Appendix
Manual ERZ2000-DI · EN1.2 · 2017, December 21st
131
D) Optional Ex input card
D.1
Instructions for the installer
Code:
Type
: EX1-NAMUR-2 / V1 or V2
II(2)G [Ex ia] IIC
TÜV 06 ATEX 553139 X
Tamb = -
20°C …. +60°C
Data: see EC Type approval certificate
Use:
Use of the assembly takes place in combination with the device ERZ2000-DI only. The
assembly is intended for galvanic isolation of MSR signals, such as 20 mA current loops
or adaptation and/or standardization of signals. The different intrinsically safe current
circuits are provided to operate intrinsically safe field devices within explosion-prone ar-
eas. The applicable laws and directives for the use and/or planned use must be ob-
served. Version V1 is the standard version for a 1-rail flow computer, version V2 is de-
signed for a 2-rail flow computer (optional expansion level).
Multiple transmitters/sensors can be connected to the EX1-NAMUR-2 card.
2 volume transmitters, with pulse sensors similar to DIN 19234,
1 electronic meter (ENCO),
1 pressure transducer (4 to 20mA or HART),
1 temperature sensor (4 to 20mA or HART),
optionally 1 temperature sensor (PT100 4-wire).
Installation and commissioning in connection with Ex areas:
Installation and commissioning must be carried out exclusively be specially trained and
qualified personnel. The device is designed with protection rating IP20 in accordance
with EN 60259 and appropriate measures must be taken in unfavorable environmental
conditions that exceed contamination degree 2. External heating due to solar radiation
or other heat sources must be prevented. The installation of intrinsically safe current cir-
cuits must be carried out according to the applicable installation regulations. For con-
nection of intrinsically safe field devices with the intrinsically safe current circuits of the
corresponding devices of the ERZ2000-DI, the highest values of the field device and the
corresponding device must be observed in consideration of explosion protection.
