Calibration Procedure - HACH LANGE sensION + DL Bedienungsanleitung

Change the settings
The settings for dissolved oxygen measurements can be changed when
a dissolved oxygen probe is used. Push
1. Push . The first setting is shown.
2. Quickly use the arrow keys to change the value. Wait for the next
setting to be shown and change any additional values:
Option Description
Atmospheric pressure in mbar (default: 1013 mbar)
SAL Salinity in g/L NaCl (default: 0 g/L)
Note: The salinity value can be found from a conductivity measurement. Refer
to Table 3 on page 18.
Setup for conductivity
The settings for conductivity measurements can be changed when a
conductivity probe is used. Push
1. Push . The first setting is shown.
2. Quickly use the arrow keys to change the value. Wait for the next
setting to be shown and change any additional values:
Option Description
CEL Electrode type: platinum (default) or titanium.
Note: This option is not available on all meters.
CAL The number of standards for conductivity calibration. Select one
standard (default). Select the standard nearest to the expected
measurement range.
tC Temperature compensation: 0 to 9.99%/°C (default: 2%/°C)
tr Reference temperature: 20 or 25 °C (default: 25 °C)
F TDS calculation factor: 0.01 to 4.44 (default: 0.64)
The new settings are automatically stored in the meter.
10 English
to view the current settings.
to view the current settings.
Calibration
W A R N I N G
Chemical exposure hazard. Obey laboratory safety procedures and wear all of
the personal protective equipment appropriate to the chemicals that are handled.
Refer to the current material safety data sheets (MSDS) for safety protocols.

Calibration procedure

This procedure is for general use with liquid calibration solutions. Refer
to the documents that are included with each probe for additional
information.
1. Pour the buffers or calibration solution into the labeled calibration
tubes.
2. Rinse the probe with deionized water and put the probe into the
appropriate calibration tube. Make sure that there are no air bubbles
under the probe tip.
3. Push . The parameter flashes.
4. Use the arrow keys to change the parameter, if applicable.
5. Push to select the parameter.
6. Push the arrow keys to select the appropriate standard solution. For
pH, the buffers are automatically recognized.
7. Push to measure the calibration solution.
Note: For pH, the next calibration solution is shown. For conductivity, use one
calibration point. Select the standard nearest to the expected measurement
range.
8. Rinse the probe with deionized water and put the probe into the
second calibration tube, if applicable. Make sure that there are no air
bubbles under the probe tip.
9. Push to measure the second calibration solution, if applicable.
The next calibration solution is shown.
10. Rinse the probe with deionized water and put the probe into the third
calibration tube. Make sure that there are no air bubbles under the
probe tip.
11. Push to measure the third calibration solution, if applicable.
When the calibration is good, the display briefly shows OK and then
goes to the standby mode.