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Low-Cost Programmable Transmitters P5310, P5311 with LHP Communication
4. Installation, operation and maintenance
4.1 Installation and commissioning
4.1.1 General
After mounting and correct connection, switch on the power
supply.
During the installation of transmitters in environment with
higher level of interference, protection of transmitters against
interference and induced overvoltage must be ensured.
According to the standard engineering practice, it is
recommended to separate signal and power wires into
separate gutters and use shielded signal cables with twisted
wires. In case of outdoor wires, it is necessary to solve the
overvoltage protection of the transmitter as a part of overall
solution of protecting system from the effects of atmospheric
electricity.
4.1.2 Special conditions for use of intrinsically safe
version (code EI1)
II 1G Ex ia IIC T4-T6 Ga
II 1D Ex ia IIIC T106°C Da
When installed in
explosive environment of
gasses or
vapours
,
the transmitter shall be installed in a metal
case with protection at least IP 20 to avoid electrostatic
charging. Such case may be a metal temperature sensor
head or a suitable metal installation box if it does not contain
aluminium, magnesium, titanium nor zircon. During installation
it is also necessary to respect other safety standards. The
transmitter may be connected on its input and output sides only
to suitable certified associated apparatus or simple apparatus
in the sense of the standard EN 60079-11 with respecting of
the limiting conditions. The transmitter may be installed in an
environment with explosion hazard Zone 0, Zone 1 or Zone
2 only if all the related conditions are fulfilled. The equipment
provides the necessary level of protection during normal
operation and with one or two faults.
When installed in
explosive environment of
dusts
,
the
transmitter shall be installed in a metal case to avoid
electrostatic charging. Such case may be a metal temperature
sensor head or a suitable metal installation box if it does not
contain magnesium nor titanium. During installation it is also
necessary to respect other safety standards. The transmitter
may be connected on its input and output sides only to suitable
certified associated apparatus or simple apparatus in the sense
of the standard EN 60241-11 with respecting of the limiting
conditions. The transmitter may be installed in an environment
with explosion hazard Zone 20, Zone 21 or Zone 22 only if all
the related conditions are fulfilled. The equipment provides the
necessary level of protection during normal operation and with
one or two faults.
Galvanic isolation of input and output electrical circuit is not
faulty free isolation in terms of Intrinsically safety and it should
be taken into account during the safety analysis of the system.
4.1.3 Special conditions for using of a transmitter in
version (code EN2)
II 3G Ex nA IIC T4 Gc
The transmitter shall be installed in a metal case with
outlets and protection at least IP 54 (category 1 acc.
to EN 60529) that meets requirement of mechanical
resistance acc. to the standards EN 60079-0 and EN 60079-
15. Such case may be for example the metal temperature
sensor head with protection IP 54 or a suitable installation.
During installation it is also necessary to respect other safety
standards. Output and supply circuits or the transmitter can
be connected only when no voltage is present! In case the
temperature in place of the cable input is higher than 70 °C,
a suitable cable and bushing shall be used and temperature acc.
to par. 16.6 of the standard EN 60079-0 and must be marked
on the outer side of the case! The transmitter may be installed
in an hazardous areas in Zone 2. The equipment provides the
necessary level of protection during normal operation.
4.1.4 Electrical connection
Version P531x H1x
4w
3w
4w
4w
RTD
TC
PO T
TC
RTD
NAPÁJECÍ
ZDRO J
LHP komunikátor
mA
TEST
R
i
R
L
250 Ohm
15 Ohm
(pro komunikaci)
mA
VÝSTUP
~
POWER
SUPPLY
LHP
Communicator
(for communication)
OUTPUT
