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Text version of the page
2/14
2
Automation 17.04.2008
Single-Channel Safety Barrieres for Transmitter
Series 9001/51
Single-channel safety barrieres for transmitter
05545E02
• Application specific for transmitters
• Grounded field device
• Allows the connection of unregulated power
supplies, UN between + 20 to 35 V DC
• Approved for installation in Division 2 and
Zone 2
Selection Table
UN Safety values Order number
Uo Io Po IIC IIB
Lo Co Lo Co
V V mA mW mH mF mH mF
20 ... 35 28 91 637 2.2 0.083 14 0.65 9001/51-280-091-141
Technical Data
Supply current Is ( 50 mA
Accuracy ± 0.05 %
Temperature effect ± 0.1 % / 10 K
Longterm drift ± 0.05 %
Rated operational current IN = 3.6 mA ... 22 mA
Load RL ( 350 O
Transmitter supply voltage
Functional and Maximum Safety Values
UN Rated operating voltage Po Maximum power
Uo Maximum voltage Lo Maximum permissible
external inductance
Io Maximum current Co Maximum permissible
external capacity
+Ue
-Ue / 0V
+Ue
0V
UN
RL
/ PA
+20 V ... 35 V
Power supply
Safe area Hazardous area
Intrinsically safe
Control room field device
equipment
Umin (IN = 20 mA)
UN - 9.5 V
14 V
UN
( 23.5 V
> 23.5 V