Anti-Erosion Zirconia Oxygen Analyzer Applied to the measurement of oxygen content in flue gas of severely eroded fluidized bed boilers, coal-fired boilers, and boilers with high temperatures.

Oxygen transmitter parameter requirements Display screen: LCD liquid crystal display, Chinese menu. Inductive buttons, no need to open the cover, operate directly on the glass panel. Display content: oxygen concentration, zirconia tube temperature, zirconia tube voltage value, output current value, sensor internal resistance, self-diagnosis information, etc. Operation language: Chinese (English customizable) Power voltage: 220VAC±10% Power frequency: 50/60Hz Heating power: ≤150W Range: 0.01%-25.00% (any setting from 5.00%~25%). Output signal: 4～20mA Signal interface: supports RS485/MODBUS protocol Bluetooth port: menu with expandable Bluetooth function Damping adjustment: damping coefficient can be set in the menu Measurement accuracy: ±1% of the range or ±0.1% of the reading O2 constant temperature: 700.0℃±0.2℃ (any setting between 500~900℃). Protection level: IP66 Calibration method: Two methods of manual calibration/automatic calibration are selected through the menu (automatic calibration requires a matching automatic calibration unit box). Data retention: has the function of output retention during calibration Automatic purging: automatic purging function in the menu, regularly automatically purging the filter ash. Installation method: wall-mounted installation Range drift: the drift within 12 months does not exceed 0.2% of the set range Stability: ≤±0.05% (instrument continuous verification 4h) Self-diagnosis and alarm function: has self-diagnosis function, including thermocouple reverse connection, thermocouple disconnection, heating abnormality, oxygen concentration alarm, temperature alarm. Response time: 90% response within 0.5 seconds. (Timing starts when gas enters the calibration gas inlet and the analog signal starts to change) Service life of oxygen transmitter: ≥5 years Probe technical parameter requirements Flue gas temperature: ≤800℃ (high-temperature flue gas can be customized) Flue gas pressure: -10～+50Kpa Flue gas flow rate: 0～50m/s Ambient temperature: -40℃～+80℃ Anhui Tianfen Instrument Co., Ltd. Tianfen™ Zirconia Oxygen Analyzer Instructions Zirconia battery resolution: <1ppm Insertion depth: 150-2000mm (customized according to customer requirements) Material: 304, 316L, 310S, HC (optional) Protective tube diameter: φ45mm (default), φ32mm, φ38mm, φ51mm Probe installation angle: horizontal installation or vertical downward installation Flange: JIS-5K-65-FF (standard), can be specified by the customer (DN50/DN65/DN80/DN100) Heating time: 5～15min (constant temperature 700.0℃). Sensor electrode: platinum electrode. Pressure resistance: normal use without leakage under the flue gas pressure of any combustion control condition, (sensor factory test pressure 400kpa zero leakage). Sensor zero potential: less than ±0.5mv (in air, at a constant temperature of 700.0℃). (long-term stable and non-drift) Sensor internal resistance: less than ±20 ohms (in air, at a constant temperature of 700.0℃). Calibration gas: 5% and 20.6% O2, the background gas is nitrogen (any standard gas between 1%~10% can be calibrated, and the linearity within the full range is less than 0.01%) Reference gas: air, no external reference gas source is required Probe filter: standard dust-proof precision filter Service life: ≥4