Sewerin RMLD

Revolutionary laser technique to check for gas leaks from a distance of up
to 30 m
The Sewerin RMLD (Remote Methane Leak Detector) is the first instrument in a
generation of laser leak detectors, allowing the user a completely new method of
operation.
The RMLD provides access to hard-to-reach areas and difficult terrains. Its laser passes
through a methane plume and absorbs a specific area of the infrared light, allowing the
user to detect the gas leak from a safe distance.
The instrument is exclusively developed for detecting methane gas and shows no
cross-sensitivity to other hydrocarbons. The gas concentration is calculated by the amount
of infrared light that is absorbed by the gas. For example if the gas plume has an
expansion of 1 m and a concentration of 100 ppm, a value of 100 ppm*m is displayed. If
the gas plume of 100 ppm is only 0.5 m wide, the measured value is 50 ppm*m
The RMLD consists of two interactive components:
Transceiver
Controller
The transceiver has two lasers; the infrared laser is invisible and is continuously active
while the unit is turned on. The spotter laser operates in the clearly visible green
frequency range and can be activated on demand.
The RMLD includes integrated self-test and adjustment functions that guarantee correct
functioning of the device. While in use, the RMLD continuously monitors several
parameters to ensure that the instrument is functioning correctly. Should any of these
parameters exceed the specified operating limits, an audible alarm will sound and a
fault/warning error message will be shown on the display.

Technical Data
Detection method: TDLAS (Tunable Diode Laser Absorption Spectroscopy)
Measurement range: 0 to 99,999 ppm*m
Sensitivity: 5 ppm*m at a distance of 0 to 15 m
min. 10 ppm*m at a distance of 15 to 30 m
Detection range: 30 m (nominal)
Actual distances may vary depending on the type of
background and other conditions
Beam size: Conical beam, width 56 cm at 30 m
Standards complied with: EMV (EN61000-6-2, EN6100-6-4) (pending)
Laser safety
(eye protection):
(CDRH, ANSI
und IEC)
IR detection laser:
Class I
Green spotter laser:
Class IIIa: Class IIIa: Do not look into the beam or
view directly using optical instruments!
Display: LC display with backlight (0.75 inch, numeric)
Operating temperature: -17 °C to +50 °C
Humidity: 5 to 95 % (non-condensing)
Housing: IP54 (protected against water spray and dust)
Weight of device: 4 kg (transceiver 1.3 kg, controller 2.7 kg)
Carrying case: 6.4 kg; 86 cm x 24 cm x 36 cm
Power supply: Internal lithium-ion rechargeable battery
External backup battery pack holding 5 type "C" cells
(optional)
Battery operating life: 8 hours at 0 °C without backlight on (internal battery)
Battery charger: External universal charger 110 - 240 V/AC, 50/60 Hz with
charge indicator (max. 8 hours for full charge)
Delivery contents
RMLD (transceiver and controlle)
Carrying case with integrated reference gas cell
Charging adapter
Headphones
Carrying strap
Ergonomic carrying system