Hach LZY904.98.00002 Instructions D'utilisation page 20

Do calibration verifications between calibrations according to the regulatory recommendations to
identify if the instrument operates correctly and is calibrated.
When a calibration verification is done between calibrations, the verification standard is measured.
The measured value is compared to the recorded value of the verification standard.
4.1 Configure the verification settings
Measure the value of the verification standard. Set the acceptance range and measurement units for
verification. Set the verification reminder and type of menu guided verification. Set the output
behavior during verification.
1. Push menu.
2. Select SENSOR SETUP>VERIFICATION>SETUP.
3. Select an option.
Option
MENU GUIDED
DEFINE STD VAL Measures the verification standard for later use during the verification. The instrument
ACCEPT. UNIT
ACCEPT. RANGE Sets the maximum difference permitted between the recorded value of the verification
VERIF
REMINDER
OUTPUT MODE
20 English
Description
Sets menu-guided verification to SEALED VIAL, SYRINGE or OFF (default). Verification
instructions show on the controller display during verification when set to SEALED VIAL
or SYRINGE. Select SEALED VIAL for verification with the glass verification rod.
records the results to the data log. For the best results, measure the verification standard
immediately after calibration.
Sets the acceptance range for verification to a percentage (1 to 99%) or an NTU value
(0.015 to 100.00 NTU). Options: % or NTU (or mNTU).
standard and the measured value of the verification standard during verification. Options:
1 to 99% or 0.015 to 100.00 NTU.
Sets the time interval between calibration verifications. The display will show a reminder
when a verification is due. Options: OFF(default), 1 day, 7 days, 30 days or 90 days.
When a verification is done, the verification time is set to zero.
Sets the output behavior during verification. ACTIVE-The outputs continues to agree
with the operating conditions. HOLD (default)-Keeps the outputs at the last known value
when communication is lost. SET TRANSFER-Sets the outputs to the Set Transfer value
selected in the controller settings.