Mercury is recognized as an element of global concern due to its long-range transport in the atmosphere, its persistence in the environment, its ability to bio-accumulate in ecosystems and its
negative effect on human health and the environment. Mercury can produce a range of adverse human health effects, including permanent damage to the nervous system, in particular the developing nervous system. Due to these effects, and also because mercury can be passed from a mother to her unborn child, infants, children and women of child bearing age are considered vulnerable populations. Mercury is absorbed into the human body through 3 primary paths̶ inhalation, ingestion and dermal absorption. Studies show as much as 75% of the inhaled mercury vapor may be retained in the human body which causes neurological toxicity.
Today, most people are more aware of the dangers of mercury and many of its uses have been discontinued. However, mercury exposure is still an occupational hazard for people in many industries and mercury is present in the environment around us in areas such as the oil & gas sectors, gold mining, dental amalgams, fluorescent lamp production, etc.
Portable Mercury Survey Meter | 空氣水銀測試儀
Samples
Workplace, ambient air, petroleum gases, liquid samples (*1)
Measuring principle
Non-dispersive double-beam cold vapor atomic absorption spectrometry
Light source
Low-pressure mercury discharge lamp
Detector
Semiconductor detector (with a 254 nm band-pass filter)
Detection limit
0.1 μg/Nm3 (Normal)
Measuring range
0‒2000 μg/Nm3 ; 0‒20000 μg/Nm3 (*2) *2 when used with Hi-Lutor option
Flow rate during measurement
~ 1 L/min
Precision
RSD 3% (2μg/Nm3 or higher) without any option
Zero correction
Automatic zero correction
Resolution
STATIC mode (Stationary mode) : 0.1 μg/Nm3 ( ~ 999.9)
MOBILE mode (Portable mode) : 1 μg/Nm3
Display
4.3-inch color LCD (480 x 272 pixels, 16.77 million colors)
Operation
Touchscreen
Onscreen data
Instantaneous value, average value, maximum value, trend graph (on a specified time scale), level gauge (linked with an alarm setting)
Data logging
Saved in CSV files or in the internal onboard 4GB memory (capacity up to 20,000 hours)
Data output
USB flash drive
Alarm method
Alarm buzzer and screen flashing (The alarm setpoint is configurable.)
Other functions
Temperature compensation, pressure compensation, GPS information recording
Power source
Dedicated nickel hydride battery (continuous operation : 5.5 hours at 25°C)
Operating conditions
Temperature : 0‒45°C, humidity : 10‒80%RH (No dew condensation)
Dimensions, weight
207W x 115D x 140H, 1.6kg (including the battery)
Standard accessories
Probe, probe filter (x1), battery (x1), battery charger, shoulder/waist belt, USB flash drive