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2.4
Connecting the viscometers and other devices
The ViscoPump III module 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.
In the work mode "Press", in case of malfunction, the sample can emerge from the capillary
tube and could enter the thermostat bath! Therefore, especially during the pressing work mode, a
correct connection of the measuring tripod to the ViscoPump III and a properly used viscometer are very
important for the safe operation. With health hazardous and/or corrosive samples (e.g. acidic, toxic or
hazardous to the environment), the work mode "suction" is the preferred choice.
In the work mode "suction", the sample can be pumped into the ViscoPump in case of a
malfunction! In order to avoid this and the associated damage to the ViscoPump III, you must always
use a suitable tube kit including the safety bottles VZ 7021 or VZ 7022 during the work mode "suction".
In order review a possible immersion of the sample into the safety bottle, a capacitive sensor VZ 8552 is
highly recommended.
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 III modul, it may be highly recommendable to
connect these devices, please refer to the items below.
2.4.1
Viscometers using light-barrier sensing
Use the hose/cable combination to make an electrical and pneumatic connection between the ViscoPump
III module VZ 8561 and the measurement stand. The plugs are firmly connected to the sockets by
rotating the union sleeve. Please observe the color codes (red = sucking, black = venting) when screwing
the threaded pneumatic connections into the ViscoPump III module. Please insert the selected capillary
viscometer into the fixating rack as is shown in Fig. 5, 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. 5 Inserting or replacing a viscometer with light-barrier sensing
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