User's Manual
Table Of Contents
- Table of contents
- Important document information
- Terms and abbreviations
- Registered trademarks
- Product life cycle
- Measuring principle
- Input
- Output
- Electrical connection
- Performance characteristics
- Installation
- Environment
- Process
- Mechanical construction
- Operability
- Certificates and approvals
- Ordering information
- Accessories
- Supplementary documentation
Micropilot FMR20
10 V. 5, Rev. 3, 20-12-2016 Endress+Hauser
Electrical connection
Cable assignment
-
+
1
2
A0028954
2 Cable assignment
1 Plus, brown wire
2 Minus, blue wire
Supply voltage
An external power supply is necessary.
Terminal voltage U at device Maximum load R, depending on supply voltage U
0
of power supply
unit
10.5 to 30 V
DC
2-wire
R [ ]W
U
0
[V]
10
10.5 21.75
20 30
0
500
A0029226
Potential equalization
No special measures for potential equalization are required.
In the case of a device for the hazardous area, please comply with the safety instructions in the
separate "Safety Instructions" (XA, ZD) document.
Various power supply units can be ordered from Endress+Hauser: see "Accessories" section
→ 51
Battery operation
The sensor's Bluetooth® wireless technology communication can be disabled to increase the
operating life of the battery.
Power consumption
Maximum input power: 675 mW
Current consumption
• maximum input current: <25 mA
• Maximum start-up current: 3.6 mA
Starting time
First stable measured value after 20 s (with supply voltage = 24 V
DC
)