Hach SL250 Manuel D'utilisation Simplifié page 14

Figure 8 Probe connections
7.5 Complete probe measurements
Do the procedure that follows to complete a measurement with probe(s). Refer to
Chemkey measurements can be completed at the same time. Refer to
measurements on page 12.
1. Calibrate the probes before initial use. Refer to
Note: For the best accuracy, calibrate the probes daily.
2. Set the date and time in the meter before the probe is attached. Refer to
time on page 10.
The probe must have the correct service-life time stamp.
3. If complete traceability is necessary, enter a site ID and operator ID before measurement. Refer
to Use an operator ID
4. Remove the probe connector port caps and attach the probe(s). Refer to
the probe connection.
Note: Do not discard the probe connector port caps. Install the probe connector port caps again when no probe
is connected.
5. Rinse the sample flasks with sample.
6. Fill the sample flask with sample so that the sensor is fully in the sample.
7. Put the probe(s) into the probe sample flasks and push Read if the measurement mode is set to
Press to Read. Refer to the probe documentation for more information.
8. The measurement values are shown on the display.
14 English
on page 11 and Use a site ID
Complete Chemkey
Calibrate the probe on page 15.
on page 11.
Figure 9. Multiple
Change the date and
Figure 8 on page 14 for