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FMT230, FMT250
THERMAL MASS FLOWMETER | CI/FMT230/250-EN REV. B
… 3 Use in potentially explosive atmospheres in accordance with FM and CSA
Operating instructions
Protection against electrostatic discharges
DANGER
Risk of explosion!
The painted surface of the device can store electrostatic
charges.
As a result, the housing can form an ignition source due to
electrostatic discharges in the following conditions:
• The device is operated in environments with a relative
humidi
ty of ≤
30 %.
• The painted surface of the device is thereby relatively free
from impurities such as dirt, dust or oil.
• Instructions on avoiding ignition in potentially explosive
environments due to electrostatic discharges in
accordance with PD CLC/TR 60079-32-1 and IEC TS 60079-
32-1 must be complied with!
Instructions on cleaning
The painted surface of the device must be cleaned only using a
moist cloth.
Devices which are approved for use in potentially explosive
atmospheres have an additional warning plate.
1
WARNING!
– Danger due to electrostatic discharge.
Figure 3: Additional warning plate
Repair
Contact the manufacturer for specific flamepath joint details
during repair of flameproof “XP” apparatus.
