Xylem wtw MIQ/IDS, Руководство по эксплуатации

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pH MIQ/IDS
16
ba77277d01 01/2024
Why calibrate?
During the operation of a pH sensor, the slope and asymmetry of the sensor
change with time. The calibration procedure determines the current slope and
asymmetry of the sensor.
When to calibrate?
Calibrate before measuring and at regular intervals (depending on the
application).
Calibration
procedures
The CAL TEC AUTO calibration procedure enables a fully automatic calibration
with Technical buffer solutions.
Technical buffer solutions, see chapter 4.5
A
CCESSORIES
.
The CAL CON 2P calibration procedure enables the conventional 2-point
calibration with two different buffers.
The calibration procedure CAL CON 1P enables the conventional single-point
calibration with any one buffer.
4.2.2 Calibration procedure on the IQ S
ENSOR
N
ET
Before starting, make sure that the correct calibration procedure is
set (see section 4.3 S
ETTINGS
).
Prepare the calibration standards.
Step 1:
The sensor is in the sample.
The procedure is started from the measured value display with
<C>
(see IQ S
ENSOR
N
ET
system operating manual).
During calibration, the sensor is in maintenance condition.
All linked outputs remain in their current status.
When operating the sensor in a flow through armature:
Remove the sensor from the flow armature.
Step 2:
Calibration:
Follow the instructions on the display.
For details on the selected calibration procedure, see:

section 4.2.3 C
ALIBRATING WITH
CAL TEC AUTO

section 4.2.4 C
ALIBRATING WITH
CAL CON 2P

section 4.2.5 C
ALIBRATING WITH
CAL CON 1P
Once the calibration routine is complete, the display returns to the
measured value display.
The measured value flashes. The sensor is still in maintenance
condition.