Air Monitoring 21
New Radio Provides Licence-Free Datalogger Communications in Europe and Elsewhere
The RF422 is an 868 MHz SRD860 radio, from Campbell Scientifi c (UK), is designed to provide license-free operation for wireless serial communications in Europe. The RF422 transmits data at 10 kbps with a maximum power of 25 mW, and it employs listen-before- talk (LBT) and adaptive-frequency-agility (AFA) to provide a robust link of up to 100 m within buildings and 5 km with full line-of-sight. The RF422 supports point-to-point and point-to- multipoint datalogger communications and PakBus repeater operation.
The RF422 is part of the RF407-series of radios that includes: RF407: North America (FCC & IC), 902 to 928 MHz; RF412: Australia (ACMA RCM), 915 to 928 MHz; RF422: Most of Europe and some of Asia (ETSI), 863 to 873 MHz.
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Multi Component Analyser for Continuous Pollutant Measurement
The multi component analyser MCA 14, from Dr. Födisch Umweltmesstechnik AG (Germany) serves the continuous measurement of pollutants in fl ue gas (e.g. CO, CO2 SO2
, N2 , O2 O, NO2 , NH3 , CH4 , HCl, H2 O, , NO) as well as the continuous process control.
The MCA 14 is applicable all-purpose for measurement of emissions, raw gases or processes. As system in regulatory and operational emission measurement
systems, amongst others, it serves the exhaust concentration control in combustion plants with different types of fuel, the thermal waste treatment, the combustion optimisation and the process management control.
The MCA 14 has a robust chassis design, where the photometer is structurally separated from the control and computer electronics.
Highlights of the device include: continuous, extractive measurement of up to eight infrared components, compact 19“ insertion for mounting in customer-provided control cabinet, hot gas measurement (without gas cooler), integrated control, integrated zero gas provision, self-control (additional control of inlet temperature), and fi rst-class price-performance ratio.
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New Laser Gas Analyser for Online Environmental Monitoring
Based on unique tunable diode laser absorption spectrum technology, Hangzhou Zetian Technology Co., Ltd. (China) has designed and developed the LGT series laser gas analyser for online industrial analysis and online environmental monitoring, with different sampling options including in- situ, extractive, rack-mounted type etc.
LGT-100 is a fl ameproof in-situ type analyser capable of analysing O2 CH4
, H2 , CO, NH3 , CO2 ,
O, HCl, HF and other gases in various and complex conditions. The LGT- 100 laser gas analyser can be directly installed across stack, with the advantages of uncomplicated sampling, no pre-treatment system, simple construction and no moving parts. The analyser’s OLED screen benefi ts from low power consumption, a wide viewing angle and excellent low temperature resistance – it can display properly even at -400
C. Also, the highly-sensitive Hall brand button quickly responds to magnetic pen operation.
In addition, LGT-100 also has the following advantages:
• In-situ installation with real-time measurement
• no interference from background gas and dust
• automatic compensation of temperature and pressure
• easy optical path alignment with XY direction non-coupling adjustment tools (Patented)
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• and easy maintenance: modular design enables the laser to be replaced on site if damaged.
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www.envirotech-online.com IET Annual Buyers’ Guide 2016/17
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