Hach TL2350 Manuel D'utilisation De Base page 15

Option
EU Pharm (0–30 NTU) Full-range calibration (<0.1 NTU, 3 NTU, 6 NTU, 18 NTU, 30 NTU).
Custom Calibration
4. Select the remaining calibration options.
Option
Verify after Cal.
Calibration
Reminder
Reset to Factory
Calibration
6.2.3 Prepare the StablCal standards
When received and at intervals:
1. Clean the exterior surface of the StablCal vials with laboratory glass cleaning detergent.
2. Rinse the vials with distilled or deionized water.
3. Dry the vials with a lint-free cloth.
Note: Never shake or invert the < 0.1 NTU standard. If the standard has been mixed or shaken, do not move the
vial for 15 minutes or more before using.
Note: Do not remove the caps from the sealed vials.
Make sure that the StablCal standards are at ambient instrument temperature before use (and no
greater than 40 °C (104 °F)).
Invert the standards (except < 0.1 NTU) before use. Refer to the user instructions that are supplied
with the StablCal standards.
6.2.4 StablCal calibration procedure
1. Push Login and
select the applicable
Operator ID. If login
is not necessary, go
to step 3.
Description
The user can enter a custom calibration for turbidity. The user selects
the number of calibration standards and the value of each calibration
standard. Use a custom calibration when smaller sample cells are
used with a sample cell adapter.
Description
Sets the instrument to start a verification immediately after the instrument
is calibrated. When set to on, the verification standard is measured
immediately after a calibration is done. The value of the verification
standard shows on the display as the last standard during calibration.
Sets the time interval between calibrations. When a calibration is due, the
display will show a reminder and a question mark on the calibration icon at
the top of the display. Options: Off (default), 1 day, 7 days, 30 days or
90 days. When a calibration is done, the calibration time is set to zero.
Sets the calibration settings to the factory defaults.
2. Push Login and
enter the password.
Push OK.
3. Remove the filter
assembly.
4. Clean the lens of
the USEPA filter
assembly. Refer to
Clean the filter
assembly (TL2300/
TL2350 only)
on page 21.
English 15