Flue Gas Probes
General Information
ZIROX flue gas probes (SS31) are robust sensors which serve the λ-determination in large-scale firing plants as well as the measurement of oxygen partial pressure of furnace atmosphere.
The probes are calibration-, drift- and maintenance-free. During measurements in reducing atmosphere, a falsification of the gas composition caused by cooling of the measuring gas in a suction line does not occur. An integrated heater provides the working temperature. The use of high-quality components and materials guarantees high long-term stability.
Applications
- Flue gas measurements in power plants
- Process gas measurements
Technical Data Oxygen Probe SS31H
Length | 300...1800 mm |
Diameter | 25 mm |
Weight | 1...3.5 kg |
Material | 1.4841 |
Dimension clamp head | 75 x 80 x 60 mm |
Clamps | 5 x Phönix MBK 2,5/E |
Protection degree | IP52, IP65 on request |
Power supply | 36 V (DC oder AC) |
Heater resistance AC / DC | 8 Ohm |
Heating current AC / DC | 4.5 A |
Heating power AC / DC | 160 VA |
Heater control | max. cycle time at PWM 500 ms |
Range | -0.01...20.6 Vol.-% O2 |
Accuracy | < 5 % rel. error |
Working temperature | 700...800 °C |
Offset | -2 m...-10 mV |
Sensor voltage (5.0 Vol.-%, 800 °C) | -33.1 mV |
Thermocouple | type B (800 °C corresponds to 3.2 mV) |
Flow measuring gas | max. 10 m/s |
Reference gas | ambient air |
Flow reference gas | 5...10 l/h |
Clamp assignment: | |
(1) Ground | AGND |
(2) Sensor voltage | -Uz |
(3) Thermal voltage | +Ut |
(4) Heating | UH |
(5) Heating | UH |
Mounting recommendation:
- stuffing box or cutting ring fitting
Option:
- Test gas channel (for in-situ check of the probe)
- Immersion sleeve (probe protection at gas flow > 10 m/s)
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