Micropilot FMR67
10
V. 1, Rev. 3, 11-04-2017
Hauser
Output
Output signal
HART
Signal coding
FSK 0.5 mA over current signal
Data transmission rate
1
200 Bit/s
Galvanic isolation
Yes
Switch output
For HART devices, the switch output is available as an option. See product structure, feature 20:
"Power Supply, Output", option B: "2-wire; 4-20mA HART, switch output"
Devices with PROFIBUS PA and FOUNDATION Fieldbus always have a switch output.
Switch output
Function
Open collector switching output
Switching behavior
Binary (conductive or non-conductive), switches when the programmable switch
point is reached
Failure mode
non-conductive
Electrical connection
values
U = 16 to 35 V
DC
, I = 0 to 40 mA
Internal resistance
R
I
< 880 Ω
The voltage drop at this internal resistance has to be taken into account on
planning the configuration. For example, the resulting voltage at a connected
relay must be sufficient to switch the relay.
Insulation voltage
floating, Insulation voltage 1
350 V
DC
to power supply aund 500 V
AC
to ground
Switch point
freely programmable, separately for switch-on and switch-off point
Switching delay
freely programmable from 0 to 100 s, separately for switch-on and switch-off
point
Number of switching cycles corresponds to the measuring cycle
Signal source
device variables
• Level linearized
• Distance
• Terminal voltage
• Electronic temperature
• Relative echo amplitude
• Diagnostic values, Advanced diagnostics
Number of switching cycles unlimited
Signal on alarm
Depending on the interface, failure information is displayed as follows:
• Current output (for HART devices)
– Failsafe mode selectable (in accordance with NAMUR Recommendation NE 43):
Minimum alarm: 3.6 mA
Maximum alarm (= factory setting): 22 mA
– Failsafe mode with user-selectable value: 3.59 to 22.5 mA
• Local display
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
• Operating tool via digital communication (HART, PROFIBUS PA, FOUNDATION Fieldbus) or
service interface (CDI)
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
Linearization
The linearization function of the device allows the conversion of the measured value into any unit of
length or volume. Linearization tables for calculating the volume in cylindrical tanks are pre-
programmed. Other linearization tables of up to 32 value pairs can be entered manually or semi-
automatically.
