THC Gas Analyzer

THC Gas Analyzer



THC Analyzer meets all current regulations for the measurement of THC, including UN-ECE. R.49 and US EPA 40CFR, Part 1065. It has been packaged to survive the harsh environmental conditions of in-use testing.


  • Automatic Flame Ignition: The FID flame will light automatically after approximately 30 minutes of warm-up time.
  • Measuring Range: The SEMTECH FID has 4 user-selectable measurement ranges between 0-100 and 0-30000 ppmC1.
  • Sample Handling: A water trap and Nafion dryer are integrated into the SCS module. A heated sample line (various lengths) delivers the sample to the FID chamber at 191°C. Particulate matter is removed using a built-in disposable filtering system.
  • Combustion Air: The system includes a catalytic converter, enabling the use of room air as combustion air for the FID flame.
  • Compliance: The SEMTECH FID is compliant for gases regulated under the rules of UN-ECE. R.49 and Commission Regulation (EU) No. 582/2011 and of US EPA 40CFR, Part 1065.
  • Heated Lines: Sensors has developed an innovative, low powered heated line that controls and maintains the temperature of the exhaust sample at 191 ± 5 °C.
  • 12V DC Power: The system operates on 12V DC power.


Power requirements

12 V

Warm up Time

30 minutes minimum; 60 minutes to meet performance specifications

Storage Temperature

Dry -10°C to 60°C ambient

Operating Environment

-10°C to 45°C ambient

Power Usage


Dimensions (WxDxH)

  1. 17.2 x 12.3 x 5.3 in


  1. 24.6 lb

Data transmission


Electromagnetic interference and susceptibility

CE Standards: IEC 61326: 2002-2




Supported ranges

30000 ppmC1 10000 ppmC1 1000 ppmC1 100 ppmC1

Linearity (all ranges)

|xmin x (a1 - 1) + a0 | ≤ 0.5% of selected range Slope a1 between 0.99 and 1.01 Standard Error of Estimates (SEE) ≤ 1% of selected range Coefficient of Determination r2 ≥ 0.998


≤ ±2% of reading or ≤ ±0.3% of full scale of selected range, whichever is greater


< ±1% of point (span) or < ±1% of selected range, whichever is greater


≤ 1% of selected range


≤ 2% of selected range

Zero drift

≤ ± 1% of full scale of selected range over 1 hour

Span drift

≤ ± 2% of full scale of selected range over 8 hours

Rise Time T10-90

≤ 2.5 seconds

System Response Time T10-90

≤ 10 seconds with rise time ≤ 2.5 seconds

Data Rate

5 Hz

Gas Requirements & Consumption


H2 40% Bal. He (

Fuel consumption

150 ccm @ 300 kPa

Span gas


Span gas consumption

~1.5 LPM @ 150 - 200 kPa

Zero gas

Purified N2 or Purified Synthectic Air

Zero gas consumption

~1.5 LPM @ 150 - 200 kPa

Total Sample Flow