Datexel DAT 5030 IS/B Instruções de instalação, manutenção e utilização - Página 3

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APPLICATION NOTES
The device DAT 5030 IS operates as a power supplier and isolated repeater of 0÷20 and 4÷20mA current loop both active and passive.
The input signal coming from an hazardous area (ZONE 0,1 or 2) is isolated, converted and provided in a safe area as a voltage (up to
10V) or current (up to 20 mA) signal. The model ' DAT 5030 IS /A ' is a single channel repeater; the model 'DAT 5030 IS /B' is a double
channel repeater: it can be used also as signal doubler, connecting in series the inputs of two measure channel.
The models DAT 5030 IS /AH and DAT 5030 IS /BH are able to transfer an HART signal between input and output .
All devices make a galvanic isolation between input and
output; this is necessary when the sensor has not a
right isolation to the ground.
All device are designed for mounting on DIN rail.
In a Intrinsically Safe system it is necessary to verify
that the maximum energy available in the circuit will be
lower than the ignition value of the explosive mixture.
It occurs to verify specifically that:
- The intrinsically safe equipments and the associated
apparatus must be qualified for the employ in the
hazardous zone which them have been connected
(category, type of gas, etc..).
- The values Ui, Ii and Pi of an equipment must be
respectively equal o greater than the maximum values
Uo, Io and Po of equipments which it has been
connected.
- The sum of equipments equivalent capacity (Ci) and
connecting cable capacity (Cc) must be lower than the
admitted capacity (Co) of the equipment which them
have been connected.
- The sum of equipments equivalent inductance (Li) and
connecting cable inductance (Lc) must be lower than
the admitted inductance (Lo) of the equipment which
them have been connected.
Ui > Uo
(Ci) + Cc < Co
Ii > Io
(Li) + Lc < Lo
Pi > Po
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Two wires connection
HAZARDOUS AREA
(ZONE 0, 1 or 2)
Ui
Intrisically Safe
Ii
equipment
Pi
(transmitter)
Ci
Li
Three wires connection
HAZARDOUS AREA
(ZONE 0, 1 or 2)
Intrisically
Ui
Safe
Ii
Pi
equipment
Ci
( transmitter)
Li
Doubler signal connections
HAZARDOUS AREA
(ZONE 0, 1 or 2)
Intrisically
Safe
Ui
Ci
Ii
equipment
Li
Pi
(transmitter)
SAFE AREA
(ex. control room )
DAT 5030 IS
Uo
4
Io
Lc
Po
6
Cc
Co
Lo
SAFE AREA
(ex. control room)
DAT 5030 IS
4
Uo
Lc
Io
6
Po
Cc
Co
5
Lo
SAFE AREA
(ex. control room)
DAT5030 IS /B
Uo
4
Io
Lc
Po
6
Cc
Co
Lo
15
Ci
16
Li
(Simple App.)
SI_ED.010117
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