ADP220 ADS220 POLARIMETER SACCHARIMETER. Bellingham + Stanley Limited OPERATORS MANUAL

Transcription

1 ADP220 POLARIMETER ADS220 SACCHARIMETER OPERATORS MANUAL Bellingham + Stanley Limited

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3 OPERATORS MANUAL: ISSUE 3.1 FEBRUARY 2004 MANUAL CODE: This manual is applicable to ADP220 polarimeters and ADS220 saccharimeters fitted with the following software:- ADP Version 13, 14, 15, 16, 17 ADS Version 3, 4, 5, 6, 7, 8 To display the code number of the software actually fitted, see page 3-1. Trademark Acknowledgements Epson, ESC/P are trademarks of Seiko Epson Corporation IBM and IBM PC are trademarks of International Business Machines Corporation Datac is a trademark of Datac plc Centronics is a trademark of Centronics Data Computer Corporation Genklene and Arklone are trademarks of ICI Chemicals & Polymers Limited Windows is a trademark of Microsoft Corporation Copyright BELLINGHAM & STANLEY Ltd All efforts have been made to ensure the accuracy of the contents of this manual. However, Bellingham & Stanley Ltd. can assume no responsibility for any errors contained in the manual or their consequences. Printed in United Kingdom Bellingham & Stanley Ltd. Longfield Road, North Farm Industrial Estate, TUNBRIDGE WELLS, United Kingdom. TN2 3EY Telephone: Fax: Bellingham & Stanley Inc Hurricane Shoals Road, Bldg D. Suite 300 LAWRENCEVILLE, USA GA30043 Telephone: Fax:

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5 DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN Manufacturer s Name Manufacturer s Address Bellingham & Stanley Limited Longfield Road, North Farm Industrial Estate, Tunbridge Wells, Kent TN2 3EY United Kingdom declares that the product Product Name ADP220 Automatic polarimeter ADS220 Automatic saccharimeter Model Number 36-20, Product Options All conforms to the following Product Specifications: Safety EMC IEC950:1991 EN Emissions EN55022 : Radiated Emissions to Class A EN55022 : Conducted Emissions to Class A EN Generic Immunity IEC : 1984 Electrostatic Discharge - Class 3, 8 KV IEC : 1984 Radio Frequency Susceptibility - Class 2, 3V/m IEC : 1988 Fast Burst Transients - Class 2, 1KV Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC.

6 O P E R A T O R S M A N U A L Contents Installation 1 Basic Operation 2 A Tour of the Instrument 2-1 Measuring a Sample 2-3 Setting the Measurement Mode 2-5 Sampling Techniques 2-9 Temperature Control and Compensation 2-10 Setting Up the System 3 Passwords 3-1 Calibration 3-2 Configuration 3-3 User Defined Temperature Compensation 3-9 User Defined Scales (ADP220 only) 3-10 Purity Settings & Operation (ADS220 only) 3-12 ADP Key Function Map 3-ADP ADS Key Function Map 3-ADS Error Conditions & Messages 4 Specification 5 Spares & Accessories 6 Spare Parts 6-1 CONTENTS

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8 S E C T I O N 1 Installation Unpacking 1-1 Contents List 1-1 Part Numbers 1-1 Positioning the System 1-1 Mains Connection 1-2 Power Supply Adaptor 1-2 INSTALLATION 1

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10 UNPACKING Carefully remove all of the packing material. It is recommended that the box and other packing materials are retained so that, should the need arise, the instrument can be safely returned to the manufacturer. Check that all parts listed below are present and that no transit damage has occurred. If any are damaged or missing then contact the supplier immediately. CONTENTS LIST 1 Remote Temperature Sensor, Power Supply Unit, Mains Lead, see below for part no. 1 Operators Manual, mm centre filling sample tube, ADP220 only 1 ADP220 Polarimeter, ADS220 only 1 ADS220 Saccharimeter, PART NUMBERS Description ADP220 comprising Main instrument ADS220 comprising Main instrument Part number UK Version 230V Euro Version 230V US Version 110V Mains lead (for ) POSITIONING THE SYSTEM Place the instrument on a flat and stable bench that is:- * dry and indoors * away from draughty or hot equipment like fans or heaters * out of direct sunlight or strong ambient light * away from potential sources of interference such as RFI generating equipment * within easy reach of a power point * not using a power circuit that also has large motors or noisegenerating equipment connected to it. INSTALLATION 1-1

11 MAINS CONNECTION The power supply adaptor is supplied with a moulded mains lead which has a plug to suit one of several socket types:- UK EU US 13 Amp square pin to BS1363/A European Schuko plug 3 pin American plug Mains cord wire colours LINE (PHASE) NEUTRAL (RETURN) EARTH (GROUND) UK (230V) brown blue green/yellow EU (230V) brown blue green/yellow US (110V) black white green This power supply must be earthed. Earth terminal is used for functional earth only. POWER SUPPLY ADAPTER WARNING: * For indoor use only. * Must be kept dry. * No user serviceable parts inside. * Do not open. * Do not cover, designed to operate with free air convection. * No cleaning required. 1-2 INSTALLATION

12 S E C T I O N 2 Basic Operation A Tour of the Instrument 2-1 Operators Panel 2-1 System Reset 2-1 Temperature Measurement 2-2 Power Supply 2-2 Services Panel 2-2 Entering a Number 2-2 Measuring a Sample 2-3 Reading 2-3 Zeroing 2-3 Print 2-4 Setting the Measurement Mode 2-5 Entering a Password 2-5 Selecting a Scale 2-5 Setting a Multiplication factor 2-6 Setting the Temperature Compensation 2-6 Angular degree range (ADP220 only) 2-7 Sampling Techniques 2-9 Cleaning 2-9 Sample Application 2-9 Specific Rotation 2-9 Temperature Control and Compensation 2-10 Why Monitor the Temperature? 2-10 BASIC OPERATION 2

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14 A Tour of the Instrument The ADP220 polarimeter is a self-contained, general purpose, fully automatic polarimeter suitable for measuring the rotation of optically active samples. It is housed in a rigid polyurethane foam moulded case which is light in weight whilst being extremely rugged and has a high resistance to chemical attack from the majority of commonly used samples. It incorporates a range of measurement scales and other facilities which are accessed via a simple and user-friendly operators panel. The ADS220 saccharimeter is similar in construction to the ADP220 but is specifically tailored to suit the measurement of sugar solutions including the calculation of sugar purity with the use of a refractometer. OPERATORS PANEL The reading display is purely numeric and is formed from large, high contrast digits. The functions of the four "soft keys" are shown on the upper line of the alpha-numeric display and provide access to all of the instrument control and data options. The lower line of the alphanumeric display and the numeric keys provide a means of entering and displaying prompts and data. SYSTEM RESET Pressing the two outermost softkeys together is referred to as SYSTEM RESET and will reset the instrument back to a starting condition, as if it had just been switched on. If at any time the instrument fails to respond to the softkeys or produces nonsensical data it may be restarted by pressing SYSTEM RESET or by turning the power off then on. Use of SYSTEM RESET is also a valid method of terminating lengthy operations, should the operator so desire. BASIC OPERATION 2-1

15 TEMPERATURE MEASUREMENT All models are fitted with the "chamber" temperature sensor probe in the reading chamber and have a separate "sample" temperature sensor probe which can be placed in a "centre filling" sample tube. Either the chamber, or the sample, sensor probe can be pre-selected to be used for display and temperature compensation. See page 3-6. POWER SUPPLY Power for the instruments is supplied from an external adaptor which is not sealed against the ingress of moisture and should be kept dry and away from damp areas at all times. SERVICES PANEL The service panel can be found mounted on the rear face of the instrument, which contains the following: - ON/OFF switch - Power supply connector - RS232C serial port (to output data to a printer or computer) - Refractometer port (used on the ADS to input brix data from an RFM refractometer) - Parallel printer port - Sample temperature probe connector ENTERING A NUMBER This instrument will accept numeric input in either fixed decimal point format, e.g or in scientific notation as 1.234E2. One of the softkeys (second from left) gives access to the minus (-), decimal point (.) and exponent (E) symbols that will be required to enter both numerical formats. As the operator enters the number the instrument responds to the key strokes by changing the symbol that the soft-key offers. If an error is made while entering the number the operator may use the CLEAR soft-key to erase the entry. The ENTER soft-key is available throughout the process and may be pressed at any time to accept the entry. Note that if the number being entered is negative, then press the minus soft-key before entering the number. Otherwise, if the number is less than 1, then press 0 first to show the decimal point soft-key. 2-2 BASIC OPERATION

16 Measuring a Sample Before switching on, ensure that there is not a sample tube or quartz control plate in the measurement chamber. After switching on the instrument the Reading Display will be blank and the information display will show the reading and temperature modes. The instrument will only start taking readings when the reading mechanism has reached operating speed; this will only take approximately half a minute. In order to take accurate readings, allow 30 minutes for the instrument to stabilise, as specified in ICUMSA procedures. READING Fill a sample tube with your sample. Lift open the chamber cover and place the tube on the two rails. The instrument will now start taking readings continually. You should notice that the reading fluctuates as it settles. Note the wave symbol on the bottom line. There are 3 reading status modes, all of which are displayed in the middle of the display on the bottom line. The cross symbolises that the reading displayed has no meaning, mainly caused because the light path is being blocked or because the reading mechanism has not reached its operating speed. The wave symbol is displayed when the reading is stabilising. The length of time for the reading to stabilise will depend on the setting of the reading response parameter. The tick is displayed when the reading has stabilised. The displayed results will now be correct. Whilst the instrument is taking readings, it will also be updating both the temperature and o.d. (optical density) results. ZEROING Take a clean empty sample tube and place in the chamber. Wait for the instrument to stabilise, using the reading status symbol as a guide. When stable press ZERO. The displayed reading will now change to BASIC OPERATION 2-3

17 PRINT If an optional printer is connected, the reading may now be recorded by pressing the PRINT key. The reading value is accompanied by scale identification codes and additional data depending upon the instrument settings. Typical printouts are shown below. 2-4 BASIC OPERATION

18 Setting the Measurement Mode ENTERING A PASSWORD The ADP220 polarimeter and ADS220 saccharimeter have 2 user defined passwords. The "operator" password allows access to the MODE functions only and the "supervisor" which provides unrestricted operation of all MODE and SETUP functions. After pressing MODE the user is prompted to enter the password. The first three keystrokes will be accepted and, if found to match the password, will allow the user to continue. If the password is incorrect the Key Function Display will return to the initial options. See "Setting Up The System", page 3-1, for details of how to change (or cancel) the passwords. Note : The password entry screen is not shown in subsequent keypress diagrams SELECTING A SCALE First press MODE then repeatedly pressing SCALE will step through the available measurement scales. The ADP220 has 2 scales, a and z that are always in the list and in addition, any of five user defined scales can be included. The ADS220 has the 2 standard scales and a pu scale which is used to initiate the sugar purity mode. u1, u2, u3, u4 & u5 can be set by the operator to specific product units. See page 3-10 for more details. a angular degree Note 1 z international sugar scale (ISS) ADP220 u1 user defined scale 1 u2 user defined scale 2 u3 user defined scale 3 u4 user defined scale 4 u5 user defined scale 5 ADS220 pu sugar purity calculation mode Note 1: The default reading range for the a scale is -85 to +85. If the a scale is selected on an ADP220 and QUIT is pressed from the MODE menu the instrument will request a reading range. Pressing SLCT will select the default range. If it is necessary to change this range see "ANGULAR DEGREE RANGE" later in this section. BASIC OPERATION 2-5

19 SETTING A MULTIPLICATION FACTOR First press MODE then press MLTPY. The user will be requested to enter a multiplication factor. This factor will be multiplied with the measurement reading, to create the displayed reading. Example If you are using a 100mm length sample tube but want to display the equivalent reading result for a 200mm length tube, then enter a multiplication factor of 2. Note : If the multiplication factor has been set to any value other than 1, an "x" will be displayed just after the scale identification code. See "Entering a Number", page 2-2, for details of how to enter numbers. SETTING THE TEMPERATURE COMPENSATION First press MODE, then repeatedly pressing TC will step through the 4 temperature compensation modes. nc qc sc uc no compensation quartz temperature compensation sugar temperature compensation user defined temperature compensation Note 1 Note 1: See page 3-9 for detail on setting the user defined temperature compensation constant. 2-6 BASIC OPERATION

20 ANGULAR DEGREE RANGE (ADP220 Only) The Range setting is only available when the angular degree scale ( a) is selected. The default range for the a scale is -85 to +85. Other possible ranges are: to to to to to to to +355 In order to select the range go to the MODE menu by pressing MODE. If a is already selected press SCALE once followed by QUIT. The range setting will now be displayed. If the scale is not a simply select it and press QUIT. All polarimeters measure the amount of rotation of a plane of polarised light and so it is only possible for the instrument to detect the position of the rotated light beam over a 180 span. As shown in the diagrams below, the plane of light leaving a sample with a rotation of +110 is exactly the same as that from a sample with a rotation of -70. Therefore, a sample with a rotation of +110 will display -70 on the default range. 0 Rotation +110 Rotation -70 Rotation If the user is aware that the sample to be measured should have a rotation greater than +85 then the correct value can be calculated from Displayed Rotation Alternatively, if the +5 to +175 (or the +95 to ) scale is selected, then the correct rotation will be displayed. If, in the above example, the user is unsure whether the correct rotation is -70 or +110, then an additional measurement should be taken with a different length of tube (e.g. half the length of the first tube). If the original true rotation was -70 then the second reading will be -35. Otherwise, if the original rotation was +110, then the second reading will be +55. If any range other than -85 to +85 is selected, then a "+" will be displayed on the lower display immediately after the a scale identifier code, i.e. " a+". If a Multiplication factor other than 1 has also been selected (see page 2-6), then the scale code will be shown as " a*". BASIC OPERATION 2-7

21 With an empty sample tube and, therefore, no rotation, the reading will be displayed as "0.00", "180.00" or"---.--" depending on which range has been selected. After the ZERO key has been pressed, the display will temporarily show "0.00" and then revert to one of the displays shown above. 2-8 BASIC OPERATION

22 Sampling Techniques In order to achieve the maximum performance from the ADP220 Series polarimeter and ADS220 Series saccharimeter, it is essential that extreme care is taken when cleaning the sample tubes and applying the sample to the tube. Temperature stabilisation can cause drifting of the reading unless care is taken. CLEANING Always clean the sample tube thoroughly, making sure that there are no traces of a previous sample which could dissolve into the later sample. First empty the sample tube at one end by removing one of the end caps. Next fill the sample tube from the open end so to dilute any of the sample. Rinse out the tube making sure to rinse the centre filling shaft. Allow the water to drain and then leave to dry. If using an oil based sample substitute methylated spirits for water. Rinsing with methylated spirits is better than water as it evaporates faster. NEVER use acetone, white spirit, Genklene, Arklone or any abrasive cleansers on any painted surface or, particularly, the membrane keypad panel. SAMPLE APPLICATION SPECIFIC ROTATION First take a clean assembled sample tube and zero the instrument with that tube. Then take out the tube and slowly pour in the sample. The tube should be filled up to a point where the sample reaches half way up the centre filling shaft. Finally visually check that there are no bubbles at the end caps. The specific rotation for a sample can be determined by using the equation shown below. where: is the specific rotation in angular degrees per dm and per g/cm3, at 20 C and measured using a sodium D light source is the optical rotation in angular degrees at 20 C and measured using a sodium D light source is the concentration of sucrose in g/cm3 is the length of the polarimeter tube in dm The International Commission for Uniform Methods of Sugar Analysis (ICUMSA) have fixed values that should be used when working to the International Sugar Scale (ISS). = g/cm3 = g/ cm3 = dm = mm BASIC OPERATION 2-9

23 Temperature Control and Compensation WHY MONITOR THE TEMPERATURE? As the optical rotation of liquids varies with temperature, it is important that the temperature of the sample is monitored or controlled. The temperature coefficient of sugar solutions is small but can be corrected by selecting sc temperature compensation. The compensation calculations can either be based on the temperature of the chamber temperature sensor or on the remote sample sensor which can be fitted into a "centre filling" sample tube with the tip of the sensor actually touching the sample. Similarly, the temperature coefficient of quartz control plates can be corrected for when by selecting qc temperature compensation. Some other samples may have more significant temperature coefficients and so the temperature should be monitored and corrections made to the displayed readings. The User Defined Temperature Compensation mode enables the instrument to automatically correct for samples other than sucrose and Quartz Control Plates with known temperature coefficients. (see page 3-9 for further details). Alternatively, a water jacketed sample tube can be used and connected to a water bath or circulator to accurately control the measurement temperature BASIC OPERATION

24 S E C T I O N 3 Setting Up the System The QUIT soft-key can be used at any time during the following operations to return to the initial soft-key options (Setup, Mode, Zero, Print), or to cancel the current operation. Passwords 3-1 Entering the Password 3-1 Change Passwords 3-1 Display the Software version 3-1 Calibration 3-2 Set Span 3-2 Configuration 3-3 Display Resolution 3-3 Reading Response 3-3 Alter RS232 (ADP220 only) 3-4 Remote Operation (ADP220 only) 3-4 Batch & Operator Codes 3-5 Select Temperature Probe for Compensation 3-6 Select Temperature Display Scale 3-6 Setting the Clock 3-7 Changing the Date Format 3-7 Select a Printer Type 3-8 Select Printer Port 3-8 User Defined Temperature Compensation 3-9 Setting the User Defined Temperature Coefficient Constant 3-9 Selecting the User Defined Temperature Compensation Mode 3-9 User Defined Scales (ADP220 only) 3-10 Create a Special User Defined Scale 3-10 Cancel a User Defined Scale 3-11 Purity Settings & Operation (ADS220 only) 3-12 Purity Format 3-12 Purity Constant 3-13 Refractometer Type 3-13 Connecting an RFM Refractometer 3-13 Switching to Purity Mode 3-14 Calculating Purity Values 3-14 ADP Key Function Map ADS Key Function Map 3-ADP 3-ADS SETTING UP THE SYSTEM 3

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26 Passwords All of the setting up functions described in this section are accessed by pressing the SETUP key, following which, the operator will be prompted to enter a password. There are 2 passwords in the ADP220 and ADS220 Series instruments; the "operator" password and the "supervisor" password. The "operator" password allows access to the MODE functions only and the "supervisor" which provides unrestricted operation of all MODE and SETUP functions. Each password is a 3 digit number in the range 001 to 255 and is initially set as follows:- "Operator" 123 "Supervisor" 135 ENTERING THE PASSWORD After pressing SETUP the user is prompted to enter the password. The first three keystrokes will be accepted and, if found to match the password, will allow the user to continue. If the password is incorrect the Key Function Display will return to the initial options. Note : The password entry screen is not shown in subsequent keypress diagrams CHANGE PASSWORDS The "operator" and "supervisor" passwords can be changed to any three digit numbers in the range 001 to 255. The first three keystrokes will be accepted; if an incorrect key is pressed, QUIT and start again. Setting the "operator" password to 000 will give unrestricted access to the MODE functions and the "Key in password:" screen will not be displayed after pressing MODE. Setting the "supervisor" password to 000 will give unrestricted access to both the MODE & SETUP functions and the "Key in password:" screen will not be displayed after pressing MODE or SETUP. CAUTION! Access to the MODE & SETUP functions is only possible by entering the passwords. DO NOT FORGET THEM! In the event of passwords being forgotten contact Bellingham & Stanley Service Department for assistance. DISPLAY THE SOFTWARE VERSION This keypress sequence will show the software version on the lower line of the display in the form:- Prog: ADP Where is the software code 13 is the software version SETTING UP THE SYSTEM 3-1

27 Calibration The ADP220 and ADS220 instruments have two calibration adjustments. As described in section 2, ZERO corrects the calibration for day to day minor variations. This should be carried out simply with an empty tube and, as such, can be performed at regular intervals; even before every new sample measurement. The instruments also have a calibration span facility which can be used to check and, if necessary, correct the high end of the reading range using a Quartz Control Plate, an accurately prepared sugar solution or other sample of known value. SET SPAN Place the sample into the sample chamber and close the lid. Press ENTER to calibrate at the default value displayed or key in the actual sample value. Continuous readings will be taken until stable and then the calibration will be corrected to the new value. Notes: 1. The span facility is only available with certain scales and ranges. The ADP220 will not span if degrees angular is selected with a range other than -85 to +85. The ADS220 will not span if the purity calculation scale is selected. The instrument will display "Invalid scale" or "Invalid range" when CALIB is pressed and will disable the SPAN facility. Press QUIT to return back to the setup menu. 2. The span facility does not use the multiplication factor, so the actual value of the sample must be entered. 3. Should the span facility be used with an empty chamber the instrument will show very erratic readings until the instrument is either re-spanned or the span is reset. Should a sample of a known value not be available the instrument can be returned to the factory span value by defaulting the span setting (see section 4-2). 3-2 SETTING UP THE SYSTEM

28 Configuration DISPLAY RESOLUTION First press SETUP, CONFIG & DSPLY, then repeatedly pressing RESOL alternately selects... and lo hi The resolution of the measurement reading both on the display and to the printer will be as shown in the table. Reading Resolution lo hi READING RESPONSE First press SETUP, CONFIG & DSPLY, then repeatedly pressing RESPN alternately selects... and slow fast The response setting will determine the length of time for the reading averaging, so fast will come to a reading quicker but might fluctuate. A slow response will take longer to settle but should give more stable results, particulary on high resolution scales such as z. SETTING UP THE SYSTEM 3-3

29 ALTER RS232 (ADP220 Only) There is an RS232C serial interface port on the instrument rear panel. The RS232C baud rate and data word structure can be set by selecting ALTER RS232. There are three baud rates available, 300, 1200 & 9600, and two word structures, either 7 bit with even parity or 8 bit with no parity. There is also a CR or CR-LF filter. There is a combined XON/XOFF software and DSR/DTR type hardware handshake control system with connections on the D type 9way connector as shown in the table below. 9way D plug pin no. Description Direction way plug pin no. 25way skt pin no way skt pin no. 2 Receive data in Transmitted data out DTR out Signal Ground DSR in The serial port can be used for sending data to a printer or for communication with a remote computer. Interconnecting lead part no is suitable for connection to a printer and, when used in conjunction with interface adaptors part no , for connection to an IBM PC or equivalent. REMOTE OPERATION (ADP220 Only) The serial port can be used for remote operation. Sending a <CR> (ascii 13) will initiate a reading and return a string as shown below: aq Ok 25.0 C 0.0 (reading) (scale) (reading status) (selected temperature) (od) Other functions are available for specific applications. B+S for further details. Please contact The "ADP220 Utility Program" code number can also be used for remote operation and data logging. 3-4 SETTING UP THE SYSTEM

30 BATCH & OPERATOR CODES As well as being defined by the date and time, a printed reading can also be identified by two code numbers; the Batch code which is a 6 digit number and the Operator code which is 2 digits. Initially, both codes are inhibited from operation but either can be selected by entering BatOp numbers as follows:- 0 No Batch or Operator 1 Batch code only 2 Operator code only 3 Batch & Operator codes Other numbers could give unexpected results and so should not be entered. When PRINT is pressed, you will be requested to enter a Batch code and then an Operator code. If ENTER is pressed without pressing number keys, then the codes will be printed as and 0. SETTING UP THE SYSTEM 3-5

31 SELECT TEMPERATURE PROBE FOR COMPENSATION Allows selection of either the "sample" temperature probe or the "chamber" temperature probe (mounted internally in the measurement chamber) for display of temperature and temperature compensation of the reading if selected. Pressing ACTIV alternately selects... and chmbr sampl A c or s is shown after the temperature on the lower line of the display to indicate which probe is in use. SELECT TEMPERATURE DISPLAY SCALE Measured temperatures can be displayed in either the Celsius or Fahrenheit scales. Pressing the SCALE button alternates between the two scales. and cels fahr The temperature scale can be identified by the character adjacent to the temperature. Celsius Fahrenheit 3-6 SETTING UP THE SYSTEM

32 SETTING THE CLOCK This option allows the user to alter the current date and time held by the system s real-timeclock. CHANGING THE DATE FORMAT This option gives the user the choice of either displaying the date using the European format of DD-MM-YY (day-month-year) or American format of MM-DD-YY (month-day-year). SETTING UP THE SYSTEM 3-7

33 SELECT A PRINTER TYPE Both the ADP220 and ADS220 instruments can send reading data to a printer. The ADS220 requires a printer with at least 40 columns across the page but the ADP220 can also be formatted for a narrower, 24 column printer. Both instruments have the option to select "no printer". In this case the PRINT button will not be displayed. The "printer type" can be set to... none 24 column (ADP Only) or 40+ column none will disable the printer output and should be selected if a printer will not be used. 24 column should be selected if a Datac 24 column printer (B&S code 55-02U) or similar is to be used. If the printer has a print width of 40 or more columns, then select 40+ column. The printout formats vary depending on the instruments setup and the printer type selected. SELECT PRINTER PORT Both the ADP220 and ADS220 have the option to redirect the printed outputs to one of two ports. Pressing the PORT button will alternate the "printer port" option between... Serial 1 and Parallel 3-8 SETTING UP THE SYSTEM

34 User Defined Temperature Compensation The ADP220 and ADS220 both incorporate a User Defined Temperature Compensation mode. It enables the instrument to automatically correct for samples other than sucrose and Quartz Control Plates with known temperature coefficients. Temperature corrections are made using the following linear equation. where r = displayed corrected reading x = uncorrected reading in Selected Scale Units A = sample temperature coefficient in Selected Scale Units / C t = temperature of active probe in C Note: The entered coefficient must be in the same units as the selected scale. SETTING THE USER DEFINED TEMPERATURE COEFFICIENT CONSTANT The entered coefficient constant must be in the same units as the selected scale. For example, if the selected scale is z then the coefficient constant must have units of z / C SELECTING THE USER DEFINED TEMPERATURE COMPENSATION MODE To use the user defined temperature compensation select the uc temperature compensation mode from the MODE menu. (See page 2-6 for more details) After quitting from the MODE menu, the instrument will return back to the main display and subsequent displayed readings will be corrected using the UDTC equation. SETTING UP THE SYSTEM 3-9

35 User Defined Scales ADP220 Polarimeter Only The ADP220 Series polarimeters can incorporate up to seven measurement scales, degrees angular, ISS, and five user definable scales. Pressing MODE, SCALE, as described on page 2-5, will step through the 2 permanent scales ( a, and z) and any of the 5 definable scales that have been set. CREATE A SPECIAL USER DEFINED SCALE The sequence to enter special scale DATA shown on the left, enables the operator to type in a scaling factor constant for each user defined scale. Press UP or DOWN until the appropriate User Scale (A,B,C,D,E) is displayed and press SLCT. Enter the value for scaling factor constant A (see "Entering a number" on page 2-2 for information on numeric entry). The first of two scale identification characters can then be entered. This can either be 0 to 9, by pressing the appropriate numeric key, or a letter, by pressing UP/DOWN and then SLCT. Then enter the second identification character. The polarimeter is basically calibrated in angular degrees. A single scaling factor constant is then used to convert the readings to the user defined scale units as shown below:- u=ax where u = reading in user units x = degrees angular and A the scaling factor constant 3-10 SETTING UP THE SYSTEM

36 CANCEL A USER DEFINED SCALE If any of the five User Defined Scales are not required for normal use, they can be removed from the SCALE selection list using the sequence shown on the left. Press UP or DOWN until the appropriate User Scale (A,B,C,D,E) is displayed and press SLCT. If all five User Defined Scales are Cancelled, then pressing SCALE will select only degrees angular ( a) or degrees angular ISS ( z). SETTING UP THE SYSTEM 3-11

37 Purity Settings & Operation ADS220 Saccharimeter Only The ADS220 has the facility to automatically calculate the purity of sugar solutions. The value of purity is derived from the angular rotation of the sample (supplied by the saccharimeter), the mass concentration (brix) value (supplied by a refractometer) and the density (derived from the brix value). The refractometer reading can be entered into the ADS220 either manually by entering the value through the ADS220 keypad or automatically if the refractometer is an Bellingham + Stanley RFM300 or RFM100 refractometer. As there are different methods used throughout industry for calculating sugar purity, the ADS220 has a number of settings which allow the instrument to be setup using the appropriate calculation. The general equation used to calculate sugar purity is shown below. Where: reading is the polarimeter reading in degree Z. purityconst is a user definable purity constant. density is calculated as a function of brix in accordance with the ICUMSA Specification and Standard SPS-4 (1994). brix is the brix value of the sample. PURITY FORMAT The calculated purity value can be displayed in a number of formats. The format is selected by entering a number which equals: the number of integer digits + the number of decimal places x 16. The default value is 35, which will output the purity value with 3 integer digits and 2 decimal places. A list of alternatives is shown below. Alternative Purity Format Values Value Description Example 50 2 integer, 3 decimal places 35 3 integer, 2 decimal places 20 4 integer, 1 decimal places 5 5 integer, 0 decimal places SETTING UP THE SYSTEM

38 PURITY CONSTANT The purity constant can include any scaling factors or adjustments for a particular purity calculation. Typically: purityconstant = zfactor * dilutionfactor * scalingfactor where:- zfactor = 260 kg/m 3 (equivalent to 0.26 g/ml) dilutionfactor = 1 if no clarifier is added = 1.1 if 10% extra volume added with clarifier. scalingfactor = 100 to display as percentage Example purityconstant = 260 x 1.1 x 100 = REFRACTOMETER TYPE Brix values can be automatically collected by the ADS220 from most B&S automatic refractometers. The ADS220 is compatible with all RFM300 Series and some RFM100 models. If the refractometer is not of this type then the brix value must be entered in manually at the ADS220 keypad. Pressing REF. will toggle the setting between rfm and man. Please note that if using the rfm setting, both the ADS220 and RFM must have matching RS232C settings. CONNECTING AN RFM REFRACTOMETER (RFM systems only) The refractometer is connected to the ADS220 by using the serial connecting lead (B+S Part No ) and adaptor lead (B+S Part No ) supplied with the refractometer. The two leads plug together to create a lead assembly with at one end a Lemo 6 way plug, which plugs into the RFM serial port socket and at the other a 9 pin D plug, which plugs into the ADS220 Refractometer socket. It is important that the refractometer is switched on before the saccharimeter. The refractometer must be set to the brix scale and have the sugar temperature compensation mode selected. Place some of the same sample on the refractometer as is in the sample tube. SETTING UP THE SYSTEM 3-13

39 SWITCHING TO PURITY MODE In normal operation the ADS220 will operate in the same manner as an ADP220 polarimeter. To start the purity mode, simply select the pu scale from the mode menu. When the purity mode is activated, the instrument main display will alter with 3 main sections on the lower line. Brix Reading Polarimeter Reading (in z with sugar temperature compensation) Miscellaneous data CALCULATING PURITY VALUES In order for the ADS220 to display the purity value it needs 2 reading values; rotation from the ADS220 and brix from a refractometer. First allow the ADS220 to read the sample. The z reading will be displayed next to the first value on the lower display. If the refractometer connected to the ADS is an RFM, the brix reading will automatically be continually read in and displayed in the bottom left hand side of the display. If the refractometer is not an RFM, take the brix reading, press PRINT on the ADS220 and type the brix reading in. When ENTER is pressed, the new brix reading will be displayed. With the brix reading and saccharimeter reading collected, the purity value will be displayed on the 7 segment display SETTING UP THE SYSTEM

40 ADP Key Function Map Print the displayed reading Zero the instrument Select multiplier, scale & temp. comp. Enter SPAN aim value and wait for correction. Change passwords Set response mode and reading resolution Enter UDTC constant. Configure the RS232 port. Select printer type Cancel a selected UDS Enter UDS scaling constants Set batch and operator variable Set clock Select temperature scale Select sample or chamber probe for temperature compensation SETTING UP THE SYSTEM 3-ADP

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42 ADS Key Function Map Print the displayed reading Zero the instrument Select multiplier, scale & temp. comp. Enter SPAN aim value and wait for correction. Change passwords Set response mode and reading resolution Enter UDTC constant. Select printer type Set batch and operator variable Set clock Set purity format, constant & refractometer mode Select temperature scale Select sample or chamber probe for temperature compensation SETTING UP THE SYSTEM 3-ADS

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44 S E C T I O N 4 Error Conditions & Messages Printing 4-1 System Lockup 4-1 Memory Corruption 4-1 Setting Default Values 4-2 ERROR CONDITIONS & MESSAGES 4

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46 Error Conditions & Messages PRINTING When data is sent to the printer by pressing PRINT, the characters are placed in an output buffer and are removed by the printer when it is ready. If there is not a printer connected or the printer is "off-line", then the characters remain in the buffer and a message will be displayed, requesting you to select retry or quit. When the printer is ready to print, press retry. Pressing quit will cancel the print and return to the main menu. SYSTEM LOCKUP If at any time the instrument fails to respond to the soft keys or produces nonsensical displays, press SYSTEM RESET or switch the power off, then on again. MEMORY CORRUPTION Most of the numbers and values used in the polarimeter calculations are stored in volatile memory, i.e. when the instrument is switched off, the values are lost. There are some values, however, that must be retained even when the power is removed and these are held in a special, nonvolatile memory. The instrument checks this stored data during switchon initialisation and when the data is saved following a change in configuration. If an error is detected, a warning message will be displayed, similar to the screen shown below. The user should press any key and the operation will continue. The user should then contact the B&S Service Department. When contacting B&S Service Department, please have the following information ready:- a. Instrument serial number (on label at the rear of the instrument housing). b. Software version (see page 3-1). c. Error code. ERROR CONDITIONS & MESSAGES 4-1

47 SETTING DEFAULT VALUES If the instrument fails to start up correctly after switching on, then it could be advisable to reset certain settings to the original factory set (or default) values. Switch the instrument off. Press, and hold down, the 9 key and switch on. Do not release the key until the screen shows... Selecting YES will set:- Response slow Display resolution high Reading multiplication factor 1.0 (off) Operator Password 123 Supervisor Password 135 RS232 serial conditions 9600, 8-bit, np Date format DD-MM-YY Batch & Operator codes 0 (none) Printer port parallel User defined t.c. constant 0 Temperature scale C Active temperature probe chamber ADP220 Selected scale a Selected temperature compensation nc a range -85 to +85 Scale selection list a, z only Printer type 24 column ADS220 Selected scale z Selected temperature compensation sc a range -85 to +85 (fixed) Scale selection list a, z, pu only Printer type 40+ column Purity constant Purity format 35 (2 decimal places) After pressing YES or NO, the next screen will be displayed... Selecting YES will set:- Span setting factory setting Last span value --:-- --/--/-- ADP220 Span aim value ADS220 Span aim value ERROR CONDITIONS & MESSAGES

48 If the instrument is an ADS220 after pressing YES or NO, the instrument will return to the main menu. If the instrument is an ADP220 the User Defined Scale screen will be displayed... Selecting YES will set:- All U.D. scales Constant A 0 All U.D. scales Constant B 0 All U.D. scales Constant C 0 All U.D. scales Constant D 0 All U.D. scales Constant E 0 All U.D. scales Constant F 0 U.D. scales identification characters u1,u2,u3,u4,u5 After setting default values, it is essential that the instrument is zeroed. ERROR CONDITIONS & MESSAGES 4-3

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50 S E C T I O N 5 Specification Performance 5-1 Temperature 5-1 Light Source 5-1 Interface Ports 5-1 Physical 5-2 Power Requirements 5-2 SPECIFICATION 5

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52 Specification PERFORMANCE ADP 220 Scale Z (ISS) Angular Range -30 to to +85 Resolution Accuracy (Sucrose 20 C) ± 0.05 ± 0.02 ADS 220 Scale Z (ISS) Range -225 to +225 Resolution 0.01 Accuracy (Sucrose 20 C and over the range -30 to +120 Z) ± 0.03 TEMPERATURE Ambient...5to45 C Storage... -5to60 C LIGHT SOURCE Type... L.E.D. with interference filter Nominal Wavelength nm INTERFACE Serial Type...RS232C Baud rate , 1200 or 9600 Word structure.. 7 bit with even parity or 8 bit with no parity Handshaking... Combined DSR/DTR type + XON/XOFF Refractometer Type...RS232C Baud rate Word structure... 8bitwith no parity Handshaking... Combined DSR/DTR type + XON/XOFF Parallel Type... "Centronics" printer output SPECIFICATION 5-1

53 PHYSICAL Depth mm Width mm Height mm Weight Kg POWER REQUIREMENTS Power Supply type Voltage to230V~ ±10% Frequency... 50to60Hz Max. load... 60mA 5-2 SPECIFICATION

54 S E C T I O N 6 Spares & Accessories Spare Parts 6-1 Power Supplies 6-1 Optional Accessories 6-1 Miscellaneous 6-1 Sample Tubes 6-1 SPARES &ACCESSORIES 6

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56 Spare Parts Description UK Version 230V Euro Version 230V US Version 110V POWER SUPPLIES OPTIONAL ACCESSORIES Power supply unit (all instruments) Mains leads (for use with ) Quartz Control Plate nominal 97 Z (33 Angular) Quartz Control Plate nominal 15 Z (5 Angular) Serial printer interface cable - 25way "D" type Parallel printer interface cable - 36way "Centronics" PC adaptor (for use with 54-02) column printer package including power supply (for use with interface cable 54-02) (ADP220 only) 40 column printer package including power supply and interface cable U 55-02E 55-02S 55-09U 55-09E 55-09S MISCELLANEOUS Operators manual (English) Operators manual (Spanish) Operators manual (French) Operators manual (German) ADP220 Utility software (for remote operation and User Defined Scale creation) (for use on a PC with Windows 95 or NT) Description Tube Length 100mm 200mm SAMPLE TUBES Standard glass sample tube Straight centre filling glass tube Cup-shaped centre filling glass tube Centre filling glass tube fitted with water jacket Funnel flow through tube with water jacket Continuous flow through tube with water jacket Tubes for special applications and with reduced internal diameter are also available on application. (Contact B+S) SPARES &ACCESSORIES 6-1

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