2.3 Mounting position and gas flow direction
The BlueEye™ Ex-D has to be mounted upright with gas connectors in horizontal position and with cable
gland perpendicular to the ground (see Figure 1: Connection of the BlueEye™ Ex-D to a gas pipeline).
• Wall mounted, horizontally.
• Gas connector Inlet (6) left, gas connector Outlet (7) right.
• Cable gland pointing to the ground.
Gas flow direction
Figure 6: Gas flow direction and mounting requirements for the BlueEye™ Ex-D
2.4 Best measuring performance
The measurement will be carried out on a small amount of sample gas at low flow rates. For low latency results
install a purge bypass and avoid long gas lines.
The BlueEye™ Ex-D is calibrated for absolute pressure range between 960 and 1100mbar absolute.
To achieve an accurate measurement reading it is necessary to a stable pressure in this absolute pressure
range. Fluctuating deviating pressures will result in temporarily or permanent inaccurate measurements.
2.5 Gas inlet conditions
• Gas condition: Required is dry, filtered gas (with an external particle filtration down to 10 µm).
• Gas dew point: The gas mixture should be below 10 K of the lowest operating temperature.
• Gas pressure range: 960 to 1100 mbar absolute (13.9 to 16 psi absolute)
• Gas temperature range: +/- 2°C (36°F) deviating from environment temperature
Applying a gas pressure above 1500 mbar absolute can result in danger to the life and limb or environmental
and property damage.
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