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17124975-4

Replacement MX6 Sensor for Nitrogen Dioxide (NO2). Range 0 to 150ppm, Resolution 0.1ppm. Response time 7 seconds (T50)

£509.00

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Description

Nitrogen Dioxide (NO2​) is a reddish-brown gas with a sharp, pungent, and biting odour. It is one of the most significant air pollutants among the nitrogen oxides (NOx​). Unlike Nitric Oxide (NO), which readily oxidizes to form NO2​, nitrogen dioxide is directly a highly toxic gas and a strong oxidizing agent.

Key Properties:

  • Colour: Reddish-brown (can appear as a hazy brown cloud at higher concentrations).
  • Odour: Sharp, pungent, biting; detectable at low concentrations, but prolonged exposure can lead to olfactory fatigue.
  • Highly Toxic: A potent respiratory irritant that can cause immediate and delayed health effects.
  • Density: Heavier than air, so it tends to accumulate in low-lying areas, trenches, and confined spaces.
  • Reactive: Plays a major role in atmospheric chemistry, contributing to the formation of ozone and particulate matter.

 

Replacement Sensor, Part No. 17124975-4, Properties

Gas Detected
(Abbreviation)
Sensor Type Measurement Response time
(Seconds)
Calibration Gas
& Concentration
Range Resolution T50 T90
Nitrogen Dioxide
NO2
Electrochemical 0 to 150ppm 0.1ppm 7 18 NO2
25 ppm

 

Toxic Gas Sensor Cross-sensitivity Table

Target Gas Sensor
CO CO
(H2 Low)
H2S SO2 NO2 Cl2 ClO2 HCN HCl PH3 NO H2 NH3
CO 100 100 1 1 0 0 0 0 0 0 0 20 0
H2S 5 5 100 1 -40 -3 -25 10 300 25 10 20 25
SO2 0 5 5 100 0 0 0 40 0 0 -40
NO2 -5 5 -25 -165 100 45 -70 30 0 -10
Cl2 -10 0 -20 -25 10 100 60 -20 6 -20 0 0 -50
ClO2 20 100
HCN 15 50 1 0 0 100 35 1 0 30 5
HCl 3 5 0 2 0 0 100 0 15 0 0
PH3 -100 425 300 100
NO 25 40 -0.2 1 5 -5 100 30 0
H2 22 3 0.08 0.5 0 0 0 0 0 0 0 100 0
NH3 0 0 0 0 0 0 0 0 0 0 0 0 100

The table above reflects the percentage response provided by the sensor (top row) when exposed to a known concentration of the target gas (column 1).
The numbers were measured under these environmental conditions: 20 °C (68 °F), 50% RH and 1 atm.
The specified cross-interference numbers apply to new sensors only and may vary with time as well as from sensor to sensor.
“-” means no data available.
This table is given as a reference only and is subject to change.

 

MX6 Replacement Sensor Cells

The MX6 gas detectors include field replaceable, plug-in sensors. The user can replace any sensor in the field and have the instrument in service after performing a simple field calibration. Up to 5 sensor can be installed, each in one or more specific location.

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