Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Thermo Scientific ALPHA DO 500 - REV 4
Summary of Contents for Thermo Scientific ALPHA DO 500 - REV 4
- Page 1 Alpha DO 500 Transmitter Dissolved Oxygen...
- Page 2 ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. U.S. patent 6,793,787. AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher. 1-888-pHAX-ION, A+, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTO- CAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTO-STIR, Auto-Test, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal,...
- Page 3 Preface This manual serves to explain the use of the Alpha DO 500 transmitter. It functions in two ways, firstly as a step by step guide to help you to operate the transmitter. Secondly, it serves as a handy reference guide. It is written to cover as many anticipated applications of the transmitter as possible.
-
Page 4: Table Of Contents
Range Settings........................27 Hold Settings ........................28 Out of Range Settings ......................29 Viewing Calibration Point ..................... 30 Viewing Electrode Condition ....................31 5.10 Resetting ..........................32 6. Technical Specifications..................33 7. List of Accessories .....................35 Thermo Scientific........................35 Eutech Instruments ......................36... - Page 5 8. Troubleshooting ....................37 9. General Information ....................38 Warranty..........................38 Return of Goods ........................38 Guidelines for Returning Unit for Repair ................38 Maintenance and Cleaning ....................38 10. Appendices .......................39 10.1 Appendix 1 – Salinity vs. Temperature (@ 760mmHg)............39 10.2 Appendix 2 –...
-
Page 7: Introduction
Instruction Manual Alpha DO 500 1. Introduction 1.1 Before You Begin We thank you for purchasing the Alpha DO 500 Transmitter. The construction of the Alpha DO 500 Transmitter employs leading edge technology and complies with safety regulations currently in force. Notwithstanding this, improper use could lead to hazards for the user or a third-party, and/or adverse effects on the plant or other equipment. -
Page 8: Safety Instructions
Instruction Manual Alpha DO 500 1.3 Safety Instructions - The Alpha DO 500 Transmitter should be installed and operated only by personnel familiar with the instrument and who are qualified for such work. - A defective Transmitter must neither be installed nor put into service. -
Page 9: Getting Started
Instruction Manual Alpha DO 500 2. Getting Started 2.1 Description of Instrument The Thermo Scientific Alpha DO 500 Transmitter is used for measuring dissolved oxygen and temperature values. The dissolved oxygen values can be measured using industrial dissolved oxygen sensors. The temperature values can be measured using 2-wire or 3-wire Pt100 sensors. -
Page 10: Measurement And Control System
Instruction Manual Alpha DO 500 2.2 Measurement and Control System A typical measurement system consists of: x A Alpha DO 500 Transmitter x A dissolved oxygen sensor with integrated or separate Pt100 temperature sensor x An appropriate measurement cable x An immersion, flow or process assembly x A chart recorder Alpha DO500 Transmitter Chart Recorder... -
Page 11: Connecting Peripherals
Instruction Manual Alpha DO 500 2.3 Connecting Peripherals 2.3.1 Connection Terminals Remove Back Cover: Remove the screws from the four corners at the back of the DO Transmitter. Remove the back cover. The connectors are exposed on the back PCBA as shown in the Figure 1 below. -
Page 12: Connecting Dissolved Oxygen Electrode
Instruction Manual Alpha DO 500 2.3.2 Connecting Dissolved Oxygen Electrode Refer the instruction sheet that comes with your Dissolve Oxygen electrode to identify polarity (+ve and –ve) of DO wires. 1. Connect DO +ve wire to Pin 1 of SL1 connector 2. -
Page 13: Installation
Instruction Manual Alpha DO 500 2.4 Installation 2.4.1 Mechanical Dimensions Alpha DO 500 2-wire Dissolved Oxygen Transmitter 2.4.2 Wall Mount Pierce through holes at both sides Cover the catch slots at both sides with overlays... -
Page 14: Panel Mount
Instruction Manual Alpha DO 500 2.4.3 Panel Mount Prepare panel cut-out of 92.0 mm X 92.0 mm Remove back cover of DO Transmitter and slide it through panel cut-out Gasket Panel Panel Insert threaded rods through catch until DO Transmitter is held against panel Attach catch to both sides of DO Transmitter... -
Page 15: Display & Keypad
Instruction Manual Alpha DO 500 2.5 Display & Keypad 2.5.1 Display Overview The Liquid Crystal Display (LCD) of the Alpha DO 500 Transmitter has two alpha-numerical displays (Upper and a Lower). x Upper display: Measured dissolved oxygen reading (in % saturation or ppm or mg/l) is displayed when the Transmitter is in normal operation (measurement) mode. -
Page 16: Key Functions
Instruction Manual Alpha DO 500 Units of Measurement Indicators Dissolved Oxygen in Percentage Saturation Dissolved Oxygen in Parts Per Million mg/l Dissolved Oxygen in milligram per liter (Refer Section5.4) ºC Temperature in Celsius 2.5.2 Key Functions lpha DO500 2-wire Dissolved Oxygen Transmitter Description Enter Calibration mode Enter Setup mode. -
Page 17: Normal Operation
Instruction Manual Alpha DO 500 3. Normal Operation 3.1 Measurement mode When the DO Transmitter is powered on, the display shows all the LCD segments briefly, and then automatically enters into the Measurement mode. MEAS 9 9 . 0 READY 2 5 . -
Page 18: Menu Overview
Instruction Manual Alpha DO 500 3.2 Menu Overview HOLD MEAS READY °C SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD... -
Page 19: Calibration Mode
Instruction Manual Alpha DO 500 4. Calibration Mode 4.1 Entering Calibration Mode While in measurement mode, press CAL key to access calibration mode. LCD indicates ‘CAL dO’. MEAS Calibration Mode READY HOLD Calibration in mg/l - See Section 4.3 °C Calibration in saturation - See Section 4.4... -
Page 20: Calibration In Mg/L Or Ppm Of Oxygen
Instruction Manual Alpha DO 500 4.2 Calibration in mg/l or ppm of Oxygen The DO Transmitter is capable of calibration of up to 2 points for dissolved oxygen. All new calibration values will automatically override existing calibration data. Make sure the unit of measurement is set to mg/l or ppm. (Refer Section 5.2 for switching unit of measurements). -
Page 21: 2-Point Calibration
Instruction Manual Alpha DO 500 NOTES: x If the displayed value is more than r10% of the high-point value, the Transmitter indicates a calibration error by showing ‘ERR’ and blinking electrode annunciator. If this happens, press keys together to return to measurement mode. Restart the calibration from Step1. x To exit from calibration mode without confirming calibration, press keys together. - Page 22 Instruction Manual Alpha DO 500 NOTE: The transmitter proceeds to the second point of calibration if the displayed reading is less than 10% of the high-point value. NOTE: The transmitter does not accept the calibration and shows calibration error if the displayed (measured) value is more than 10% of the high-point value.
-
Page 23: Calibration In% Saturation Of Oxygen
Instruction Manual Alpha DO 500 4.3 Calibration in% Saturation of Oxygen The DO Transmitter is capable of calibrating up to 2 points for dissolved oxygen. All new calibration values will automatically override existing calibration data. Make sure the unit of measurement is set to %. (Refer Section 5.2 for switching unit of measurements). -
Page 24: 2-Point Calibration
Instruction Manual Alpha DO 500 NOTES: x If the displayed value is not within 50% to 150%, the Transmitter indicates a calibration error by showing ‘ERR’ and blinking electrode annunciator. If this happens, press keys together to return to measurement mode. Restart the calibration from Step1. x To exit from calibration mode without confirming calibration, press keys together. - Page 25 Instruction Manual Alpha DO 500 Press ENT key to confirm the reading. NOTES: x The transmitter proceeds to the second point of calibration if the displayed reading is less than 10% x The transmitter does not accept the calibration and shows calibration error if the displayed (measured) value is more than 10% If the 0% calibration is successful, the Transmitter proceeds to the...
-
Page 26: Setup Mode
Instruction Manual Alpha DO 500 5. Setup Mode 5.1 Enter Setup mode The setup mode allows you to customize the settings of the DO Transmitter to suite your requirements. While in measurement mode, press the ENT key to access setup mode. -
Page 27: Configuration Settings
Instruction Manual Alpha DO 500 5.2 Configuration Settings Configuration settings let you configure the DO Transmitter to different units of measurements (%, mg/l or ppm) set salinity and pressure values. SETUP SETUP SETUP SETUP HOLD HOLD HOLD HOLD SETUP SETUP SETUP SETUP HOLD... - Page 28 Instruction Manual Alpha DO 500 display shows the unit measurement selected in the step 4. Press key to set the required pressure value. Press ENT key to confirm the value. The Transmitter reverts to COF screen. Press key to access other setup screens or press simultaneously (escape) to return to measurement mode.
-
Page 29: Offset Settings
Instruction Manual Alpha DO 500 5.3 Offset Settings In applications where continuous DO measurement is required, it may not be convenient to remove the electrode for calibration. In such cases, an on-line offset adjustment is recommended. The DO Transmitter allows you set an offset of up to ± 2.00ppm or ±... - Page 30 Instruction Manual Alpha DO 500 If ‘nO’ was selected: The existing offset value (if any) is unaffected and the Transmitter reverts to OFS screen. Press key to access other setup screens or press simultaneously (escape) to return to measurement mode.
-
Page 31: Temperature Settings
Instruction Manual Alpha DO 500 5.4 Temperature Settings Temperature settings allow you to enable or disable Automatic Temperature Compensation (ATC) of the Transmitter. Set the Transmitter to manual temperature compensation (disable ATC) when the temperature of sample or process liquid is constant and a temperature probe is not available. - Page 32 Instruction Manual Alpha DO 500 As the lower display value changes, the Transmitter adjusts the upper display reading automatically to suit the new offset value. Up to ± 10 ºCF offset is allowed. Press ENT key to confirm the value. The Transmitter reverts to SET ºC screen.
-
Page 33: Range Settings
Instruction Manual Alpha DO 500 5.5 Range Settings The range settings allow you to map the Transmitter output current range (4-20 mA) to dissolve oxygen reading range (Zoom window). You can define the lowest DO reading of the Transmitter to 4mA (LO) and the highest DO reading to 20mA (HI). The current output can then be connected to a chart recorder to plot the DO variations. -
Page 34: Hold Settings
Instruction Manual Alpha DO 500 5.6 Hold Settings When you switch the Transmitter to calibration mode or setup mode, the transmitter goes to the ‘HOLD’ status (indicating ‘HOLD’ in the display) and freezes the current output at a specific value. Hold setting allows you to define the output current of the Transmitter when the Transmitter is in ‘HOLD’... -
Page 35: Out Of Range Settings
Instruction Manual Alpha DO 500 5.7 Out of Range Settings When the Transmitter measures a dissolved oxygen value which does not fall within the DO range (Zoom window) defined in the ‘Range Settings’, the reading is said to be ‘out of range’. Out of range setting allows you to define the output current of the Transmitter when the Transmitter measures an ‘out of range’... -
Page 36: Viewing Calibration Point
Instruction Manual Alpha DO 500 5.8 Viewing Calibration Point Calibration setting lets you view the high-point at which the calibration has been performed in the Transmitter. SETUP SETUP HOLD HOLD From measurement mode press ENT key to enter setup mode as described in section 5.1. -
Page 37: Viewing Electrode Condition
Instruction Manual Alpha DO 500 5.9 Viewing Electrode Condition The electrode condition (correction factor=K) is an indication of its current working condition with respect to its original condition. The correction factor is calculated and stored in the Transmitter each time calibration is done. Electrode Correction Factor (K) = Theoretical reading of the electrode Default reading of the electrode SETUP... -
Page 38: Resetting
Instruction Manual Alpha DO 500 5.10 Resetting Resetting restores the Transmitter to its factory default settings. It resets the calibration to factory defaults without resetting other parameters of the Transmitter. SETUP SETUP HOLD HOLD SETUP HOLD From measurement mode press ENT key to enter setup mode as described in section 5.1. -
Page 39: Technical Specifications
Instruction Manual Alpha DO 500 6. Technical Specifications General Specification (a) Dissolved Oxygen (% saturation) Measuring Range 0.00 to 199.9 % Resolution 0.1 % Relative Accuracy ± 1.5% of full-scale reading (b) Dissolved Oxygen (ppm or mg/l) Measuring Range 0.00 to 19.99 ppm or 0.00 to 19.99 mg/l Resolution 0.01 ppm or 0.01 mg/l Relative Accuracy... - Page 40 Instruction Manual Alpha DO 500 Other Power Input 12 to 24 VDC Dimensions (W x H x D) 96mm x 96mm x 66 mm Weight (Estimated) 210g Ambient Temp. operating 0 to 40 range Maximum Relative Humidity 80% up to 31 C decreasing linearly to 50% at...
-
Page 41: List Of Accessories
Instruction Manual Alpha DO 500 7. List of Accessories 7.1 Thermo Scientific Transmitter Replacement and Accessories Item Description Order Code Alpha DO 500 Transmitter TSDOCTP0500 General Purpose Epoxy-body Dissolved Oxygen Electrode with PT100, range: 0.50 - 20 ppm, 5m cable length, tinned ECDOGEN-S open-ended Special Purpose Epoxy-body Low Dissolved Oxygen... -
Page 42: Eutech Instruments
Instruction Manual Alpha DO 500 7.2 Eutech Instruments Controller Replacement and Controller Accessories Item Description Order Code Alpha DO 500 Transmitter 35151-10 General purpose epoxy-body dissolved oxygen electrode with Pt100 temperature sensor, 0-20 ppm, 10 foot cable length, 35201-50 tinned open-ended. -
Page 43: Troubleshooting
Instruction Manual Alpha DO 500 8. Troubleshooting Cause Problem Solution Power on, but no a) Loose connections a) Ensure cables make good display contact b) Power cables not in correct polarity (+ & -) b) Re-wire loop cables with correct polarity c) Incorrect output voltage of the power supply c) Use a power supply with... -
Page 44: General Information
Maintenance lpha DO 500 Transmitter contains no user repairable components. Please contact Eutech Instruments or its distributor if there is any problem with the unit. Cleaning To remove dust, dirt and spots, the external surfaces of the DO Transmitter may be wiped with a damp, lint-free cloth. -
Page 45: Appendices
Instruction Manual Alpha DO 500 10. Appendices 10.1 Appendix 1 – Salinity vs. Temperature (@ 760mmHg) The following table shows the Dissolved Oxygen values at different salinity values, at different temperatures, at barometric pressure of 760 mmHg. For other pressure levels, the Transmitter automatically corrects the value based on the pressure value input. -
Page 46: Appendix 2 - Abbreviations Used In Lcd
Instruction Manual Alpha DO 500 10.2 Appendix 2 – Abbreviations Used in LCD Abbreviation Description Automatic Temperature Compensation Pressure in Bar bUFF Buffer Calibration Pressure in centimeter of mercury CºC Calibration Temperature Electrode condition Factory defaults Pressure in millimeter of mercury High limit Hold Low limit... - Page 48 Water Analysis Instruments North America 166 Cummings Center Beverly, MA 01915 USA Toll Free: 1-800-225-1480 Tel: 1-978-232-6000 Dom. Fax: 1-978-232-6015 Int’l Fax: 978-232-6031 Europe P.O. Box 254, 3860 AG Nijkerk Wallerstraat 125K, 3862 CN Nijkerk, Netherlands Tel: (31) 033-2463887 Fax: (31) 033-2460832 Asia Pacific Blk 55, Ayer Rajah Crescent #04-16/24, Singapore 139949...