TQC Sheen CP1 Operating Manual
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TQC Sheen CP1 Operating Manual

Cone and plate viscometer
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C
P
V
ONE AND
LATE
ISCOMETER
Operating Manual
ISSUE 1

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  • Page 1 ONE AND LATE ISCOMETER Operating Manual ISSUE 1...

  • Page 2: Table Of Contents

    Contents Contents ..............................1 1 Safety Instructions ..........................2 2 Packing information ..........................3 3 Installation information ......................... 4 4 Introduction ............................5 5 Instrument Operation ........................... 8 6 Instrument Control ..........................10 7 Obtaining good results ........................35 8 Maintenance, cleaning and condition ....................38 9 Specification ............................

  • Page 3: Safety Instructions

    Safety Instructions 1. Read this operating manual carefully before using the machine. 2. Retain this operating manual for future reference. 3. Observe all safety and warning markings on the machine. 4. Always position the unit on a solid, level surface. 5.

  • Page 4: Packing Information

    Packing information The instrument is supplied with smaller items separately packed. Carefully open the top of the packaging before removing the instrument. 1. Identify all the items on the packing list. A copy of the packing list is provided below for reference. Remove the separate items on top. The instrument is protected by a plastic bag that includes desiccant sachets.

  • Page 5: Installation Information

    Installation information Please read all the relevant information before attempting installation. Ensure the instrument is situated on a firm, hard, level surface, strong enough to support its weight without significant vibration and in a well-ventilated area with adequate access to the front and sides. The bench height must allow easy access to the instrument and controls.

  • Page 6: Introduction

    Introduction The Cone and Plate Viscometer was originally designed and developed to measure the dynamic viscosity of paints that are non-Newtonian in behaviour. These types of materials exhibit different viscosities depending on the shear rate applied to them. Application of paints by brush, roller or spray gun, etc. generate shear which also changes viscosity.
  • Page 7 750 rpm. Using the same instrument on a 60Hz supply, will cause the motor to rotate at 900 rpm. The CP1 meets both these standards since the speed can be set to either 750 rpm or 900 rpm (independent of mains frequency).
  • Page 8 A time of 15 seconds is a good value for both preheat and run times for the CP1. Allow at least 30 seconds (with a hot cone) for the sample to stabilise at the higher temperatures; shorter times may be used at the low end of the temperature range.

  • Page 9: Instrument Operation

    Instrument Operation Using the cone for your viscosity range, turn the instrument on and allow the plate to reach the set temperature. After a short time the instrument will display ** Ready ** Ensure that the cone value is correctly set (see top right of LCD). The instrument is then available for use with the default settings supplied.
  • Page 10 Changing and inserting cones Fit a CP1 cone to the instrument as shown below – Overload Error The instrument measures the torque applied to the rotating cone and automatically halts (displaying an overload error) if the torque value exceeds the maximum allowed.

  • Page 11: Instrument Control

    Instrument Control The following sections describe the instrument controls and menu operation. Operating handle The handle moves the cone up and down. A sensor detects when the cone is lowered onto the plate. Operation may be set to manual or automatic (handle operated). Mains power socket A detachable power lead is provided.
  • Page 12 Auxiliary Start/Stop switch An additional start/stop (and spin) switch is located on the right-hand side of the base. This switch performs the same function as the bottom right-hand display switch. These switches may be used interchangeably to start and stop the instrument. The front panel also has a bi-colour LED that indicates the state of the instrument.
  • Page 13 The text displayed next to the three right-hand switches varies from display to display; pressing the switch next to the ‘soft-key’ will select the function displayed. Using the example above, pressing the top right key will select the instrument menu and the bottom right key will start the instrument.
  • Page 14 The Print key becomes visible once a result has been taken (manual mode only). Print (after result) is always enabled when the instrument is in automatic mode. Results are always printed in cP (mPas). Protective front covers slot into the holder on the front of the head. Use these to prevent contamination of the display;...
  • Page 15 About seconds later (after allowing the plate temperature to stabilise) the display will change to the one below (assuming the operating handle is up). The bottom right-hand key indicates that the cone can be rotated to aid cleaning (since the handle is up at this point). Alternatively, if the handle is down, the display will show Start instead of Spin against the bottom right-hand key.
  • Page 16 menu (top right) is used to access and set various operating parameters - for example, operating temperature. Once the instrument has been set to the required operating conditions, the menu will rarely need accessing. Pressing the menu key will produce the display shown below. The right arrow is initially positioned next to (highlighting) Batch.
  • Page 17 Pressing the Enter (bottom right key) will select the highlighted menu item. For example, if the key is pressed once more, Temperature will be highlighted and pressing the enter key will give (CP1 example) Each line can be selected using the up and down keys.
  • Page 18 The up and down keys can now be used to alter the set temperature. The up key will increase the value and the down key will decrease it. The top line indicates that the temperature can be set anywhere between 5 °C and 65 °C. As the up key is pressed, the new value increases.
  • Page 19 View Results This menu option allows any results from previous runs to be viewed. Up to 100 results are recorded. When the memory is full the oldest run will be overwritten. Selecting this option will show a display similar to the following screen, with the sample number followed by the result.
  • Page 20 This menu option sends all the stored results (always in cP/mPas) from all previous runs to an attached PC12. The exact format depends on the option selected (see options menu). Sample id This menu option allows the sample id to be set to any value between 0 and 999 (set to 316 here).
  • Page 21 Limits menu The following screen appears once the Limits menu has been selected. The top line shows that limits are currently on. This function is useful in batch mode in a production environment where a large number of samples are tested against a pre-set limit. The first two options, Limits on and Limits off allow limits to be turned on or off.
  • Page 22 Temperature menu CP1 temperature display The following screen appears once the CP1 Temperature menu has been selected. The top line shows the current set temperature. Use the keys to select one of the four pre-set values. Alternatively, the temperature may be set to any value between 5°C and 65°C in 0.1°C increments when the Other menu is selected (see the next section).
  • Page 23 changed. The main screen always shows the currently selected cone. A warning will appear on the display if the newly selected cone is not calibrated. Use the keys to select one of the five cones listed here as the current fitted cone. Run mode menu The following screen appears once the Run mode menu has been selected.
  • Page 24 starts the run. Raising (once the run has finished) and lowering the handle again will start another run. Raising the handle once the measurement is underway will halt the run. Note that the start key(s) will also halt the current run before it completes normally. This mode of operation is convenient when a large number of samples are to be tested and prevents paints and solvents being transferred to the front of the instrument.
  • Page 25 5 °C (or 240 °C). The top line displays the current setting. The values shown are for the CP1 (the values for the CP2 are shown in brackets). Use the keys to select one of the five options available.
  • Page 26 Use the keys to select one of the five options available. The Other menu allows any time between 5 and 59 seconds to be set (in 1 second increments). This time should always be at least 15 seconds. Settings menu A screen, similar to the following one, will appear once the Settings menu has been selected.
  • Page 27 standards) and 900 rpm in the USA (ASTM standard). Select the rotational speed required. Preferences menu The following screen appears once the Preferences menu has been selected. This menu allows various operating preferences to be set. There are more than 5 options; use the scroll keys to access the additional items.
  • Page 28 Decimals The following screen appears once the Decimals menu has been selected. This allows the displayed resolution to be set. This setting does not affect the data output. Spin after The following screen appears once the Spin after menu has been selected. The spin after option (when enabled) causes the cone to spin automatically after a run (2 seconds after the handle has been raised).
  • Page 29 Minimum The following screen appears once the Minimum menu has been selected. Once enabled, the minimum value during a run will be displayed on the result screen. Security The following screen appears once the Security menu has been selected. Two security modes are available.
  • Page 30 Once the instrument is in secure mode, other menu modes can be enabled/disabled by selecting Security and re-entering the code, 99 or 47. Note that both security modes are available at the same time with the highest security mode taking precedence.
  • Page 31 See the data format section for more details. Ready band The following screen appears once the Ready band menu has been selected. This allows the ready band temperature for the instrument to be set. The ready band temperature defines the band (either side of the set point) in which the instrument can be used.
  • Page 32 Temperature menu has been selected (after the correct security code has been entered). CP1 temperature calibration screen If you work at one or near one of these 3 temperatures, it is only necessary to calibrate the instrument at that temperature. Measurement at any other temperature requires temperature calibration either side of the working temperature –...
  • Page 33 There are 5 possible cones to choose from. Each cone is calibrated separately with 5 oils at a temperature of 25°C for the CP1 (temperature is set automatically during the calibration process). Separate instructions screens follow to lead you through the calibration process - read and follow the instructions on each screen.
  • Page 34  Oil contamination  Incorrect volume used  Incorrect cone used (may or may not calibrate successfully) The currently selected viscosity units are used to change the calibration oil values. Calibration options The instrument is normally calibrated with a 20 second run-time. Other calibration run- times can be set by selecting the options menu.
  • Page 35 The option is used to set the system time and date.

  • Page 36: Obtaining Good Results

    Obtaining good results The Sheen Cone & Plate will give accurate and repeatable results provided a few simple precautions are observed:  Always ensure that the cone and plate are clean and free from damage  Always allow enough time for the cone and sample to reach thermal equilibrium before starting the run ...
  • Page 37 Measurement accuracy and repeatability The measurement accuracy depends on the factors listed above. The figures quoted below assume the instrument is used within the normal calibrated range. Useful cone ranges and the sample volumes are shown below: For a given set of operating conditions, repeatability is ±0.5%, assuming the same sample volume is used every time.
  • Page 38 60 °C, it will take some time for the temperature to be changed and the plate to cool. The instrument contains a means of disabling the heating/cooling system at start-up 1. Before switching on, press the start button on the base of the instrument 2.

  • Page 39: Maintenance, Cleaning And Condition

    Check the instrument, cone and plate for wear or damage. Yearly CP1 must be serviced and calibrated by a trained and qualified service engineer. Cleaning Take care to only do this after the mains cable has been removed from the instrument.
  • Page 40 Switch the instrument off and remove the mains cable from the rear of the instrument. The fuse holder is located on the mains power-inlet. Carefully release the holder (use a small screwdriver) and gently pull the fuse housing outwards. Remove and replace the fuse with the exact equivalent 2A (T) Antisurge. Gently push the fuse holder into its housing and reconnect the instrument.

  • Page 41: Specification

    Specification INSTRUMENT DETAILS: CP1 Plate temperature 5°C (or maximum of 20°C below ambient) to 65°C (in 0.1°C steps) Temperature resolution ±0.1 °C CP1 temperature control ±0.1 °C (calibrated) CP1 temperature accuracy ±0.1°C (calibrated) Unspecified when less than 15 °C above ambient...
  • Page 42 DIMENSIONS AND WEIGHT: Dimensions 350 x 300 555 mm (h x w x d) Weight: 15kg approximately Fuse: 2A (T) 230V Antisurge Standards: The instrument has been designed for use in accordance with National Standards Methods of Test BS3900: Part A7, ISO 2884-1 and ASTM D4287-00. It is highly recommended that the respective standard methods of test are obtained in order that samples are prepared and tested under the specified conditions, thus the results can be compared with similar sampling carried out by other operators on similar...

  • Page 43: Operational Accessories

    Operational accessories Replacement cones (supplied without calibration oils) Calibration oils (25°C) – nominal values...
  • Page 44 This material is copyrighted by TQC Sheen and may not be reproduced in whole or in part by any means of information storage, retrieval, or reproduction without written permission from TQC Sheen Copyright © 2018 TQC Sheen TQC SHEEN Molenbaan 19...

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