Continuous gas-borne mercury monitor
The AM-4 is an unmanned continuous mercury analyzer by thermal decomposition with ultra-high sensitivity and a wide measurement range
Highest grade model of Continuous mercury monitor developed by customers’ wish
Our customer’ s wish “to continuously monitor general environment air” or “to continuously monitor flue gas while avoiding effects from interferences” inspired us to develop this highest grade model that measures mercury intermittently and continuously by thermal decomposition.
The AM-4 has ultra-high sensitivity and a wide measurement range from 0.01ng/m3 to 2mg/m3, and mercury can be measured without being affected by interferences.
Mercury analysis by atomic absorption spectrometry without any affection by interferences
After removing moisture in the sample gas, mercury alone is condensed and sampled as gold amalgam in the mercury collector tube. During that time, interferences not needed for measurement such as organic solvents, SOx and NOx are removed, and not collected in the collector tube.
Then, the mercury collector tube is re-heated, and vaporized mercury is measured by atomic absorption spectrometry.
The equipment itself is dedicated to metal mercury sampling (zero-valent mercury), however, by adding the pretreatment equipment (optional), total mercury including oxidized mercury (divalent mercury) can be measured.
Accurate measurement is realized using the mercury standard gas generator
By using the automatic calibration function in the mercury standard gas generator (optional), you can ensure accurate measurement without compromising data reliability.
Also, there is no need to prepare special carrier gas for the AM-4 and the mercury standard gas generator. Since purified ambient air is used, installation is easy, economical and safe.
|Mercury collecting section||Method||Gold amalgamation method|
|Sampling flow rate||0.1L/min~0.5L/min (adjustable)|
|Measurement career gas||Purified air by activated carbon filter|
|Mercury detecting section||Measurement principle||Double-beam cold vapor atomic absorption spectrometry|
|Detector||Photo-tube, Semiconductor sensor|
|Detection Limit||0.001ng (0.01ng/m3)|
|Measurement range||LOW range: 0~5ng|
MID range: 0~100ng
HIGH range: 0~1000ng
|Minimum display digit||0.0001mg/m3N|
|Repeatability||±2% against maximum scale value|
|Zero drift||±2% against maximum scale value|
|Span drift||±2% against maximum scale value|
|Directions Error||±3% against maximum scale value|
|Stability of direction value against power supply voltage||±2% against maximum scale value|
|Input-Output Signal||Analog Output||Mercury concentration (Instant value): DC4~20mA|
|Contact Output||Rated load: AC250V 5A, DC30V 5A|
|Contact Input||External start input|
|Data Output||PC connection or SD card|
Mercury analysis in Gas: General environment, Working environment, Flue gas
No special options available.