KROHNE UFM 3030 EEx EN - Manual (Page 6)

6 UFM 3030
1 System Components
1.1 General information
The UFM 3030 ultrasonic flowmeters in compact and separate design are in accordance with the
European Directive 94/9 EC (ATEX 100a) and approved for hazardous classified locations of Zone
1 and 2 by the PTB conform to the European Standards of the EN 500xx series, approval number:
PTB 03 ATEX 2021 X.
1.2 Compact flowmeter
The standard UFM 3030 K-EEx compact flowmeter is designed for ambient temperatures (i.e. Ta)
in the range of -40°C up to +65°C. The MODIS version of type UFM 3030 K/i-EEx with intrinsically
safe signal in-/outputs is suitable for ambient temperatures in the range from -20°C up to +65°C.
The maximum allowed process liquid (medium) temperature is restricted by the combustible
atmosphere that (possibly) surrounds the apparatus, determined by the temperature class of the
atmosphere, see table below.
Maximum process liquid temperature at Temperature class
Ta ≤ 40°C Ta ≤ 50°C Ta ≤ 60°C Ta ≤ 65°C
T6 80°C 80°C 80°C 80°C
T5 95°C 95°C 95°C 95°C
T4 130°C 130°C 125°C 100°C
T3 180°C 165°C 125°C 100°C
The UFM 3030 K/…-EEx compact flowmeter consists of the UFC 030…-EEx flow converter that is
screwed on top of the UFS 3000-EEx flow sensor by four hexagonal socket head cap screws of
size M6. The standard (i.e. non-MODIS) compact flowmeter is marked with one of the codes
below:
Default:
•
II 2G EEx de [ib] IIC T6…T3 for the terminal compartment of the flow converter housing in type
of protection increased safety "e" according to EN 50019.
Optional (only if explicitly ordered!):
•
II 2G EEx d [ib] IIC T6…T3 for the terminal compartment of the flow converter housing
designed as flameproof enclosure "d" according to EN 50018.
The MODIS version of the compact flowmeter, i.e. UFM 3030 K/i-EEx, is marked with one of the
following codes:
Default MODIS:
•
II 2G EEx de [ia/ib] IIC T6…T3 for the terminal compartment of the flow converter housing in
type of protection increased safety "e" according to EN 50019.
Optional MODIS (only if explicitly ordered!):
•
II 2G EEx d [ia/ib] IIC T6…T3 for the terminal compartment of the flow converter housing
designed as flameproof enclosure "d" according to EN 50018.
For service purposes the electronics unit of the two beam ultrasonic converter
UFC 500…-EEx unit can be replaced by the new UFC 030…-EEx electronics unit.