Honeywell MIDAS Sensor Cartridge for Diborane (B2H6) 0.036-0.4 ppm



Honeywell MIDAS Sensor Cartridge for Diborane (B2H6) 0.036-0.4 ppm

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 MeasuredDiborane (B2H6)
Cartridge Part NumberMIDAS-E-B2H2 year extended warranty
Sensor Technology3 electrode electrochemical cell
Measuring Range (ppm)B2H60 – 0.4 ppm
Minimum Alarm 1 Set Point0.050 ppm
Repeatability< ± 2% of measured value
Linearity< ± 10% of Full Scale
Response Time t62.5< 15 seconds
Sensor Cartridge Life Expectancy≥ 24 months under typical application conditions
Operating Temperature0°C to +40°C (32°F to 104°F)
Effect of Temperature< ± 0.009 ppm / °C (at 0°C to 20°C)
Zero< ± 0.0002ppm / °C (0°C to 40°C)
Sensitivity< ± 1% of measured value / °C
Operating Humidity (continuous)10 – 95% rH (non-condensing)
Effect of HumidityZeroInitial short term drift at abrupt RH change (< 0.0075ppm / % rH)
Sensitivity< ± 0.5% of measured value / % rH
Operating Pressure90 – 110kPa
Effect of PositionNo effect in typical application
Long Term DriftZeroNo Drift
Sensitivity< 5% of measured value / 6 months
Calibration GasDiborane (B2H6)
Challenge Gas (Bump Test)Phosphine (PH3)
Warm Up Time< 20 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 / VaporChemical FormulaConcentration applied (ppm)Reading (ppm B2H6)
Carbon DioxideCO25,0000
Carbon MonoxideCO850
Hydrogen ChlorideHCl3.90.26
Hydrogen CyanideHCN120.35
Hydrogen FluorideHF7.20
Hydrogen SelenideH2Se0.80.2
Hydrogen SulfideH2S1.80.75
Iso PropanolC3H7OH20,000<0.05
Nitrogen DioxideNO210.1-1.5
Sulfur DioxideSO220.3

Additional information

Weight 1 lbs