用户手册目录Model 755A Oxygen Analyzer1Essential Instructions2Rosemount Analytical Inc., Process Analytic Division2Table of Contents3List of Illustrations6List of Tables6List of Drawings7Preface9Definitions9Intended Use Statement10Safety Summary10Authorized Personnel10General Precautions for Handling and Storing High Pressure Gas Cylinders12Documentation13Compliances131-0 Description and Specifications151-1 Overview151-2 Oxygen Range on Front Panel Digital Display151-3 Oxygen Ranges for Recorder Readout161-4 Recorder Voltage and Current Outputs161-5 Automatic Pressure Compensation161-6 Options16a. Alarm16b. Case Mounting16c. Electrical Power161-7 Specifications18a. General18b. Sample18c. Electrical19d. Physical192-0 Installation212-1 Unpacking212-2 Location and Mounting212-3 Voltage Requirements212-4 Electrical Connections21a. Line Power Connections21b. Recorder Connections22c. Potentiometric Output22d. Isolated Current Output (Optional)24e. Output Connections for Dual Alarm Option24f. Alarm Output Connections24g. Alarm Relay Characteristics252-5 Calibration Gases27a. Zero Calibration Gas27b. Downscale Standard Gas27c. Upscale Standard Gas272-6 Sample Handling27a. Sample Temperature Requirements27b. Sample Pressure Requirements - General27c. Normal Operation at Positive Gauge Pressures29d. Operation at Negative Gauge Pressures29e. Sample Flow Rate29f. Corrosive Gases302-7 Leak Test302-8 Purge Kit (Optional)313-0 Operation333-1 Overview333-2 Selection of Recorder Oxygen Range33a. Recorder Oxygen Range Selection Procedure33b. Readout of Applied Zero-Suppression Voltage on Digital Display353-3 Startup Procedure363-4 Calibration36a. Calibration Using Digital Readout for Oxygen Readout36b. Calibration Using Recorder for Oxygen Readout36c. Calibration with Downscale and Upscale Standard Gases40d. Calibration of Automatic Pressure Compensation403-5 Compensation for Composition of Background Gas42a. Oxygen Equivalent Values of Gases42b. Oxygen Equivalents of Gas Mixtures42c. Computing Adjusted Settings for Zero and Span Controls423-6 Dual Alarm Option44a. Initial Calibration and Selection of Setpoints for Alarms44b. Selection of Deadband453-7 Routine Operation463-8 Effect of Barometric Pressure Changes on Instrument Readout463-9 Calibration Frequency464-0 Theory474-1 Principles of Operation47a. Magnetic Displacement Force47b. Physical Configuration of Detector/Magnet Assembly484-2 Variables Influencing Paramagnetic Oxygen Measurements51a. Pressure Effects51b. Temperature Effects51c. Interferents51d. Vibration Effects514-3 Electronic Circuitry52a. Detector/Magnet Assembly52b. Control Board and Associated Circuitry52c. Case Board53d. Isolated Current Output Board54e. Alarm545-0 Circuit Analysis555-1 Overview555-2 +/- 15VDC Power Supply555-3 Case Heater Control Circuit555-4 Detector Heater Control Circuit605-5 Detector Light Source Control Circuit615-6 Detector with First Stage Amplifier and Pressure Compensation Circuits62a. Pressure Compensation Circuit63b. Pressure Signal Circuit63c. Positive and Negative Reference Voltage Circuits635-7 Buffer Amplifiers U10 and Associated Anticipation Function655-8 Digital Output Circuit665-9 Analog Output Circuits for Recorder and Alarms666-0 Service and Maintenance696-1 Initial Checkout with Standard Gases696-2 Detector Component Checks70a. Detector70b. Source Lamp70c. Photocell70d. Suspension706-3 Detector Component Replacement71a. Detector Replacement716-4 Source Lamp Replacement73a. Photocell Replacement and Adjustment756-5 Heating Circuits75a. Case Heater Control Circuit75b. Detector/Magnet Heating Circuit767-0 Replacement Parts777-1 Circuit Board Replacement Policy777-2 Selected Replacement Parts777-3 Matrix788-0 Return of Material798-1 Return of Material798-2 Customer Service798-3 Training79Appendix A - Vaisala Barometric Pressure Transducer81A-1 Overview81A-2 Circuit Function81A-3 Installation81A-4 Adjustment82A-5 High Altitude Version (Option)82Warranty83Emerson Process Management - Worldwide84Figures11-1 Model 755A Oxygen Analyzer151-2 Model 755A Component and Adjustment Locations172-1 Electrical Connections222-2 Control Board232-3 Connections for Potentiometric Recorder with Non-Standard Span232-4 Model 755A Connected to Drive Several Current-Activated Output Devices242-5 Typical Alarm Settings262-6 Relay Terminal Connections for Typical Fail-Safe Application262-7 Connection of Typical Gas Selector Panel to Model 755A Oxygen Analyzer282-8 Installation of Purge Kit (Optional)323-1 Model 755A Front Panel Controls343-2 Model 755A Internal Adjustments Locations393-3 Calibration by Pressure Decrease Setup414-1 Spherical Body in Non-Uniform Magnetic Field484-2 Functional Diagram of Model 755A Paramagnetic Oxygen Measurement System494-3 Detector/Magnet Assembly505-1 Schematic - Two-Comparator OR Circuit565-2 Schematic - Ramp Generator575-3 Schematic - Case Heater Control Circuit585-4 Schematic - Case Heater Circuit595-5 Schematic - Detector Heater Control Circuit605-6 Schematic - Detector Light Source Control Circuit615-7 Schematic - Detector with First Stage Amplifier and Pressure Compensation Circuits645-8 Schematic - Pressure Signal and Reference Voltage Circuits645-9 Schematic - Buffer, Anticipation, and Digital Output Circuit655-10 Schematic - Simplified Analog Output Circuit for Recorder (showing three ranges)686-1 Detector/Magnet Assembly726-2 Detector/Magnet Assembly Wiring726-3 Detector Adjustment736-4 Modification of 633689 Connector Board for Compatibility with Replacement Lamp746-5 Lamp Alignment74x75Tables13-1 Standard Gases Recommended for Calibration of Various Oxygen Ranges on Analog Output373-2 Model 755A Internal Adjustments383-3 Oxygen Equivalents of Common Gases43Drawings1617186 Schematic Diagram, Case Board85617731 Pictorial Wiring Diagram, Model 755A86620434 Schematic Diagram, Current Output Board87632349 Installation Drawing, Model 755A88652219 Schematic Diagram, Control Board89652222 Schematic Diagram, Transducer90文件大小: 4.9 MB页数: 90Language: English打开用户手册