Honeywell MIDAS Sensor Cartridge for Ammonia (NH3) 9-100 ppm



Honeywell MIDAS Sensor Cartridge for Ammonia (NH3) 9-100 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 MeasuredAmmonia (NH3)
Cartridge Part NumberMIDAS-E-NH32 year extended warranty
Sensor Technology3 electrode electrochemical cell
Measuring Range (ppm)NH30 – 100 ppm
Minimum Alarm 1 Set Point12.5 ppm
Repeatability< ± 5% of measured value
Linearity< ± 2% of measured value
Response Time t62.5< 10 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< ± 0.1ppm / °C
Zero< ± 1% of measured value / °C (0°C to 25°C)
Sensitivity< ± 0.2% of measured value / °C (25°C to 40°C)
Operating Humidity (continuous)15 – 90% rH
Effect of HumidityZeroTBA
Operating Pressure90 – 110kPa
Effect of PositionNo effect in typical application
Long Term DriftZeroTBA
Sensitivity< ± 3% of measured value / 6 months
Calibration GasAmmonia (NH3)
Challenge Gas (Bump Test)Ammonia (NH3)
Warm Up Time< 10 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 NH3)
Carbon DioxideCO250000
Carbon MonoxideCO1000
Hydrogen ChlorideHCl10-4
Hydrogen SulfideH2S202
Iso PropanolC3H7OH10000
Nitrogen DioxideNO210-0.5
Sulfur DioxideSO220-40

Additional information

Weight 1 lbs