GC chromatograph energyMEDOR®

for sulfur compoundsindustrial gasprocess

Overview
The energyMEDOR® is an automatic, isothermal gas chromatograph dedicated to the analysis of sulfur compounds (H2S, mercaptans and sulphides) in gaseous matrices. Two versions are available: energyMEDOR® ppm for ppm-level measurements and energyMEDOR® ppb for ppb-level measurements.

Application
Online, continuous monitoring and control of sulfur compounds in natural gas and industrial gases, including H2S, mercaptans, THT and total sulfur. Suitable for odorization monitoring and safety control in gas distribution and processing.

Principle

• Loop injection using an automatic valve for repeatable sampling
• Detection by a gas–liquid reaction specific to sulfur compounds
• Sulfur-specific detector with minimal interferences
• Detector life in excess of 10 years under typical operating conditions

Features

• Online continuous sampling for real-time surveillance
• No interference from non-sulfur compounds
• Low-maintenance instrument with long detector lifetime
• Automatic validation of results using an internal permeation tube
• Configurable threshold alarms (High/Low) for odorizing processes

VISTACHROM® software

• Remote monitoring and injection control
• Full traceability with on-board archiving of results
• QC setup and management of threshold alarms
• Data export and integration: MODBUS / MGS1 / 4-20 mA / 0-10 V

Standards, Approvals & Certifications

• ASTM D7493 – 08
• ATEX or IECEx: Zone 1 and 2 – II 2 G Ex pxb IIC T4 Gb
• ATEX or IECEx: Zone 1 and 2 – IIB+H2 T4 Gb
• GOST-R

Technical specifications

• Detection limits: H2S: 0.1 ppm (0.1417 mg/m3), mercaptans: 0.1 ppm; H2S: 5 ppb (7.0 µg/m3), mercaptans: 5 ppb
• Detection range: 0/10 or 0/100 or 0/1000 (ppb or ppm)
• Relative Standard Deviation (RSD): RSD < 3% on concentration over 48 h; RSD < 0.5% on retention time over 48 h
• Results / On-board computer: Embedded Windows®-based computer with LCD display; 32 GB SSD storage; MODBUS protocol included as standard
• Cycle time: H2S/MM/EM: 300 s; H2S, mercaptans1, THT: 720 s; H2Sn, mercaptans1, THT: 900 s; H2S, mercaptans2, THT: 1200 s
• Linearity: R² > 0.995 for all compounds
• Gas supply / Pneumatics: Carrier: dry air or N2 (3 bar): < 4 ml/min; use N2 if THT is present; internal calibration: 50 ml/min for ppm range; sample inlet: 1 bar; pneumatic valve: 90 ml/commutation