KROHNE CORIMASS G-MFM 4085 EEx EN - Manual (Page 4)

4
1. Description
The mass flowmeter MFM 4085 K E
E x and MFM 4085 F EEx consists of two main components:
The Signal Converter, which calculates and displays the measured values and the transducer
which supplies the converter with the analog signals.
A Cable Seal, which is screwed into the converter housing, leads the electric signals from the
transducer to the converter. The signal cable between the transducer and converter are
intrinsically safe.
The converter housing is permanently screwed onto the transducer and must not be removed
at any time.
Cenelec Approvals
PTB approves the conformity of the mass flow meter acc. to the harmonized European
Standards:
EN50018
(Pressure tight housing ‘d’)
for the electronics housing and the terminal compartment
EN50019 (Increased safety ‘e’)
for the standard termination compartment
EN50020 (Intrinsically Safe ‘ib’”
for the Zener barriers and all electrical circuits inside the transducer
The approval number PTB Ex-94.C. 2054 X, PTB Ex-97.D.2194 X, Ex-97.D.2195 X and the
Addendums covers the meter sizes 10 G, 100 G, 300 G, 800 G, 1500 G and 3000 G.
The meters are identified with the code
E E x de [ib] II C T6...T3 or
E E x de [ib] II C T6...T3
or with intrinsic. safe outputs E E x de [ia/ib] II C T6...T3 or
E E x de [ia/ib] II C T6...T3
Factory Mutual approvals
The G-Series is also approved for use in Div 1 and Div 2 hazardous locations.
The equipment is suitable for use in the following areas:
Class I Div 2 Groups A, B, C and D
Class II Div 2 Groups F and G
Class III Div 2
Class I, II, III Div 1 Groups A, B, C, D, E, F and G
The approvals and the various addendums is applicable to the meter sizes: 10 G, 100 G, 300
G, 800 G,1500 G and 3000 G.