Siemens Oxygen Sensor QGO20 Series
Siemens Oxygen Sensor QGO20 Series measures residual oxygen in flue gases from natural gas or light fuel oil combustion systems. Designed for use with Siemens LMV52 and PLL52 for O2 trim control, it supports improved combustion efficiency in industrial boilers, burners and heat generation applications.
Product Details
Siemens Oxygen Sensor QGO20 Series
Siemens Oxygen Sensor QGO20 Series
The Siemens QGO20 Series is an oxygen sensor designed to measure residual oxygen content in flue gases generated by industrial combustion systems operating on natural gas or light fuel oil.
The QGO20 uses a Zirconium Dioxide (ZrO2) measuring cell and operates with the Siemens LMV52 burner control system and PLL52 O2 module. This combination enables residual oxygen monitoring and O2 trim control to help optimize combustion efficiency.
Key Features
- Measures residual oxygen concentrations from 0.2% to 20.9% O2.
- Zirconium dioxide oxygen measuring cell.
- Compatible with Siemens LMV52 and PLL52 control systems.
- Supports O2 trim control for improved combustion efficiency.
- Suitable for flue gas temperatures up to 300°C at the measuring point.
- Stainless steel sensor tube and mounting flange.
- Die-cast aluminium connecting head.
- Designed for installation with AGO20 flue gas collectors.
Available Models
- QGO20.000D17: AC 120 V supply voltage.
- QGO20.000D27: AC 230 V supply voltage.
Applications
The Siemens QGO20 is suitable for industrial heat generation systems fired by natural gas or light fuel oil, including industrial boilers and compatible burner systems equipped with LMV52 and PLL52 oxygen trim control.
Compatible Equipment
- Siemens LMV52 Burner Control
- Siemens PLL52 O2 Module
- Siemens AGO20 Flue Gas Collector
- Siemens AZL52 Display and Operating Unit
Installation Note: The QGO20 must be used with an AGO20 flue gas collector. Installation conditions, temperature limits and control system compatibility must comply with Siemens specifications.
Technical Specifications
Siemens QGO20 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Product Type | Oxygen Sensor |
| Series | QGO20 |
| Models | QGO20.000D17 / QGO20.000D27 |
| Measuring Principle | Zirconium Dioxide Measuring Cell |
| Measuring Range | 0.2–20.9% O2 |
| Supply Voltage D17 | AC 120 V ±15% |
| Supply Voltage D27 | AC 230 V ±15% |
| Mains Frequency | 50–60 Hz ±6% |
| Power Consumption |
Maximum 90 W Typically 35 W (Controlled) |
| Measuring Cell Temperature | 700°C ±50°C |
| Flue Gas Temperature | Maximum 300°C |
| Flange Temperature | Maximum 250°C |
| Connecting Head Temperature | Maximum 70°C |
| Flue Gas Flow Velocity | 1–10 m/s (with AGO20) |
| Permitted Fuels |
Natural Gas (H) Light Fuel Oil (EL) |
| Degree of Protection | IP40 (ensured through mounting) |
| Weight | Approx. 0.9 kg |
| Signal Cable | Shielded 6-Core Cable, Twisted Pairs |
| Maximum Cable Length | 100 m |
| Recommended Cable Length | Less than 10 m |
| Operating Humidity | Less than 95% RH |
| Installation Altitude | Maximum 2,000 m above sea level |
| Control Equipment | LMV52 + PLL52 |
| Mounting Accessory | AGO20 Flue Gas Collector |
Source: Siemens Data Sheet CC1N7842en, 27.02.2023
Dimensions
Documents & Downloads
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