CMS-4000 Continuous Hydrocarbon Monitoring System

Continuous Real Time Hydrocarbon Monitoring System. 

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  • Overview
  • Features
  • Specifications
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The CMS-4000 is a simple, reliable tool to measure and monitor total petroleum hydrocarbons in water. With no moving parts and corrosion protected components, the system can be utilized in many different applications.
The CMS-4000 logger with the Fibre Optic Chemical Sensor (FOCS®) detects the presence of petroleum hydrocarbons in water.
The FOCS probe takes advantage of the interaction between the light traveling through a fibre and a water solution containing petroleum hydrocarbons. As the concentration of hydrocarbons increases, the light scattered from the proprietary probe fibre increases in a quantitative relationship. The probe output is monitored by a controller that has 0-5 volt or 4-20 mA output and remote access capability. The system can monitor up to four (4) probes. The probe is intrinsically safe* and designed to be remotely mounted in hazardous locations.
*When used with the FCI Environmental Intrinsic Safety Barrier.
  • Reliable tool that measures petroleum  hydrocarbons in water
  • Used in applications where Web connection  is NOT required
  • Used where logger needs to communicate with  other equipment in the plant
  • Continuous data collection and recording Intrinsically safe probe network*
  • Analogue (V or mA) output
  • Connect up to 4 DHP hydrocarbon probes
  • Real time remote monitorin


Operating Range
0-2,000 ppm as TPH
Lower Limit of Detection 0.1 ppm as xylene
Hydrocarbons Detected C6 and higher MW petroleum hydrocarbons
Accuracy/Precision ±10% of reading
Response Time (initial) <15 seconds
Response Time (to 95%) <5 minutes
Operating Temperature Range 0° - 50° C
Trend Correlation with GC data 98% vs. EPA Method 8020