Description
Honeywell MIDAS-E-HAL
Technical Specifications
- Detected Gas: Hydrogen Bromide (HBr)
- Measurement Range: 0 ppm to 8 ppm
- Resolution: 0.1 ppm
- Warm Up Time: Less than 10 minutes
- Operating Temperature: 0°C to +40°C
- Storage Temperature: 5°C to +25°C
- Operating Humidity: 10% to 90% RH non-condensing
- Operating Pressure: 90kPa to 110kPa
- Expected Service Life: Minimum 24 months under typical operating conditions
- Communication Interface: MIDAS internal cartridge bus
- Certification: CE, SEMI S2, IECEx
Functional Features Automatic cartridge identification and parameter loading by MIDAS host. Built-in temperature compensation circuit reduces measurement drift caused by ambient temperature variation. It uploads real-time gas concentration, sensor aging status and flow fault information to main controller. It supports zero and span calibration with certified hydrogen bromide standard gas. It outputs fault alarm signal when sensing cell is poisoned or depleted. It supports hot swap replacement without host power shutdown. It has internal flow restriction structure to match MIDAS sample pump flow rate.
Application Scenarios Semiconductor wafer fab etching process HBr gas monitoring Cleanroom toxic gas cabinet leak detection Solar panel thin film manufacturing process gas monitoring University research laboratory hydrogen bromide cylinder storage area monitoring Chemical pilot plant corrosive toxic gas monitoring MIDAS gas detector spare HBr sensor cartridge replacement
Performance Parameters
- Measurement Accuracy: ±10% of reading or ±0.2ppm, whichever is greater
- Long Term Drift: Less than ±10% of measured value within six months
- Response Time T90: Less than 60 seconds
- Temperature Zero Drift: Less than ±0.05ppm / °C
- Temperature Sensitivity Drift: Less than ±3% of measured value / °C
- Mean Time Between Failures: 700000 hours
Material Composition Chemical resistant PPS plastic cartridge housing Electrochemical hydrogen bromide sensing cell SMT signal conditioning PCB with non-volatile memory chip Precision thermistor for temperature compensation Gold plated contact pins for communication PTFE hydrophobic filter membrane for gas inlet Corrosion resistant internal flow channel fittings
Structural Features Pluggable cartridge body matched to MIDAS side slot. Gas inlet and outlet ports connect with host sample flow tubing. Rear gold contact pins realize power supply and digital communication with main transmitter. Internal flow channel is made of corrosion resistant material to avoid HBr gas corrosion. Sealing fluorine rubber O-ring prevents gas leakage. Anti-key notch prevents inserting wrong gas cartridge into the detector.
Working Principle Sample gas is drawn by MIDAS internal pump and flows through cartridge corrosion resistant flow channel. Hydrogen bromide molecules diffuse into electrochemical sensing cell and generate current signal proportional to gas concentration. Signal conditioning circuit amplifies raw signal and compensates temperature deviation. Digital data is transmitted to MIDAS main controller. The host compares measured value with alarm threshold and triggers toxic gas alarm when concentration exceeds setting value.
Installation Requirements Shut down MIDAS host power supply before cartridge replacement. Pull out old cartridge from side slot. Insert MIDAS-E-HAL cartridge fully until locking position. Restart host power and wait for automatic recognition and warm up. Perform zero calibration in clean air and span calibration with certified HBr standard gas. Check sample tubing for leakage after calibration.
Usage Notes Hydrogen bromide is highly corrosive toxic gas, all calibration and maintenance must follow site safety procedure. Do not expose cartridge to high concentration acidic or alkaline vapor which causes irreversible sensor poisoning. Replace cartridge immediately after end of service life. Avoid liquid water entering the flow channel. Store spare cartridge in sealed original packaging in cool dry storage cabinet.
