Rion VT-05 User manual

3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan
http://www.rion.co.jp/english/
INSTRUCTION MANUAL
VISCOTESTER
VT-05 / VT-06

i
Organization of this manual
This manual describes the features and operation principles of the Viscotester VT-05
(for low viscosity measurement) and VT-06 (for high viscosity measurement). The
following pages contain important information on safety. Be sure to read this part.
This manual contains the following sections.
Outline
Gives basic information on the features of the unit.
Controls and functions
Briey identies and explains all controls and other parts of the unit.
Preparations
Explains how to make power connections and how to mount the rotor and
cup.

ii
* All company names and product names mentioned in this manual are
trademarks or registered trademarks of their respective owners.
Measurement
Describes how to perform the measurement.
Applied part
Describes rotor extension for VT-06.
Specications
Lists the technical specications of the unit

iii
FOR SAFETY
In this manual, important safety instructions are specially marked as shown
below. To prevent the risk of injury to persons and severe damage to the unit
or peripheral equipment, make sure that all instructions are fully understood
and observed.
Caution Disregarding instructions
printed here incurs the risk of
injury to persons and/or dam-
age to peripheral equipment.
Mentioned about the tips to
use this unit properly. (This
messages do not have to do
with safety.)
Note
Important
Disregarding instructions
printed here incurs the risk of
damage to the unit.

iv
Precautions
VT-05
•The unit is designed for making measurements using cup A containing
about 460 mL of sample uid. If another container is used, the viscosity
resistance working on the rotor will be different, leading to deviations in
the measurement result.
•The viscosity scale readings for the various rotor types overlap in part.
For example, the following viscosity ranges can be measured with the
following both rotors:
15 to 33 mPa•s: No. 4 or No. 5 rotor
50 to 150 mPa•s: No. 5 or No. 3 rotor
However, depending on the properties of the sample uid and on mechanical
calibration results, the obtained measurement values may be different when
changing rotors. To facilitate the correct evaluation of data, you should
therefore note the rotor number along with the measurement results.

v
VT-06
•The No. 1 rotor and No. 2 rotor are designed for making measurements
using a JIS 300 mL beaker containing about 350 mL of sample uid. If
another container is used, the viscosity resistance working on the rotor
will be different, leading to deviations in the measurement result. If a
different container has to be used, make sure that it is considerably larger
than the JIS 300 mL beaker. In this case, the obtained measurement values
will be low.
The No. 3 rotor must be combined with the No. 3 cup, otherwise large
errors will occur in the reading.
*The actual capacity of the JIS 300 mL beaker is about 420 mL.

vi
•The viscosity scale readings for the various rotor types overlap in part.
For example, the following viscosity ranges can be measured with the
following both rotors:
3 to 13 dPa•s: No. 3 or No. 1 rotor
100 to 150 dPa•s: No. 2 or No. 1 rotor
However, depending on the properties of the sample uid and on mechanical
calibration results, the obtained measurement values may be different when
changing rotors. To facilitate the correct evaluation of data, you should
therefore note the rotor number along with the measurement results.

vii
Common precautions
•Keep the time for one measurement under 100 seconds.
•Ambient conditions for operation of the unit are as follows:
temperature range 5°C to 35°C, relative humidity 10% to 90%RH.
•Because the drive section is not hermetically sealed, do not use the unit
in environments with volatile gas or dust pollution. Otherwise the drive
section may be damaged.
•When attaching or removing a rotor, put the viscotester in a horizontal
position and carefully move the rotor in the vertical direction. To prevent
the possibility of damage, take care not to exert strong force on the rotor
mounting shaft in the vertical or horizontal direction.
•The rotor mounting shaft is screwed into the body of the unit. Take care
not to inadvertently dislodge it when attaching or removing a rotor.

viii
•The rubber section of the rotor mounting shaft may drop out at the time of
measurement. When you want to avoid the foreign material to a sample,
remove the rubber section at the time of measurement.
•Remove the batteries from the unit when it is not being used, to prevent
the possibility of damage by leaking battery uid.
•Protect the unit from water, dust, extreme temperatures, humidity, and direct
sunlight during storage. Also keep the unit away from air with high salt or
sulphur content, gases, and stored chemicals during storage and use.
•Do not try to disassemble or alter the unit.
•Dispose of the unit and of batteries only according to national and local
regulations at the place of use.
•Do not tap the LCD panel of the unit with a pointed object such as a
pencil, screwdriver, etc.

ix
•Clean the unit only by wiping it with a soft, dry cloth or, when neces-
sary, with a cloth lightly moistened with water. Do not use any solvents,
cleaning alcohol or chemical cleaning agents.
•The optional stand (VA-04) is useful to stabilize the viscotester during
long-term or continuous measurements.
•To ensure continued accuracy, have the unit checked and serviced at
regular intervals. Contact the supplier.
•In case of malfunction, do not attempt any repairs. Note the condition of
the unit clearly and contact the supplier.

x
Change in viscosity unit
According to Japanese and international standard agreements, the viscosity
unit is displayed in the Pascal-second (Pa•s). The relation between the Pa•s
and Poise (P) is as follows.
VT-05: 1 mP•s = 1 cP
mPa•s: Millipascal-seconds
cP: Centipoise
VT-06: 1 dP•s = 1 P
dPa•s: Decipascal-seconds
P: Poise

xi
Contents
FOR SAFETY............................................................................... iii
Change in viscosity unit..................................................................x
Outline ............................................................................................1
Controls and functions ....................................................................2
Conguration (VT-05) ...............................................................2
Conguration (VT-06)...............................................................3
Top view ....................................................................................4
Rear view...................................................................................5
Bottom view ..............................................................................6
Display ......................................................................................7
Operation key panel...................................................................8

xii
Preparations ..................................................................................10
Power Supply ..........................................................................10
Attaching the Rotor and Cup (VT-05) .....................................15
Attaching the Rotor (VT-06) ..................................................17
Preparing the Sample Fluid ...................................................18
Measurement.................................................................................20
Applied part ..................................................................................24
Rotor extension (only for VT-06) .............................................24
Specications ................................................................................25

1
Outline
The Viscotester VT-05/VT-06 is a compact, uni-cylinder rotational viscometer
designed for easy use in the eld. When a rotor put into the sample liquid
is rotated by xed speed, a viscous resistance is caused. Viscosity can be
measured by detecting the viscous resistance (torque). Three different types
of rotors are supplied, covering a wide range of applications.

2
Controls and functions
Conguration (VT-05)
Main unit No. 3 rotor No. 4 rotor No. 5 rotor
AC adapter (option)
IEC LR6
(size AA)
batteries Cup A (no cutout) Cup B (with cutout)

3
Controls and functions
Conguration (VT-06)
Main unit
AC adapter (option)
No. 3 rotor
IEC LR6
(size AA)
batteries
No. 1 rotor No. 2 rotor
No. 3 cup
Rotor extension

4
Controls and functions
Top view
Bottom cover
Display
(see page 7)
Operation key panel
(see page 8)
Stand mounting
screw

5
Controls and functions
Rear view
Note
In order to protect the internal gears, the rotor
mounting shaft is designed to be detachable. Like
the rotor, the screw thread is left-handed, which
may lead to loosening when removing the rotor.
If this happens, lightly tighten the shaft again.
Battery compartment
Cup mounting pin Rotor mounting shaft
(with rubber cover)

6
Controls and functions
Bottom view
DC IN jack
MODE selector switch
A: Normal operation
B: The motor starts to turn at the same time
the power key is set to ON.