Natural gas analyzer RA-915AMNG

airbenchtopcontinuous monitoring

About
RA-915AMNG monitors are designed for continuous mercury measurements in natural gas streams. They are intended for permanent, unattended installation at gas monitoring stations and for rapid on-line analysis to detect concentration changes and to support MRU units and similar applications.

Principle of operation
Atomic absorption spectroscopy with Zeeman background correction.

Features and benefits

• Direct continuous measurements
• Low detection limit and wide measurement range
• High selectivity
• Long-term calibration stability
• No reagents, carrier or zero gases required
• Automatic zero drift and span correction
• Automatic recalculation to standard conditions
• Automatic control and preventive maintenance functions
• Robust design with low maintenance needs
• Customizable configuration

Installation
The RA-915AMNG monitors are designed for indoor use or installation in climate-controlled cabinets and can be mounted in a standard 19 inch rack.

Equipment and options

• RA-915AMNG Air Mercury Monitor
• Optional flow switching device for multiple sampling points (on request)

Warranty
All of the Lumex equipment is covered by a 12-months warranty.

Specifications
Parameter | Range I (ng/m3) | Range II (ng/m3) | Range III (ng/m3)
Measurement range | 0–2 000 | 0–150 000 | 0–3 000 000
Detection limit | 1 | 50 | 500
Averaging interval | 5 min | Optional > 2 sec (for other ranges) | Optional > 2 sec
Zero drift correction | Automatic | Automatic | Automatic
Span drift correction | Automatic | Automatic | Automatic

Sampling gas condition
Gas pressure | Atmospheric (+/-20%) | Atmospheric (+/-20%) | Atmospheric (+/-20%)
Flow rate | 4–10 lpm (Ranges I & II) | 4–10 lpm (Ranges I & II) | 0.5–10 lpm (Range III)
Gas humidity | Dew point < 10 °C | Dew point < 10 °C | Dew point < 10 °C
Gas temperature | +1 to +40 °C | +1 to +40 °C | +1 to +40 °C

Concentration of H2S | ≤ 50 mg/m3 (Range I) | ≤ 200 mg/m3 (Range II) | ≤ 1000 mg/m3 (Range III)
Concentration of benzene | ≤ 10 mg/m3 | ≤ 200 mg/m3 | ≤ 2000 mg/m3
Concentration of mercaptans | ≤ 50 mg/m3 | ≤ 200 mg/m3 | ≤ 1000 mg/m3
Concentration of aromatic compounds | ≤ 200 mg/m3 | ≤ 2000 mg/m3 | ≤ 10000 mg/m3

Data communication
Communication ports | 4-20 mA current loop; 2 USB; RS 232; LAN
Communication protocols | Standard: GESYTEC protocol, Modbus
Status outputs | WORK, SERVICE

Dimensions, Weight, Power requirements
Power | 110/220 V, 50/60 Hz; 120 VA
Dimensions | 600 x 480 x 220 mm
Weight | 20 kg