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
All-in-one Architecture
Filter tape advancing system, XRF tube/detector module and flow/electrical control system are fully integrated within an enclosure.
Built-in PM Option
Very low ownership of extended TSP/PM10/PM2.5 monitoring that can be used for source identification analysis.
User Friendly Software
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.
Lower Cost of Ownership and Service
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 |