RMG ERZ2000-NG, Operating Manual

Page: 134 / 454

3 Electrical connections
Manual ERZ 2000-NG · EN07 · 2019, May 13th
124
Caution
External Ex protection (Ex-d): Terminal X4, EI01 value = 1, EI31 value = 0
Caution
Internal Ex protection (Ex-i): Terminal X10, EI01 value = 0, EI31 value = 1
Note
F1, F2, F3 and F4 are combined with a pulse counter function for frequency in-
puts and thus suitable for volume measurement. The standard pre-assignment:
F1 for the measuring channel and
F2 for the comparison channel.
Frequencies F5, F6, F7 and F8 are assigned for density (F5), standard density
(F6) and velocity of sound (F8).
Note
This frequency measurement has a different time basis and is capable of more
precise frequency measurement and higher resolution. With activation of the
frequency inputs, bear in mind that the frequencies 1 to 4 (volume) must al-
ways be included.
Example:
Flow computer with HF 2 and 3, density and standard density
7 frequency inputs must be activated:
o
1 to 4 for volume
o
5 for density
o
6 and 7 for standard density