1 ABOUT THIS MANUAL
Manual ERZ2000-DI · EN1.2 · 2017, December 21st
16
Danger
x
Only use the ERZ2000-DI in its original condition.
x
When connecting sensors and other devices in explosion-prone areas,
ensure that the appropriate explosion protection is provided for these
components. The specified maximum values in the certificates issued
for these components must be observed.
x
They are intrinsically safe devices for which galvanic isolation must be
provided with connection of these devices.
x
Life-threatening danger due to incorrect earthing. If the device is not
earthed correctly, so that electrostatic charges can trigger the formation
of sparks, there is a risk of explosion.
Note
The ERZ2000-DI system is approved in different variants for custody-
transfer application for gas measurement technology in Germany and
other countries.
The following EU type examination certificates are available for Germany
(see
Appendix Approvals
:
ERZ2004-DI MID Approval / Status flow computer
ERZ2104-DI MessEV / Calorific value flow computer
ERZ2000-DI MessEV / Maximum load display and registering device
The respective applicable approval (approval symbol) is specified on the type plate
(
chapter "2.7.4 Functions" – "Type plate"
). The corresponding seal diagrams can
be found in this manual or the approval (
chapter 1.5.2 Seal
diagram
).
If a pressure or temperature transmitter for the ERZ2004-DI or ERZ2104-DI types
approved in accordance with MID, it must be secured as follows:
−
The main plate is provided with a sealing label.
−
Access to the calibration switch, which is set to "write protect" during normal op-
eration, is secured by connecting the removable cover of the electronic housing
with sealing marks with the stationary parts of the housing.
