Hach 29971-72 Benutzerhandbuch Seite 14

5. Make sure that the gas pressure is 0.5 to 1 bar more than the dissolved CO
sample. Do not exceed the maximum permitted pressure for the package (bottle or can) or the
package could explode. For measurements with TC sensors, it is important to use the same
forcing gas pressure for both: calibration and gas measurement operations.
6. Shake the package, if applicable. In some beverage sampling applications, it is necessary to
shake the beverage packages to equilibrate the contents of the package. Use a reciprocating
shaker for a minimum of 3 minutes.
Indicating instrument setup
Make sure that the indicating instrument setup is completed before the measurements are started.
Configure parameters such as the gas to measure, the display units and the sensor membrane used.
Refer to the indicating instrument documentation for additional information.
Adjust the package position
Before the measurements are started, adjust the beverage package sampler for the type of beverage
sample container (bottle or can). Refer to
1. Push the top (moveable) black block to the highest position (A) to lift the piercing and sampling
assembly.
2. Make sure that the piercing lever (B) is in a vertical position.
3. Hold the piercing unit sliding assembly with one hand and loosen the orange handle (C).
4. Lift the piercing unit sliding assembly upwards on the two metal columns.
5. Put the beverage sample to be analyzed on the mat of the base plate (D).
Make sure to vertically install the beverage sample. If possible, pierce cans through the top. If
there is not sufficient area for piercing in the top of the can because of the tab, then pierce
through the bottom. Piercing through the bottom has the advantage that the metal is thicker and
less easily deformed, but sometimes has the disadvantage that the piercing needle becomes
immersed in the beverage.
6. Lower the piercing unit carefully until the piercing head support plate with the circular hole
touches the top of the beverage sample (E). The piercing head support prevents unwanted
movement of the beverage sample.
7. Lift the orange handle to the upper position of the groove and tighten it again.
The unit is prepared for measurement.
Note: If the type of package sample is changed, such as a different dimension bottle or can, do the adjust package
procedure again.
14 English
Figure 7 and to the steps that follow:
pressure of the
2