Hach Ultra ORBISPHERE 3625, Руководство оператора

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50 of 90 Operating Instructions - 3625 Package Analyzer
Operator Manual
ORBISPHERE
This message remains on for a few seconds, and then the display shows the
atmospheric pressure (P1) and temperature (T1) in the analyzer manifold. The pressure
and temperature screen alternates with the preceding message until you either pierce a
package (or press
ESC
to return to the main menu).
5.4 Measurement Process
5.4.1 Package Pressure Equalization
In order to perform an accurate analysis, partial pressures in the package must be
balanced between the gas phase (head space) and the liquid phase (beverage). The
packages to be tested must be gently agitated in the longitudinal direction for at least
three minutes, using a reciprocating shaker (Orbisphere model 32816).
We recommend the use of the Orbisphere's reciprocating shaker, as it provides an
agitating frequency adjustable from 0 to 300 cycles, with a span of about 5 cm (2 inches),
and offers a timer function.
Note:
It is recommended to perform the package analysis with packages at room temperature.
Contact your Hach Ultra agent for measuring cold packages.
When a series of cold packages follows a series of warm packages (or the opposite), the
sensors will measure an evolution in temperature, until thermal equalization is reached.
In such situation, pierce two packages and perform the measurement routine without
saving the results. The product flow created will stabilize the temperature in the system.
5.4.2 Prepare for Piercing
First, make sure the piercing knife used is correct for the application (metal or plastic).
Check that sampling tube is fully retracted inside the piercing knife, then that the rubber
seal is in good condition, and extends slightly below piercing knife tip.
To clamp a package into position, tilt the piercing lever backward, install a package on
mat, and bring lever to vertical position. Package must be vertical on the base mat, and
centered in upper positioning plate. During the analysis, the package must remain firmly
clamped; if not check positioning device height adjustment.
Following instructions given by the system, pierce the can’s top, or the bottle cap, where
the surface is smooth and flat, to get a good seal. On cans, the best area is usually
opposite the tab.