Endress+Hauser Deltabar FMD72, Руководство по эксплуатации

Страница: 49 / 108

Deltabar FMD72 Commissioning
49
Description
11 Set the volume value for the lower current value (4
mA) using the "Set LRV (166)" parameter (0 l).
Menu path: Setup
®
Extended Setup
®
Current
Output
®
Set LRV
4 See table, step 9.
5 See table, step 11.
6 See table, step 12.
12 Set the volume value for the upper current value (20
mA) using the "Set URV (167)" parameter (1000 l
(264 gal)).
Menu path: Setup
®
Extended Setup
®
Current
Output ® Set URV
13 If the process uses a medium other than that on
which the calibration was based, the new density
must be specified in the "Process Density"
parameter.
Menu path: Setup
®
Extended Setup
®
Current
Output
®
Process Density.
14 Result:
The measuring range is set for 0 to 1000 l (264 gal).
For this level mode, the measured variables %, level, volume and mass are available, see "Unit
before lin. (025)" (
®
ä
81).
11.7.5 "In height" level selection Calibration with reference pressure
(wet calibration)
Example:
In this example, the volume in a tank should be measured in liters. The maximum volume of
1000 liters (264 gal) corresponds to a level of 4.5 m (15 ft). The minimum volume of 0 liters
corresponds to a level of 0.5 m (1.6 ft) since the device is mounted below the start of the level
measuring range. The density of the fluid is 1 g/cm
3
(1 SGU).
Prerequisite:
• The measured variable is in direct proportion to the pressure.
• The tank can be filled and emptied.