Category Archives: Codel


2. Measurement Principle – Gas flow is rarely laminar. Turbulence in the flow produces a series of swirling eddies and vortices that are transported with the bulk flow. Infrared radiation, emitted by a hot gas system, is characterised by a flickering signal resulting from the swirling effect of these vortices. Two infrared detectors, placed a […]


1.2. V-CEM5000 Basic Principles – The V-CEM5000 uses an infrared cross-correlation technique that requires no contact with the flue gases. The method used resembles flow measurement with chemical dye or radioactive tracers, where the velocity is derived from the transport time of the tracer between two measuring points a known distance apart. However, instead of […]

[[PDF]_Tunnel_tech_700_series_technical manual.pdf

TECHNICAL MANUAL Tunnel Tech 700 Series Tunnel Tech 701 – CO/NO/NO²/VIS Tunnel Tech 702 – CO/VIS/VIS Tunnel Tech 703 – CO/VIS Tunnel Tech 704 – NO/VIS Tunnel Tech 705 – NO²/VIS Tunnel Tech 706 – CO/NO²/VIS Tunnel Tech 707 – NO/NO²/VIS Tunnel Tech 708 – VIS Only Tunnel Atmosphere Monitoring System (CO/NO/NO²/Vis) 1.2. CO, NO, […]

[PDF]_Technical manual_Tunnel Tech 500 Series_manual

TECHNICAL MANUAL Tunnel Tech 500 Series Tunnel Tech 501 – CO/NO/NO2 Tunnel Tech 502 – CO/NO Tunnel Tech 503 – CO Tunnel Tech 504 – NO Tunnel Tech 505 – NO2 Tunnel Tech 506 – CO/NO2 Tunnel Tech 507 – NO/NO2 Tunnel Atmosphere Monitoring System (CO/NO/NO2) 2 Principles of Operation 2.1 Electro Chemical Cell – […]

G[PDF]_CEM4000 MCERTS Multi-Gas Analyser 1m & 2m Probe Versions

1.2. GCEM4000 Basic Principles The GCEM4000 analyser uses an in-situ probe set into a duct to measure the concentration of gases of interest. Figure 2 illustrates the arrangement. The in-situ tube includes a section that allows the diffusion of flue gases into the measurement zone or the dispersion of purge or calibration gas out of […]

[PDF]_Energytech 101/102 Technical Specifications.manual

The EnergyTech 101/102 Opacity Monitor is a single-pass transmissometer consisting of a visible light transmitter and receiver arrangement with digital data processing in a local display unit. The monitors can display data in either opacity, extinction or dust density in mg/m3 or normalized dust density in mg/Nm3. Energytech101-102_opacity_monitor.pdf

[PDF]_Energy Tech 203_Technical Manual

2. Measurement Principle 2.1. CO – The analyser comprises an infrared source assembly mounted on one side of the measurement chamber. On the opposite side of the measurement chamber is the receiver. – The source consists of a small black-body emitter and gas wheel assembly. The wheel is rotated by a stepper motor at a […]

[PDF]Energy Tech_100 Series_101/102_manual

2.3. Duct Work    The transmitter and receiver units are mounted on opposite sides of the duct, and interface with the site mounting flange. To protect operators, it is recommended that an isolating valve is used for ducts that operate higher than atmospheric pressure..[…]. Energytech_100_series_101-102_manual.pdf

[PDF]_Energy tech 301_Operating_Manual

3. Principles of Operation When a particle moving in a duct collides with (or passes near) a probe that is grounded to earth, a transfer of charge takes place from the particle to the conductor. This is known as tribo-electricity or frictional electrification and results in a charge being imparted to the probe…[…] Energy_tech_301_operating_manual

[PDF]_Energy Tech 401_Cross-Duct IR CO Analyser.manual

2.2 Principles / Modes of Operation – Gas levels are determined by measuring the absorption of infrared radiation, transmitted through the flue gas, in a wave band sensitive to absorption by the measurement gas. The EnergyTech 401 has two detectors; one measuring the radiation directly to provide a live output, sensitive to the measurement gas, […]