A-96.250.511 / 091120
AMI Turbiwell
Instrument Setup
47
4.2. Calibration, Matching and Verification
Calibration If required by the local regulatory authority, a calibration can be car-
ried out at the customer's site. This calibration is performed with a
specified formazine standard, see Calibration, p. 59 for details. The
zero point defined during factory calibration is not changed by this
calibration, but only the slope of the calibration line. The calibration is
accepted if the deviation is less than 25% of the factory calibration.
The long-term stability of the AMI Turbiwell can be verified with a ver-
ification kit that must be matched against the current calibration.
Matching Matching a verikit is necessary to measure and store the specific tur-
bidity of a verikit. Each subsequent verification using the respective
verikit is based on this value.
With a verikit that has been matched, you can carry out a periodic
verification. The deviation must be within 10% of the reference val-
ue.
Verification Perform a verification with a verikit (see Swan Verification Kit, p. 64)
or a wet verification (see Wet Verification, p. 72) after run-in time to
check the instrument performance.
To Next Page
Loading...