Advanced Instruments Inc. GPR-2800AIS % Oxygen Transmitter with Optional Sample System Owner’s Manual 2855 Metropolitan Place, Pomona, California 91767 USA ♦ Tel: 909-392-6900, Fax: 909-392-3665, e-mail: info@aii1.
Advanced Instruments Inc.
Advanced Instruments Inc. 2 Quality Control Certification Date: Model: Customer: Order No.
Advanced Instruments Inc. 3 Safety General This section summarizes the essential precautions applicable to the GPR-2800AIS Oxygen Transmitter. Additional precautions specific to individual transmitter are contained in the following sections of this manual. To operate the transmitter safely and obtain maximum performance follow the basic guidelines outlined in this Owner’s Manual.
Advanced Instruments Inc. Liquid and Object Entry: The transmitter should not be immersed in any liquid. Care should be taken so that liquids are not spilled into and objects do not fall into the inside of the transmitter. Handling: Do not use force when using the switches and knobs. Before moving your transmitter be sure to disconnect the wiring/power cord and any cables connected to the output terminals located on the transmitter.
Advanced Instruments Inc. 5 Operation Principle of Operation The GPR-2800AIS oxygen transmitter incorporates a variety of advanced galvanic fuel cell type sensors. The transmitter is configured in two sections. The signal processing electronics and sensor are housed in a general purpose NEMA 4X rated enclosure. The terminals for incoming power, power supply, signal output, alarm relay contacts and intrinsic safety barriers are mounted on a PCB housed in an explosion proof enclosure.
Advanced Instruments Inc. Calibration & Accuracy Overview Single Point Calibration: As previously described the galvanic oxygen sensor generates an electrical current proportional to the oxygen concentration in the sample gas. In the absence of oxygen the sensor exhibits an absolute zero, e.g. the sensor does not generate a current output in the absence of oxygen. Given these linearity and absolute zero properties, single point calibration is possible.
Advanced Instruments Inc. Recommendation 1: Zero calibration, see Determining True Zero Offset below, is recommended only for online analyzers performing continuous analysis below 5% of the lowest most sensitive range available with a % analyzer, e.g. analysis below 0.5 % on the 10 % range, or below 0.1% (1000 %) with a percent analyzer.
Advanced Instruments Inc. Installation Considerations Gas Sample Stream: Ensure the gas stream composition of the application is consistent with the specifications and review the application conditions before initiating the installation. Consult the factory if necessary to ensure the sample is suitable for analysis. Note: In natural gas applications such as extraction and transmission, a low voltage current is applied to the pipeline itself to inhibit corrosion.
Advanced Instruments Inc. Calibrating either a % or percent analyzer with ambient air (with the exception of Oxygen Purity Analyzers intended to measure elevated oxygen levels ranging from 50-100% oxygen) on the CAL or 0-25% range meets the 80% criteria discussed above.
Advanced Instruments Inc. Caution: If the transmitter is equipped with an optional flow indicator with integral metering valve or a metering flow control valve upstream of the sensor - open the metering valve completely to avoid drawing a vacuum on the sensor and placing an undue burden on the pump. If pump loading is a consideration, a second throttle valve on the pump’s inlet side may be necessary to provide a bypass path so the sample flow rate is within the above parameters.
Advanced Instruments Inc. Gas Connections The GPR-2800AIS with its standard flow through configuration is designed for positive pressure samples and requires connections for incoming sample and outgoing vent lines. Zero and span inlet ports are offered as part of the optional sample systems. The user is responsible for calibration gases and the required components, see below. Flow rates of 1-5 SCFH cause no appreciable change in the oxygen reading.
Advanced Instruments Inc. 6. 7. 8. The 4-20mA current output is obtained by connecting the current measuring device between the positive and negative terminals labeled OUTPUT 4-20mA. To check the signal output of the 4-20mA E/I integrated circuit connect an ammeter as the measuring device and confirm the output is within +0.1mA of 4mA. Caution: To assure proper grounding, connect the 4-20mA signal output to the external device (PLC, DCS, etc.) before attempting any zero or span adjustments.
Advanced Instruments Inc. Span Gas Preparation Caution: Do not contaminate the span gas cylinder when connecting the regulator. Bleed the air filled regulator (faster and more reliable than simply flowing the span gas) before attempting the initial calibration of the instrument. Required components: 1. Certified span gas cylinder with an oxygen concentration, balance nitrogen, approximating 80% of the full scale range above the intended measuring range. 2.
Advanced Instruments Inc. Menu Navigation The 1. 2. 3. 4.
Advanced Instruments Inc. For example, if the transmitter is reading 1% on the 0-10% range and an upset occurs, the display will shift to the 0-25% range when the oxygen reading exceeds 9.9%. Conversely, once the upset condition is corrected, the display will shift back to the 010% range when the oxygen reading drops to 8.5%. Manual Sampling: 1. Access the MAIN MENU by pressing the MENU key. 2. Advance the reverse shade cursor using the ARROW keys to highlight MANUAL SAMPLE. 3.
Advanced Instruments Inc. Alarms The CONFIG ALARMS features a system that can be configured in the field.
Advanced Instruments Inc. 01.0 GAS CONCENTRATION >>> PERCENT % SET ALARM 1 VALUE PRESS UP OR DOWN TO CHANGE VALUE ENTER TO SAVE MENU TO RETURN 002 GAS CONCENTRATION >>> PERCENT %% SET ALARM 1 VALUE PRESS UP OR DOWN TO CHANGE VALUE ENTER TO SAVE MENU TO RETURN 10. Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline cursor left to reach to the desired digit of the alarm value. 11. Press the ARROW keys to enter the alarm value. 12.
Advanced Instruments Inc. 1. 2. 3. 4. Access the MAIN MENU by pressing the MENU key. Advance the reverse shade cursor using the ARROW keys to highlight CONFIG ALARMS. Press the ENTER key to select the highlighted menu option. The following displays appear: MAIN MENU MAIN MENU >>> AUTO SAMPLE MANUAL SAMPLE CALIBRATION CONFIG ALARMS BYPASS ALARMS 5. 6. 7.
Advanced Instruments Inc. MAIN MENU MAIN MENU >>> AUTO SAMPLE MANUAL SAMPLE CALIBRATION CONFIG ALARMS BYPASS ALARMS 5. 6. Advance the reverse shade cursor using the ARROW keys to highlight the ALARM 1 option, which appears as either ALARM 1 HI or ALARM 1 LO. Press the ENTER key to toggle and change the displayed setting. After 3 seconds, the system returns to SAMPLING mode. 3.3 24.5 C LO1 2% 7.
Advanced Instruments Inc. 3.3 24.5 C LO1 2% % AUTO SAMPLING 10% RANGE 100 KPA 10% HI2 Bypass Alarms: This feature, separate from CONFIG ALARMS above, enables the user to disable the local audible alarm and relay contacts during calibration or servicing. The alarms are enabled when the alarm condition is corrected. 1. Access the MAIN MENU by pressing the MENU key. 2. Advance the reverse shade cursor using the ARROW keys to highlight BYPASS ALARMS. 3.
Advanced Instruments Inc. Zero Calibration In theory, the oxygen sensor produces no signal output when exposed to an oxygen free sample gas.
Advanced Instruments Inc. 5. 6. 7. Advance the reverse shade cursor using the ARROW keys to highlight ZERO CALIBRATE. Press the ENTER key to select the highlighted menu option. The following displays appear: 0.000 % ZERO CALIBRTION ENTER TO CALIBRATE MENU TO ABORT 8. 9. Press the ENTER key to calibrate or MENU key to abort and return to SAMPLING mode.
Advanced Instruments Inc. 3.3 FACTORY DEFAULTS SET 24.5 C LO1 2% % AUTO SAMPLING 10% RANGE 100 KPA 10% HI2 Output Zero In rare instances the 4-20mA signal output may not agree to the reading displayed by the LCD. This feature enables the user to adjust the 4mA signal output when the LCD displays 00.00. Note: Adjust the 20mA signal output with the OUTPUT SPAN option described below. 1. Access the MAIN MENU by pressing the MENU key. 2.
Advanced Instruments Inc. 8. Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline cursor left to reach to the desired digit of the OUTPUT ZERO OFFSET value. 9. Press the ARROW keys to enter the OUTPUT ZERO OFFSET value. 10. Repeat until the complete OUTPUT ZERO OFFSET value has been entered. 11. Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key. 12. The system returns to the SAMPLING mode.
Advanced Instruments Inc. Span Calibration Maximum drift from calibration temperature is approximately 0.11% of reading per °C. The analyzer has been calibrated at the factory. However, in order to obtain reliable data, the analyzer must be calibrated at the initial start-up and periodically thereafter. The maximum calibration interval recommended is approximately 3 months, or as determined by the user’s application.
Advanced Instruments Inc. 3.3 MAIN MENU AUTO SAMPLE MANUAL SAMPLE CALIBRATION CONFIG ALARMS BYPASS ALARMS 8. 9. 10. 11. 12. AUTO SAMPLING 10% RANGE 24.5 C 100 KPA LO1 1% 10% HI2 Return to the MAIN MENU by pressing the MENU key. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION. Press the ENTER key to select the highlighted menu option.
Advanced Instruments Inc. 23. Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline cursor left to reach to the desired digit of the alarm value. 24. Press the ARROW keys to enter the alarm value. 25. Repeat until the complete span value has been entered. 26. Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key. 27.
Advanced Instruments Inc. 3.1 FACTORY DEFAULTS SET 24.5 C LO1 2% % AUTO SAMPLING 10% RANGE 100 KPA 10% HI2 Output Span: In rare instances the 4-20mA signal output may not agree to the reading displayed by the LCD. This feature enables the user to adjust the 20mA signal output should the LCD display not agree. Note: Adjust the 4mA signal output with the OUTPUT ZERO option described above. 1. Access the MAIN MENU by pressing the MENU key. 2.
Advanced Instruments Inc. 9. 10. 11. 12. 13. Press the ENTER key to advance the underline cursor right or press the MENU key to advance the underline cursor left to reach to the desired digit of the OUTPUT SPAN OFFSET value. Press the ARROW keys to enter the OUTPUT SPAN OFFSET value. Repeat steps 9 and 10 until the complete OUTPUT SPAN OFFSET value has been entered. Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key. The system returns to the SAMPLING mode.
Advanced Instruments Inc. 6 Maintenance Generally, cleaning the electrical contacts or replacing filter elements is the extent of the maintenance requirements of this transmitter. Sensor Replacement Periodically, the oxygen sensor will require replacement. The operating life is determined by a number of factors that are influenced by the user and therefore difficult to predict.
Advanced Instruments Inc. 7 Spare Parts Recommended spare parts for the GPR-2800AIS Oxygen Transmitter: Item No. Description GPR-11-24 XLT-11-24 Oxygen Sensor Oxygen Sensor Other spare parts: Item No.
Advanced Instruments Inc.
Advanced Instruments Inc.
Advanced Instruments Inc.
Advanced Instruments Inc. 9 Warranty The design and manufacture of GPR Series oxygen analyzers, monitors and oxygen sensors are performed under a certified Quality Assurance System that conforms to established standards and incorporates state of the art materials and components for superior performance and minimal cost of ownership.
Advanced Instruments Inc. 10 MSDS – Material Safety Data Sheet Product Identification Product Name Oxygen Sensor Series - PSR, GPR, AII, XLT Synonyms Electrochemical Sensor, Galvanic Fuel Cell Manufacturer Advanced Instruments Inc., 2855 Metropolitan Place, Pomona, CA 91767 USA Emergency Phone Number 909-392-6900 Preparation / Revision Date January 1, 1995 Notes Oxygen sensors are sealed, contain protective coverings and in normal conditions do not present a health hazard.
Advanced Instruments Inc. Conditions to Avoid KOH = None or Acetic Acid = Heat Spill or Leak Steps if material is released Sensor is packaged in a sealed plastic bag, check the sensor inside for electrolyte leakage. If the sensor leaks inside the plastic bag or inside an analyzer sensor housing do not remove it without rubber or latex gloves and safety glasses and a source of water. Flush or wipe all surfaces repeatedly with water or wet paper towel (fresh each time).
Advanced Instruments Inc. Appendix A Electrical connections require an approved explosion proof sealing fitting and packing around wires and cables (for incoming power for the analyzer electronics, power failure alarm relays, set point alarm relays and 4-20mA signal output) coming into and out of the explosion proof enclosure that houses the interconnection PCB. Further full compliance with hazardous area electrical code requires the wires and cables to be protected by conduit.
Advanced Instruments Inc. Appendix B Correlating Readings - LCD Display and 4-20mA Output In rare instances the 4-20mA signal output may not agree to the reading displayed by the LCD. The Output Zero and Output Span features enable the user to adjust the 4mA signal output to correlate with the reading displayed by the LCD. For optimum accuracy make two separate adjustments as follows: 1. OUTPUT ZERO feature: To adjust the 4mA signal output and requires zero gas. 2.
Advanced Instruments Inc. 11. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT ZERO. 12. Press the ENTER key to select the highlighted menu option. 13. The following display appears: 100.0 OUTPUT ZERO OFFSET PRESS UP OR DOWN TO CHANGE VALUE ENTER TO SAVE MENU TO RETURN 14. Enter the calculated adjustment value. Note: Once the initial adjustment is made and checked at the PLC it may be necessary to fine tune the initial adjustment by repeating.
Advanced Instruments Inc. 100.0 OUTPUT SPAN OFFSET PRESS UP OR DOWN TO CHANGE VALUE ENTER TO SAVE MENU TO RETURN 27. Enter the calculated adjustment value, refer to example described above. Note: Once the initial adjustment is made and checked at the PLC it may be necessary to fine tune the initial adjustment by repeating. Any additional percent error must be added or subtracted from the initial adjustment value 064.0 OUTPUT SPAN OFFSET PRESS UP OR DOWN TO CHANGE VALUE ENTER TO SAVE MENU TO RETURN . 28.
