6.1 Basic calibration for tanks
After resetting the Micropilot to the factory settings (only required during commissioning),
enter the following parameters:
•
empty distance E, full distance F and application parameter A.
The datum point for the empty distance "E" is always the lower face of the process
connection. The full distance "F" may extend only as far as the antenna tip. The calibration
units are metres or feet, settable in V8H5 (0 = m, 1 = ft).
The user has a choice of four application parameters, see also Chapter 7.
Calibration
# VH Entry Significance
➤ Simulation
1 V9H5 333
VH
Reset
➤ Basic calibration
2 V0H1 E m/ft
H
Empty distance
3 V0H2 F m/ft
VH
Full distance
4 V0H3 A
VH
Application
parameter
0: up to 4 m
1: up to 1.5 m
2: up to 4 m, εr < 4
3: up to 20 m
5 V0H0
V0H9
Current level in %
or m/ft
False echo suppression
•
With the tank empty, check whether
distance displayed in V0H8
corresponds to the distance to the
product surface "D".
# VH Entry Significance
1 Empty vessel as far as possible
➤ Basic calibration
2 V0H8 ****
VH
Check value
3 Values correspond?
Echo is level echo➝ procedure A
Suppression up to echo
Values do not correspond?
Echo is false echo ➝ Procedure B
Suppression inclusive echo
Code Application Significance
0 Tank up to 74 m high For slow changes in level (factory setting)
1 Tank up to 1.5 m high For small tanks with rapid changes in level
2 Tank up to 7 m high, ε
r
< 10 For Product Class B, see page 7
3 Tank from 7 m to 20 m high For high storage tanks
F
E
100%
20mA
0%
4mA
BA171014
V0H8
D
BA171Y37
false echo
level echo
Chapter 6 Calibration with Display/Remote Operation Micropilot FMR 231
24 Endress+Hauser
To Next Page
Loading...
