ViscoClock plus

ViscoClock plus
ViscoClock plus
ViscoCIock plus - Measurement plus data storage
The ViscoCIock plus is an electronic timing unit for glass capillary viscometers used to determine kinematic
and relative viscosity. Succeeding the well-proven ViscoCIock, the new instrument features data storage
and simpler handling. The ViscoClock plus is especially designed for Ubbelohde type viscometers which
are well-known for highest precision.
The ViscoCIock plus
The ViscoClock plus automatically measures the flow time of temperature-stabilized liquids in capillary
viscometers by means of infrared light barriers: the manual measurement with a stopwatch becomes
The viscometer including a sample is inserted into the ViscoClock plus and immersed into a thermostatic
bath for temperature stabilization. After thermostating, the sample is pumped into the measuring bulb,
and the flow time is detected automatically. The large display enables easy read-off of flow times and
additional information: date, time, sample ID and viscometer ID.
Automatic measurement of flow times
The ViscoCIock plus is designed for SI Analytics® Ubbelohde, Micro Ubbelohde and Micro Ostwald
viscometers. The flow time is measured automatically by two infrared light barriers which detect the
passing liquid meniscus. The repeatability of the automatic time measurement is considerably higher in
comparison to the measurement using a stop watch. Therefore some viscometry standards allow a flow
time reduction in case of automatic flow time measurement.
Properties and materials
The ViscoCIock plus can be used for measuring temperatures ranging from -40 °C to 150 °C. The stand of
the ViscoClock plus ist made of high quality polymer PPA. For temperature stabilization in a thermostatic
bath, the following liquids are suitable: Water, alcohol, glycol, paraffin oil, and silicon oil.
The electronic measuring unit is built-in to a PP casing.
Easy handling
The ventilation of Ubbelohde viscometers is managed by an electromechanic valve which makes handling
easier in comparison to the mechanical mechanism of the previous ViscoClock.
Data storage
The measuring results of the ViscoClock plus can be stored on a USB flash drive including date, time and
sample/viscometer ID. The data are stored as pdf (non-editable) and csv (editable). Alternatively, for data
transfer the ViscoClock plus can be connected to a printer (TZ 3863) or a PC.
ViscoClock plus
Automatic and precise flow time
measurement for a low price
Suitable for SI Analytics® Ubbelohde,
Micro Ubbelohde and Micro Ostwald
Data storage incl. time, date, viscometer and sample ID
ViscoClock plus - head
Stand is made of high performance
engineering plastic PPA and enables
measuring temperatures up to 150°C
Electromagnetic venting valve for
convenient handling of Ubbelohde
Compatible with all SI Analytics®
thermostatic bath types
ViscoClock plus
ViscoCIock plus - The plus for your measurements
ViscoCIock plus - Perfectly harmonized
Sample and viscometer identification
...with our thermostats
To allocate the stored measuring results, the user can enter 2-digit numbers to the ViscoClock plus
before measurement. These IDs – together with date and time – ensure an unambiguous assignment of
the flow times.
Our ViscoClock plus is perfectly harmonized with our thermostat baths. If needed we provide you with
perfectly matching ViscoClock modules..
Absolute viscosity
ViscoClock plus
To determine absolute kinematic viscosities, calibrated viscometers have to be used. To guarantee best
accuracy, viscometers which were calibrated by automatic measurement should be used. The constant
of automatic calibration can be slightly different in comparison to manual calibration, as the level of the
light barriers may not be identical to the position of timing marks.
Relative viscosity
Thermostat CT72/P
For determination of relative viscosities, calibrated as well as non-calibrated viscometers can be used.
For evaluation, the calibration constant is not required in this case.
Well arranged:
The new display
Thermostat CT72/2
The viscometer stand:
high-performance plastic PPA
Technical Data - ViscoCIock plus
Ordering Information
Measuring range - Time up to 999.99 s; resolution 0.01 s
Type No.
Order No.
Accuracy of time
± 0.01 s / ± 1 digit; however no more precise than 0.1 %;
ViscoClock plus
Timing unit for capillary viscometer. Including power supply 100-230V and
hand pump
Measuring range viscosity
0.35 to10,000 mm²/s (cSt)
LCD grafic display (FSTN) 128x64 pixel, 51x31mm (w x h)
indicated as measuring uncertainty with a confidence level of 95 %
the absolute, kinematic viscosity is additionally dependent on the uncertainty of the
numerical value of the viscometer constant and on the measuring conditions, in particular
the measuring temperature.
seconds indication with 2 decimal digits after the decimal point, resolution 0.01 s
Voltage supply
DC + 9 V
Power supply
socket for low voltage connection: coaxial power connector, inner diameter 2.1 mm, plus
pole at inner contact
ViscoClock plus M1, 230V 285417910
ViscoClock plus and acrylic glass thermostatic bath CT72/P (230V) for
temperatures +10 °C … +60 °C
ViscoClock plus M1, 115V 285417920
ViscoClock plus and acrylic glass thermostatic bath CT72/P (115V) for
temperatures +10 °C … +60 °C
ViscoClock plus M2, 230V 285417930
ViscoClock plus and glass panelled thermostatic bath CT72/2 (230V) for
temperatures -40 °C … +150 °C
ViscoClock plus M2, 115V 285417940
ViscoClock plus and glass panelled thermostatic bath CT72/2 (115V) for
temperatures -40 °C … +150 °C
for connection of Universal power supply TZ 1858
Power supply
in accordance to class of protection III
degree of protection for dust and humidity IP 50 in accordance with DIN 40 050
Universal power supply TZ 1858: 100 – 240 V, 50 – 60 Hz (9 V, 550 mA)
not suitable for use in areas subject to explosion hazards
Plug Connections
USB Host to connect USB flash drive or printer (TZ 3863)
USB OTG to connect (PC), printer (TZ 3863) or USB flash drive
Type A USB connector
Get our know-how into your lab!
With our Visco Handbook.
Type B mini USB connector
Ambient Conditions
Ambient temperature
+ 10 to + 40 °C for storage and transport
Operating temperature stand: – 40 to + 150 °C
electronic measuring unit: +10 to +40 °C
in accordance with EN 61 010, Part 1;
max. relative humidity 80 % for temperatures up to 31 °C,
decreasing linearly to 50 % of relative humidity at a temperature
of 40 °C
stand: polyphthalamide (PPA)
casing*: polypropylene (PP)
gaskets: silicone
~515 x 90 x 30 mm (H x W x D)
~450 g (without viscometer)
power supply unit: ~220 g
Country of origin
Federal Republic of Germany
CE symbol
In accordance with low voltage guideline 2014/35/EU
Test regulation EN 61 010-1:2011-07 for laboratory instruments in accordance with EMC
regulation 2014/30/EU
Test regulation EN 61 326 Part1:2012
In accordance with RoHS regulation 2011/65/EU;
Test regulation EN 50 581:2013-02
FCC Symbol
Viscometer types
Ubbelohde (DIN; ISO; ASTM; Micro), Micro-Ostwald, manufactured by SI Analytics®
thermostatic baths
The ViscoClock plus can be used in all SI Aanyltics bath types
Please send us an Email
with your complete contact
details and the number of
Handbooks you need to:
* Use in heat carrier liquids can result in discoloration of the synthetic material. The discoloration does not, however, have any effect on the
function and quality of the ViscoClock. Subject to technical changes.
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© 2016 Xylem, Inc.
980 095US
Version 07/2016
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