Complex combustion systems and processes require besides a fast in-situ O2 measurement to control the combustion, a quality measurement to adjust the combustion system at a level which avoids the generation of CO. The control level around the point of CO generation is the optimum of the combustion.
For this application AMS offers the flue gas probe AMS 3211-1500 with a dual sensor for the measurement of O2and unburnt combustibles (CO, H2 und hydrocarbons). The unburnt combustibles are measured as CO equivalent. Due to the fast response of the dual sensor both measuring values O2 and COe can be used for burner optimization.
The constuction of the flue gas probe AMS 3211-1500 is identical to the In-Line probe AMS 3211-500 with respect to the available dimensions and materials. The dual sensor is installed in the probe Tipp with ensures fast response. The operating temperature is up to 500 °C.
The dual sensor for the measurement of O2 and COe can be installed in any probe model of AMS.
Additional product features:
- Immersion depth of 150 mm to 3000 mm
- Probe tubes made of ceramic or Kanthal, depending on process temperature
- Longer life expectancy of the ZrO2 sensor due to the reduced thermal load
- Fast and easy sensor replacement
- Flanges are available in DIN or ANSI sizes
- Continuous monitoring of sensor signal, heater and measuring value on plausibility by the transmitter AMS 3220
- Back-purge and auto-calibration features are available as options
Technical data
| ZrO2 probe | AMS 3211-1500 |
|---|---|
| Measuring principle | O2-COe-Sensor |
| Application | Residual oxygen in flue gas |
| Construction | ZO2-COe-Sensor installed in the tip of the probe with stainless steel sinter metal filter screwed on |
| Flue gas temp., max. | < 500 °C, short time to 550 °C |
| Dust content (flue gas) | max. 5 grams / Nm3, if higher shield to protect against abrasion or separate protecting tube |
| Flue gas velocity | max. 20 m/Sec., if higher shiled to protect against abrasion or separate protecting tube |
| Time for pre-heating | ~ 10 Minutes |
| T90-Time | < 10 Seconds |
| Reaction time | < 2 Seconds |
| Probe length | 150 – 3000 mm |
| Material | Stainless steel 1.4541, Inconel 600 |
| Installation in the stack | pointing downward |
| Connecting flanges | DN 65 PN 16, DN 80 PN 16 (larger on request) |
| Protection | IP65 |
| Reference air supply | by separate pneumatic unit |
| Calibration gas supply | by separate pneumatic unit |
| Weight | ca. 6,5 kg |
| Accessories | |
| Transmitter | AMS 3220 in housing IP 65 Transmitter in twin-configuration |
| Pneumatic unit | GRP housing, Dimensions: 800 x 600 x 300 mm Back purge, Auto-calibration |
| Version: AMS 3211-1500 E V-2013-07 |