Ambient Metal Analyzer

Overview
AMMS-100, the latest XRF based metal analyzer of FPI, realizes continuous & unattended monitoring. The AMMS-100 uses an automated movable filter tape to collect particulate sample. The sample is drawn through a PM size-selective inlet and concentrated on a small spot on the tape. The tape then advances, placing the collected sample spot in X-ray section for analysis. The process of sampling and analysis is fully automated and flow automatically controlled, left only the replacement of filter tape periodically.
Principle

The AMMS-100 works based on the principle of X-ray fluorescence (XRF), in which X-rays bombard the atom and expel tightly held electrons from the inner orbitals of the atom. The removal of an electron in this way makes the electronic structure of the atom unstable, and electrons in higher orbitals fall into the lower orbitals to fill the vacancy left behind. In falling, energy is released in the form of a photon, which has wavelength characteristic of the atom present. 1) Mass of metals in the sample is obtained by detecting the intensity of X-ray fluorescence, and 2) Volume of the sample is regulated by MFC (mass flow controller). Finally the concentration of metal in the sample is calculated through the equation below.

Features and Benefits

Filter tape advancing system, XRF tube/detector module and flow/electrical control system are fully integrated within an enclosure.

Very low ownership of extended TSP/PM10/PM2.5 monitoring that can be used for source identification analysis.

Robust main interface with dynamic display of sampling & analysis status, selectable metal concentration output in forms of figures and graphs. All data traceable and can be exported in different formats. Daily, weekly, monthly, yearly reports and graphs can be produced.

Attributing to FPI’s proprietary technologies and superior supply chain management, the cost of the analyzer, and cost of the replacement of X-ray tube and filter tape is reduced.

Technical Data
Specification Metal PM
Method of   Detection XRF (USEPA Method IO 3.3) Beta-ray Attenuation
Range 0-100 μg/ m3 0-200/0-500/0-1000/0-5000 μg/m3
Detection Limit 0.01-1ng/m3 with 240 mins sampling and analysis time, 16.7L/min flow rate 2 μg/m3
Repeatability < 1.5% (Pb calibration standard＜5μg/cm2) < 2% (against reference foil value)
Elements Pb,   Cd, Hg, As, Cr, Cu, Zn, Ni, Ba, Fe, Ag, Se, Br, Te, Sb, Sn, Ti, Co, Mn, Pd,   Tl, Sc ,  Mo, V,  Ca, K, Ga, Cs, 28 metal elements.
Linearity Correlation coefficient > 0.99 (Pb)
Sample Flow Rate 4-20L/min adjustable, 16.7L/min standard
Sampling & Analysis Time 10-300 mins   selectable
Filter Tape Replacement 2 months (a roll of   100m filter tape, sampling & analysis time 1 hour)
Size & Weight V2.0:   444mm(H) * 430mm(W) * 520mm(D) , about 40kg
V3.0:   534mm(H) * 430mm(W) * 520mm(D) , about 50kg
Operating   Conditions
Power Supply 220   (1±10%) V AC, (50±1) Hz
Power Consumption <1500   W
Operating   Temperature -20-50℃ with air   conditioned to keep main analyzer work at 5-35℃
Outputs RS232,   RS485, Ethernet, GPRS
Modes of   Deployment Rack Mounted, Vehicle Borne, or Incorporated with   Criteria Ambient Monitoring Station