2 Safety instructions
2.6 Safety instructions for electrical work
FLUXUS G831ST-HT
2021-06-01, UMFLUXUS_G831ST-HTV1-0EN
10
2.6
Safety instructions for electrical work
• Prior to any work on the transmitter (e.g., installation, dismounting, connection, service and maintenance), the
transmitter has to be disconnected from the power supply.
• Electrical work may only be carried out if there is enough space.
• Open the transmitter in safe ambient conditions only (e.g., air humidity < 90 %, no conductive pollution, no explosive
atmosphere).
• The degree of protection of the transmitter is only ensured if all cables are tightly fitted using cable glands and the
housing is firmly screwed.
• The condition and tight fit of the electrical connections have to be checked at regular intervals.
• When connecting the transmitter to the power supply, an appropriate equipment switch according to IEC 60947-1 and
IEC 60947-3 has to be installed as disconnecting device. The equipment switch has to disconnect all live wires. The
ground conductor connection must not be interrupted. The equipment switch has to be easily accessible and clearly
marked as a disconnecting device for the transmitter. It should be located near the transmitter. If the transmitter is used
in an explosive atmosphere, the equipment switch has to be installed outside the explosive atmosphere. If this is not
possible, it has to be installed in the least hazardous area.
• The connection may only be made to networks up to overvoltage category II. When connecting the inputs and outputs as
well as the power supply, observe the installation instructions, in particular the terminal assignment.
• The module must not be removed from the housing. The transmitter does not contain any components to be maintained
by the user. For repair and service work, please contact FLEXIM.
• Observe the safety and accident prevention regulations for electrical systems and equipment.
Fig. 2.1:
Transmitter
ENTER
CH B
CH A
BRK
CLR
Ulrasonic Flowmeter
module
