Aplisens SGE-25S.Modbus Panduan Pengguna - Halaman 18
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Halaman CetakEN.IO.SGE.25.MODBUS
EN.IX.SGE.25.MODBUS
Explosion-proof Device Manual EN.IX.SGE.25.MODBUS
1. Introduction
Explosion-proof Device Manual EN.IX.SGE.25.MODBUS only applies to probes SGE-25.Modbus,
SGE–25S.Modbus, SGE–25C.Modbus in intrinsically safe version acc. to ATEX marked as in point 2
and the Ex information in the Product Certificate. During installation and use of Ex probes it is necessary
to
use
User's
Manual
EN.IX.SGE.25.MODBUS".
2. Using probes in hazardous area.
The probes are produced in accordance with the requirements of the following standards:
EN 60079-0:2018-09, EN 60079-11:2012, EN 50303:2004
The probes may operate in areas where there is a risk of explosion, in accordance with the rating of the
explosion protection design:
I M1 Ex ia I Ma
II 1G Ex ia IIB T4/T5/T6 Ga
FTZÚ 18 ATEX 0077X
3. Permissible input parameters (based on data from the FTZÚ 18 ATEX 0077X)
For the connection of the power supply line and the RS485 data transmission signal line, use
devices that have the relevant intrinsic safety certificates, whose parameters must not exceed
the permissible input-output parameters given in points a) and b).
The probes should be powered from devices with galvanically separated power supply.
Minimum probe supply voltage 4 V DC.
The probe is an intrinsically safe device with protection level "ia" when the power supply circuit
has protection level "ia"
a) Permissible input parameters for power supply (red "+", black "-")
- for power supply with linear characteristics:
- for power supply with rectangular and trapezoidal characteristics:
b) Permissible input and output parameters for RS485 transmission (blue VA, yellow VB):
* the output parameters of the probes Uo, Io are equal to the output parameters Uo, Io of the power supply used.
Dependence of temperature class of probes on ambient temperature (including temperature of
measured medium) Ta [°C] and sum of power Pi [W] in power supply circuit and in RS485 transmission
circuit is given in Table Z1.
Min. ambient temperature Ta = -40°C (special version from -50°C).
c) The internal capacitance and inductance of the probe in the power supply circuit and in the RS485
transmission circuit is:
d) The maximum capacitance and inductance that can be connected to the probe in the transmission
circuit is for the subgroup:
- IIC Lo= 0.2 mH, Co = 0.5 µF;
- IIB Lo= 0.7 mH, Co = 15 µF;
- IIA and group I Lo= 1.7 mH, Co = 80 µF.
** Consider the cable capacitance and inductance, which for a permanently connected cable are:
18
LEVEL PROBES:
SGE-25.Modbus, SGE-25C.Modbus, SGE-25S.Modbus
INTRINSICALLY SAFE acc. to ATEX
EN.IO.SGE.25.MODBUS
Ui ≤ 10 V, Ii ≤ 0.4 A,
Ui ≤ 5 V, Ii ≤ 0.4 A
Ui ≤ 10 V, Ii ≤ 0.2 A, Uo ≤ 10V*, Io ≤ 0.4 A*
Li= 0 µH, Ci≈ 2.5 µF **
Ck = 0,2 nF/m i Lk = 1 µH/m
„Explosion-proof
with
Device
Manual
Revision 01.A.001/2021.09