The GasLab Q2 is a gas quality analyser for natural gases. It determines the calorific value and
Wobbe index and other parameters of the sample gas. The applications of the device range from
fiscal energy metering to measurement, control and regulation. One major application is control
of gas turbine power plants to optimize efficiency, pollutant emissions and system load even with
fluctuating gas qualities. Another application is gas blending for managing the gas specifications
in transportation, distribution and utilisation.
The device is flame free, works quickly and continuously. The correlative measuring procedure
of the GasLab Q2 is based on the determination of the infrared absorption and thermal conductivity
of the sample gas.
The housing provides explosion protection for use in hazardous area and covers a wide ambient
temperature range, so that usually no further protective housing is required. This allows the
analyser to be placed near to the process for the fast response time.
In measurement mode, the sample gas flows continuously through the sensor and updates the
measurements each second. To accelerate the sampling, a bypass flowmeter is integrated in the
housing. The device has a programmable automatic calibration sequence, using methane.
Other utilities such as carrier gas or complex calibration gas mixtures are not necessary for
The analyser has gas connections for sample gas, calibration gas, sensor vent and optional bypass.
There are electrical connections for power and multiple communications, like Ethernet, serial
ports and analog and digital I/O.
The measured values are communicated via Modbus protocol and analog outputs. Modbus is available
through two serial ports and the Ethernet interface. Additionally it is possible to connect
external alarms to monitor contact closures, e.g. low pressure limit of calibration bottle or
sampling system status.
The integrated display shows the measurement values and operating conditions of the analyser.
The analyser can be operated via a touch panel. The same functionality can be accomplished by
a web browser connecting to the device. Computer software is used for configuration, data display
The GasLab Q2 stands out on account of the low capital investment and maintenance costs and its