Model 4020 Total Hydrocarbon Analyzer

The Model 4020 uses a field-proven FID detector to measure THC in various streams. This instrument is ideal for monitoring hydrocarbon contamination in high purity bulk gases. When coupled with Teledyne’s unique separation column, the 4020 is also diverse enough to be applied in hazardous locations for detection of volatile hydrocarbons in cooling water for process leak detection and environmental compliance.

Series 4000 Overview

All 4000 series units employ the same basic architecture and electronics; however, each analyzer has additional features:

​4020 Total Hydrocarbon Analyzer Uses FID to measure total hydrocarbons in ppm in a sample gas stream
​4030 Total Hydrocarbon Analyzer Basic 40​​20 with sample system at a higher temperature for heated applications
Avoids condensation of the sample
4040 Methane / Non-Methane Basic 4020, plus temperature-controlled sampling system with GC column to give accurate readings of both methane and non-methane hydrocarbons in a gas stream
4060 Benzene Analyzer Same as 4040, but used to measure ppb levels of benzene instead of methane/non-methane
​4080 Total Hydrocarbon Analyzer Basic 4020 with sample system including stripper to measure total hydrocarbons in an aqueous sample


Series 4000 Hydrocarbon Analysers range brochure


Laboratory & Scientific

Stack, Process & CEMS


  • Easy to use software, user-programmable ranges
  • GC technology used for complete separation of Methane, Ethylene Oxide, Benzene, Styrene, BTX and many other compounds (application dependent)
  • Automatic fuel shut off system
  • Electronic flame-out guard circuit
  • Adjustable alarm and oven settings
  • Fast response
  • Sample filter with exchangeable stainless steel element
  • Built-in sample pump (optional)
  • Stainless steel sample system with flexible design to handle either a 100% H2, H2/N2 or H2/He support gas fuel mixture
  • Automatic ignition
  • X-purged configuration for hazardous area installations available
  • Standard auto-calibration programming, ideal for unmanned plant conditions
  • Enhanced temperature control of sample compartment for stable, reproducible results
  • Easily accessible pressure and flow control devices
  • Slide out chassis design for easy access to internal components
  • CE marked
  • Optional methanizer for CO and CO2 measurements.


  • Monitoring the purity of oxygen, argon, nitrogen and other blanketing gases in the manufacture of microcircuits
  • Monitoring hydrocarbon contamination in air liquefaction and other gas production processes
  • Gas purity certification
  • Detecting trace hydrocarbons in ambient air
  • Detecting atmospheric pollutants
  • Monitoring for fuel leakage or toxic solvents​
  • Monitoring hydrocarbons in CO2 feed streams in the food/beverage industry


Ranges 0-10, 0-100, 0-1000 ppm HC standard (CH4 equivalent, lower optional ranges available)
Sensitivity 1% of FS
Resolution 10 ppb on 0-1 ppm range
Accuracy ± 2% of FS at constant temperature
Response Time 90% in less than 15 seconds
Temperature 40° to 110° (4.44° to 43.33°C)
Fuel Mixtures of 40% Hydrogen / 60% Nitrogen Recommended
Power 115 or 220 VAC, 50/60Hz, 600VA
Noise Less than 0.5% of FS
Drift 2% FS per week
Linearity 1% FS through all ranges
Repeatability 1% FS through all ranges
​Sample Chamber NA required
​Flow Rate 1 Liter/minute (standard)
Outputs 0-1 VDC & 4-20 mADC, isolated current output
Warm-Up Time Usable in approximately 4 hours
Stable in approximately 8 hours
Carrier Gas NA required
Enclosure 19″ rack mounted steel enclosure
19″W x 8.75″H x 15.5″D
(48.3 x 22.2 x 39.4 cm)

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