Nivus NivuFlow 750, Instruction Manual

Page: 18 / 162

Instruction Manual
NivuFlow Mobile 750
page 18 NFM 750 - rev. 03 / 27.05.2020
8 Ex Protection
The portable transmitter NivuFlow Mobile 750 and the accompanying sensors are designed
to be used in areas with explosive atmospheres (zone 1).
The following conditions must be observed:
•
Programming the unit under Ex conditions is permissible:

with the programming person within the Ex area as soon as the indicator and
operating unit used has an Ex approval

with the programming person outside of the Ex area as soon as the indicator
and operating unit used has no Ex approval
•
Maintenance and repairs shall be executed only outside of Ex area
•
Rechargeable batteries shall be removed/inserted and charged only outside of
Ex areas
•
In general, only rechargeable batteries approved by NIVUS shall be used within
Ex areas
•
Use the USB interface only outside of Ex areas
•
Replace the SIM card only outside of Ex areas
•
The instrument shall be (after successful installation at the measurement place) se-
cured against unauthorised opening by using a padlock (holes on the side of the enclo-
sure)
Approval
Transmitter II 2G Ex eb ib [ib] mb IIB T4 Gb (TÜV 17 ATEX 196722 X)
Sensors II 2G Ex ib IIB T4 Gb (TÜV 12 ATEX 087812)
Validity of Ex Approval
The Ex approval is only valid in connection with the respective indication on the transmitter
or the sensor nameplate.
Declarations of Conformity and Test Reports
For installation and commissioning the EC Declarations of Conformity and Test Reports of
the respective authorities shall be strictly followed.
Ex Approval for Sensors
The Ex approval for the sensors is part of the Technical Description for Cross Correlation
and Doppler Sensors.