Mercury Vapor Monitor Model VM 3000

Continuous Mercury Measurement in Air and Other Gases

VM 3000 Mercury Vapor Analyzer

The VM-3000 Mercury Vapor Monitor measures the elemental mercury vapor concentration in air and other gases continuously. It is used in the laboratory or can be installed at places where mercury has to be monitored. Industry people use the VM 3000 Mercury Sniffer as well as university researchers or safety people. It is a great tool for plenty of different applications: work place monitoring, exhaust air monitoring, emissions monitoring in the chemical industry, ground air screening of contaminated areas, quality control of hydrogen and other gases, If you need to monitor for mercury continuousely, this is the right mercury vapor analyzer for you.

  • Real Time, Continuouse Mercury Vapor Monitoring
  • Sensitive detection method: UV absorption (CVAAS)
  • 3 mercury measuring ranges
  • 0-100 / 0-1000 / 0-2000 µg/m³
  • Sensitivity: 0.1 µg/m³
  • Data logger integrated (optional)
  • No need for constant calibration
  • No detector regeneration required
  • No detector saturation
  • Automic and Manual Auto Zero
  • Heated optical cell avoids condensation
  • Can be adapted to a laboratory device for liquid and digested solid samples
  • Hg Analyst Software with real time graph and email alert system (optional)

    Mercury Detector

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    Typical Applications for the VM 3000 Mercury Vapor Monitor

  • Health and Safety
  • Hazmat mercury response
  • Occupational Hygiene
  • Work Place Monitoring
  • Mercury Spill Screening
  • Mercury Surveys
  • Investigation of Contaminated Sites
  • Environmental Monitoring
  • Hazardous Waste Inspection
  • Mercury Vapor Analyzer Measuring Principle

    The sample gas is fed into an optical cell by a maintenance-free membrane pump. A beam of UV light passes through the optical cell, a part of it is absorbed by the mercury atoms present in the sample. This method is called "atomic absorption spectroscopy" or shortly AAS. It is extremely selective and sensitive. For mercury determination the AAS method has maintained its importance even if other methods have been worked out since the early beginnings. The AAS method is low in interference and does not require an amalgamation step or expensive carrier gases.

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    Analytical Performance of Mercury Vapor Analyzer

    The VM 3000 mercury vapor monitor uses a high frequency driven electrodeless low pressure mercury lamp as UV source. This lamp emits lines of an extremely narrow bandwidth which are congruent with the absorption lines of the Hg atoms. Cross-sensitivities are thus minimized.

    Unlike the gold film based system, mercury vapor measurements are not interfered with by hydrogen sulfide (H2S) or water vapor. The extremely high stability of the UV source is a result of the reference beam feedback control method. Total background noise is less than 0.1 µg/m³. The VM 3000 mercury analyzer is calibrated before delivery and keeps the calibration for a long period of time. For quality control a test screen is included allowing the user to check calibration.

    Mercury Vapor Detector Design Features

  • Metal housing with sturdy handle
  • Option: Rack version with mounting brackets for 19" racks
  • Membrane pump with long service life
  • Input filter with easily replaceable filter membrane
  • Factory-calibrated- no need for frequent recalibration (short term factory recalibration service available)
  • 4-20 mA output and RS232 communication
  • Alarm output (optional alarms can be sent to Email, SMS TXT, Visual Alarms, Sound Alarms etc...)
  • Data Logger (optional)
  • Hg Analyst Software with email alert system (optional) Allows for remote viewing of instrument reading in real time from a smart phone, tablet or PC
  • Can be configured in Multi Point MMS system to measure from 8 - 24 sample points
  • VM 3000 Mercury Vapor Monitor

    Easy to operate mercury vapor analyzer

    The user controls the VM 3000 by menu guided inputs via a waterproof membrane keypad. After switch-on the light source is stabilized (approx. 1-5 minutes). When the measurement mode is started, a zero adjustment is first carried out automatically. Then the analyzer switches to measurement and continuously indicates the measured mercury content of the gas as a numerical value and a graphic bar.

    The following settings are possible in the parameters menu:
    • Duration and Repeat interval of zero adjustment,
    • Selection of concentration unit (ug/m3 or ppb)
    • Measuring range (0.1-100, 1-1000, 1-2000 ug/m3)
    • Input of three different alarm levels
    • Calculation of a mean value over three freely selectable time intervals
    • Printer activation
    • Sample dilution factor
    • Self-Diagnosis of Mercury Locating System: Important components of the VM 3000 are permanently monitored. In case of malfunctions the user is warned on the display (blinking messages: clean cell, lamp) and via output signals.
    • VM 3000 Mercury Vapor Monitor Brochure

      Click Brochure Above to Download PDF

      VM-3000 Mercury Vapor Monitor Technical Specifications

      Measuring principle: UV-Absorption
      Wavelength: 253,7 nm
      UV source: electrodeless low-pressure mercury lamp (EDL)
      Measuring cell: fused silica, heated to avoid condensation
      Stabilization method: lamp control by reference beam feedback; Auto-zero
      Measuring ranges: range I: 0.1 to 100 µg/m³ (0.01-10 ppb)
      range II: 0 to 1000 µg/m³
      range III: 0 to 2000 µg/m³ (0-200 ppb)
      Sensitivity: 0.1 µg/m³ (0.01 ppb)
      Response time
      (99% signal):
      < 1 second ; continuous operation and real-time reading
      Alarm: 3 levels programmable
      Status alarms: measuring cell soiled, battery state (option, UV source exhausted
      Display: graphical LC display with background illumination
      Signal outputs: 4...20 mA; RS 232 for PC or printer ; data logger function (option)
      Battery option: external 12 DC source; optional 12 V batteries integrated, ca. 5h capacity
      ISO 9001 As a leading supplier of high precision analytical equipment, we strive at all times to offer top quality solutions. Our products are manufactured according to the ISO 9001 quality regulations.