VEGA VEGATROL 20 Ex - Manual (Page 3)

VEGATROL 20 Ex 3
1 Introduction
1 Introduction
1.1 Contents of the instruction manual
This Technical Information / Operating Instructions
(T.I.B.) contains information for correct
-
installation
- connection
- set-up
for the fail-safe-protectionVEGATROL 20 Ex .
This TIB is supplied as part of the order. Knowledge of the
contents is important for correct operation of the
instrument. This TIB accompanies the product and is
addressed to technical staff which are trained or have
knowledge of the use of level measurement and control
equipment.
1.2 Safety information
The instrument must only be operated as described in this
TIB. Please note that other action can cause damage for
which VEGA does not take liability.
1.3 Approvals
Ex-Zone 1
The system sensor of VEGATROL 20 is approved for the
use in hazardous areas zone 1. In such cases the
regulations and special conditions of the conformity
certificate PTB-no. Ex-94.C.4035 X and BVS-no.
93.C.2015 X must be observed.
If the capacitive measuring electrode of the system sensor
is used as part of a continuous level measurement or level
detection, the oscillator of the measuring electrode must
be supplied via a suitable intrinsically safe circuit of a
separate signal conditioning instrument.
These are the following possibilities:
-
signal conditioning instrument VEGAMET in Ex-version
- signal conditioning instrument VEGAMET or evaluation
system VEGALOG with safety barrier
- signal conditioning instrument VEGATOR in Ex-version
- signal conditioning instrument VEGATOR with safety
barrier.
The regulations and special conditions of the conformity
certificates of the signal conditioning instruments or the
safety barrier must furthermore be observed.
Possible combinations of measuring systems are stated
on page 6.
VdTÜV
VEGATROL 20 is approved acc. to VdTÜV-information
"Overfill protection" 100 as overfill protection in stationary
storage vessels in liquid gas plants of groups A, B, C and
D (approval no. TÜV.ÜS.94-35).
This approval is also valid for storage vessels in
distribution plants.
DIN
The overfill protection of VEGATROL 20 corresponds to
the requirements of DIN V 19250, class 5.
TRB
VEGATROL 20 corresponds to the requirements on
component tested overfill protections acc. to TRB 801,
no. 25.
Overfill protection in vessels up from group C
Also in cases where TRB 801, no. 25, item 6.1.4.2
requires two independent overfill protections, one
VEGATROL 20 is sufficient to meet with this requirement.