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CEL-022 MKIII (Opacity Monitor)

The CEL-022 MKIII is an optical instrument designed to measure the visible opacity (0-100%) of exhaust gas in a duct, stack, or flue; typically the exhaust gas from an industrial combustion process or air filtration system.
Key points
  • In situ measurement directly in exhaust gas flow using the widely accepted light transmission technique
  • Measurement reading as % Opacity
  • Free utility software for PC based setup, control, and data logging
  • Rugged 316 stainless steel construction
  • Choice of interface options enabling easy integration
  • Optional Operator Interface with different mounting Configurations
  • Modulated green LED source for long lifetime stability and immunity to ambient light
CEL-022 MKIII Brochure
SKU: CEL-022 Categories: ,

Description

The CEL-022 MKIII is available with or without an Operator Interface (control unit), so for the most cost effective monitoring solution the CEL-022 MKIII can operate as a “stand-alone” instrument consisting of the Transmitter head (TX) and Receiver head (RX), with all electrical connections (including outputs such as the alarm relays, 4-20mA and ModBus) being made inside the RX head. As a stand-alone instrument the CEL-022 MKIII is set-up and controlled using the supplied utility software, installed on a PC or laptop, and connected via the USB connector on the RX.

The CEL-022 MKIII has no moving parts, is of rugged design and has an excellent reliability record. Regular maintenance simply involves cleaning the TX and RX lenses, which are easily accessible due to our latched head design. Both the TX and RX heads are supplied with an air purge body, which when connected to a high volume source of clean air, keeps the contaminated stack gas away for the lens surfaces. An Aluminium air purge body is available for use on standard installations and a more advanced Stainless Steel air purge body is available for more demanding installations.

The CEL-022 MKIII uses the standard single pass transmission measurement technique, with Transmitter/Receiver arrangement. A light beam emitted from the Transmitter passes across the stack to a Receiver, which measures the intensity of the received light. Increased particulate or smoke density in the stack gas attenuates the transmitted light and causes the intensity of the received light to fall. This reduction in intensity is measured and presented as % opacity.

The light source in the transmitter is a high intensity, high reliability green LED which provides long life and stable intensity. The transmitted light beam is pulsed to give complete immunity to ambient light levels. The intensity of the transmitted light is monitored at source so that any variations in the emitted light level are compensated for at the Receiver. The Receiver has on board temperature measurement to provide stability over temperature.

When supplied with an Operator Interface (OI) all power supply and output connections are made in the OI rather than the RX. The OI is available in a range of enclosure styles, it has a bright 4 digit LED display and a simple 4 button keypad, which allows full command and control of the instrument. Alternatively, the free utility software can be connected to the OI and used to command and control the CEL-022 MKIII directly from a PC.

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