Endress+Hauser Levelflex FMP56 - Potential Equalization; Overvoltage Protection; Performance Characteristics; Reference Operating Conditions

Levelflex FMP56, FMP57
18 Endress+Hauser
R [ ]W
[V]U
0
10
12 23
20 30
0
500
A0014078
Feature 20 "Power Supply, Output", Option C "2-wire; 4-20mA HART, 4-20mA"
Outputs Terminal voltage Feature 010 "Approval"
2 12 to 30 V all
Potential equalization
No special measures for potential equalization are required.
If the device is designed for hazardous areas, observe the information in the documentation "Safety
Instructions" (XA, ZD).
Overvoltage protection
If the measuring device is used for level measurement in flammable liquids which requires the use of overvoltage
protection according to DIN EN 60079-14, standard for test procedures 60060-1 (10 kA, pulse 8/20 ms),
overvoltage protection has to be ensured by one of the following measures:
• Integrated overvoltage protection (in preparation);
Product structure: Feature 610 "Accessory mounted", option NA "Overvoltage protection".
• External overvoltage protection, e.g. Endress+Hauser's HAW262Z.
Performance characteristics
Reference operating
conditions
• Temperature = +24 °C (+75 °F) ±5 °C (±9 °F)
• Pressure = 960 mbar abs. (14 psia) ±100 mbar (±1.45 psi)
• Humidity = 60 % ±15 %
• Reflection factor ≥ 0,8 (metal plate for rod and rope probe with min. 1 mm (0.04 in) diameter)
•
Flange for rod or rope probe ³ 300 mm (12 in) diameter
•
Abstand zu Hindernissen ³ 1 m (40 in)
Maximum measured error
Typical data under reference operating conditions: DIN EN 61298-2, percentage values in relation to the span.
Output:
digital analog
1)
Sum of non-linearity,
nonrepeatability and hysteresis
Level measurement:
•
Measuring range up to 15 m (49 ft): ±2 mm (0.08 in)
•
Measuring range >15 m (49 ft): ±10 mm (0.39 in)
±0.02 %
Offset / Zero
±4 mm (0.16 in)
±0.03 %
1) Add error of the analogous value to the digital value.
If the reference conditions are not met, the offset/zero point arising from the mounting situation may be up to
±12 mm (0.47 in) for rope and rod probes. This additional offset/zero point can be compensated for by entering
a correction (parameter "level correction") during commissioning.