Landtec GEM 5000 SEM5000 Landfill Gas Analyzer

Landtec GEM 5000 SEM5000 Landfill Gas Analyzer for sale, mint condition in excellent full working order, fully tested and serviced to be ready to work perfect and flawlessly


Landtec GEM 5000 SEM5000 Landfill Gas Analyzer for sale, mint condition in excellent full working order. Fully tested and serviced to be ready to work in perfect and flawless condition, everything is in full working order plus includes the case and accessories.

Package Includes:

  • Landtec GEM 5000
  • Landtec SEM5000
  • Hoses
  • Heavy duty water trap filer
  • Soft case
  • A.C. battery charger
  • Electronic Manual accompanies software
  • Landtec System Gas Analyzer Manager (LSGAM) software
  • USB download cable and hard-case

Landtec GEM 5000 Landfill Gas Monitor

The Next Generation of GEM™ Instrument

The Landtec GEM 5000 is designed specifically for use on landfills to monitor Landfill Gas (LFG) Collection & Control Systems. The GEM™5000 samples and analyzes the methane, carbon dioxide and oxygen content of landfill gas with options for additional analysis.

GEM5000 Complete Package Includes:

Instrument, hoses, heavy duty water trap filter, soft case, A.C. battery charger, electronic manual accompanies software, LANDTEC System Gas Analyzer Manager (LSGAM) software, USB download cable and hard-case. Reads: Methane, Carbon Dioxide, Oxygen, temperature (when used with optional probe), atmospheric pressure, differential pressure and calculates gas flow.

NAV and Plus model packages also include more features such as GPS and additional gas measurements

The GEM 5000 is the next generation in the GEM Series of LANDTEC instruments for accurate measurement and monitoring on landfills

Now Available. Please call our sales team to request further information or to place your order.


  • Measures % CH4, CO2 and O2 Volume, static pressure and differential pressure
  • Calculates balance gas, flow (SCFM) and calorific value (KW or BTU)>
  • High Accuracy and Fast Response Time
  • Lighter and More Compact
  • Annual recommended factory service
  • Certified intrinsically safe for landfill use
  • Calibrated to ISO/IEC 17025
  • 3 year warranty


  • Designed specifically for use on landfills to monitor landfill gas (LFG) extraction systems, flares, and migration control systems
  • No need to take more than one instrument to site
  • Can be used for monitoring subsurface migration probes and for measuring gas composition, pressure and flow in gas extraction systems
  • The user is able to set up comments and questions to record information at site and at each sample point
  • Ensures consistent collection of data for better analysis
  • Streamlined user experience reduces operational times


  • Gases Measured: CH4, CO2, O2, CO, H2S
  • Operating Temperature Range: 14°F – 122oF (-10oC to +50oC)
  • Battery Life: Typical use 8 hours from fully charged
  • Charge Time: Approximately 4 hours from complete discharge
  • Pump Flow: Typically 550cc/min
  • Pump Flow with 80 in. H2O Vacuum: Approximately 80cc/min

LANDTEC SEM5000 Portable Methane Detector

The LANDTEC SEM5000 is the ultimate, all-in-one, easy-to-use solution for surface emissions monitoring, reporting and compliance.

The SEM5000 Portable Methane Detector is the ideal instrument for landfill surface emissions monitoring, reporting and detecting potential leaks at wellheads and surface penetrations. Thanks to our patented laser technology, the SEM5000 is selective, specifically to methane and is able to detect methane emissions from 0.5ppm to 100% concentration. The SEM5000 is ATEX Zone 1 certified and meets all Method 21 requirements, making it the perfect tool for regulatory compliance.

The SEM5000 is lightweight and ergonomically designed for hours of hands-free operation. The single selector dial design makes it easy to use and understand. The SEM5000 has an audible alarm and LED warning lights and features integral GPS and Bluetooth in a single unit.

The SEM5000 helps you perform your scans quickly and efficiently. Since the SEM5000 uses laser technology, there is no flame or risk of flame out. So, no time is wasted trying to relight the flame before your work can continue. The SEM5000 features a “Hot Swap” battery, allowing you to swap your battery with a fresh one and keep working without having to wait for the device to charge. Warm up time for the SEM5000 is 30 to 60 seconds and daily calibration is not required.

The SEM5000 also makes reporting easy and thorough. During a scan event, the SEM5000 automatically saves a reading every second and stamps it with the date, time, GPS coordinates and methane concentration. Save intervals can be adjusted to meet customer needs. The auto-save function can also be disabled, allowing the user to save readings manually.

Our user-friendly SEMsoft software package provides multiple reporting options. It auto-populates standard Background, Precision and Instrument Response Time reports. Scan data is reported in an easy-to-use CSV format. SEMsoft also provides options for individual exceedance reports. SEMsoft also allows you to upload site maps, for recording and accessing historical scan data specific to your site. Scan paths and color-coded event points can be layered on top of your site map, allowing you to monitor potential problem areas.


  • Specific to Methane no cross-gas or false readings
  • Wide measurement range (less than 2.5 seconds)
  • Integral GPS and Bluetooth
  • GPS accuracy: 2-4 meters
  • Meets EPA method 21 requirements
  • ATEX certified - Zone 1
  • Laser technology
  • Hot swap battery


  • No cross-gas or false readings
  • No additional devices required
  • Accurate reporting which meets and maintains compliance requirements
  • Highly accurate with no flame and no external hydrogen required for operation
  • Lightweight design weighs half as much as competitive technologies
  • Easy to use, with hands-free operation
  • Multiple reporting functions

Technical Specifications

  • Target Gas: Methane (CH4)
  • Detection Method: Tunable Diode Laser Absorbtion Spectroscopy
  • Measurement Range: 0.5ppm to 100% volume
  • Instrument Resolution: 0.1ppm (0 - 100ppm), 1ppm (100 - 1000ppm), 5ppm (1000 - 5000ppm), 10ppm (5000 - 10000ppm)
  • Pump Flow Rate: 0.6 to 1.0 l/min
  • Sampling Probe Outside Diameter: 4mm
  • Intrinsic Safety: Atex Zone: II 2 G Ex ib op is IIB T3 Gb -25°C
  • Response Time: T90 = 2.5 seconds T90 = 3.5 seconds (w/probe)
  • GPS Accuracy: 2 to 4 meters
  • Power Supply: Lithium Ion Rechargeable Battery Pack (3.7V - 4000mA/h)
  • Battery Autonomy: 10 hours at 68°F (with backlight activated). 8 hours at extreme temperatures
  • Battery Charge Duration: 8 to 10 hours to full charge
  • Temperature Range: -13°F to 122°F
  • Warm Up Time: 30 to 60 seconds
  • Weight: US: 3.5 lbs Metric: 1.6kg