ABB 769137 C 13CO2-10% 0746919 E EL3020 Series Accessories

Integral air inlet

The integral air inlet (option) is available in two versions. It includes

- Microfilter and flow sensor module

- or microfilter, solenoid valve, pump, coarse filter, capillary tube and flow sensor module.

Electrical interface

Electrical interfaces for outputting measured values and communicating with external systems include Electrical interfaces for communicating with external systems include:

- Integrated Ethernet-10/100BASE-T interface (for service and configuration and configuration) Integrated Ethernet-10/100BASE-T interface (for service and configuration purposes) Functional range and ordering

- Analog output module with 2 analog outputs,

- Analog output module with 2 analog outputs, digital input/output module with 4 digital inputs and 4 digital outputs and

Digital input/output module with 4 digital inputs and 4 digital outputs and

- Modbus modules with RS485 and RS232 interfaces.

Measurement principle

Non-dispersive infrared absorption photometers in the λ = 2.5-8 µm wavelength range can measure up to 4 compositions using 1 or 2 beam paths and 1 or 2 receivers per beam path in one gas path or two independent gas paths.

Measure up to 4 components in one gas path or two independent gas paths with 1 or 2 receivers per beam path.

Impact Effects

Flow rate effects

Flow rates in the range of 20-100 liters/hour: within the detection range

Correlated gas effects/cross sensitivity

Analyzer configuration must be aware of sample gas composition.

Selective measures to reduce associated gas effects (optional): Installation of interference filters or filter units, internal electronic cross-sensitivity correction of one sample component by other sample components measured by the gas analyzer.

Temperature effects

Ambient temperature within the permissible range - At zero point: ≤ 2 % of range per 10 °C - At sensitivity without thermostat:

≤ 3 % of the measured value per 10 °C - Sensitivity with thermostat (optional):

Sensitivity with thermostat (optional): ≤ 2 % of measured value per 10 °C

Thermostat temperature = 55 °C

Barometric influences - At zero point: No influence - Sensitivity during pressure correction by means of integral pressure sensor

Per 1 % barometric pressure change: ≤ 0.2 % of measured value

Barometric pressure variation

If a hose is used for the internal gas line, the pressure sensor is located in the sampling gas line.

If a hose is used for the internal gas line, the pressure sensor is routed externally through the hose.

Operating range of the pressure sensor: pabs = 600-1250 hPa

Power supply influences

Voltage and frequency within the permissible range: no effect