Ambient Air Industrial RA-915AM Mercury Analyser


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



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.

Technical Specifications
Range I,
Range II,
Range III,
Measurement range0–2,0000–120,0000–3,000
Limit of Detection0.5100.2
Zero drift correctionAutomatic
Span correctionAutomatic
Ambient air conditions
Air flow rate7–10 L/min
Air temperature-20 to +40 °C
Sampling with multiplexer
Number of sampling points2 – 16
Sampling lineup to 150 m
Data output
Communication portsRS 232/435; 2 x USB; LAN; Isolated 4–20 mA, Modbus (LAN or RS-485)
Dimensions, Weight, Power requirements
Power requirements110/240 VAC, 50/60 Hz; max 120 VA
Size, mm
665 x 482 x 222
665 x 482 x 222
Weight, kg
Multiplexer (2-16 lines)
15 - 25

Principle of Operation

Atomic absorption with Zeeman background correction.


Equipment and Options

RA-915AM Air Mercury Monitor.

On request monitors may be equipped with a flow switching device for multiple sampling points


Complete Mercury Analysers Range

Portable RA-915M Mercury Analyser

RA-915 Lab Mercury Analyser

Compact Light-915 Mercury Analyser

RA-915M With Pyrolyzer Pyro-915+ Mercury Analyser

Liquid RA-915M/RP92 Mercury Analyser

Ambient Air Industrial RA-915AM Mercury Analyser

Natural Gas Industrial RA-915AMNG Mercury Analyser

Mercury Monitoring Toolkit

Contact us

If you have any questions or require further information, please do not hesitate to email us at [email protected], call us on +44 (0)113 286 4536 or submit a contact form.