Connecting The Viscometers And Other Devices - Xylem SI Analytics ViscoPump II Manual De Instrucciones

Initial operation ViscoPump II

2.4 Connecting the viscometers and other devices

The ViscoPump II modul 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 viscometers.
Owing to careful manufacture and quality-assurance procedures, all viscometers from SI Analytics
meet 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 guarantees an absolutely precisely reproducible
calibration. For Ubbelohde viscometers having the same constant, the same correction seconds
(Hagenbach correction) are valid. Gauging by the user is not necessary, since the corrections
correspond to the theoretical values as taken from the operating instructions for the viscometers. This
statement is true for both Ubbelohde viscometers of normal size as well as for micro viscometers.
Note
It is also possible to connect or control other devices (such as absorption traps, overflow guards
etc). Depending on the intended use of the ViscoPump II modul, it may be highly recommendable to
connect these devices, please refer to the items below.
2.4.1 TC viscometers with thermistor sensors
Fill the viscometer (approx. 18 - 20 ml), then place it in the thermostat bath.
Connect the ViscoPump II modul VZ 8512 and 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 II module (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 = suction, black =
venting) when connecting the pneumatic screwed connections to the ViscoPump II module for TC
vis cometers.
2.4.2 Viscometers using light-barrier sensing
Use the hose/cable combination to make an electrical and pneumatic connection between the
ViscoPump II modul VZ 8511 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. 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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