Carbon monoxide (CO) detection in spray drying

The safety of powder drying has become increasingly important for manufacturers operating in the food and pharmaceutical industries. The outbreak of fire is a significant risk in these factories, potentially causing serious damage. Manufacturers must balance the need to improve efficiency with keeping their operations continuous, cost-effective and, most importantly, safe.


Get a quote


Key benefits

  • Low-cost carbon monoxide (CO) detection system
  • Easy to install and maintain
  • Quick and reliable measurement of carbon monoxide (CO)
  • Built-in automated alarms and I/O’s for optimal safety of the powder drying plant
  • Reduced insurance costs

“Quick and reliable measurement of CO in the drying process is highly preferred for process safety!”


CO detection system

CO detection is widely used for pre-warning in dryer installation safety systems. Uncontrolled process conditions can cause the product to coagulate and form lumps, which poses a major risk to the dryer’s operation and shortens production cycles between cleaning. Importantly, coagulated products are exposed to increased residence times, which can cause degenerating smoldering reactions, creating a significant risk of fire and explosion.

NICOSYS-3 is a sample conditioning system, that detects CO in gaseous streams. We began developing this system 25 years ago, with NIZO (Dutch National Institute of Dairy Research). The Hobré NICOSYS-3 is the latest version of the system, with condensate coolers, NDIR gas filter correlation analyzer, and sample probes for various applications. The CO detector improves process safety with fast and accurate detection of smoldering and Maillard reactions to reduce fire risk.

Read more about the humidity effects in spray drying and increasing process efficiency: the HICOSYS analyzer.

Product Comparison

Hobré Instruments B.V. only uses reliable components that have proven themselves under the severe conditions in food and feed drying factories, – and we provide the global service and maintenance necessary to keep such installations running. Below you may find the differentiation of our NICOSYS and HICOSYS.

MeasuringH2O & CO analyzer  CO analyzer
TechnologyOFCEAS-IR laser Technology– Tunable diode laser
– Optical Feedback Cavity Enhanced
– Absorption spectroscopy (OFCEAS)
Non-Dispersive Infrared Spectrophotometry (NDIR)– IR Absorption
– Gas filter correlation
UtilitiesInstrument air
Sample probeFiltered sample probeFiltered sample probe
FlowLow flow
Dry sample line
High Flow
Wet sample Line
Leak TestingContinous leak testStandard leak test
Sample sequencySample sequence 45 secSample sequence 80 sec
Power generation400 Watts2500 Watts