1. Laser Methane Copter

2. Content About Pergam Product History Applications Working Principle
Components and Specifications
Sample Data & Reporting

3. About Us Proud member of the international PERGAM Group.
Sales and service locations in USA, Switzerland, Italy and Russia.
Out staff consists of more than 150 highly specialized employees.

4. About Us
Natural Gas Leak Detection
Power Line Inspection Services

5. with green laser and Android interface
LMm Product History
2015
UAV LMm-G with Data Logger
2013
Laser Methane Mini-G
with green laser and Android interface
2009
Laser Methane Mini

6. Applications
Leak detection and emission monitoring tasks, such as natural gas line surveys, tank inspections, landfill emission monitoring, gas well testing, plant safety audits …
The sensor is only sensitive for methane. Due to this, there are no false readings.

7. Working Principle
The concept is based on Infrared Absorption Spectroscopy.
A laser light in the spectral range of 1,65 μm is emitted.

8. Working Principle
The laser light is reflected at the background and captured back in the instrument.
The outgoing and incoming signals are compared with a built-in reference cell.
~ 100 %

9. Working Principle
If there is methane gas present along the laser path, the laser light is partially absorbed.
An algorithm calculates the gas concentration in ppm*m (parts per million multiplied by meter).
~ 100 %

10. Components Micro SD card Laser Methane Mini-G gas detector
LMm Data Logger
with integrated GPS and
Data Recorder
UAV, flight controller, mounts,
cameras … cannot be provided
from Pergam.

11. Technical Specification
Target Gas
Methane (CH4) and methane-containing gases (natural gas and similar)
Detection Units
ppm*m
Detection Limits
1 ~ 50,000 ppm*m
Detection Speed
0.1 seconds
Distance
1.5 ft. – 100 ft. | meters
Operating Time
Approx. 5 hours
Laser (Guide Light)
Output wavelength: 532nm, Output level: 5mW (Class 3R) or less
Laser (Measurement Light)
Output wavelength: 1653nm, Output level: 10mW (Class 1) or less
Operating Temperature
-1.4°F - 120°F | -17°C - 50°C
Operating Humidity
% (no dew condensation)

12. Influencing Factors
Vibrations from UAV. Use a gimbal or other vibration eliminating mounts for the installation.
Altitude: the smaller the distance between sensor and background, the higher the sensitivity. For optimum results, always fly as low as possible.
Wind: consider the wind direction. Once determined, always fly the sensor downwind. The laser needs to ‘cut’ the gas cloud.
Shiny surfaces like water or ice don’t reflect sufficient energy back to the instrument.

13. Parts and Dimensions Part Dimensions Weight Laser Methane Mini-G
(SA3C50A)
116 x 70 x 20 mm
4.57 x 2.76 x 0.79 inches
505 grams
1.11 lbs.
LMm Data Logger
(LMm-UAV)
185 x 80 x 42 mm
7.28 x 3.15 x 1.65 inches
130 grams
0.29 lbs.
Protection Cover LMm
(SA0Z41A)
198 x 88 x 60 mm
7.80 x 3.46 x 2.36 inches
240 grams
0.53 lbs.
Protection Cover Data Logger
120 x 75 x 25 mm
4.72 x 2.95 x 0.98 inches
45 grams
0.10 lbs.

14. Sample Data
Recorded as CSV file on MicroSD Card with a frequency of 10 readings / second
D7 271;WD8 348;SLT 34026;WKT 40;h V02.R01 Build **** bat:2.64V ,,,,,,,
140815, ,A, ,N, ,W,9
140815, ,A, ,N, ,W,8
140815, ,A, ,N, ,W,7
140815, ,A, ,N, ,W,150
140815, ,A, ,N,12215,W,8
140815, ,A, ,N, ,W,11
140815,170532,A, ,N, ,W,13
140815, ,A, ,N, ,W,12
140815, ,A, ,N, ,W,11
(…)

15. Sample Data Data Format 140815, 170531.7, A, 4726.5677,N,
,W,
150
UTC Date
UTC Time
Status
Longitude
Latitude
Gas Concentration
ddmmyy
hhmmss.sss
A = Active or
V = Void
N = North,
S = South
E = East,
W = West
in ppm*m

16. Reporting
3rd party reporting and documentation software (desktop or cloud solutions). For example: LineVision from Remote Geo

17. Installations

18. At a Glance
Remote detection of methane; no cross-sensitivity with other gases.
Self-check during startup. No calibration of instrument required.
Coordinates and gas concentrations are saved on a SD Card, 10 measurements per second.
Easy to install through built-in GPS, data storage and own battery.

20. Thank you for your attention!
Peter Mantel
Pergam Suisse AG
Aleks Krnja