Tamson Instruments TV2000 AKV User manual

Tamson Instruments bv, van 't Hoffstraat 12, 2665 JL Bleiswijk, Netherlands . [phone] Fax. [phone]
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MANUAL
TV2000 AKV
Automated
Kinematic
Viscosity

Tamson Instruments bv, van 't Hoffstraat 12, 2665 JL Bleiswijk, Netherlands . [phone] Fax. [phone]
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Safety and Warnings
Make sure you read and understand all instructions and safety precautions listed in this manual, before
installing or operating the equipment. If there are any questions concerning the operation of the equipment
or about the information in this manual please contact your local dealer or Tamson Instruments sales de-
partment first.
Performance of installation, operation, or maintenance other than those described in this manual may result
in a hazardous situation and may void the manufacturers warranty.
Never operate equipment that is not correctly installed. Unqualified personnel must not operate the equip-
ment. Avoid causing damage to the equipment or its accessories through incorrect operation.
Important:
-When performing service, maintenance or moving the apparatus, always disconnect the line cord of
the apparatus,
-Only well skilled and trained personnel are allowed to operate this equipment,
-Take notice of warning labels and do not remove them,
-Refer service and repairs to qualified technician,
-If a problem persists, call your supplier or Tamson Instruments B.V.
Warranty
Tamson Instruments B.V. warrants that all equipment manufactured by it shall be free from defects, in
material and workmanship, which might impair its usefulness. Tamson Instruments B.V. does not warrant
that the equipment is fit for any particular use. The manufacturer is only responsible for the security, reliabil-
ity and performance of the equipment, if the unit is operated in accordance with the operating instructions,
extensions, adjustments, changes and/or repair is only performed by Tamson Instruments B.V. or author-
ized persons. All equipment and materials are further subject to tolerances and variations consistent with
the usage of the trade.

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Contents
Safety and Warnings...............................................................................................2
Warranty ..................................................................................................................2
Contents ..................................................................................................................3
EC declaration of conformity thermostatic bath T-Series....................................6
Delivery checklist....................................................................................................7
Precautions and hazards........................................................................................8
Introduction to the TV-series..................................................................................8
Intended use...........................................................................................................................................8
General...................................................................................................................................................8
Construction ..........................................................................................................................................8
Safety systems.....................................................................................................................................9
Installation.............................................................................................................10
Important..............................................................................................................................................10
Unpacking and connecting .................................................................................................................10
Bath liquids.......................................................................................................................................... 10
Operating the bath ................................................................................................13
Password..............................................................................................................................................13
Adjusting set point ..............................................................................................................................14
Setting offset........................................................................................................................................14
Switching Celsius/Fahrenheit.............................................................................................................14
Setting power limit...............................................................................................................................15
Time constant ......................................................................................................................................15
Recalibrating controller....................................................................................................................... 15
Contrast................................................................................................................................................15
Backlight ..............................................................................................................................................16
AKV (Viscometer) manual.....................................................................................17
Setting up the viscometer unit............................................................................................................17
The AKV menu structure.....................................................................................................................18
How to select a viscometer...............................................................................................................18
Store new viscometer parameters....................................................................................................19
Delete a viscometer from memory....................................................................................................20
Entering a sample number................................................................................................................21
Print the stored viscometer parameters........................................................................................... 21
Setting a pre-heating time.................................................................................................................21
Setting the tube vacuum ...................................................................................................................22
Enter number of runs.........................................................................................................................23
Adjusting contrast .............................................................................................................................23
Adjusting sensitivity..........................................................................................................................23
Adjusting backlight............................................................................................................................24
Entering time and date ......................................................................................................................24
Replacing paper and ink ribbon.......................................................................................................... 24
RS232 communication.........................................................................................................................25
Preparation for measurement.............................................................................................................26
Precautions........................................................................................................................................ 26
Causes for incorrect measurement.................................................................................................. 26
The type of viscometer tube..............................................................................................................27
Cleaning of the glass viscometers ................................................................................................... 27
Preparation of the sample.................................................................................................................29

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Charging the viscometer tube...........................................................................................................30
Measurement...................................................................................................................................... 32
Connecting glass viscometer tube and measuring head................................................................ 34
Fluid trap ............................................................................................................................................35
Adjustment of the AKV-system before performing a run................................................................36
Start a single run..................................................................................................................................37
Measurement examples.......................................................................................................................40
Aborting a run......................................................................................................................................42
Trouble shooting...................................................................................................43
Bath control..........................................................................................................................................43
Bath error messages .........................................................................................................................43
Bath temperature does not become stable......................................................................................45
Problems with measuring head: bad repeatability............................................................................46
Problems with measuring head: bad detection................................................................................. 49
Errors on LC display............................................................................................................................49
Displays locked, Error LED on..........................................................................................................49
AKV Display shows “No vacuum” .................................................................................................... 49
AKV Display shows “Vacuum too low” ............................................................................................49
AKV Display shows “Visco not empty”............................................................................................50
AKV Display shows “Connect visco sensor” ..................................................................................50
AKV Display shows permanently “Waiting for timing mark 1”....................................................... 50
Trouble shooting the measuring head ............................................................................................. 51
Technical specifications.......................................................................................53
AKV-system.......................................................................................................................................... 53
Specifications bath (TV2000) ..............................................................................................................54
Technical Drawing: AKV Unit.............................................................................................................. 55
Technical Drawing: Thermostatic Bath..............................................................................................56
Accessories and spare parts ..............................................................................................................57
Viscometer tubes Ubbelohde and Cannon- Fenske........................................................................57
Ubbelohde viscometers available:....................................................................................................57
Cannon Fenske viscometers available:............................................................................................ 57
Indicating Thermometers ..................................................................................................................58
Spare parts list bath...........................................................................................................................59
Spare parts list AKV-system .............................................................................................................60
Spare parts list measuring head.......................................................................................................60
Spare partlist for fluid trap................................................................................................................60
DISCLAIMER..........................................................................................................60

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Tamson Instruments B.V.
van 't Hoffstraat 12
2665 JL Bleiswijk
The Netherlands
We wish to thank you for the purchase of this Tamson Thermostatic Bath. For a fast settlement of the one-
year warranty, please return this warranty certificate as soon as possible to the following fax number +31 10
522 43 73 or the above mentioned address.
Model Thermostatic bath : ………………………………………………………….
Name of your company : ………………………………………………………….
Name of user : ………………………………………………………….
Address : ………………………………………………………….
……….………………………………………………….
……….………………………………………………….
……….………………………………………………….
Tel. nr. : ……….………………………………………………….
Serial number : ……………………………….
Mains voltage: …………….. Mains Freq.: …………………Hz
Date of delivery : ……………..
Name of dealer: ……….………………………………………………….
……….………………………………………………….
………………………………….……………………….
Signature: …...………………………

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EC declaration of conformity thermostatic bath T-Series
Manufacturer: Tamson Instruments B.V.
van 't Hoffstraat
2665 JL Bleiswijk
The Netherlands
Product: Thermostatic bath
Model: TV2000 - AKV
The products to which this statement relates, is manufactured and dully carried out in compliance with the
provisions of Directive 89/392/EEC, 91/368, 93/44 EEG and 93/68 EEG on the approximation of the laws of
the Member States relating to electromagnetic compatibility.
The products are in conformity with the following specification:
EN 50081-1 : 1992
EN 50082-2 : 1995
EN 61000-3-2 : 1995
1 January 1996, Tamson Instruments bv, The Netherlands
Ing. R.C. van Hall
Director

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Delivery checklist
(For test result please see the separately added calibration certificate.)
Bath parameters:
Date
Operator
Bath type
TV2000 - AKV
Serial No
Power supply
230V
115V
50Hz
60Hz
Test Parameters:
Testing liquid
Testing Temperature
C
Reading with calibrated Thermometer (F250)
C
Offset used for correcting bath
C
Checklist:
Viscometer bath
Stability bath
Motorfuse tested
Fuses placed
Condition motor
Stirrer mechanism
Baffle plates
LED Board
Micro Processor print
Power supply board
Display print
Safety thermostat
Serial interface
AKV Module
Display print
Mains socket for vacuum pump
Vacuum valves
Printer
Measuring head
Tube connection(s)
Sensitivity

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Precautions and hazards
Read all parts of this manual carefully to insure smooth operation and avoiding damage to the equipment or
its accessories. If a malfunction occurs, consult chapter "Trouble shooting". If a problem persists, call your
supplier or TAMSON INSTRUMENTS b.v. Never operate the equipment if not correctly installed. Qualified
personnel must operate the equipment.
Introduction to the TV-series
The TAMSON model TV-baths are designed to perform a variety of accurate temperature control required
for general laboratory use or as a constant temperature bath. The TV-series is intended for temperature
control of applications requiring a high degree of stability over a broad temperature range. The robust
construction incluiding advanced safety features give the bath a range of wide application.
Intended use
The AKV system replicates the manual kinematic viscosity measurement method as described in ASTM D445. In the
AKV system both Ubbelohde tube or Cannon Fenske(CF) tubes can be used. Two measuring heads are available.
The procedure handles as follows:
- Choose Ubbelohde or CF tube (routine) in the range of the expected visosity.
- Fill the tube with sample.
- Pre heat measuring head and sample.
- Start measurement:
Sample is drawn up by vacuum into the Ubbelohde or CF tube,
When vacuum stops, gravity will pull the fluid down again,
The miniscus of the fluid is observed by the optical system,
The time the miniscus needs to lower over an calibrated distance is than measured,
From the tube constant and time follows the kinematic viscosity.
With some dark fluids a residue may remain on the inside of the glass capillary, which hides the samples' miniscus. If
such is the case with the sample, the D445 method and routine flow tubes can not be used to perform methods for
these types of samples. Instead reverse flow tubes should be used. These unfortunately are not available for the AKV
system. A sample can always be send to Tamson instruments to make sure the unit can be used for these specific
samples.
The AKV is capable of testing the same sample multiple times in a so called run. This makes calculation of repeatabil-
ity an easy job.
Due to it's accuracy measuring times can be shortenend by choosing larger glass capliary. Measurement times thus
can be shortened drastically. However be aware that this does not comply to ASTM D445. Also pre heating times of
sample (15 minutes) have to taken into acount for every new sample.
General
The heat input is controlled by a microprocessor system. A special optimized electronic temperature
measurement circuit ensures an extremely high degree of accuracy and reproducibility of operation
conditions. The baths feature as standard a RS232C interface for connection to a computer, data logger or
terminal. The baths have an integrated cooling coil as standard, for rapidly reducing bath temperature
alternatively for working at or below ambient temperature.
Construction
The system contains a thermostatic bath and measuring unit. The bath can be operated from the front
panel left from the bath window. The measuring system is located in the top of the apparatus and contains
a microprocessor controller board, a printer, an alpha-numeric LCD, a key panel with numeric and function
key, and the connections for the AKV measuring head.
The TAMSON baths are constructed entirely from corrosion-resistant materials –stainless steel and PTFE
–entirely. A thick layer of glass wool between the inner bath and outher casing ensure effective insulation

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against heat loss, resulting in relatively cool external at high operating temps. The central microprocessor
within the control module manages and controlls, the functions for temperature measuring regulation, pro-
gram storage, safety control and error coding. A circulation stirrer is built-in for uniform temperature distribu-
tion within the bath.
Temperature control and setting
The bath temperature is regulated using a Pt-100 temperature probe Class A connected to a
microprocessor module. The advanced electronic control system continually computes the energy input
required for optimal temperature accuracy and stability. The controller will activate the heaters partially or in
full, taking into account the difference between actual bath temperature and set point taking into account
the type of bath fluid used and working conditions. This process does not interfere electrically with other
equipment since all heating elements are switched in zero-cross mode. Through the application of an
especially developed inlet circuit for the temperature probe, the sensitivity to external interference has been
reduced to a minimum. The required temperature is set by means of membrane switches on the front panel.
Read-out is on a 2-line times 16-character display. An absolute temperature offset is provided with a
resolution of 0.01C. This fine-tuning can be carried out at any time during operation of the bath.
Safety systems
A number of precautions are provided to ensure a safe working of the bath and to protect the equipment,
the bath fluid, the samples immersed and the workplace. A mechanical excess-temperature thermostat will
automatically switch-off the entire bath when its maximum value is exceeded. The maximum temperature
can be manually adjusted from 50C up to 270C.
A thermal protection of the stirrer mechanism will switch off the motor in case of malfunction. Both
thermostat and motor-fuse can easily be accessed and reset on the front panel.
A large number of integral electronic safety checks will cause the bath to shut-down in case of electronic or
electrical error. Any kind of activated safety system will be attended with an acoustic and visible alarm. On
the front display operating faults or component failures, are reported as numbered ’errors’. In this way there
is a continual check of the proper functioning of the bath.

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Installation
Important
TAMSON INSTRUMENTS b.v. is not responsible in any way for consequential damage or harm caused by
using this bath.
1) Whilst cleaning, servicing or repairing always disconnect the bath from the mains (by unplugging the
power cord).
2) Well-trained and authorized persons may only carry out repairs on the electrical system of the bath.
Unpacking and connecting
Before leaving the factory Tamson baths are adequately packed to prevent damage during normal
transportation. Check the packing for external damage and make a note on the shipping documents if any
damage is found. Always retain the cartons and packing material until the bath has been tested and found
in good condition. (Transport companies generally will not honor a claim for damage if the respective
packing material is not available for examination).
The shipment contains at least the bath as mentioned in the delivery checklist. Further the consignment
might contain one or more viscometers, individually packed in small boxes with the calibration certificate
included in the box, as well as ASTM thermometers, thermometer holders etc. Please see packing list for
details concerning total contents of consignment.
Level the bath by using the adjustable feet.
Remove any remaining packing material from its interior before filling the bath. The interior of the bath can
be accessed by unscrewing the lid. Now the bath has to be filled with a liquid suitable for the maximum
operating temperature. It is very important to select a liquid with a viscosity of less than 20 cSt at the
operating temperature and a flash point which is well above the operating temperature.
Bath liquids
When the bath has been installed it must be filled with an appropriate liquid. When working with water the
bath should be filled to 1 cm below the lid. For oil the bath should be filled to not more than 5 cm below the
Caution
When operating at high temperatures the lid (of the bath), top plate and the window section of
the bath become very hot. Always use heat protective gloves. Care must be taken when placing or
removing material from the bath.
When changing the bath fluid from water to oil for operating at temperatures above 80C, com-
pletely remove all the water from the bath. Small drops of water may result in hazardous occur-
ingwhile reheating the bath with oil.
Water and oil must at all times be kept separate within the bath
Never mix oil and water in or around the bath
In order to avoid bath reporting erro or shutting down ensure a well earthed mains supply
which is clear of interference and able to carry the full load of the bath.