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OPERATING AND SERVICE MANUAL
E-S
DSA
CAN
Dissolved Solids Analyzer Refractometer
Designed and Manufactured by
THE ELECTRON MACHINE CORPORATION
15824 CR 450 West
(352)-669-3101
Post Office Box 2349
FAX: (352)-669-1373
Umatilla, FL 32784-2349
E-Mail: sales@electronmachine.com
http://www.electronmachine.com
cav09/09
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Summary of Contents for THE ELECTRON MACHINE CORPORATION DSA E-Scan
- Page 1 OPERATING AND SERVICE MANUAL Dissolved Solids Analyzer Refractometer Designed and Manufactured by THE ELECTRON MACHINE CORPORATION 15824 CR 450 West (352)-669-3101 Post Office Box 2349 FAX: (352)-669-1373 Umatilla, FL 32784-2349 E-Mail: sales@electronmachine.com http://www.electronmachine.com cav09/09...
- Page 3 It measures the critical angle of refraction of sample fluids, which can be directly correlated to various measurements; i.e. dissolved solids, Brix, refractive index, etc. The DSA E-Scan is equipped with a menu-driven user interface. It is calibrated before leaving the factory and should not need re-calibration. Calibration procedures are available to change system parameters and allow the refractometer to measure different sample fluids if so desired.
- Page 4 NTRODUCTION Important Manual Information The Chapter title is at the top of each page for quick reference through the manual. Important points, reminders, and warning messages are printed in bordered boxes as: NOTE: Box indicates important messages. This is a general use manual. Additional information is available for specific applications.
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Page 5: Table Of Contents
Table of Contents Installation......................1-1 1.1 Site Selection....................1-1 1.2 Power Requirements..................1-1 1.3 Interconnection....................1-1 1.3.1 Voltage Outputs..................1-1 1.3.2 Serial Ports ....................1-2 1.3.3 Parallel Port ....................1-2 1.3.4 Optional Temperature Controlled Coolant Circulation ....1-2 1.4 Outline Drawing ....................1-3 System Information .................. - Page 6 3.4.15 Black Liquor Scale Factor..............3-8 3.4.16 Custom Calibration................. 3-8 3.4.17 Custom Temperature Compensation..........3-9 3.4.18 Test Mode....................3-9 3.4.19 Password Entry ..................3-9 3.5 External Communications ................3-10 3.5.1 Serial Ports ..................... 3-10 3.5.1.1 Comm 1....................3-11 3.5.1.2 Comm 2....................3-11 3.5.2 Parallel Port ....................
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Page 7: Installation
Installation Site Selection The DSA E-Scan is to be operated in an industrial laboratory environment. Select an area where the instrument will be protected from shock and vibration to avoid damage to the optics. The console is sealed from the environment. However, care should be taken to avoid temperature extremes and exposure to moisture. -
Page 8: Serial Ports
NSTALLATION 1.3.2 Serial Ports The DSA E-Scan offers two serial interface ports at J5 and J1 on the electronics card. The connectors are male and female DB9 with the standard personal computer pin out for IBM PC/AT compatible devices. This feature allows interfacing the DSA E-Scan with a computer or printer. -
Page 9: Outline Drawing
NSTA LLATION Outline Drawing... - Page 10 NSTALLATION - N O T E S-...
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Page 11: System Information
YSTEM NFORMATION System Information Technical Description 2.1.1 Measurement Sensing The DSA E-Scan uses an LED as an energy source and utilizes a CCD (charge coupled device) to accomplish scanning the reflected energy returned from the prism. 2.1.1.1 Optics Light energy radiating from a... -
Page 12: Ccd Linear Array
YSTEM NFORMATION 2.1.1.2 CCD Linear Array The Charged Coupled Device (CCD) linear array used in the DSA E-Scan includes 2048 individual photo sites. Each of these photo-diodes independently measures the incident radiation between scan intervals and stores an electrical charge, which reflects the measured intensity. -
Page 13: Enclosure
Enclosure, Display and Switch Matrix Overlay The DSA E-Scan has a data access port to allow data communications with external peripherals. The cover should be installed at all times to prevent liquid intrusion. The supplied gaskets should be used with any wires or cables securely sandwiched between the gaskets and the data access cover using the supplied hardware. -
Page 14: Power Supply
NFORMATION 2.1.7 Power Supply The supplied power source for the DSA E-Scan is a desktop power supply selected for its high power rating (51W). The power supply delivers 24VDC at 2.1A to the instrument through the sealed power connector on the enclosure. The power supply accepts inputs from 90-265VAC and 47-63Hz. -
Page 15: Electronics Card
YSTEM NFORMATION 2.1.8 Electronics Card The DSA E-Scan incorporates all functions onto two multi-layered surface mount printed circuit cards, with components on both sides. The following diagramg shows the layout of major components, integrated circuits, switches, and connections. Heater Comm 1... -
Page 16: Refractometer Specifications
YSTEM NFORMATION Refractometer Specifications The precision and accuracy of refractive index measurements is dependent on operator skill, the environment, temperature control, the accuracy of calibration standards, chemical stability of the sample, and the concentration of the sample. A product demonstration is suggested to validate the true precision and accuracy of the instrument in a specific application. -
Page 17: Operation
Some liquids may necessitate a second cleaning to prevent cross-contamination of samples. NOTE: Do not use Lacquer Thinner or other related solvents to DSA E-Scan User Interface clean the sample chamber. Damage to the display window may result from inadvertent contact. -
Page 18: Button Touch Pad Function Chart
PERATION 3.1.2 Button Touch Pad Function Chart “Up” allows changing between measurement and temperature readings (°F and °C) in normal mode. It is also used to scroll through options after pressing “menu” and increments the value when user input is prompted. “Right”... -
Page 19: Set-Up
Normal Mode The default mode for the DSA E-Scan displays the reading according to the selected measurement units. The “LEFT” arrow and “RIGHT” arrow keys change the measurement units and the “UP” arrow and “DOWN” arrow keys display the temperature in °C and °F. The “READ”... -
Page 20: Menu Selections
PERATION Menu Selections Pressing the “MENU” key allows the user to scroll with the “UP” and “DOWN” key through a series of menus that allow adjusting the operation of the instrument. Pressing the “ENTER” key selects the parameter to be adjusted. Pressing the “ESC” key at any time will return to the previous display, and pressing the “READ”... -
Page 21: Single Point Calibration
PERATION 3.4.2 Single Point Calibration The single point calibration is designed to easily calibrate the instrument with either a water sample or a known refractive index sample, or a sample with known brix, solids, or specific gravity value. This feature should be used if the instrument does not accurately read a sample. This procedure will effectively shift the stored calibration curve to match the current reading (zero shift) without affecting the saved calibration data. -
Page 22: Temperature Minimum
PERATION 3.4.6 Temperature Minimum When using the 0-5V temperature output, this option allows a minimum temperature reading to be correlated to the 0V output. This parameter has nothing to do with the instrument’s calibration and is only for adjusting the scale of the temperature output. 3.4.7 Temperature Maximum When using the 0-5V temperature output, this option allows a maximum temperature reading to... -
Page 23: Time Adjustment
PERATION 3.4.10 Time Adjustment Use the “RIGHT” and “LEFT” arrow buttons to move the cursor and the “UP” and “DOWN” arrows to change the appropriate digit. Press “ENTER” to save the changes and to continue normal clock operation. 3.4.11 Date Adjustment Use the “RIGHT”... -
Page 24: Sample Time
This should be used to compensate for the slight deviations from industry standards that exist due to small amounts of un-dissolved solids in a process. The appropriate scale factor is calculated by dividing the sample’s known value by the DSA E-Scan’s measurement reading of the same sample. -
Page 25: Custom Temperature Compensation
A value of refractive index change per degree C of the solution to be measure should be entered. The DSA E-Scan corrects the measured readings based on the sample’s temperature and the value entered. -
Page 26: External Communications
PERATION External Communications The DSA E-Scan is equipped with standard features that allow the instrument to be integrated into a process control environment. These features are accessed via dual serial communication ports as well as through a parallel port and allow the instrument to print reports of samples read at specific times and dates as well as communicate with external computers. -
Page 27: Comm 1
The Comm 2 serial port is used for communication with an external computer. This port is configured to receive at all times when the DSA E-Scan is on and will transmit requested information when prompted to with the appropriate command. The following list shows the defined serial commands that can be used with the DSA E-Scan. - Page 28 PERATION >TPCA transmits stored PMAX compensation attenuation factor >TPCO transmits stored PMAX compensation offset factor Receive commands- use the following commands immediately followed by an acceptable value to change the associated information from an external computer. >RAML followed by 1.23456 for R.I. and R.I. (TC) or 12.34 for Brix and Solids measurement units: receives analog measurement low value >RAMH followed by 1.23456 for R.I.
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Page 29: Parallel Port
PERATION 3.5.2 Parallel Port When the “SEND” button is pressed, the DSA E-Scan transmits date, time, measurement reading, and temperature data through the parallel port. The following is a sample illustrating the format used. 01/10/02 15:24:02 BRIX = 01.37 TEMP = 26.6C 079.9F A form feed signal is sent after 15 transmissions. - Page 30 PERATION - N O T E S- 3-14...
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Page 31: Servicing
(352) 669-3101 (352) 669-1373 fax Preventive Maintenance The DSA E-Scan requires very little maintenance, but should be checked periodically for proper calibration. The most important factor in maintaining accuracy is the cleanliness of the sample chamber and the surrounding surfaces. - Page 32 SERVICING - N O T E S-...