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MLD Flammable

Gas Leakage detector for flammable gases

flammable gas detector

Molecular Leakage Detector for flammable gas based on ultimate MPS technology.

This flammable gas detector is a unique solution using the latest MPS (Molecular Property Spectrometry) technology to indicate the presence of flammable gases providing both a continous signal proportional to the gas concentration and the activation via relay for alarming once a prefixed (and settable) level is reached.
It combines all the advantages of MPS technology as in terms of long lifetime, no field calibration, built-in envirnomental compensation, no poisoning, wide temperature operating range and durability with a dedicated electronic board for easy interfacing the common control units thanks to the multiple outputs: Modbus, Relays and 4-20mA.

  • No field calibration
  • No cross sensitivity
  • Long lifetime 15+ years
  • Fail safe (built-in diagnostic)
  • Flammable gases concentration 5-100% LEL
  • Built-in T and Rh compensation
  • Immune to poisoning
  • Operating range -40° to 75° C, 0-100% Rh
  • Modbus, Relays and 4-20mA Output (ALL IN ONE)

TechnologyMolecular Property Spectrometry by NevadaNano
Gas detectedbutane, ethane, hydrogen, isobutane, isobutylene, isopropanol, methane,
methyl ethyl ketone, octane, pentane, propane, propylene, toluene, xylene
Measurament range0-50% LEL
Accuracy±6% LEL (R290)±5% LEL (others)
Response Time (T90)<20 sec.
Resolution0,1% LEL
Lifetime15+ years


Signals Output

Gas concentration, Temperature, Humidity, Pressure, Status, Prealarm, Alarm, Fault, Lifetime

Measurament Output

Modbus, 4-20mA, Relays, 0,4-2V

Visual Information

3 x LED (Status, Prealarm, Alarm/Fault)

Supply Voltage


Power Consumption

35mA average - 50mA peak

Operating Temperature

-40° to +75°C

Operating Humidity

0 - 100% RH

Operating Pressure

80 to 120 kPa

Protection grade


Dimensions MLD-S4

13 x 8 x 4,0 cm

Dimensions MLD-MN

13 x 8 x 2,5 cm

Certifications & Approvals

CE, EMC 61326-1:2013, Rohs, IEC60079-29-1, IEC60335-2-40,
EN50271, ATEX(opt)

Applications Air QualityAutomotiveTruck, bus & HVORSafetyHVACResearch & Analysis
Target Gas Flammables
Type Gas Detectors