Flue gas probes (SS28/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.
Applications
- Flue gas measurements in power plants
(TÜV-Approval according to "TA Luft, 13. und 17. BImSchV", Federal Immission Control Ordinance) - Process gas measurements
Technical Data Oxygen Probe SS28H/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 | 24 V (DC oder AC) 36 V (DC oder AC) |
| Heater resistance AC / DC | 5 Ohm 8 Ohm |
| Heating current AC / DC | 5 A 4.5 A> |
| Heating power AC / DC | 115 VA 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)