PCE Instruments PCE-RVI 2 User manual

PCE Americas Inc.
711 Commerce Way
Suite 8
Jupiter
FL-33458
USA
From outside US: +1
Tel: [phone]
Fax: [phone]
[e-mail]
PCE Instruments UK Ltd.
Units 12/13
Southpoint Business Park
Ensign way
Hampshire / Southampton
United Kingdom, SO31 4RF
From outside UK: +44
Tel: [phone]
Fax: [phone]
[e-mail]
www.pce-instruments.com/english
www.pce-instruments.com
Manual
Rotational viscometer PCE-RVI 2
Version 1.1
Date of creation: 05.10.2015
Date of last change: 17.05.2016

Manual
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Contents
1Introduction .............................................................................................................2
2Safety notes.............................................................................................................3
3Specifications..........................................................................................................3
4System description.................................................................................................4
5Receipt of the device ..............................................................................................6
5.1 Delivery content.......................................................................................................................... 6
5.2 Installation................................................................................................................................... 6
5.3 Connecting to the mains............................................................................................................. 6
6References to viscosity..........................................................................................7
6.1 Units............................................................................................................................................ 7
6.2 Important information.................................................................................................................. 7
6.3 Spindles...................................................................................................................................... 8
7Configuration settings............................................................................................9
8Operation...............................................................................................................11
8.1 Operation screen...................................................................................................................... 11
8.2 Application of the spindle.......................................................................................................... 12
8.3 Start measurement................................................................................................................... 12
9Selection tables.....................................................................................................13
9.1 Viscometer PCE-RVI 2 V1L...................................................................................................... 13
9.2 Viscometer PCE-RVI 2 V1R..................................................................................................... 13
10 Accessories...........................................................................................................14
10.1 Adapter for small sample volumes........................................................................................... 14
10.2 Adapter for low-viscosity materials........................................................................................... 17
10.3 Adapter for spiral movements................................................................................................... 19
11 Calibration .............................................................................................................23
12 Troubleshooting....................................................................................................23
13 Warranty.................................................................................................................23
14 Disposal.................................................................................................................24
15 Contact...................................................................................................................24
15.1 PCE Instruments UK ................................................................................................................ 24
15.2 PCE Americas .......................................................................................................................... 24
1 Introduction
Thank you for purchasing a rotational viscometer from PCE Instruments.
The device is used to measure the viscosity of a liquid, by calculating the mechanical resistance of a fluid
against a rotating spindle. The results are displayed as a value between 3 and 13.000.000mPa s with an
accuracy of ±1% based on the geometry of the spindle being used.

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2 Safety notes
Please read the operating manual thoroughly before using the device. The device must only be operated
by qualified personnel and any service or repairs must be carried out by PCE Instruments.
No liability is accepted for personal injury or damage to the equipment if the operating procedure, as
specified in the manual, is not adhered to.
When carrying out measuring tasks, always ensure the instruction manual is kept accessible for
reference purposes.
Servicing must only be carried out by a PCE instrument authorised service agent. Unofficial
updates or servicing could result in personal injury or damage to the device.
Only original approved manufacturer’s parts may be used for service or repair purposes.
The device must only be used within the specified temperature range.
The casing of the device should never be opened, except by approved PCE Instruments
personnel.
The device should not be placed on a surface with the user interface, i.e. keyboard face down.
No unauthorised technical changes should be carried out on the device.
The device can be cleaned using a damp cloth (pH neutral).
This user's handbook is published from PCE Instruments, no liability is taken.
Please read our General Guarantee Terms, they can be found in our General Terms of Business.
If you have any queries, please contact PCE Instruments.
3 Specifications
Speed range
Modell V1 –L/R
0.3; 0.5; 0.6; 1; 1.5; 2; 2,5; 3; 4; 5; 6; 10; 12; 20; 30; 50;
60; 100; 200 rpm
Measurement range with
default spindles
Model V1 –L
3 … 2000000 mPa s in 76 ranges; 19 revs with 4
spindles
Model V1 –R
20 … 13000000 mPa s in 114 ranges; 19 revs with 6
spindles
Accuracy
±1 % of the shown value
Repeatability
±0.2 %
Thermometer
Range
-15 °C … +180 °C (5° F … 356 °F)
Resolution
0.1 °C (0.1722 °F)
Accuracy
±0.1 °C
Power supply
100 … 240 V / 50…60 Hz
Current consumption
0.2 A
Max. altitude
2000 m above sea level
Operation temperature
10 … 40 °C
Rel. humidity
<80 %
Dimensions
330 x 300 x 430 mm
Weight
10 kg

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4 System description

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5 Receipt of the device
Please check the packaging for any obvious signs of damage before opening.
If the external packaging is found to be damaged, please notify the delivery company before opening.
After unpacking the viscometer, check the device for any obvious signs of damage. Should there be any
visible signs of damage, please notify PCE Instruments.
5.1 Delivery content
1. 1 x rack
2. 1 x rotational viscometer PCE-RVI 2
3. 1 x set of spindles L1 to L4 or R2 to R7
4. 1 x laboratory stand
5. 1 x instruction manual
6. 1 x temperature sensor
7. 1 x guard for measuring spindle
8. 1 x assembly tool
9. 1 x carrying case
10. 1 x power cable
11. 1 x storage stand for measuring spindles
Keep the packaging, in case the instrument needs to be returned. Parts that are damaged by
inappropriate packaging or inappropriate delivery are not covered by the manufacturer’s warranty.
5.2 Installation
For an appropriate installation proceed as follows
Remove the nut off the rack
Place the rack on the stand in the correct position. The thread
must be pointed in the direction of the stand’s nut.
Using the provided assembly tool and nut, screw the rack and the
stand together.
Attach the back pole to the clamp of the rack.
Move the lever down to fix the device.
Place the device on a solid and even surface.
Slide the plastic cover of the back pole downwards to remove.
The protection is only allowed to be moved to the side when the
plastic protection has been successfully moved down.
Balance the device with the rotary bases on the front of the stand.
The levelling indicator on the top will show you when the device is
levelled adequately.
Connect the device to the power supply system.
5.3 Connecting to the mains
Ensure that your power supply is correctly earthed and your device is set
to the correct voltage.

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6 References to viscosity
6.1 Units
This viscometer is a classic rotational viscometer for quick determination of the viscosity according to the
following standards:
BS: 6075, 5350
ISO: 2555, 1652
ASTM: 115, 789 1076, 1084, 1286, 1417, 1439, 1638, 1824, 2196, 2336, 2364, 2393, 2556, 2669, 2849,
2983, 2994, 3232, 3236, 3716
The operating principle of this viscometer is the same as with all rotational viscometers. A spindle (disc or
cylinder) is immersed into the fluid being analysed, the torque required to set the spindle into motion is
then measured. A spring is attached between the spindle and the drive-shaft of the motor. This rotates at
a set speed. The deviation angle between the spindle and the spring is measured electronically and
turned into a torque value. The torque value is dependent on both the spindle geometry and the rotational
speed of the spindle. From this result, the viscosity of the liquid can be directly derived and displayed in
mPa s/cP (dPa s/P).
Depending on the viscosity, the resistance against the movement of a substance changes in proportion to
the rotational speed or size of the spindle. The viscometer has been calibrated to give viscosity readings
in mPa s or cP (dPa s/P), depending on the rotational speed and the type of spindle used. Using a
combination of various spindle types with different rotational speeds enables readings to be taken across
a wide measurement range.
6.2 Important information
Viscosity:
Viscosity is the characteristic property of a liquid. It is a measure of the internal friction within a liquid
when individual layers within the liquid are brought into motion against each other. Viscosity values are
highly influenced by temperature. The standard units for dynamic viscosity measurement are: mPa s (S.I.)
or cP (C.G.S.)
1 mPa s = 1 cP (centi-Poise)
1 dPa s = 1 P (Poise)
Shear stress:
Shear stress is the force per area unit required to move two fluid layers against each other (internal
friction). Standard measuring units for the shear stress are: N/m² (S.I) or dynes/cm² (C.G.S).
Shear rate:
The shear rate is the velocity at which the various fluid layers move against each other. The standard
measuring unit for the shear rate is the “reciprocal second”, expressed as s-1 or 1/s.
Laminar flow:
Occurs when a fluid flows in parallel layers with no disruption between the layers. Laminar flow is
fundamental to the determination of dynamic viscosity.
Turbulent flow:
When a certain flow rate is exceeded, disruption between the layers of liquid can occur. This results in an
apparent increase in shear stress and falsely high viscosity readings. The change from laminar to
turbulent flow can be recognised by a sudden marked increase in viscosity values above a particular
speed. Generally, liquids can be classified by the relation between their shear stress and shear rate.
Newtonian fluids:
In Newtonian fluids the shear stress and the shear rate are directly proportional to each other. At a given
temperature, the viscosity of a Newtonian fluid remains constant regardless of the viscometer, spindle or
rotational speed. Examples of fluids with these properties are water or thin engine oil.

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Non-Newtonian fluids:
In these liquids there is no linear relationship between the shear stress and the shear rate. Therefore,
differing viscosity values will be obtained under different environmental and operating conditions. The
apparent viscosity of the liquid must be established by a fluid analysis. This result cannot be reproduced
by using a different viscometer, unless the environmental and operating conditions are identical, and the
analysis is carried out following a defined working process. The variables below influence the results:
Viscometer model
Dimension of the sample container
Filling level
Sample temperature
Spindle
Rotational speed
Whether or not a spindle protector is being used
Duration of the test (time dependant fluids)
Invariably, any change in the working methods will lead to a change in results.
Non-Newtonian liquids can have a variety of properties:
Pseudoplastic:
A fluid the viscosity of which decreases with an increase in the shear rate is called pseudoplastic. This
flow behaviour is also called “shearthinning”. Some examples of pseudoplastic fluids are: coatings, milk,
ink or jam.
Plastic:
Under static conditions, these fluids appear to be solid. In order to carry out an analysis of these fluids, it
is necessary for them to be subjected to a yield stress, so that they show characteristics similar to
pseudoplastic or dilatant fluids. Examples: toothpaste, chocolate or grease.
Dilatant:
A fluid the viscosity of which increases with an increase in the shear rate (shear-thickening flow
behaviour). Example: Solution of sugar and water or mixture of sand and water.
Time-dependent fluids:
A fluid the viscosity of which changes not only due to the shear rate, but also as a result of the time lapse
since the shear process was started is called a time-dependent fluid.
Thixotropic fluids:
In thixotropic fluids, the viscosity decreases when the shear stress increases over time, e. g. when the
fluid is stirred at a constant shear rate. The viscosity will increase when the shear stress ends.
Examples: ketchup, honey, non-drip paint, mayonnaise.
Rheopectic fluids:
Fluids the viscosity of which increases with increasing shear stress at a constant shear rate are called
rheopectic fluids.
Examples: lubricants, special types of paint.
6.3 Spindles
The spindles are made with high precision to ensure maximum repeatability of test results, as long as the
measuring instrument is used under the correct operating conditions.

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7 Configuration settings
Turn on the viscometer by pressing the main switch. The following notifications are displayed on the
screen for 2 seconds.
Press “Start” and “Enter” one after the other during these 2 seconds. The following appears on the
display:
With the “Up” or “Down” keys, select the preferred language (German, Japanese, Spanish, Polish,
French, English, Italian or Portuguese). Press “Enter” to confirm your language of choice.
The following notification then appears:
With the “Up” or “Down” keys, either select the unit for the viscosity SI (mPa s) or CGS (cP). Press
“Enter” to confirm your entry.
The following notification then appears:
With the “Up” or “Down” keys, either select the unit for the shear stress (S.S.), SI (N/m²) or CGS
(Dyne/cm²). Press “Enter” to confirm your entry.
The following notification then appears:
With the “Up” or “Down” keys, either select the unit for the temperature, Celsius or Fahrenheit. Press
“Enter” to confirm your entry.
The following notification then appears:

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With the “Up” or “Down” keys, either select the PRINTER or the COMPUTER mode. Press “Enter” to
confirm your entry and to switch to the option mode.
The viscometer can be connected to a small thermal printer in PRINTER
MODE (paper rolls ~57mm), to only print viscosity values when the “Start”
key is pressed.
Every time the “Start” key is pressed, a ticket as shown will be printed.
The viscometer sends a permanent print job in COMPUTER mode. The
viscometer and the computer have to be connected. The data format in
PRINTER mode is not suitable for small printers.
The following notification then appears:
The week day flashes. Press the “Up” or “Down” keys to change the day and
press “Enter” to confirm. The first digit of the date will then begin to flash.
Press the “Up” or “Down” keys to change the value and press “Enter” to
confirm. Continue in this manner to set the date and time. After 2 seconds the
notification changes to the data screen.

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8 Operation
Turn on the viscometer by pressing the main switch. The following notifications will appear on screen for
the next 2 seconds (presentation screen):
After 2 seconds, the display switches to the data screen and shows the latest saved parameters (spindle
and rate).
The name of the spindle flashes in the display. Press “Up” or “Down” to change the value and submit the
input by pressing the “Enter” button. Now the rotation rate (rpm) starts to flash. Press the “Up” or “Down”
keys to change the values and confirm the entry by pressing the “Enter” button. The parameter “range”
informs you about the maximum measurable viscosity value of the chosen spindle and rpm.
The notification “Press Start” flashes in the fourth line. When you press “Start”, the spindle begins to
rotate and the measurement starts. The operation screen appears:
The “Start” button can be pressed immediately. In this case, the device takes the last saved parameters
of the chosen spindle and rotation rate value and starts the measuring procedure.
8.1 Operation screen

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For the usage of the display, the following keys can be used:
Adjusting the speed
Stops motor and measurement
Starts motor and measurement
Stops the current process
8.2 Application of the spindle
If the plate spindle is chosen, be careful whilst immersing the spindle into the sample liquid to avoid
bubbles under the plate. To apply the spindle, slightly move the shaft
upwards with one hand and screw down the spindle with the other hand.
During this process, be careful to avoid bending the spindle and
damaging the shaft.
The spindle and the core thread of its counterpart have to be dirt-
free.
The spindle can now be immersed into the test liquid, up to the marker point
(groove on the spindle). The spindle must not be allowed to come into
contact with the sides of the container as otherwise the spindle and shaft
could be knocked out of vertical alignment or even damaged.
The spindle L4 and R7 have to immersed up to the boundary point. The spindles are made out of
AISI 316 stainless steel. Every spindle is identifiable by its engraving.
8.3 Start measurement
Press “Start” to begin the measuring procedure.
Constant flow conditions will be reached after a short period; the correct viscosity values can be read
after a few seconds (depending on the chosen rotational speed and the sample viscosity).
The notification “ERROR” signals that the maximum measureable viscosity values have been exceeded.
In this case, the velocity should be decreased or a bigger spindle should be used.
When you press the “Stop” key, the device’s motor stops; the viscosity value last measured is shown. To
protect the instrument’s sensitive parts, the speed decreases to 0 rotations. By pressing the “Start” key
again, the present speed will be reached. To change the speed or the spindle number, press the “Enter”
key. In case the measured viscosity value exceeds the optimal range (<10 % and >90 % of the maximum
value), an alert tone will sound.

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9 Selection tables
The tables contain orientation values for the viscosity. The recommended minimum reading is ~15
% of the full scale.
9.1 Viscometer PCE-RVI 2 V1L
The model PCE-RVI 2 V1L has 19 speeds (0.3; 0.5; 0.6; 1; 1.5; 2; 2.5; 3; 4; 5; 6; 10; 12; 20; 30; 50; 60;
100; 200 rpm). The model is delivered with the default spindle set (L1-L4). The spindle
L1 is used for measurements with low viscosity. When using this spindle, use it along
with the spindle protection to achieve correct measurements. The usage of the “adapter
for low-viscosity material” and the cylinder spindle for low-viscosity substances is
recommended to get accurate measurements. The spindle set TL5-TL7 is used with the
“adapter for small probe volumes”. These accessories are not part of the standard
delivery.
PCE-RVI 2 V1L: Default spindles L1-L4
Spindle
L1
L2
L3
L4
rpm
Viscosity in mPa s
0.3
2 x 104
1 x 105
4 x 105
2 x 106
0.5
1.2 x 104
6 x 104
2.4 x 105
1.2 x 106
0.6
1 x 104
5 x 104
2 x 105
1 x 106
1
6 x 103
3 x 104
1.2 x 105
6 x 105
1.5
4 x 103
2 x 104
8 x 104
4 x 105
2
3 x 103
1.5 x 104
6 x 104
3 x 105
2.5
2.4 x 103
1.2 x 104
4.8 x 104
2.4 x 105
3
2 x 103
1 x 104
4 x 104
2 x 105
4
1.5 x 103
7.5 x 103
3 x 104
1.5 x 105
5
1.2 x 103
6 x 103
2.4 x 104
1.2 x 105
6
1 x 103
5 x 103
2 x 104
1 x 105
10
6 x 102
3 x 103
1.2 x 104
6 x 104
12
5 x 102
2.5 x 103
1 x 104
5 x 104
20
3 x 102
1.5 x 103
6 x 103
3 x 104
30
2 x 102
1 x 103
4 x 103
2 x 104
50
1.2 x 102
6 x 102
2.4 x 103
1.2 x 104
60
1 x 102
5 x 102
2 x 103
1 x 104
100
60
3 x 102
1.2 x 103
6 x 103
200
30
1.5 x 102
6 x 102
3 x 103
Increment
1 mPa s
1 mPa s
10 mPa s
10 mPa s
9.2 Viscometer PCE-RVI 2 V1R
The model PCE-RVI 2 V1R has 19 speeds (0.3; 0.5; 0.6; 1; 1.5; 2; 2.5; 3; 4; 5; 6;
10; 12; 20; 30; 50; 60; 100; 200 rpm). The model is delivered with the default
spindle set (R2-R7). The spindle R1 is used for measurements with low viscosity.
With this spindle, you have to use the spindle protection to achieve correct
measurements. Since the R models are normally used for medium-viscosity
measurements, the R1 spindle is not used very often and is therefore not part of
the standard tools but can be ordered separately. The spindle set TR8 –TR11 is
used with the “adapter for small sample volumes”. This set is not included in the
standard delivery.
Spindle protection
Spindle protection

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PCE-RVI 2 V1R: Default spindles R2-R7 + optional R1
Spindle
R1
(optional)
R2
R3
R4
R5
R6
R7
rpm
Viscosity in mPa s
0.3
33.3 x 103
133.3 x
103
333.3 x
103
666.6 x
103
1.3 x 106
3.33 x 106
13.3 x 106
0.5
2 x 104
8 x 104
2 x 105
4 x 105
8 x 105
2 x 106
8 x 106
0.6
16.6 x 103
66.6 x 103
166.6 x
103
333.3 x
103
666.6 x
103
1.6 x 106
6.6 x 106
1
1 x 104
4 x 104
1 x 105
2 x 105
4 x 105
1 x 106
4 x 106
1.5
6.6 x 103
26.6 x 103
66.6 x 103
133.3 x
103
266.6 x
103
666.6 x
103
2.6 x 106
2
5 x 103
2 x 104
5 x 104
1 x 105
2 x 105
5 x 105
2 x 106
2.5
4 x 103
16 x 103
4 x 104
8 x 104
16 x 104
4 x 105
1.6 x 106
3
3.3 x 103
13.3 x 103
33.3 x 103
66.6 x 103
133.3 x
103
333.3 x
103
1.3 x 106
4
2.5 x 103
1 x 104
2.5 x 104
5 x 104
1 x 105
25 x 104
1 x 106
5
2 x 103
8 x 103
2 x 104
4 x 104
8 x 104
2 x 105
8 x 105
6
1.6 x 103
6.6 x 103
16.6 x 103
33.3 x 103
66.6 x 103
166.6 x
103
66.6 x 103
10
1 x 103
4 x 103
1 x 104
2 x 104
4 x 104
1 x 105
4 x 105
12
8.33 x 102
3.3 x 103
8.3 x 103
16.6 x 103
33.3 x 103
83.3 x 103
333.3 x
103
20
5 x 102
2 x 103
5 x 103
1 x 104
2 x 104
5 x 104
2 x 105
30
3.33 x 102
1.3 x 103
3.3 x 103
6.6 x 103
13.3 x 103
33.3 x 103
133.3 x
103
50
2 x 102
8 x 102
2 x 103
4 x 103
8 x 103
2 x 104
8 x 104
60
1.66 x 102
6.6 x 102
1.6 x 103
3.3 x 103
6.6 x 103
16.6 x 103
66.6 x 103
100
1 x 102
4 x 102
1 x 103
2 x 103
4 x 103
1 x 104
4 x 104
200
50
2 x 102
5 x 102
1 x 103
2 x 103
5 x 103
2 x 104
Increme
nt
1 mPa s
1 mPa s
10 mPa s
10 mPa s
10 mPa s
100 mPa s
100 mPa s
10 Accessories
10.1 Adapter for small sample volumes
Measurement range
Model V1L: 1.5* - 200000 mPa s/cP
Model V1R: 25* - 3300000 mPa s/cP
*High rotational speeds required for very low-viscosity measurements can have a negative influence on
viscosity readings.
*Viscosity measurements have to be carried out under laminar flow conditions as turbulent flow conditions
can cause erroneously high viscosity values.
Description
The adapter for small fluid volumes is available as an accessory for precision spindles which rotate inside
a sample container. The container fits into a water jacket which enables water circulation and thus precise
temperature control (between -10 °C and 100 °C). The adapter for the special spindle set must be
ordered separately. It is normally used for testing very small fluid volumes (8-13ml)
This accessory part is available to order in two versions:
Standard adapter
Adapter with temperature sensor in the lower cap to allow direct sample temperature monitoring

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Assembly
Using the provided screw (3), fix the water jacket (1) onto the
rear support (2).
Close the sample container (4) with the lower cap (5). Ensure
that the lower cap is properly fixed.
Fill the sample container (4). Ensure that there are not any
bubbles in the container. Tilt the container and fill it with a large
syringe. The needed sample volume is relatively small (8-13
ml).
Check the sample volume. The spindle should be covered
completely.
Hang the desired spindle (6) onto the spindle hook (7). Attach
the hook to the screw (8).
Insert the spindle with hook and screw into the sample
container.
Insert the sample container (4) into the water jacket (1) from
below.
Fix the sample container (4) in the water jacket (1). The groove
of the lower cap has to be aligned with the fastening screw (9)
of the water jacket. Turn the sample container to do so.
Attach the upper cap (10). Make sure that the spindle does not
fall into the sample container.
Using the provided screw (11), fix the rear support (2) onto the
viscometer.

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Selection tables for special spindles
PCE-RVI 2 V1L (TL5-TL7)
Spindle
TL5
TL6
TL7
rpm
Viscosity in mPa s
0.3
1 x 104
1 x 105
2 x 105
0.5
6 x 103
6 x 104
1.2 x 105
0.6
5 x 103
5 x 104
1 x 105
1
3 x 103
3 x 104
6 x 104
1.5
2 x 103
2 x 104
4 x 104
2
1.5 x 103
1.5 x 104
3 x 104
2.5
1.2 x 103
1.2 x 104
2.4 x 104
3
1 x 103
1 x 104
2 x 104
4
7.5 x 102
7.5 x 103
1.5 x 104
5
6 x 102
6 x 103
1.2 x 104
6
5 x 102
5 x 103
1 x 104
10
3 x 102
3 x 103
6 x 103
12
2.5 x 102
2.5 x 103
5 x 103
20
1.5 x 102
1.5 x 103
3 x 103
30
1 x 102
1 x 103
2 x 103
50
60
6 x 102
1.2 x 103
60
50
5 x 102
1 x 103
100
30
3 x 102
6 x 102
200
15
1.5 x 102
3 x 102
Increment
0.1 mPa s
1 mPa s
10 mPa s
Characteristics of special spindles
Spindle
Shear rate (S. R.)
(Seg.-1)
Sample volume (cc)
TL5
1.32 x rpm
8.0
TL6
0.34 x rpm
10.0
TL7
0.28 x rpm
9.5
The stated shear rates (S.R.) have been calculated based on the assumption that the fluids have
Newtonian characteristics.
PCE-RVI 2 V1R (TR8-TR11)
Spindle
TR8
TR9
TR10
TR11
rpm
Viscosity in mPa s
0.3
166.6 x 103
833.3 x 103
1.6 x 106
3.3 x 106
0.5
1 x 105
5 x 105
1 x 106
2 x 106
0.6
83.3 x 103
416.6 x 103
833.3 x 103
1.6 x 106
1
5 x 104
25 x 104
5 x 105
1 x 106
1.5
33.3 x 103
166.6 x 103
333.3 x 103
666.6 x 103
2
25 x 103
125 x 103
25 x 104
5 x 105
2.5
2 x 104
1 x 105
2 x 105
4 x 105
3
16.6 x 103
83.3 x 103
166.6 x 103
333.3 x 103
4
12.5 x 103
62.5 x 103
125 x 103
25 x 104
5
1 x 104
5 x 104
1 x 105
2 x 105
6
8.3 x 103
41.6 x 103
83.3 x 103
166.6 x 103
10
5 x 103
25 x 103
5 x 104
1 x 105
12
4.16 x 103
20.83 x 103
41.6 x 103
83.3 x 103
20
2.5 x 103
12.5 x 103
25 x 103
5 x 104
30
1.6 x 103
8.3 x 103
16.6 x 103
33.3 x 103
50
1 x 103
5 x 103
1 x 104
2 x 104
60
83.3 x 102
4.16 x 103
8.3 x 103
16.6 x 103
100
5 x 102
2.5 x 103
5 x 103
1 x 104
200
2.5 x 102
1.25 x 103
2.5 x 103
5 x 103
Increment
10 mPa s
100 mPa s
100 mPa s
100 mPa s

Manual
17
Characteristics of special spindles
Spindle
Shear rate (S. R.)
(Seg.-1)
Sample volume (cc)
TR8
0.93 x rpm
8.0
TR9
0.34 x rpm
10.5
TR10
0.28 x rpm
11.5
TR11
0.25 x rpm
13.0
The stated shear rates (S.R.) have been calculated based on the assumption that the fluids have
Newtonian characteristics.
10.2 Adapter for low-viscosity materials
Measurement range
Model V1L: 0.3* … 2000 mPa s/cP
Model V1R: 3.2* … 21333 mPa s/cP
*High rotational speeds required for very low-viscosity measurements can have a negative influence on
viscosity readings.
*Viscosity measurements have to be carried out under laminar flow conditions as turbulent flow conditions
can cause erroneously high viscosity values.
Description
An adapter for low viscosity materials is available as an accessory for precision spindles which rotate
within a sample container. To maintain an accurate temperature control, the sample container is located
within a water mantle. The adapter including the LCP spindle must be ordered separately. This spindle
enables low viscosity fluids to be analysed, giving accurate reproducible readings, including shear rates.
This accessory can be ordered in three variations:
Standard adapter
Adapter with a temperature sensor in the lower cap to enable direct temperature monitoring.
High temperature adapter. The test fluid’s temperature is controlled by immersing the container
into a temperature-controlled bath. The upper and lower caps of the sample container are made
of Teflon (PTFE), supporting temperatures of up to 200 °C.

Manual
18
Assembly
Remove the nut and the washer (1) from the rack (2).
Using the nut and the washer (1), fix the extension rod (3)
between the stand and the rack (2). The extension rod is
needed due to the length of the LCP adapters. Without the
extension rod, it would be difficult to attach the adapter to the
viscometer.
Using the screw (6), attach the water jacket (4) onto the rear
support (5).
Close the sample container (7) with the lower cap (8). Ensure
that it is sufficiently tight.
Fill the sample container (7). Be careful that there are not any
bubbles in the container. Use a large syringe to fill the
container. The sample amount needed is very small (18 ml).
Check the filling level. The spindle should be completely
covered to be the correct sample amount.
Hang the LCP spindle (9) onto the spindle hook (10). Attach the
hook to the screw (11).
Insert the spindle with the hook (10) and screw (11) into the
sample container.
Insert the sample container (7) into the water jacket (4) from
below.
Fix the sample container (7) in the water jacket (4). The groove
of the lower cap (12) has to be aligned with the fastening screw
(13) of the water jacket. Turn the sample container to do so.
Attach the upper cap (14). Make sure the spindle does not fall
into the sample container. Let the spindle lean on the upper
cap.
Using the provided screw (15), attach the rear support (5) to the
viscometer.

Manual
19
Selection table for PCE-RVI 2 V1L / V1R
V1L
V1R
Spindle
LCP
LCP
rpm
Viscosity in mPa s
0.3
2000.00
21333.00
0.5
1200.00
12800.00
0.6
1000.00
10666.00
1
600.00
6400.00
1.5
400.00
4266.00
2
300.00
3200.00
2.5
240.00
2560.00
3
200.00
2133.00
4
150.00
1600.00
5
120.00
1280.00
6
100.00
1066.00
10
60.00
640.00
12
50.00
533.00
20
30.00
320.00
30
20.00
213.00
50
12.00
128.00
60
10.00
106.00
100
6.00
64.00
200
3.00
32.00
Increment
0.01 mPa s
0.16 mPa s
Characteristics of special spindles:
Spindle
Shear rate (S. R.)
(Seg.-1)
Sample volume (cc)
LCP
1.224 x rpm
18
The stated shear rates (S.R.) have been calculated based on the assumption that the fluids have
Newtonian characteristics.
10.3 Adapter for spiral movements
Measurement range
Model V1L: 156* … 9400000 mPa s/cP
Model V1R: 1660* … 100000000 mPa s/cP
*High rotational speed for the measurement of low-viscosity values can have a negative influence on the
readings.
*Viscosity measurements have to be carried out under laminar conditions. Turbulent flow conditions can
cause erroneously high viscosity values.
Description
This adapter for analysing spiral movements enables comparative viscosity measurements in substances
that cannot be tested using the standard methods and spindles. It is particularly useful for testing creams,
gels, gelatine and other materials which do not flow easily.
The adapter for spiral movements consists of a motorised unit which causes the measuring head to move
vertically between two stopper rings. When one of the two stoppers is touched, the unit changes its
direction of movement automatically. This results in a spiral, corkscrew motion within the test substance,
without forming any cavities or channels within the material being tested.
The adapter is supplied with 6 T-type special spindles (PA, PB, PC, PD, PE, PF).

Manual
20
Assembly
Remove the nut and the washer from the rack (7).
Using the provided nut and washer, attach the rack (7) to the stand. The cogged side of the rack
has to be pointed towards the back of the stand.
Insert the rack into the security socket (1).
Use the lower stopper ring (2) to fix the rack to the security socket. Tighten it with the screw but
be careful that you do not screw too tight.
Attach the adapter for spiral movements to the rack and fix it with the sliding knob (3).
Using the screw, fix the upper stopper ring (5) onto the rack. Be careful not to screw too tight.
Level the device.