I. Introduction
In the monitoring of denitration process gas, the detection of the escape ammonia (residual ammonia) concentration at the outlet is very important, because escape ammonia is one of the indicators reflecting and evaluating the denitration efficiency. At the same time, the excess ammonium salt generated by the escape ammonia will seriously affect the subsequent air pre-conditioner And other equipment are running normally, so NH3 escape monitoring is also the focus and difficulty of the current flue gas monitoring in the domestic denitration process.
II. Specifications
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Gas |
Range |
Resolution |
Repeatability |
Linearity |
Response time |
Drift |
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NH3 |
0-10ppm |
0.1ppm |
≤1%FS |
≤2%FS |
≤1S |
≤ 1%FS |
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Warm up |
30min |
Digital output |
RS232/485 |
analogue |
4-20mA max load 900Ω |
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Power supply |
AC100-240V/47-63Hz 3KW |
Replay output |
Load capacity：AC/DC 4V/1A；concentration limitation alarm、light intensity abnormal alarm, laser detector temperature abnormal alarm |
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Optical path length |
1-3 meters |
Sampling gas temperature |
≥10℃ non-condensing |
Sampling gas pressure |
Atmosphere ±10kPa |
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Gas flow |
≤6L/min |
Ambient temperature |
-20~55℃ |
Ambient pressure |
70kPa-120kPa |
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|
Purging gas |
0.4-0.6MPa compressed air or N2 |
Protection classe |
IP65 |
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Dimension |
1800X800X650mm |
New weight |
120kg |
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III. Applications
SNCR/SCR process
II. Specifications
|
|
||||||||||
|
Gas |
Range |
Resolution |
Repeatability |
Linearity |
Response time |
Drift |
||||
|
NH3 |
0-10ppm |
0.1ppm |
≤1%FS |
≤2%FS |
≤1S |
≤ 1%FS |
||||
|
|
||||||||||
|
Warm up |
30min |
Digital output |
RS232/485 |
analogue |
4-20mA max load 900Ω |
|||||
|
Power supply |
AC100-240V/47-63Hz 3KW |
Replay output |
Load capacity：AC/DC 4V/1A；concentration limitation alarm、light intensity abnormal alarm, laser detector temperature abnormal alarm |
|||||||
|
|
||||||||||
|
Optical path length |
1-3 meters |
Sampling gas temperature |
≥10℃ non-condensing |
Sampling gas pressure |
Atmosphere ±10kPa |
|||||
|
Gas flow |
≤6L/min |
Ambient temperature |
-20~55℃ |
Ambient pressure |
70kPa-120kPa |
|||||
|
Purging gas |
0.4-0.6MPa compressed air or N2 |
Protection classe |
IP65 |
|||||||
|
Dimension |
1800X800X650mm |
New weight |
120kg |
|||||||
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