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MMS-NG

Automatic mercury monitoring in natural gas

Automatic system designed for continuous mercury monitoring in natural gas even in hazardous zones (ATEX, IEC-Ex).

 

Each mercury on-line system will differ in sample characteristics as well as installation conditions and operating environment. We have the experience to design systems that fully meet the requirements of your particular mercury monitoring task.

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FEATURES AND BENEFITS

  • Automatic and continuous measurement
  • Fast and Reliable Results
  • Detects Elemental and Bound Mercury
  • Automatic Calibration
  • Sample Point Multiplexer
  • Sample Dilution for High Concentrations
  • No Carrier Gases Required
  • Certified for Hazardous Zones

MAIN APPLICATIONS

  • Natural gas platforms
  • Natural gas exploitation
  • Natural Gas processing plants
 
 

TECHNICAL INFORMATION

Measuring principle

Amalgamation (MI GoldTrap), cold vapor atomic absorption (CVAAS) at 253.7 nm

UV-Source

Electrodeless low pressure mercury lamp (EDL)

Stabilization method

Reference beam method

Optical cell

Fused silica (Suprasil), l: approx. 230mm, heated approx. 45°

Measured component

Total Gaseous Mercury (TGM)

Measuring ranges

lowest range:
0.1 ng/m³ – 1000 ng/m³ (at 10 l sample gas volume);

medium range: 1 ng/m3 – 10 000 ng/m3 (at 1 l sample gas volume);

screening mode: 10 ng/m3 – 30 000 ng/m3 (at 0.1 l sample gas volume)

Detection limit

1 pg absolutely or 0.1 ng/m3

Linearity over the 0.2 to 15000 ng/m3 range

3% or better

Reproducibility

5% or better

Signal output: analogue

4-20 mA; serial: RS232; Modbus RTU RS485 (option); Ethernet (option)

Status output

3 x pairs of relay contacts (dry contacts)

Max. sample temperature

80 °C

Operating temperature

0- 35°C; -5 – 55 °C (air conditioned)/td >

Power supply

230 VAC / 50 Hz (110 VAC / 60 Hz option)

Power consumption, Dimensions and Weight

depending on characteristics and customer demands

APPROVALS & CERTIFICATIONS

Certified:

  • Our products are manufactured according to the ISO 9001 quality regulations.
  • CE approved
  • Hazardous zone certification: ATEX 2G IIC T4 EExp (or equivalent)
  • Calibration: ISO/DIS 6978-3; ASTM D 5954; VDI 2267 Part 8; NIST recommendations
  • Sampling and mercury determination: ISO 6978-1; ASTM 5954

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