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gas-lab
Q1
gas-lab
Q1 sensor system (sensor technology):
The sensor system must neither be stored at temperatures below
-20°C nor above +55°C.
Connect the electrical cables only to the EEx-e approved junction box!
This junction box is located on the mounting plate of the
gas-lab
Q1.
The sensor system is supplied by 24 V DC and must be secured
externally by 2.5 A.
Include the housing and mounting plate in the local earthing system.
A temperature b5 deg. C and +40 deg. C must be guaranteed
during the operation of the sensor system (-x to +40 deg. C with
additional heater, -x to +55 deg. C with cooling unit; the lower
temperature limit depends on the heat output).
Only gases of the second gas family according to DIN DVGW 460 or
approved calibration gases are permissible. The oxygen content in the
natural gas must not be higher than 2.0 percent by volume.
The ventilation must be connected to the exhaust gas manifold via a
stainless steel tube with a minimum inside diameter of 4 mm.
After a voltage failure the measuring system automatically purges
with process gas before it activates the sensors. After a new gas
cylinder with flammable contents has been connected, the system
must be purged manually before the normal measurement can be
continued. This also applies if air may have got into a gas pipeline
connected to the sensor system (see also Chapter 5.1.4).
The user must ensure by means of high-pressure reduction and safety
devices that all gases injected into the measuring system do not
exceed an inlet pressure of 1,250 mbars absolute!
The opening of the housing as well as inspection and maintenance
must be carried out by specialists authorised by Elster!