The Procal 2000 emissions analyser measures Oxides of Nitrogen for process control purposes, typically upstream of the N₂O abatement reactor where typical pressures can be as high as 10 bar. The analyser can be supplied in both in-situ and bypass configuration to suit customers’ requirements.

Typical Range
NO	0 – 1000 ppm
NO₂	0 – 300 ppm
N₂0	0 – 1000 ppm

Stack Emissions including Ammonia

Procal 2000 has an integral auto-zero and calibration facility and, in order to meet the requirements of the Nitric Acid process, the system can be supplied with an auto-ranging capability to monitor plant upsets.

The instrument is compliant with international standards and complies with the stringent requirements of Environment Agencies.

Typical Range
NO	0 – 500 ppm
NO₂	0 – 2500 ppm
NH₃0	0 – 100 ppm

Stack Emissions including Hydrocarbons

Procal 2000 is heated to prevent condensate build-up at low sample temperatures. The heated probe option is especially suited to this application as it efficiently deals with variations in process temperature. It also keeps the probe hot, ensuring immediate availability when the plant is restarted after an outage.

Typical Range
CO₂	0 – 20%
NO₂	0 – 1250mg/mg³
N₂O	0 – 1.5%
CO	0 – 1250mg/mg³
NO_x	0 – 2500mg/m³
CH₄0	0 – 6000mg/m³

Hazardous Areas

For Hazardous Area locations associated with high Methane levels, Procal 2000 can be supplied with ATEX / IEC approvals including accessories suitable for installation in such areas. For example, steam-heated probes and bypasses ensure that the sample temperature is maintained above the acid dew point.

These in-situ analysers are designed to provide high levels of reliability, exceeding the Environmental Agency’s requirements for monitoring availability.

Typical Range
H₂0	0 – 5%
NO	0 – 500ppm
NO₂	0 – 250ppm
NH₃	0 – 200ppm
CH₄0	0 – 200ppm

The Procal 1000 controller has a capability to control up to six analysers and includes data logging and reporting.

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