Acoem Serinus 44 | Gas Analyser NO / NO2 / NOx / NH3

The Acoem Serinus 44 gas analyzer measures nitrogen oxides (NO, NO2, NOx, and NH3) in ambient air using its proven chemiluminescence technology.

The Serinus 44 is a powerful device that delivers precise and reliable performance, enabling governments and organizations to reduce their environmental footprint while complying with global regulations. It uses gas-phase chemiluminescence detection for continuous analysis of nitric oxide (NO), total nitrogen oxides (NOx), and nitrogen dioxide (NO2), as well as an external catalytic thermal converter for ammonia (NH3) analysis.

The instrument consists of a pneumatic system, a NO2-to-NO converter, a reaction cell, a measurement cell (PMT), an ozone generator, and a main PCA controller.

• Measurement range:
  0 – 20 ppm (autoranging)
  (Analog ranges: 0 – 50 ppb to 0 – 20 ppm)
  (NH3 range determined by the external converter, typically ~2 ppm)

• Concentration display:
  User selectable in mg/m³, μg/m³, ppm, ppb, or ppt

• Noise:
  < 0.2 ppb

• Lower detection limit:
  < 0.4 ppb or 0.5% of the reading, whichever is greater

• Linearity:
  < 1% of full scale

• Precision:
  0.4 ppb or 0.5% of the reading, whichever is greater

• Zero drift:
  24 hours: < 0.4 ppb
  7 days: < 0.4 ppb

• Span drift:
  7 days: < 1% of the reading or 0.4 ppb, whichever is greater

• STP reference:
  0 °C, 20 °C, 25 °C at 101.3 kPa

• Sample flow rate:
  900 cc/min (total for 3 channels)

• Temperature range:
  0 – 40 °C

• Power supply:
  100 – 240 VAC, 50 – 60 Hz (autoranging)

• Power consumption:
  265 VA (maximum at start-up)
  190 VA (after warm-up)

• Dimensions:
  429 x 175 x 638 mm

• Rack spacing:
  3.5 RU

• Weight:
  21.85 kg

• Communication ports:

  • USB port (digital communication)
  • Bluetooth (digital communication via Android app)
  • Ethernet TCP/IP network connection (optional)
  • RS232 Port 1: Digital communication
  • RS232 Port 2: Multipoint port
  • Advanced Modbus RTU/TCP protocol
  • 25-pin I/O port (analog outputs, analog inputs, digital state inputs, digital state outputs)

• Data logging:

  • Removable USB flash memory capable of storing data in the following formats:
    • Instantaneous data: 1, 3, 5, 10, 30, or 60 minutes
    • Averaged data: 1, 3, 5, 10, 15, 30 minutes, 1, 4, 8, 12, or 24 hours
  • Storage capacity: 10 years of data for 12 parameters
  • 1-minute data storage for 8 GB of memory