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Text version of the page
2/3
2
Automation 17.04.2008
Dual-Channel Safety Barriers
Series 9002
Overview
Version Description Type Page
Dual channel barrier Allows the connection of regulated power supplies, Un 9002/11 49
Application specific for the connection of 3-wire NPN, voltage output sensors
Low operational current
9002/11 50
Application specific for 4/20 mA transmitters with a 1-5 V input in the control room
Design includes high tolerance 250 Ω resistor
9002/11 51
Allows the connection of regulated power supplies, UN 9002/00 52
Application specific for use with strain gauge load cells
One positive polarity channel and one negative polarity channel in one unit
9002/10 53
Application specific for the connection of RTDs
High resistance tolerance in each channel, 20 O ± 0.1
Low temperature coefficient < 50 ppm/K
Allows the connection of regulated power supplies, UN
9002/22 54
Allows the connection of regulated power supplies, UN 9002/22 55
Diode return barrier for supply and return signals in one unit with
very small entity current (Io) addition from the second channel
Allows the connection of unregulated power
supplies, Un, to channel 1
Operational current limited to 35 mA
9002/13 56
Diode return barrier for supply and return signals in one unit with
very small entity current (Io) addition from the second channel
Allows the connection of regulated power supplies, UN
9002/13 57
Diode return barrier for supply and return signals in one unit with
very small entity current (Io) addition from the second channel
Operational current limited to 40 mA at 250 O load
Allows the connection of unregulated power supplies, Un, to channel 1
9002/13 58
Diode return barrier for DC current return signals with
very small entity current (Io) addition
Suitable for dry contact and floating 4/20 mA signal returns
Both channels are positive polarity.
9002/33 59
Diode return barrier for DC current return signals with
very small entity current (Io) addition
Application specific for passive 4/20 mA signals (from 4-wire transmitters)
with isolated analog input at the control system
One positive polarity channel and one negative polarity channel
9002/34 60
Allows the connection of a voltage, UN
Suitable for voltage signals
9002/77 61