6
2 For your safety
FIBERTRAC 31 • Profibus PA
43833-EN-170126
2.5 EU conformity
The device fulfils the legal requirements of the applicable EU guide
-
lines. By affixing the CE marking, we confirm the conformity of the
instrument with these guidelines.
You can find the EU conformity declaration on our website under
www.vega.com/downloads
.
Electromagnetic compatibility
Instruments in four-wire or Ex-d-ia version are designed for use in an
industrial environment. Nevertheless, electromagnetic interference
from electrical conductors and radiated emissions must be taken into
account, as is usual with class A instruments according to EN 61326-
1. If the instrument is used in a different environment, the electromag
-
netic compatibility to other instruments must be ensured by suitable
measures.
2.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany. The published NAMUR recommendations are
accepted as the standard in field instrumentation.
The device fulfils the requirements of the following NAMUR recom
-
mendations:
•
NE 21 – Electromagnetic compatibility of equipment
•
NE 43 – Signal level for fault information from measuring transduc
-
ers
•
NE 53 – Compatibility of field devices and display/adjustment
components
•
NE 107 - Self-monitoring and diagnosis of field devices
For further information see www.namur.de
.
2.7 Security concept, Bluetooth operation
Sensor adjustment via Bluetooth is based on a multi-stage security
concept.
Authentication
When starting Bluetooth communication, an authentication is carried
out between sensor and adjustment device by means of the sensor
PIN. The sensor PIN is part of the respective sensor and must be
entered in the adjustment device (smartphone/tablet). To increase
adjustment convenience, this PIN is stored in the adjustment device.
This process is secured via an algorithm acc. to standard SHA 256.
Protection against incorrect entries
In case of multiple incorrect PIN entries in the adjustment device,
further entries are possible only after a certain amount of time has
passed.
Encrypted Bluetooth communication
The sensor PIN as well as the sensor data are transmitted encrypted
between sensor and adjustment device according to Bluetooth
standard 4.0.