MERCURY MONITOR RA-915AM
continuous mercury measurements in ambient air, indoor air and in natural gas
RA-915AM monitors are designed for continuous mercury measurements in ambient air, indoor air and in natural gas. Ideal for permanent unattended installation at air monitoring stations, RA-915AM monitor for ambient air allows ultra-sensitive measurements of background Hg concentrations and is compliant with the European standard EN 15852 for ambient air monitoring.
The monitors feature fully-automated unattended operation without the need for the monthly technician maintenance and frequent recalibration. The use of the instrument allows cutting down operation costs as the analyzer requires no argon cylinders for operation and no consumables.
The remote data transfer makes it possible to connect the monitor to data collection systems via RS232, Modbus, and analogue output.
FEATURES AND BENEFITS
- Direct continuous measurements
- Low detection limit and wide range of measurement
- Highest selectivity
- No chemicals, no carrier, and zero gases
- Stable calibration
- Automatic zero drift and span drift correction
- Automatic recalculation to standard conditions
- Auto control and preventive maintenance functions
- Robustness and low maintenance
- Customized operation parameters and communication protocol
PRINCIPLE OF OPERATION
Atomic absorption with Zeeman background correction.
INSTALLATION
The RA-915 AM monitor is designed for indoor operation or installation in climate-controlled cabinets. The embedded PC controls the measurement procedure, data processing, and data transfer via RS-232/485 interface or current loop. Optional multiplexer enables sampling from 2 to 16 points. The monitor can be installed in a standard 19-inch rack.
EQUIPMENT AND OPTIONS
- RA-915AM Air Mercury Monitor
- On request monitors may be equipped with a flow switching device for multiple sampling points
| Measurement range |
0–150 000 Range II, ng/m3, 0–2 000 Range I, ng/m3, 0–3 000 000 Range III, ng/m3 |
|---|---|
| Limit of detection (LOD) |
0.1 Range I, ng/m3, 10 Range II, ng/m3, 200 Range III, ng/m3 |
| Zero drift correction |
Automatic |
| Span correction |
Automatic |
| Air flow rate |
7–10 L/min |
| Air temperature |
-20 to +40 °C |
| Number of sampling points |
2 – 16 |
| Sampling line |
up to 150 m |
| Communication ports |
RS 232/435; 2 x USB; LAN; Isolated 4–20 mA, Modbus (LAN or RS-485) |
| Status outputs |
MEASURING; ZERO CONTROL; CALIBRATION; SERVICE; FAILURE |
| Power requirements |
110/240 VAC, 50/60 Hz; max 120 VA |
| Size, mm |
665 x 482 x 222 |
| Weight, kg |
Analyzer 25, Multiplexer (2-16 lines) 15 -25 |
| brand |