The ZrO2 flue gas probe AMS 3211-700 is designed for process applications with temperatures of up to 1400 °C in combination with a dust load of less than 2 g/m3.
A pitot tube feeds the process gas to the ZrO2 sensor which is built into the flange of the probe AMS 3211-700. A bore hole in the head of the probe provides ambient air as reference air for the sensor. Due to this unique construction the high temperature probe AMS 3211-700 does not require instrument air during the measurement.
Additional product features:
- immersion depth up to 2000 mm
- pitot tube made of stainless steel 1.4841 or Kanthal depending on the process temperature
- longer life expectancy of the ZrO2-sensor due to the reduced thermal load
- fast and easy sensor replacement
- flanges in DIN or ANSI sizes available
- continuous monitoring of sensor signal, -heater and measuring value on plausibility by the transmitters AMS 3220 or AMS 5200
- back-purge and auto-calibration features are available as options
Technical data
ZrO2 probe | AMS 3211-700 |
---|---|
Measuring principle | ZrO2 probe with Pt-electrodes |
Application | Residual oxygen in flue gas |
Construction | ZrO2 sensor installed in the sensor flange Gas supply to the sensor by pitot tube with outlet of the sample gas back into the process |
Flue gas temp., max. | 1400 °C |
Dust content (flue gas) | max. 2 grams / Nm3, dry |
Flue gas velocity | > 2 m/s |
Time for pre-heating | ~ 10 Minutes |
T90-Time | < 20 Seconds |
Reaction time | < 5 Seconds |
Probe length | 300 – 2000 mm |
Material | Kanthal |
Installation in the stack | any |
Connecting flanges | DN 80 PN 16, DN 100 PN 16 |
Protection | IP65 |
Reference air supply | by diffusion of ambient air to the sensor through a hole in the probe head |
Calibration gas supply | by separate pneumatic unit |
Weight | ca. 6,5 kg |
Accessories | |
Transmitter | AMS 5200 / AMS 3220 in housing IP 65 |
Pneumatic unit | GRP housing, Dimensions: 600 x 600 x 200 mm / |
800 x 600 x 300 mm, autocalibration optional | |
Version: AMS 3211-700 E V-2013-07 |