46 Air Monitoring
New humidity and temperature transmitter can operate at -40 to 180 °C
The EE23 industrial transmitters from E+E Elektronik measure relative humidity and temperature and also calculate the dew point and frost point temperature. The new model EE23-T5 is suitable for a temperature range of -40 °C to 180 °C (-40 °F to 356 °F) and thus expands the application range of the proven transmitter series. The high-quality E+E humidity sensor with optional sensor coating ensures most accurate and long-term stable measurements.
The EE23 series includes models for wall or duct mount as well as different remote probe versions. This makes the transmitter series particularly versatile. Depending on requirements, the devices are available with a robust IP65 / NEMA 4 rated polycarbonate or metal enclosure.
The three parts enclosure design facilitates easy installation, service and replacement of the EE23. The enclosure consists of the back cover with the terminals for wiring, the pluggable active part with the electronics and the probe, and the front cover. For service only the active part needs to be replaced, while the back cover with the wiring remains untouched.
The E+E proprietary coating protects the sensing elements against corrosive and electrically conductive pollution, which leads to outstanding long-term stability even in harsh environment. There is also a wide choice of fi lter caps available.
The measured data is provided on two current or voltage outputs. An optional relay can be used for alarm and control tasks. Adisplay and an integrated power supply module are further optional features of the EE23 devices.
The user can easily perform a two-point humidity and temperature adjustment. The analogue outputs and the relay output can be freely confi gured. For More Info, email:
47546pr@reply-direct.com Formaldehyde analyser is the perfect combination of ease of use, reliability and accuracy
The In’Air µF-1 formaldehyde analyser from In ‘Air Solutions is a compact and portable analyser (6 Kg). It can be used for a wide variety of applications including industrial hygiene monitoring, concentration level monitoring, building management, quantifi cation of formaldehyde emissions from materials and also analysis of gaseous and aqueous solutions. The In’Air µF-1 enables continuous, real-time formaldehyde analysis, as well as relative humidity and temperature measurement.
This analyser was developed in collaboration with the CNRS and the University of Strasbourg. The focus has been on creating an instrument that is easy to use and very accurate. The In’Air µF-1 operates without carrier gas and consumes a small volume of reagent. The analyzer enables detection limits in the ppb range to be reached without interference and with a time resolution of only a few seconds. The control software, via the colour touch interface, allows the instrument to be controlled and the results to be displayed in real time. There are two modes: “standard” and “expert” from which operators can work. An additional reprocessing software allows on the one hand to reprocess the data simply and effi ciently and on the other hand to generate analysis reports.
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The installation of the In’Air µF-1 is simple: the device can be deployed in less than 5 minutes. Maintenance and calibration are also designed for ease of use. For More Info, email:
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Reliable and economic airborne molecular contamination for clean rooms
Airborne molecular contamination (AMC) can be damaging to both products and industrial processes, making it essential to monitor and control, especially in an environment such as a clean room at a semiconductor fabrication plant (fab).
AMC is chemical contamination in the form of vapours or aerosols that can be both organic or inorganic, and it includes everything from acids and bases to organometallic compounds and dopants. These chemical vapours can be emitted from a wide range of sources, including cleanroom materials, make-up air, process chemicals, operating personnel, cooling systems and even the outgassing of certain aging materials
There are primarily two types of AMC: internal and external. Internal sources of AMC involve process chemicals, accidental chemical spills, operating personnel and off-gassing cleanroom construction materials like fl oor tiles, walls and sealants. External sources include factory, agricultural and automobile exhaust emissions.
AMCs usually enter a fab via the make-up air handling system. Ammonia contamination can be a serious threat. One of the most sensitive steps in the semiconductor manufacturing process is the photolithography process which uses dangerous acids such as HCl, HF and SO2
etc.
ETG’s new Orion 3100, can be used as a potable or fi xed monitor and will monitor NHS3, HCl and HF by Optical Feedback Cavity Enhanced. Absorption Spectroscopy (OFCEAS) and SO2
by Pulsed
Fluorescence. OFCEAS offers operators improved sensitivity, increased signal intensity, reduced signal noise improved response linearity , direct intensity measurement , self-referencing device , self-stabilisation , self-standardisation, and rapid response (measurements reported each second).
The Orion 3100 is extremely reliable and easy to operate and set up and has no need for consumables, it can be controlled remotely via the Internet. This capability allows the user to operate the analyser using a web browser
anywhere.This instrument offers high sensitivity and precision – allowing for ultra-trace gas detection, despite a signifi cantly lower cost of ownership than with many competing technologies. In addition there are no consumables required and Orion 31000 can monitor up to 60 sample locations with an exceptionally low cost per sample ratio.
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IET November / December 2018
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