horiba HU-200TB-W SS-120-W, Инструкция по эксплуатации

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Data
81
Option

Liquid span bottle
Use the Liquid span bottle as a secondary reference for span measurement. The span can be
measured by inserting a Liquid span bottle into a cell that is filled with zero water, without
preparing a span solution. Although the turbidity of the span solution is already known, the
turbidity of a Liquid span bottle is not known. Use the value obtained by measuring the Liquid
span bottle using the turbidity meter calibrated with the span solution as the reference value
during calibration from the next time. Write down the reference value on a label. Tested values
may be included with the equipment at the time of shipment from the manufacturer. When the
turbidity meter is calibrated with the standard solution used by the customer, it becomes
necessary to update the value for the Liquid span bottle.
The contents of the Liquid span bottle are water solutions of refined Kaolin, which contain a
trace amount of dispersant. Immediately before inserting the Liquid span bottle into the
detector, shake it adequately until all deposits disappear. While the Kaolin is flowing, turbidity
varies. Once it stops flowing, a constant turbidity is indicated for several minutes. Wait for 1
minute until turbidity is stabilized after insertion. After that, calibrate the detector for span
sensitivity to the reference value within about 6 minutes.
The Liquid span bottle cannot be used in air. Be sure to insert it into the cell filled with zero
water.

Turbidity of calibration bottle
Dilute 10000 mg/L of Kaolin standard solution with deionized water, then put the solution into
the calibration bottle. Adjust the concentration of Kaolin to a turbidity of about 50

to 80

of
the range, according to the relevant range. Leave about 5

air space at the top of the bottle
so that it can be agitated. When Kaolin of the same turbidity is put in a bottle, the turbidity
value slightly decreases as compared with the value when it is poured into the cell. At this
point, be sure to adjust the turbidity to over 5 degrees. If the turbidity is lower than this level,
the turbidity value will not be stabilized due to Kaolin adhering to the vessel. In this case, use
a bottle filled with a solid turbidity, instead of water solution.
If Formazin and Polystyrene Latex are used as reference substances for turbidity, span
calibration can be performed by putting Kaolin into a bottle. In this case, describe the
measured value obtained from the Formazin or Polyethylene Latex calibration curves. Do not
put diluted Formazin in a bottle because turbidity changes.

Liquid span bottle insertion procedure
1.
Before inserting a Liquid span bottle into the cell, remove any dirt from the Liquid
span bottle.
2.
Insert the Liquid span bottle into the cell, which has already been filled with zero
calibration water beforehand.
Turbidity is unstable in air and the value changes.
3.
Insert and remove the bottle several times so that air bubbles do not adhere to the
bottle. Push the bottle into the cell in the direction determined by the pin, until the
calibration jig hits the top surface of the detector.
Calibration jig
Calibration bottle
Solution for which Kaolin concentration
has been adjusted
Liquid span bottle