Model 4020​​​

Total Hydr​​​​ocarbon Analyzer​​​​



  • ​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


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.

4000 Series 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



​0-10, 0-100, 0-1000 ppm HC standard (CH4 equivalent, lower optional ranges available)


1% of FS


​10 ppb on 0-1 ppm range


​± 2% of FS at constant temperature

Response Time

​90% in less than 15 seconds


​40° to 110° (4.44° to 43.33°C)


​Mixtures of 40% Hydrogen / 60% Nitrogen Recommended


​115 or 220 VAC, 50/60Hz, 90VA


​Less than 0.5% of FS


​2% FS per week


​1% FS through all ranges


​​1% FS through all ranges

​Sample Chamber

​NA required

​Flow Rate

​1 Liter/minute (standard)


​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


​19" rack mounted steel enclosure
19"W x 8.75"H x 15.5"D
(48.3 x 22.2 x 39.4 cm)


  • 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