P5000 In-Situ CEM

In stack Continuous Emissions Monitoring

Protea 5000 In-Situ full spectrum Ultra Violet gas analyser connected to a Protea Control Unit forms the basis of a Continuous Emission Monitoring System (CEMS). The Stack Mounted In-Situ analyser monitors the stack gas without the need for any sample handling equipment making it a cost effective solution to Continuous Emission Monitoring and Process applications. The analyser monitors the stack gases “wet”, water vapour is continuously monitored enabling the pollutant gases can be reported on a wet or dry bases.

The Protea 5000 can monitor to multiple gas species, including NO, NO2, N2O, SO2, NH3, TRS, H2S and H2O in many CEMs and process applications. The analyser probe is heated, ensuring components in contact with the stack gas are above the dew point, enabling the analyser to be installed on highly corrosive applications such as Nitric Acid and Sulphuric Acid plants. The analyser is compliant with international standards such as US EPA 40 cfr Part 60 & 75.

The Protea 5000 requires minimal maintenance or operator intervention, capable of fully automated zero and verification the analyser, utilising advanced diagnostics will continuously report health status.

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Comparison of CEM Techniques

The Stack Mounted Protea 5000 can accept signals from adjacent instruments for example Oxygen, Particulates (Dust), velocity not only reducing installation costs but also enabling the system to report monitored concentration normalised to Oxygen or in mass units (kg/hr).

Monitoring Ranges for P5000
Gases measured NO    0 - 20ppm / 26mg/Nm3
NO2    0 - 20ppm / 41mg/Nm3
SO2    0 - 20ppm / 60mg/Nm3
CL2    0 - 20ppm / 26mg/Nm3
O3    0 - 1ppm / 2mg/Nm3
H2S    0 - 20ppm / 30mg/Nm3
P5000 Specifications
Principle of Operation Ultra-violet absorption full spectrum method.
Spectral range 180nm to 400nm.
Ultra-violet source Extended life deuterium lamp (typically 7000 hrs).
Ultra-violet detector Minitaure 1024 bit photo diode array.
Sample path length 1 metre (Other lengths on application)
Cross-sensitivity Minimal due to full spectrum principle and advanced algorithms in the processor software.
Pressure Compensation To allow for atmospheric/stack pressure variation.
Accuracy Typically ±2% of full scale concentration but dependent on application.
Response time Application dependent but typically 120 seconds to T90.
Calibration Requirements Supplied pre-calibrated. Short term drift of less than the quoted accuracy is removed by zero calibration, carried out automatically, typically every 24 hours depending on application.
Enclosure Aluminium alloy casting with high protection finish, sealed to IP65 \NEMA 4X. Outer GRP weather protection.
Operating environment -20°C to +45°C (-4°F to 113°F). Ducted air provision for extreme temperatures. Sample temperatures up to 400°C (750°F). (higher temperature on application).
Materials-contact with gas Calcium fluoride, glass, 316 stainless steel, graphite and fused silica.
Services required 90-250V 80VA required for lamp PSU, head cooler fan (application dependent) and electronics. Instrument air for the analyser void purge, autozero and sample cell protection, controlled by the Protea 5000. Pressure 2.5-3 barg; flow rate 1litre/min constant, regulator takes up to 10 bar but set to 2 barg to give correct flows as Autozero unit flow is pre-set for intake of 2 bar.
Mounting Flange 3” 150lb (note this is a special flange part number 4-1114).
Weight 35 kg (77.2lb)
Physical dimensions 1544mm (60.78”) x 492mm (19.37”) x 410mm (16.14”).

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