Honeywell MIDAS Sensor Cartridge for Propane (C3H8) 0-100% LEL



Honeywell MIDAS Sensor Cartridge for Propane (C3H8) 0-100% LEL

Several Honeywell MIDAS® cartridges can be configured to read a number of different gases based on a common chemical family. Actual details for the sensor detection range are included in the sensor cartridge specification sheet and the MIDAS® technical manual. MIDAS® sensor cartridges can be ordered as part of a Kit with the universal MIDAS® transmitter, or as a replacement part. The detectable range is listed. With the exception of O2 (where ambient concentration is typically 20.9%), the sensors will display zero when no gas is present. All Cartridges with the format MIDAS-E-XXX are supplied with a 2 year (24 month) warranty.
Gas MeasuredPropane (C3H8)
Cartridge Part NumberMIDAS-E-LEX
2 year extended warranty
Sensor TechnologyPellistor (catalytic bead)
Measuring RangeC3H8 0 – 100% LEL
Minimum Alarm 1 Set Point10% LEL
Lower Detection Limit4.5% LEL
Linearity<± 10% of measured value
Repeatability<± 10% of measured value
Resolution1% LEL
Response Time t62.5≤ 5 seconds
Sensor Cartridge Life Expectancy≥ 60 months under typical application conditions
Operating Temperature0°C to +40°C (32°F to 104°F)
Effect of TemperatureZero<± 1% fsd
Sensitivity<± 3% fsd
Operating Humidity10 to 90% RH
Effect of HumidityZero<± 1% fsd
Sensitivity<± 2% fsd
Operating Pressure90 – 110kPa
Effect of PositionNo effect in typical application
Long Term DriftZero< 3% fsd / year
Sensitivity< 3% fsd / year
Calibration GasPropane (C3H8)
Bump Test GasPropane (C3H8)
Warm Up Time< 30 minutes
Storage Temperature+5°C to +25°C (+41°F to +77°F)
Cross Sensitivities

Each Midas sensor is potentially cross sensitive to other gases and this may cause a gas reading when exposed to other gases than those originally designated. The table below presents typical readings that will be observed when a new sensor cartridge is exposed to the cross sensitive gas (or a mixture of gases containing the cross sensitive species).
Gas MeasuredChemical FormulaConcentration Applied (ppm)Reading (% LEL)
Carbon DioxideCO2100
Carbon MonoxideCO100
Hydrogen ChlorideHCl100
Hydrogen SulfideH2S100
Iso PropanolC3H7OH1.0%v31
Nitric OxideNO100
Nitrogen DioxideNO2100
Sulfur DioxideSO2100

Additional information

Weight 1 lbs