H2S Medor - Hydrogen Sulfide (H2S) Analyzer

H₂S Medor is an online Gas Chromatograph dedicated to the analysis of H₂S present in different matrices.
Two versions of the instrument exist : 

• H₂S Medor ppm (measuring at ppm levels)
• H₂S Medor ppb (measuring at ppb levels)

• Internal pressure & temperature monitoring
• Sample loop injection is made by automatic valve
• H₂S Medor uses a sulphur specific electrochemical cell for the detection of H₂S

• Online, continuous sampling
• No interference from other compounds
• Low maintenance instrument – detector life may be up to 10 years
• Automatic Validation of results by Internal Permeation Tube
• Modifiable threshold alarms – High / Low alarm for deodorising processes

Chromatotec developed software system enables :

• Remote monitoring & injection control
• Full traceability with on board archiving of results and QC Set up and control of threshold alarms
• Export of data MODBUS / MGS1 / 4-20mA / 0-10V

• Multiple stream selector (up to 16 streams with one analyser)
• Modeling software with weather station for live odor/chemical impact
• Explosion proof version Exp or Exd for ATEX, IECEx zone 1 and 2 and also for CSA C1D2 group B , C & D T4
• Calculation modules (Average / Statistics / Odor unit OU e/m3 and more)
• Automatic data transfert through: Module for 4 outputs 4-20 mA (with 0 mA for instrument default) / 0 - 10 V / MODBUS RTU or TCPI IP or MGS1
• Nitrogen or air generator for safe and hazardous area
• 24 V DC power supply
• Electric selection valve to reduce air consumption
• Wall mounted box XXX934
• Liquid injection valve for LPG analysis
• Touch screen on the front panel for Exp version (only ATEX)
• External cylinder inlet for automatic calibration from external cylinder
• MFC for multipoint calibration from internal CALIB and/or from cylinder
• Zero method

Detection Limit:

• H2S MEDOR® ppm :
• H2S : 0.1 ppm (0.1417 mg/m3)
• H2S MEDOR® ppb :
• H2S : 1 ppb (1.39 μg/m3)

Range (adjustable depending on application):

• 0/10 or 0/100 or 0/1000 (ppb or ppm)

Relative Standard Deviation:

• RSD < 3 % on concentration over 48H
• RSD < 0.5% on retention time over 48H

Cycle Time:

• H2S 120 s for 0 - 3 ppm range
• H2S 300 s for higher range

Supervisor:

• Embedded computer Windows® based with LCD display
• 128 GB of Hardware storage on SSD memory

Communication:

• MODBUS RTU included in standard
• Ethernet, remote control

Gas supply:

• Carrier: Dry air or N2 (3 bar): < 4 ml/min
• Internal calibration: 50 ml/min for ppm range
• Sample inlet 1 bar and 160 ml/min sample flow
• Pneumatic valve 90 ml/commutation

Power supply:

• Main: 230 V / 115 V or 50/60 Hz
• Power: 24V (optional)

Electrical consumption:

• Average: 150 VA

Dimensions and weight:

• Rack: 19" (5U)
• Height: 222 mm
• Width: 482mm
• Depth: 600 mm
• Net weight: 22 Kgs