Interface; Process Property; Dc Value Lower Medium - Endress+Hauser Levelflex FMP51 Operating Instructions Manual

Operating menu

Process property

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DC value lower medium

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Prerequisite
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154
"Interface" submenu
Navigation  Setup → Advanced setup → Interface
 Setup → Advanced setup → Interface → Process property
Specify typical rate of change for the interface position.
• Fast > 1 m (40 in)/min
• Standard < 1 m (40in) /min
• Medium < 10 cm (4in) /min
• Slow < 1 cm (0.4in) /min
• No filter / test
The device adjusts the signal evaluation filters and the damping of the output signal to the
typical rate of level change defined in this parameter:
Process property
Fast > 1 m (40 in)/min
Standard < 1 m (40in) /min
Medium < 10 cm (4in) /min
Slow < 1 cm (0.4in) /min
No filter / test
 Setup → Advanced setup → Interface → DC lower medium
Operating mode (→  131) = Interface or Interface with capacitance
Specify the dielectric constant ε
1 to 100
For the dielectric constants (DC values) of many media commonly used in industry,
please refer to:
• Dielectric constant (DC value) Compendium CP01076F
• The Endress+Hauser "DC Values app" (available for Android and iOS)
The factory setting, ε
Levelflex FMP51, FMP52, FMP54 PROFIBUS PA
Step response time / s
5
15
40
74
2.2
of the lower medium.
r
= 80, applies for water at 20 °C (68 °F).
r
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