• MA: Direct thermal decomposition mercury analyzer
  • PE: Fully automated petro-pyrolysis mercury analyzer
  • RA: Reducing-vaporization mercury analyzer
  • WA: Atmospheric mercury analyzer
  • EMP: Portable mercury survey meter
  • EMP-3
  • SGM-9

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Portable mercury survey meter: EMP series

Portable mercury survey meter

EMP series

Model name of EMP series



The EMP series was developed in response to our customer’s needs for a simpler method to measure gas-borne mercury at sites. Since the main body weighs less than 2 kg, the light-weight and compact body can be safely carried to and handled in high places by the use of a waist belt and a shoulder strap.

EMP-3 realizes more comfortable operability compared to our previous models such as adoption of GPS function, splashed-proof seamless design and wider measurement range, and it will be active in more diverse measurement scenes.

The newly adopted Ni-MH battery allows for approximately 5 hours of continuous operation when fully charged, and the battery can be easily replaced.

Additionally, the equipment uses a color LCD touch panel, which enables intuitive and easy operation with a single finger.

By adopting the cold vapor atomic absorption spectroscopy, real-time measurement with higher accuracy is realized.

Furthermore, the series offers a variety of optional units.

  • Measurement of mercury in high-concentration environments → “Hi-Lutor”
  • Reducing-vaporization mercury measurement → “AQUA kit”
  • Mercury measurement in stack gas → “SGM-9”

See Applications for details.


Typically for mercury measurement during fluorescent lamps manufacturing, crushing and re-cycling; mercury concentration monitoring in the facility workplace; hazardous waste inspection and screening; and workplace/worker safety and hygiene survey.

The EMP series excellent expandability also allows for a greater range of applications by connecting various optional units.

  • The combination with the Hi-Lutor realizes a high concentration mercury measurement of up to 20,000µg/Nm3.
  • The combination with the AQUA kit realizes on-site mercury measurement in a liquid sample through simplified reducing-vaporization.
  • The combination with the WLE-9 realizes continuous mercury measurement in stack gas. (SGM-9)

Measurement flow

Once the measurement has started, a fixed amount of gas (sample gas) in the working environment is continuously taken into the equipment from the tip of the probe until the measurement is complete. The measurement continues while the equipment is automatically performing zero-point adjustment on a periodical basis.

Cold-vapor atomic absorption spectroscopy at wavelength 253.7nm is adopted for detection.

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