The G36P Oxygen Analyzer is a sophisticated instrument designed for monitoring oxygen content in various gas streams. It utilizes a zirconia sensor, which is a robust and reliable technology for oxygen measurement, suitable for a wide range of applications including inert gas, stack gas, and exhaust gas recirculation (EGR) systems. The analyzer is designed for front panel mounting and features a touch screen display for user interaction.
Function Description
The G36P Oxygen Analyzer's primary function is to accurately measure and display the oxygen concentration in a gas sample. Depending on the configuration, it can monitor O2 content in inert gas (N2 or CO2 based), stack gas, or EGR systems. The device processes the signal from a zirconia sensor, which generates an electrical charge proportional to the oxygen concentration. This signal is then displayed on the analyzer's screen.
The analyzer offers several operational modes and features:
- Main Menu: Displays current oxygen values and provides access to Graph, Information, Calibration, and Tools menus.
- Graph Menu: Shows a trend curve of log values (Y-axis) on a time scale (X-axis), allowing users to visualize oxygen concentration changes over time.
- Information Menu: Provides diagnostic information such as sensor status, temperature, raw sensor count, analog output values, relay output status, software version, alarm log, and run time.
- Calibration Menu: Facilitates calibration using known oxygen gases (zero and span calibration) or artificial oxygen signals.
- Tools Menu: Offers access to alarm manual reset, alarm logs, commissioning settings, touch panel calibration, and service functions (password protected).
- Commissioning: Allows for the setting of basic display parameters (date, time, auto return, alarm logbook), alarm limits (Low, High, High-High O2 levels, and associated delays), and analog input/output settings.
- Analog Input/Output: Supports active analog input signals (4-20 mA) and provides two analog output signals (4-20 mA) for remote monitoring or control.
- SD Card: Used for storage of historical trend data and logbook entries. It also allows for software updates and loading of default settings.
Important Technical Specifications
- Analyzer types: Inert Gas O2, Stack Gas O2, EGR O2 Analyzer.
- Sensor types: Zirconia sensor type SEN1 or SEN9.
- Measurement range: 0.0 % ... 21.0 % O2.
- Ambient temperature: 0°C ... 70°C.
- Ambient humidity: Up to 100 % at all relevant temperatures.
- Power supply: 24 VDC.
- Power consumption: Max. 40 VA per analyzer – recommended fuse: 4 AT.
- Sample flow: 0.2 ... 8.0 l/m.
- Sample temperature: SEN1: ≤ 250 °C; SEN9: ≤ 650 °C.
- Sample pressure: SEN1: max. 1 bar; SEN9: max. 4 bar.
- Digital display: Touch screen 71 x 39 mm.
- Digital signals: Active 4...20 mA – range selectable – default 0.0...25.0 %.
- Load output (max.): 600 ohm/24 VDC.
- Relays: 4 relays, volt free, 24 V AC/DC, 5 A.
- Alarm functions: Low or High O2 level – set point freely configurable; High-High O2 level – set point freely configurable; System failure alarm.
- Response time*: 90 % of measuring scale in less than 45 sec. with sample flow rate of 0.5 l/m sample line of 1 m.
- Repeatability: +/- 0.1 % of the measuring range.
- Linearity/Accuracy: +/- 0.5 % of the measuring range.
- Drift (one month): +/- 0.1 % of the measuring range.
- Dimensions: 95 x 178 x 71 mm (H×W×D).
- Cut-out dimensions: 75 x 155 mm (H x W).
- Weight (analyzer only): 0.8 kg without packaging.
- Enclosure: IP55 when the included gasket is mounted.
- Optional: O2 analyzer with pressure compensation module, BV’s product certificate.
- Certifications: CE, DNV, Bureau Veritas, Lloyd's Register Type Approvals.
Usage Features
The G36P Oxygen Analyzer is designed for ease of use with its touch screen interface.
- Intuitive Navigation: The menu structure (Main, Graph, Information, Calibration, Tools) allows for straightforward access to all functions.
- Real-time Monitoring: The Main Menu continuously displays the current oxygen value, providing immediate feedback.
- Historical Data Visualization: The Graph Menu enables users to view oxygen concentration trends over specific historical periods, aiding in process analysis and troubleshooting.
- Configurable Alarms: Users can set specific alarm limits (Low, High, High-High) and delays to suit their application requirements, ensuring timely alerts for critical oxygen levels.
- Flexible Calibration: The analyzer supports both known oxygen gas calibration (zero and span) and artificial oxygen signal calibration, offering flexibility in maintenance.
- Remote Connectivity: Analog output signals (4-20 mA) allow for integration with external control systems or remote displays, enhancing operational flexibility.
- Data Logging: The SD card functionality provides a convenient way to store and retrieve historical data and alarm logs, which is crucial for compliance and performance analysis.
- Password Protection: Service and commissioning settings are password-protected to prevent unauthorized changes, ensuring system integrity.
Maintenance Features
The G36P Oxygen Analyzer incorporates several features to facilitate routine maintenance and troubleshooting.
- Self-Diagnostics: The Information Menu provides sensor diagnostic status (OK, error codes for sensor failure), aiding in quick identification of issues.
- Sensor Replacement: The zirconia sensor is a consumable part with a typical lifetime of over one year. The manual provides clear instructions for safe sensor replacement, emphasizing the hot surface of the sensor housing.
- Calibration Procedures: Detailed calibration procedures for zero and span gases, as well as artificial oxygen signals, are provided to ensure accurate measurements over time. The analyzer automatically calibrates every 6 hours using the artificial calibration in the default configuration for Stack Gas Oxygen Analyzers.
- Software Updates: The SD card allows for easy software updates, ensuring the analyzer remains current with the latest features and improvements.
- Default Settings Reload: In case of configuration issues, default settings can be reloaded from the SD card, simplifying recovery.
- Gas Connection Checks: Regular checks of gas connections are recommended to prevent leaks and ensure accurate measurement results.
- Troubleshooting Guide: A comprehensive troubleshooting section in the manual helps users diagnose and resolve common issues, such as display problems, incorrect oxygen levels, and touch panel errors.
- Spare Parts List: A detailed list of spare parts with part numbers and descriptions is provided, making it easy to order necessary components for repair or replacement. This includes sensors, sensor cables, sensor housings, fuses, and the instruction manual itself.
- Cleaning: The analyzer's LCD screen and housing can be cleaned with a soft, damp cloth and a neutral detergent, ensuring optimal visibility and hygiene.
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