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Camlab CW8200 Manual

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Camlab CW8200

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Summary of Contents for Camlab CW8200

  • Page 1 Camlab CW8200...
  • Page 3 Safety precautions CAUTION Turbidity Standards and T-CAL Standards are formulated for chemical analysis and must not be used for any other purpose. Reagents must not get into the hands of children. Some of the reagents contain substances which are not entirely harmless environmentally.

  • Page 4: Table Of Contents

    Table of contents Part 1 Description ....................5 General description ...................6 Functional principle ...................7 Factory adjustment ....................7 Important notes ....................7 1.4.1 Guidelines for turbidity measurements ..............7 1.4.2 Cleaning of vials & Sampling vessels ..............8 Part 2 Operating manual ................9 Operating ......................10 2.1.1 Commissioning ....................10 2.1.2...
  • Page 5 2.3.6.1 T-CAL Standards - Correct Storage and Handling ..........19 2.3.7 Formazin-Standards - Preparation and Handling ..........20 2.3.7.1 Preparation of Dilution Water ................20 2.3.7.2 Preparation of 4000 NTU Formazin-stock solution ...........20 2.3.7.3 Preparation of dilutions from the 4000 NTU Formazin-stock solution ....21 2.3.8 Measurement techniques ................22 2.3.8.1...

  • Page 7: Part 1 Description

    Part 1 Descriptions...

  • Page 8: General Description

    Quality – Determination of Turbidity). The instrument works with rechargeable batteries as well as with mains. As soon as the CW8200 is connected with the adapter to the mains well as with mains. As soon as the CW8200 is connected with the adapter to the mains the batteries are charged.

  • Page 9: Factory Adjustment

    1.3 Factory adjustment The turbidimeter CW8200 is adjusted with Formazin Primary Standard at the factory and does not require user-calibration before use. See chapter 2.3.5 User-Calibration. 1.4 Important Notes 1.4.1 Guidelines for turbidity measurements a) Vials and caps should be cleaned thoroughly after each test to avoid influences.

  • Page 10: Cleaning Of Vials & Sampling Vessels

    1.4.2 Cleaning of vials & Sampling vessels Vials, caps and sampling vessels should be cleaned thoroughly after each test to avoid influ- ences. Minor residuals can cause errors. Residuals: According to the type of measured sample it is necessary to clean the vial with different cleaning operations.

  • Page 11: Part 2 Operating Manual

    Part 2 Operating manual...

  • Page 12: Operating

    – Important Notes, 2.1.3 Replacement of rechargeable batteries resp. Lithium battery. and 2.1.4 Charging the rechargeable batteries. Before using the CW8200 select language (mode 10), select mode 34 and perform “Delete Data”. Set date and time (see chapter 2. Instruments settings).

  • Page 13: Fuse

    2.1.5 Fuse The instrument has a fuse (E) (type: 1 A, inert, 20 mm). If an replacement is necessary proceed as described in “Replacement of rechargeable batteries resp. Lithium-battery". If the instrument can be operated with the mains adapter but not with the recharcheable batteries, the fuse could be defect (try new recharcheable batteries first).

  • Page 14: Overview Of Funktion Keys

    2.2 Overview of funktion keys 2.2.1 Overview Switch the instrument on or off Returning to previous menu Function key: description in the text if key available Function key: description in the text if key available Function key: description in the text if key available Confirming Mode Menu of instrument settings and further functions...

  • Page 15: User Countdown

    2.2.3 User-countdown With this function the operator is able to define his own countdown. Press [“clock”] key. 19:20:20 15.06.2006 The display shows time and date: Press [“clock”] key. Count-Down The display shows: mm : ss 99 : 99 Either press [ ] key to accept the last used user-count- down press one number key to start entering a new value The entering comprises two digits each.

  • Page 16: Operation Mode

    2.3 Operation mode Switch the instrument on by pressing the [ON/OFF] key. Autotest ... The instrument performs an electronic self-test. 2.3.1 Automatic switch off The instrument automatically switches off after 20 minutes. This is indicated 30 seconds before by a beeper. Press any key to avoid the instrument switching off. As long as the instrument is working (for example countdown or printing) the automatic switch off is inactive.

  • Page 17: Perform Turbidity Measurement

    2.3.2.3 Perform Turbidity measurement Accurate turbidity measurements depend on good, consistent measurement techniques. Including operation with clean samples vials in good condition and removing air bubbles. Samples should be measured immediately to prevent changes in sample characteristics due to temperature shifts and settling. Performance: Take a representative sample in a clean container.

  • Page 18: Storing Results

    Place the vial in the sample chamber making sure that the positioning is correct. Close the sample chamber with the cap. Read Read Press [Read / Avg] or [Read] key. 1.02 NTU 1.00 NTU The result is shown in the display in NTU. Remove the vial and clean it.

  • Page 19: Printing Results

    The data set is stored with date, time, Code-No. and test result. Stored! The display shows: The test result is then shown again. Note: Storage: 900 The display shows the number of free data sets. free records left Storage: If there are less than 30 data sets free the display shows: only 29 free records left Clear the memory as soon as possible (see chapter 2.4.4 Delete stored results).

  • Page 20: User-Calibration

    2.3.5 User-calibration 2.3.5.1 When to calibrate The turbidimeter was adjusted at the factory with Formazin Primary Standard and does not require user-calibration before use. As the electronical and optical design of this instrument provides long-term stability the need for frequent calibration is minimized. Perform calibration with T-CAL every 3 month or if required more often.

  • Page 21: Calibration Standards

    Read/ Press [Read / Avg] key. The Count-down starts. Count-Down After the Count-down is finished the reading starts 1:00 automatically. <NTU adjustment> store Press [ ] key to store. Pess [Esc] key to cancel the calibration. 2.3.6 Calibration Standards The T-CAL standards purchased with the instrument should be used to calibrate the instru- ment.

  • Page 22: Formazin-Standards - Preparation And Handling

    Preparing and Using Standards –infrequent use Note: These instructions apply to all standards excepted the <0.1 NTU standard. If you are using the <0.1 NTU standard follow the instructions above.These instructions apply to standards that have been sitting undisturbed for more than one week or to new standards. 1.

  • Page 23: Preparation Of Dilutions From The 4000Ntu Formazin-Stock Solution

    2.3.7.3 Preparation of dilutions from the 4000NTU Formazin- Stock solution Prepare the dilutions from a 4000 NTU Formazin stock solution and dilution water. Standard Step 1 Step 2 Step 3 20 NTU Add 100 ml of Pipette 1.00 ml Fill to the mark dilution water to well mixed 4000 with dilution water.

  • Page 24: Measurement Techniques

    2.3.8 Measurement techniques 2.3.8.1 Degassing - Removal of Bubbles If the Turbidity is low it is important to remove air bubbles from the sample using one, or a combination of the following methods: • Addition of a surfactant • Application of a partial vacuum •...

  • Page 25: Measurement Of High Turbidity Values

    2.3.8.2 Measurement of high turbidity values High turbidity samples with more than 1100 NTU "overrange" may be diluted. The dilution water should be a water with very low turbidity as described in chapter 2.3.7.1 "Preparing dilution water". For accurate dilution proceed as follows: Mix the water sample well and pipette x ml of the water sample (see table below) into a 100 ml volumetric flask.

  • Page 26: Indexing And Matching Sample Vials

    2.3.8.4 Indexing and matching sample vials Matched sample vials are required to minimize the effects of optical variation from vial to vial glass. Alternatively an indexed single sample vial can be used for every measurement. Once vial orientation in the sample chamber is located, always use this new orientation mark for all measurements independent of the white pre-printed triangle mark.

  • Page 27: Indexing A Set Of Sample Cells

    Read Read Press [Read/Avg] or [Read] key. or 1.02 NTU Note the displayed result. 1.00 NTU Rotate the vial in the sample chamber about 45°. Place the cover on the instrument. Read Read Press [Read/Avg] or [Read] key. Note the displayed result. 1.02 NTU 1.00 NTU Repeat this procedure until the smallest NTU value is...
  • Page 28 Rotate the vial in the sample chamber about 45°. Place the cover on the instrument. Press [Read / Avg] or [Read] key. Note the displayed result. Repeat this procedure as the smalest NTU value is reading. Mark the vial. Indexing more vials repeat point 1. to 12. for each vial. Repeat this procedure until the reading matches the first vial reading within ±...

  • Page 29: Photometer Settings

    2.4 Settings <MODE-Menü> Table of MODE-Functions Mode-Function Description Page Clock Setting date and time Delete data Deleting all stored results Key beep Switching the acoustic signal on/off to indicate key-pressing Language Selecting language LCD contrast Setting the display contrast Print Printing all stored results Print Code-No.

  • Page 30: Blank Because Of Technical Requirements

    2.4.1 blank because of technical requirements 2.4.2 Instrument basic settings 1 Selecting a language Mode Press [MODE] [1] [0] keys. Confirm with [ ] key. The display shows: <Language> Deutsch Press arrow key [ ] or [ ] to select the required language >>...
  • Page 31 Setting date and time Press [MODE] [1] [2] keys. Mode Confirm with [ ] key. The display shows: <Clock> yy-mm-dd hh:mm _ _-_ _-_ _ _ _:_ _ The entering comprises two digits each. Enter year, month and day, yy-mm-dd hh:mm 06-05-14 _ _:_ _...
  • Page 32 Signal-beep Performing a measurement takes several seconds. The instrument indicates the end of mea- suring by a short beep. Mode Press MODE [1] [4] keys. Confirm with [ ] key. <Signal-Beep> The display shows: ON: 1 OFF: 0 • Press [0] key to switch the signal-beep off. •...
  • Page 33 2.4.3 Printing of stored results Printing all results Press MODE [2] [0] keys. Mode Confirm with [ ] key. <Print> The display shows: Print all Data Start: cancel: Press [ ] key for printing out all stored test results. The display shows e.g.: Test No.: After printing the instrument goes back to mode menu automatically.
  • Page 34 Printing results of a selected time period Press MODE [2] [1] keys. Mode Confirm with [ ] key. The display shows: <Print> sorted: date Enter year, month and day for the first day of the required from yy-mm-dd period, e.g.: 14 Mai 2006 = [0][6][0][5][1][4] __-__-__ Confirm with [ ] key.
  • Page 35 Printing results of a selected Code-No. range Mode Press MODE [2] [2] keys. Confirm with [ ] key. <Print> The display shows: sorted: Code-No. from _ _ _ _ _ _ Enter numeric code number (up to 6 places) for the first required Code-No., e.g.: [1].
  • Page 36 Printing Parameter Press MODE [2] [9] keys. Mode Confirm with [ ] key. <printing parameter> 1: Flow control 2: Baud rate The display shows: cancel: Press [1] key to select ”Protocol”. <Flow Control> is: Hardware The display shows: select: [ ] [ ] save: cancel: Press arrow key [ ] or [ ] to select the required Protocol...

  • Page 37: Printing Of Stored Results

    Press arrow key [ ] or [ ] to select the required Baud rate. (600, 1200, 2400, 4800, 9600, 14400, 19200) Confirm with [ ] key. End with ESC key. Back to Mode-Menu with ESC key. Note: Select “Hardware” as Flow control and “9600” as Baud rate for using the printer DPN 2335.
  • Page 38 Recall results of a selected time period Press MODE [3] [1] keys. Mode Confirm with [ ] key. The display shows: <Storage> sorted: date Enter year, month and day for the for the first day of the from yy-mm-dd required period, e.g.: 14 Mai 2006 = [0][6][0][5][1][4] __-__-__ Confirm with [ ] key.
  • Page 39 Recall results of a selected Code-No. range Press MODE [3] [2] keys. Mode Confirm with [ ] key. The display shows: <Storage> sorted: Code-No. from _ _ _ _ _ _ Enter numeric code number (up to 6 places for the first required Code-No., e.g.: [1].
  • Page 40 Delete stored results Press MODE [3] [4] keys. Mode Confirm with [ ] key. <Delete data> The display shows: Delete all data? YES : 1 NO : 0 • Press [0] key to retain the data sets in memory. • After pressing key [1] the following acknowledgment is displayed: <Delete data>...

  • Page 41: 2.4.8 Blank Because Of Technical Requirements

    2.4.5 – 2.4.8 blank because of technical requirements 2.4.9 Instrument basic settings 2 Adjusting display contrast Press [MODE] [8] [0] keys. Mode Confirm with [ ] key. The display shows: <LCD Kontrast> • Press arow key [ ] to increase contrast of the LCD display.

  • Page 42: Data Transfer

    2.5 Data transfer Switch the instrument and the personal computer or printer off. Connect the instrument (RS232 interface) and the serial interface of the personal computer or printer using a cable in line with the specified assignment (see technical data). The cable for connection to a personal computer is included in delivery contents.

  • Page 43: Part 3 Enclosure

    Part 3 Enclosure...

  • Page 44: Unpacking

    3.1 Unpacking the instrument Carefully inspect all items to ensure that every part of the list below is present and no visible damage has occurred during shipment. If there is any damage or something is missing, please contact your local distributor immediately. 3.2 Delivery content Standard content of the Turbidimeter: 1 Turbidimeter in plastic case...

  • Page 45: Technical Data

    3.4 Technical data Display Graphic-Display (7-line, 21-characters) Serial Interface serial RS232 for printer- and PC-connection; 9-pin D-sub-mail connector, data format ASCII, 8-bit Data, no parity, 1 start-bit, 1 stop-bit, baud rate and protocol: adjustable Pin assignation: Pin 1 = free Pin 6 = free Pin 2 = Rx Data Pin 7 = RTS...

  • Page 46: Abbreviations

    3.5 Abbreviations Abbreviation Definition Read/Avg Signal Average function Nephelometric Turbidity Unit Formazine Turbidity Unit Formazine Nephelometric Units Formazine Attenuation Units ASBC American Society of Brewing Chemists European Brewery Convention mg/l Milligram per litre Parts per million...

  • Page 47: Trouble-Shooting

    3.6 Trouble-shooting 3.6.1 Operating messages in the display / error display Display Meaning Trouble shooting Overrange Reading is exceeding the range • If possible dilute sample. too much light on the photo • Cell chamber lid closed? cell. • Repeat measurement with closed lid.

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