Xylem SI Analytics AVS 470 Manual De Instrucciones página 44

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2.3
Connecting the viscometers and other devices
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The AVS 470 allows the use of most various viscometer types:
DIN, ASTM, Ubbelohde and Micro Ubbelohde viscometers as well as Cannon-Fenske Routine, Micro TC
and Micro Ostwald viscometer
Owing to careful manufacture and quality-assurance procedures, all viscometers from SI Analytics
the highest accuracy standards.
The K viscometer constant is determined individually by way of a calibration of each glass capillary
viscometer. Owing to the use of high-quality measurement and testing equipment and the application of
national standard gauges, SI Analytics
For the flow time, a correction time can be determined based on the viscometer constant and the viscometer
design, expressed by the type no. (Fig. 3). See also  chapters 4 and 10. This statement is true for both
Ubbelohde viscometers of normal size as well as for micro viscometers.
It is also possible to connect or control other devices (such as absorption traps, overflow guards etc.).
Depending on the intended use of the AVS
devices, please refer to the items below.
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The AVS 470 is not intended to be connected to a computer, piston burettes or similar devices working
according to the daisy-chain principle of SI Analytics
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AVS 370 Viscosity Measuring Unit from SI Analytics
corresponding documentation.
In order to better follow the measurement process in the bath, the optionally available bath backlighting
VZ 5405 can be connected to the AVS
purpose.
TC-Viscometer with thermistor sensors
2.3.1
Fill the viscometer and insert it in the thermostat bath. Connect the AVS
the TC viscometer using the hose/cable combination which comes with the device. To do so, place the
device in the holders, then attach the quadruple plug of the cable to the viscometer and the ViscoPump III
module VZ 8562 (first plug, then screw), subsequently, make the screwed connections in accordance with
the numbers indicated on the hoses and the rack. In the case of "pressing" operation, the capillary tube
remains open, for "sucking" operation the filling tube is to be left open. Please observe the colour codes
(red = sucking, black = venting) when attaching the pneumatic screwed connections to the ViscoPump III
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module of the AVS 470.
Viscometer with light-barrier sending
2.3.2
Use the hose/cable combination to make an electrical and pneumatic connection between the
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AVS 470 and the measurement stand. The plugs are firmly connected to the sockets by rotating the union
sleeve. Please observe the colour codes (red = sucking, black = venting) when screwing the threaded
pneumatic connections into the ViscoPump II module VZ 8561. Please insert the selected capillary
viscometer into the fixating rack as is shown in Fig. 4, then fill it. Insert the fixating rack together with the
viscometer into the measurement stand (with the cut-out at the bottom sheet pointing forwards).
The cut-out will latch into the lug provided. Pressing the viscometer slightly against the fixating rack will latch
it into the holding spring located on the measurement stand.
Fig. 4 Inserting or replacing a viscometer with light-barrier sensing
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guarantees an precisely reproducible calibration.
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470, it may be highly recommendable to connect these
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. If you wish to use a computer, please select the
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; in this case, please contact SI Analytics
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470. In addition, the adapter cable VZ 5408 is required for this
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470 Viscosity Measuring Unit and
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meet
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for the