3 | Assembly
FISCHER Mess- und Regeltechnik GmbH
16/56
BA_EN_DA03_GKT_HLP_ATEX
3.4 Use in areas at risk of explosion
3.4.1 Differential pressure transmitter without contact element
DA03 … 0A
II 2G Ex h IIC T4 Gb
II 2D Ex h IIIC T95°C Db
Explosive areas Zone 1 and 2, and 21 and 22, risk from gases and dry dust.
Allowed temperatures:
• The maximum surface temperature 95 °C was determined under the follow-
ing conditions without dust accumulation and safety factor.
• Allowed ambient temperature: -20°C to +60°C.
• Allowed medium temperature in the differential measurement unit < 85°C.
WARNING
Compression heat
With gaseous mediums, the instrument temperature can increase due to com-
pression heat. In such cases, the pressure change speed must be limited or re-
duced to the allow measuring substance temperature.
NOTICE! For a differential pressure change between 10% and 90% of the
measuring range and a pulse frequency < 0.06 Hz, the temperature in-
crease is <10K.
To avoid additional heating, the instruments may not be exposed to direct sun-
light during operation.
The standards EN60079-0, EN 60079-31, EN ISO 80079-36 and EN ISO
80079-37 apply for the non-electrical part of the devices in terms of explosion
protection. The applicable requirements of these standards are satisfied.
(a) European market (CE):
The documentation for the mechanical part were filed with the notified body
NB 0044 TÜV-Nord-Cert under file number 8000324431.
(b) UK market (UKCA):
The documentation for the mechanical part were filed with the notified body
NB 2812 Element Material Technology under file number 2812-013.
(c) Eurasian Economic Union (EAC):
The unit does not have ATEX approval for this market. It may only be used
there as an industrial unit.
