MQ138 Senzor


Senzor MQ138 detekuje Benzene, Toluene, Alcohol, Acetone, Propane, Formaldehyde, Hydrogen. Vhodný pre sledovanie potenciálneho úniku týchto plynov do obývaných priestorov a pod. Napájanie 5V.


Katalógové číslo: 1159957222 Kategórie: Značka:
Smiley face

wholesale formaldehyde gas detection sensor, MQ138 MQ-138 aldehydes, ketones, alcohols gas sensor free shipping

Specification MQ138:

  • Size: 32mm X22mm X30mm
  • the main chip: formaldehyde gas sensor probe, LM393
  • work voltage: DC 5V
  • with the signal output LED indication
  • Dual output (analog output, and TTL level output)
  • TTL output valid signal is low; (low output signal light, which can be accessed microcontroller IO port)
  • analog output increases with the concentration, the higher the voltage the higher the concentration
  •  Aldehydes, alcohols, ketones, aromatic compounds with high sensitivity
  • with a long life and reliable stability
  • Fast response characteristics
  • with mounting holes for easy permanent installation
  • the probe can plug design for easy testing

Characteristics MQ138:

For the family, the environment of the volatile compounds detection devices, suitable aldehydes, alcohols, ketones, aromatic compounds detected, the gas sensor test concentration range:

  • Benzene :1 to 100ppm
  • Toluene :10 to 100ppm
  • Methanol :5 to 100ppm
  • Alcohol :30 to 300ppm
  • Acetone :10 to 300ppm
  • Formaldehyde :1 to 10ppm


download PDF