BSV BSsalt-10, Руководство пользователя, Страница: 91 / 142

Manual EVO v.3
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There are air bubbles in the
measuring zone of the sensor
Bleed the sensor holders and ensure
that there is no air remaining in the
measuring zone.
Sensor passivated for
working at more than 3 mg/l Clean the sensor by submerging it in
an HC10.1M solution for 20 seconds.
The pH of the water is higher
than at the time of calibration Calibrate the sensor to the new pH
value.
The pH is above 9, and
therefore outside the
recommended reading zone,
Adjust the pH within the acceptable pH
range: 6.5-9
Reading above the
DPD-1
The sensor has been
calibrated without waiting for
sufficient conditioning time
Repeat conditioning of the sensor and
recalibrate.
DP-! Reactives are worn
Repeat the DPD-1 measurement with
new reactives
DPD-1 measurement is
incorrect owing to a sample
of water with high salinity Increase the waiting time in the
reaction of the DPD measurement
reactives.
Failure in sealing of the
sensor
Check sealing rings of the sensor
The pH of the water is lower
than at the time of calibration Calibrate the sensor at the new pH
value
The pH is lower than 6.5 and
therefore outside the Adjust the pH to within the acceptable
pH margin