7 Description of Instrument Functions Levelflex M FMP40 and FMP45
48 Endress+Hauser
7.5.3 Function "low output limit", HART only
The output of negative level values can be suppressed with this function.
Selection:
• off minimum output -10% (3.8 mA for HART)
• on minimum output 0% (4 mA for HART)
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Caution!
This user input is available for HART devices only!
7.5.4 Function "curr. output mode", HART only
Use this function to specify the current output mode for HART devices.
Selection:
• standard
• curr. turn down
• fixed current
standard
This selection displays the complete measuring range (0...100%) across the full current interval
(4...20 mA).
curr. turn down
This selection only displays a part of the measuring range across the full current interval (4...20 mA).
This range is specified using the "4mA value" and "20mA Value" functions.
fixed current
Selecting this outputs a fixed current. The measured value is only transmitted using the HART sig-
nal. The current output value is set using the "fixed cur. value" function.
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Caution!
This selection is available for HART devices only!