isolating signal converter
properties:

Isolating signal converter for application in zone 0 or zone 20 (permanent explosion risk)
with integrated transmitter supply.
It allows the direct connection of active 2-wire sensors (4 to 20 mA) and 3-wire sensors in the Ex-area.

  • input intrinsically safe ATEX II (1) GD [EX ia] IIC
  • 2 power-supply-designs with wide range of allowed supply voltage:
    10 to 30 V DC / AC or 85 to 253 V AC
  • electrically isolated between input/output/supply voltage
  • 22.5mm standard housing for rail mounting TS35
  • universal inputs/outputs for (0)4 to 20 mA and 0 (2) to 10 V

                     

ST 500-Ex-ia-10-0 (230V AC)              

ST 500-Ex-ia-10-5 (10 bis 30V DC/AC)   

                                  

specifications:
measuring range:
 (selectable)                		current input: 0 to 20 mA or 4 to 20 mA
(Ri = 25 Ω, max. 100 mA overload)
voltage input: 0 to 10 V or 2 to 10 V
(Ri = ~ 40 kΩ, max. 100 V overload)
span: approx. +20% adjustable
transmitter supply: approx. 20 V DC, Ri = approx. 300 Ω
output signal: 0 to 20 mA, 4 to 20 mA, 0 to 10 V or  2 to 10 V (selectable via DIP switch)
max. load: burden < 1k Ω (at mA), 15 mA (at V)
basic accuracy: <0.3 % of measuring range
temperature coefficient: <0.01 %/K
repeat accuracy: <0.1 % of measuring range
rise time: T90 = < 100ms
power supply: ... to 0 85 to 253V AC/
... to 5 10 to 30V DC/AC
power consumption: max.  3.5 VA
isolation voltage: 500 V AC, according to VDE 0110 Gr. 2
between input/output/supply voltage
test voltage: 4 kV DC between input/output/supply voltage
working temperature: -10°C to +55°C
electrical connection: screw-type terminals with pressure plates, max. 2.5 mm2
dimensions: 22.5 x 75 x 110mm (W x D x H)
protection: IP 30 (case), IP 20 (terminals)
Ex-certification: TUEV 03 ATEX 2283, II (1) GD [EEx ia] IIC
connection data: Uo = 25.2 V, Io = 95 mA, Po = 600 mW,
Co = 107 nF (ia/IIC), 820 nF (ia/IIB),
Lo = 2.3 mH (ia/IIC), 14 mH (ia/IIB),
Ci, Li = negligible
The intrinsically safe mesuring input is reliably electrically isolated from all non-intrinsically safe circuits
up to a peak values of 375 V.

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