Tuneable Diode Laser Technology

Specifically designed for extractive trace analysis applications, the new SERVOTOUGH LaserExact gas analyser from Servomex delivers the exceptional benefits of Tuneable Diode Laser (TDL) Technology within a robust and compact analyser design.

Able to detect a wide range of gases including O2, HCl, HF, NH3, CO, CO2, H2O, H2S, HCN, NO, N2O, CH4 and other hydrocarbons, the LaserExact combines an advanced multipass long path length cell with Servomex’s superior High Frequency (HF) Frequency Modulated (FM) signal processing. The result is unsurpassed low ppb detection limits for most gases, making the LaserExact ideal for the measurement of trace gases offline.

The LaserExact’s advanced TDL technology delivers a fast response time, highly stable performance and minimal interference from background gases. With no moving parts or consumables, the LaserExact minimises operating costs, while the stable, drift-free performance reduces the downtime incurred by the calibration requirements of other analyser technologies.

The LaserExact utilises advanced peak-locking technology, which eliminates drift over extended operational periods by automatically tracking on the measured gas absorption line or - in applications where the measured gas is not normally present - tracking another absorption line.

Designed for easy installation and integration, the LaserExact is immediately ready for operation following the connection of power, sample gas and optional purge gas. With gas concentrations provided as 4-20mA outputs with the option of Ethernet communication, the LaserExact delivers immediate class-leading performance that meets ATEX and Class1 Div2 CSA approvals.

Applications include measurement of H2S and CO2 in natural gas, O2 in flare gas recovery systems, trace O2 in glove box applications, corrosive combustion emission gases, and H2S emissions monitoring for biogas, pulp & paper and industrial gas production.