wtw inoLab Multi 9620 IDS User Manual

Turbidity measurement (VisoTurb
®
900-P) inoLab
®
Multi 9620 IDS
88 ba77173e04 12/2017
Criteria for a stable
measured value
The Stability control function checks whether the measured values are stable
within the monitored time interval.
The minimum duration until a measured value is assessed as stable is the mon-
itored time interval. The actual duration is mostly longer.
10.2 Calibration
10.2.1 Why calibrate?
The calibration line of the sensor is determined and stored through calibrating.
10.2.2 When to calibrate?
 When the calibration interval has expired
 At regular intervals
10.2.3 Calibration standards
Calibrate with 1 to 3 turbidity standard solutions. The standard solutions must
be selected in the following order.
The turbidity expected in the measurement dictates the number and selection
of the standards. Calibration has to be carried out for the range with the highest
You can prematurely terminate the Stability control function
manually with <ENTER> at any time. If the Stability control
function is prematurely terminated, the current measure-
ment data are output to the interface without the AutoRead
info.
3. Using <ENTER>, start a further measurement with Stability control.
or
Release the frozen measured value again with <AR>.
The display switches to the measured value display.
The [AR][HOLD] status display disappears.
Measured param-
eter
Time interval Stability in the time inter-
val
Turbidity
(FNU/NTU)
15 seconds
∆ : better than
1.0% of measured value
Standard solution Range (FNU/NTU)
1 0.0 ... 1.0
2 5.0 ... 200.0
3 200.0 ... 4000.0

wtw inoLab Multi 9620 IDS Specifications

General

Brand	wtw
Model	inoLab Multi 9620 IDS
Category	Measuring Instruments
Language	English