Siemens SITRANS F FST030 Operating Instructions Manual page 118

Technical data
10.4 Outputs
Description
Cable
Voltage range
Table 10- 8 Current output (Channels 2 to 4)
Description
Signal range
Resolution
Load
Time constant (adjustable)
Fault current
Measurement range (mA)
Lower fault current (mA)
Upper fault current (mA)
Customized fail-safe mode
Galvanic isolation
Cable
Voltage range
Table 10- 9 Digital output
Description
Pulse
Resolution
Frequency
Resolution
Load
Time constant (adjustable)
Active
116
Channel 1
Standard industrial signal cable with up to 3 twisted pairs with overall screen can be con-
nected between the transmitter and the control system. Individual pair or overall screen is
optional depending on user requirements.
Max. 24 V DC (active)
14 to 30 V DC (passive)
Channels 2 to 4
0/4 to 20 mA
0.4 μA
Ex i: <470 Ω
•
Non-Ex: <770 Ω
•
0.0 to 100 s
4-20 NAMUR 4-20 US
3.8 - 20.5 4.0 - 20.8
3.5 3.75
22.6 22.6
Last valid value
•
– Lower fault current
– Upper fault current
Fail-safe value
•
Current value
•
All inputs and outputs are galvanically isolated PELV circuits with 60 V DC isolation from
each other and ground.
Maximum test voltage: 500 V AC
Standard industrial signal cable with up to 3 twisted pairs with overall screen can be con-
nected between the transmitter and the control system. Individual pair or overall screen is
optional depending on user requirements.
Max. 24 V DC (active)
14 to 30 V DC (passive)
Channels 2 to 4
41.6 µs to 5 s pulse duration
1 μs
0 to 10 kHz, 50 % duty cycle, 120 % overscale provision
0.2 Hz
< 750 Ω
0 to 100 s
0 to 24 V DC, 87 mA, short-circuit-protected
4-20 NAMUR 4-20 US
4.0 - 20.5 4.0 - 24.0
2.0 2.0
22.0 25.0
SITRANS F Ultrasonic flowmeters FST030 (HART)
Operating Instructions, 08/2017, A5E35971532-AC
0-20 NAMUR 0-20 US
0.0 - 20.5 0.0 - 24.0
0.0 0.0
22.0 25.0