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  • Overview
  • Specification

THC Analyzer(FID)

The SEMTECH-FID measures total hydrocarbons using a vacuum flame ionization detector.


  • 1065 Compliant: The SEMTECH-FID meets the US EPA 1065 compliance requirements for in-use testing.
  • Automatic Flame Ignition: The FID flame will light automatically after 30 minutes of warm-up time.
  • Automatic Calibration: The system will calibrate itself automatically after flame ignition.
  • Measuring Range: The SEMTECH-FID has freely adjustable measurement ranges between 0-10 and 0-30,000 ppm C3H8.
  • Sample Handling: Sample probe, heated filter, coalescing filter and Nafion dryer are integrated into the tube electronics. A heated sample line delivers the sample to the FID chamber at 191°C.
  • Combustion Air: The system contains a catalyst, enabling the use of room air for the FID chamber combustion air.
  • Graphical Panel Display: A full color, graphic touch screen displays live data, and enables system setup and basic functions, such as zero and span.
  • Power Supply Monitoring: Power is 220-240 VAC, with both current and voltage monitoring.
  • Weatherproof Construction: All components meet IP54 (NEMA 3) standards.
  • Shock Resistance: The mechanical design has been optimized for resistance to shock and vibration, ensuring data in the most rugged of in-use environments.
  • Design Details: Over a decade of experience in in-use emissions testing has gone into the design details of the SEMTECH ECOSTAR system, including:

    • EMI protection through the use of gaskets, filters and capped connectors
    • Stress relief for pneumatic connections
    • Channels for cable management
    • Standard Swagelok™ bulkhead connectors
    • Rugged Deutsch connectors for power and auxiliary connectors
    • Handles that lock to other SEMTECH ECOSTAR modules for stable system integration

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Sensors’ SEMTECH-FID measures total hydrocarbons using a vacuum flame ionization detector. The system is designed to minimize the loss of hydrocarbons prior to analysis in the FID chamber. The sample is maintained at 191°C through the use of a heated filter and heated sample line. Fittings are made with stainless steel, which has low gas adsorption properties. Warm up time from 20°C to 191°C is approximately one hour. Once the FID reaches temperature, the flame lights automatically. Calibration is also automatic. Freely adjustable measurement ranges ensure accuracy for a wide variety of test applications.

Power: 220-240 VAC
Warm up Time: 60 minutes to meet specifications
Storage Temperature: Dry -10°C to 60°C ambient
Operating Environment: -10°C to 45°C ambient
Dimensions: 43.6cm x 30.8cm x 13.6cm (WxDxH)
Weight: 12 kg
Data transmission: Ethernet, USB
Electromagnetic interference and susceptibility: CE Standards: IEC 61326: 2002-2
Analog output current: 0 - 20 mA or 4 - 20 mA
Analog output voltage: 0 - 10V


Measuring ranges:
freely adjustable
Smallest measuring range:
0 - 90 ppm C1
Largest measuring range:
0 - 30,000 ppm C1
±1% rdg or ±0.3% FS
(±1% FS for lowest measurement range)
Intercept ≤ 0.5% range
(1% for lowest range)
0.990 ≤ Slope ≤ 1.01
SEE ≤ 1.0% range
R2 ≥ 0.998
±1% rdg
Zero drift:
±1% in 24hr
Analyzer Response Time:
T10-90 < 2.5 seconds
System Response Time:
T10-90 < 3.5 seconds
Gas Requirements
He / H2
Fuel consumption:
150 ml/min
Span gas:
Span gas consumption:
500 ml/min
Zero gas:
N2 or air
Zero gas consumption:
500 ml/min
Heated Sample Lines
Standard lengths:
6', 12', 18'
Temperature control:
up to 200°C


  • Heated Line: Heated lines come in 6', 12' and 16' standard lengths.
  • Heated Control Module: A separate control box provides self-regulating power to the heated line.
  • Dust Filter: A standard Briggs & Stratton air filter is fitted into the filter box on the rear of the unit.


  • Vehicle Interface: Vehicle network data is obtained through the vehicle interface, recording important vehicle parameters along with the emissions data.
  • Enhanced Accuracy GPS: The GPS receiver tracks the route taken by the vehicle under test, recording signal quality, date, time, latitude, longitude, altitude and speed.
  • Weather Probe: The plug-and-play weather probe provides accurate humidity readings used in the emissions calculations.
  • Shock Mount Plate: This custom designed shock mount plate protects your equipment by absorbing the inevitable vibrations that come with in-use testing.

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