Siemens 7ML5670 - Performance and Safety Data; Output Signals and User Interface

Technical data
SITRANS LC300
32 Operating Instructions, 05/2021, A5E47904073-AA
Performance
measurement range
1.66 pF to 3300 pF
minimum span
3.3 pF
accuracy
< 0.5% of actual measurement value
non-linearity and reproducibility
< 0.4% full scale and actual measurement value
temperature stability
max. temperature drift of 0.25% of actual capacitance value
safety
• current signalling according to NAMUR NE 43, signal 3.8 to
20.5, fault ≤ 3.6 or ≥ 21 mA (22 mA)
• probe input ESD protected
• inputs/outputs fully galvanically isolated
• polarity-insensitive current loop
diagnostics
1)
• primary variable (PV) out of measurement limits
• failure in measurement circuit
• memory check sum
• system watch dog
1)
See Fault Values in Menu position 4 (Page 28) for detailed descriptions of Diagnostic
messages.
Outputs
Current loop
continuous signal
4 to 20 mA / 20 to 4 mA
User Interface
Display
local LCD
4–digit (each digit can be 0 to 9 or limited alpha characters)
Rotary Switch
menu position 0
Actual measurement value (in pF)
menu position 1
Lower Range Value (LRV) 0% of scale value and adjustment
menu position 2
Upper Range Value (URV) 100% of scale value and adjustment
menu position 3
Actual mA signal and system fault setting according to NAMUR NE 43
menu position 4
Diagnostic information/Software revision/reset
menu position 5
Damping