Reliability, accuracy and very short response times are the decisive features of the GM700 laser gas analyzer. Based on the TDLAS (tunable diode laser absorption spectroscopy) principle, the GM700 measures different gas components, such as NH3, HF, HCl or H2O, by specific light absorption. In-situ measurement is particularly well-suited to the rapid determination of gas concentrations in process control and emission monitoring.
Ammonia slip measurement in DeNOx plants
Emission monitoring of hydrogen fluoride in aluminum smelters
HCI measurement in combustion plants
Device properties:
High selectivity due to high spectral resolution
Short response times
No calibration required
No moving parts: minimal wear and tear
No gas sampling or conditioning required
优势
In-situ measurement directly in the process for nearly uncompromised measured values
Measuring probe or cross-duct types for very good adaptation to the requirements of your measuring task
High reliability during operation
Can also be used in harsh ambient conditions
Enables the detection of quick and short-term process fluctuations
HF: 0 ... 5 mg/m³ / 0 ... 25 mg/m³ Suitability-tested in the cross-duct type
Measuring range
NH3 (up to 20% H2O by volume): 0 ... 25 ppm / 0 ... 4,000 ppm NH3 (up to 40% H2O by volume): 0 ... 25 ppm / 0 ... 100 ppm HCl: 0 ... 7.5 ppm / 0 ... 3,000 ppm HF: 0 ... 3 ppm / 0 ... 2,000 ppm Measuring ranges refer to 1 m measuring path Measuring ranges depend on application and device version
Ambient temperature range
–20 °C ... +50 °C Depends on parameterization; temperature change max. ±10 °C/h
Ambient humidity
≤ 95 % Relative humidity; non-condensing
Degree of protection
IP65/IP66/IP67
Conformities
Only for HF Approved for plants requiring approval 2001/80/EC (13. BImSchV) 2000/76/EC (17. BImSchV) 27. BImSchV German Clean Air Regulations EN 15267 EN 14181
The GMK03 gas test unit is used to test the linearity of the measurement results of gas analyzers as required for a metrological quality test (e.g. for QAL2, QAL3). For this purpose, the GMK03 gas test unit can simulate several graded test gas concentrations with a single (suitable) test gas.
With our broad range of solutions Endress+Hauser has proven applicability in the entire power generation process, from gas flow to combustion efficiency to emissions monitoring.
