Nitric Acid analysers
  • Comprehensive solutions in the Nitric Acid Industry
  • Can be supplied in both in-situ and extractive configuration
  • Can be supplied with an auto-ranging capability
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Nitric Acid Process Gas Emissions Monitoring & Analysis

High Pressure Applications (>)2 bar
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 test
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
NOx 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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