selecting the backlit steps.
Press E S C
to go back to
M E N U S E L E C T I O N
or press E S C
E S C to go back to
M E A S U R E M E N T D I S P L A Y
A
MEASUREMENT
Zero
0 Cl ppm
420.1 mV
MEASUREMENT
DPD1 Calibrat.
0.000 Cl ppm
42.1 mV
MEASUREMENT
DPD1 Calibrat.
0.00 Cl ppm
42.1 mV
MEASUREMENT
DPD1 Calibrat.
0.00 Cl
p p m * ( T ot )
420.1 mV
MEASUREMENT
DPD1 Calibrat.
CLC 0.00 C l p p m
420.1 mV
Menu Selection
Start/S top times
Start/Stop times
Monday
00:00
◄
–
►
24:00
�
BASIC MENU
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Start/Stop times
Tuesday
00:00
◄
–
►
24:00
�
BASIC MENU
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