Liquistation CSF34 Technical data
Endress+Hauser 197
15.2 Output
Output signal • 2 binary outputs (standard) + 2 binary outputs (optional):
Open collector, max. 30 V, 200 mA
• Up to 2 x 0/4 to 20 mA, active, galvanically isolated from the sensor circuits and from
each other
2 to 6 x 0/4 to 20 mA, active, galvanically isolated from the sensor circuits and from
each other
• Of those, 1 x with optional HART communication (only via current output 1:1). Limited
to 2 current outputs with optional fieldbus communication.
Communication • 1 service interface
• Accessible via front panel connection (optional)
• Commubox FXA291 (accessory) required for communication with the PC
Output signal Depending on version:
• 2 x 0/4 to 20 mA, active, galvanically isolated from one another and from the
sensor circuits
• 4 x 0/4 to 20 mA, active, galvanically isolated from one another and from the
sensor circuits
• 6 x 0/4 to 20 mA, active, galvanically isolated from one another and from the
sensor circuits
• 8 x 0/4 to 20 mA, active, galvanically isolated from one another and from the
sensor circuits
• Optional HART communication (only via current output 1:1)
HART
Signal encoding FSK ± 0.5 mA above current signal
Data transmission rate 1200 baud
Galvanic isolation Yes
Load (communication resistor) 250 Ω
PROFIBUS DP/RS485
Signal encoding EIA/TIA-485, PROFIBUS DP-compliant acc. to IEC 61158
Data transmission rate 9.6 kBd, 19.2 kBd, 45.45kBd, 93.75 kBd, 187.5 kBd, 500 kBd,
1.5 MBd, 6 MBd, 12 MBd
Galvanic isolation Yes
Connectors Spring terminal (max. 1.5 mm), bridged internally (T‐function),
optional M12
Bus termination Internal slide switch with LED display
Modbus RS485
Signal encoding EIA/TIA-485
Data transmission rate 2,400, 4,800, 9,600, 19,200, 38,400, 57,600 and 115,200
baud
Galvanic isolation Yes
Connectors Spring terminal (max. 1.5 mm), bridged internally (T‐function),
optional M12
Bus termination Internal slide switch with LED display
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