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The major advantage of laser-based measurement is the absence of direct contact and moving parts. This provides low maintenance and precise and quick results. The instruments analyze absorption. By sending a laser beam through the gas flow, we can measure the loss of light. We then know what has been absorbed and can calculate the concentration of gas in parts per million (ppm).
As the first in the world, NEO Monitors has developed a solution for measuring Hydrogen in-situ using traditional infrared tunable diode laser absorption spectroscopy. The underlying technology has already been used successfully for a manifold of industrial applications.
The NEO Monitors LaserGas III HF OP consists of a transmitter and receiver unit that are mounted opposite each other at distances up to 100 meters. The laser light is sent from the transmitter to the receiver and any HF concentration changes along the optical path from the transmitter and receiver are detected in real-time.
NEO Monitors LaserGas™ III Open Path NH3 Gas Detector is specifically designed for service in hazardous areas. The LaserGas™ III NH3 OP consists of a transmitter and receiver unit that is mounted diametrically opposite each other at distances up to 100 meters. The laser light is sent from the transmitter to the receiver and any NH3 concentration changes along the optical path from the transmitter to the receiver are detected in real-time.
The LaserGas III SP is the most reliable gas sensor with all electronics designed according to IEC 61508 and SIL 2 (safety integrity level). Based on the fully digital Gen. 3 compact LaserGas electronics. The LaserGas III SP O2 consists of a transmitter and receiver unit (mounted diametrically opposite each other) to measure the average gas concentration along the optical line-of-sight. Path lengths are typically from 0.5 to 20 meters.
NEO Monitors LaserGas II Open Path (OP) Monitor is a compact, high performance gas analyser for long distance monitoring in ambient air. Measurement lengths of up to 1000 m. The NEO LaserGas II OP Monitor utilises a transmitter / reflector configuration to accurately measure the average gas concentration along the optical line-of-sight.
NEO Monitors LaserGas II utilises Tuneable Diode Laser Absorption Spectroscopy (TDLAS) for in-situ measurement in stacks, ducts, or reactors with typical path lengths in the range 0.5 to 20 meters. By-pass and extractive configurations are also possible. The LaserGas II SP compact design comprises the transmitter unit with laser module; collimating optics, and main electronics and the receiver unit with focusing lens, photo detector and receiver electronics.
This NEO Monitors LaserGas II SP analyser feature a focused laser beam, which enables the instrument to measure through very thin nozzles (< 10mm diameter). For applications with continuous purge to prevent dust on the analyser lens, the SP Compact requires very small purge flow. With optional internal desiccants these monitors can also be optimized for in-situ measurement of trace levels of atmospheric gases (O2 and H2O).
The new NEO LaserGas III portable analyser is compact, lightweight, and battery powered for on-site HF measurement. With an on-board pump and connections for Teflon tubing, the target gas is continuously transferred into the internal measurement cell. Due to the digital low power design, the analyser is operational for an entire shift with one battery charge. Other gases such as NH3, HCl, and H2S will be implemented consecutively and are available on request.
The NEO Monitors LaserGas II Multipass (MP) Monitor employs a multipass (Herriott) cell concept to combine long measurement path lengths with a compact analyser design for optimum performance. Connecting power and sample gas tubes is all that is required during installation. In certain applications filtering and conditioning of the sample gas may be required.