Endress+Hauser RMA42, Operating Instructions Manual

Page: 22 / 64

Commissioning RMA42
22 Hauser
‘Setup’ menu item
6.4.2 Step 2: Configuring the universal input(s) (‘AnalogIn 1/2’)
The device has one universal input, and optionally another universal input for current (‘ Current ’),
voltage (‘ Voltage ’), resistance thermometer (‘ RTD ’) or thermocouples (‘ TC ’).
The input is monitored for a cable open circuit (see "Measuring range limits" table (
→
ä
34) and
"Troubleshooting" section (
→
ä
37)).
Minimum/maximum values at the inputs:
Each universal input saves the smallest and biggest measured value measured. These values can be
reset individually for every channel. In the setup, the administrator can decide whether a user can
reset the minimum and maximum values of the individual channels directly in the main menu
without the need for a release code. It is reset in the event of a Reset and if the scaling of the channel
is changed.
!
Note!
The current min./max. value is saved every 15 minutes. If the power supply is disconnected (mains
off/mains on), a gap in the recording may result. The measuring interval starts when the device is
switched on. It is not possible to synchronize the measuring cycles to full hours.
Setup
É
Application
É
‘ Diff pressure ’
Preconfigured by application
package Submenu
Setup analog inputs
É
Signal: ‘ Current ’
É
Range: ‘ 4-20 mA ’
(
→
ä
20 Step 1 and 2)
‘ AI1 Lower range ’: start of measuring range, analog input 1 (corresponds to 4 mA
for example)
‘ AI1 Upper range ’: end of measuring range, analog input 1 (corresponds to 20 mA
for example)
‘ AI2 Lower range ’: start of measuring range, analog input 2 (corresponds to 4 mA
for example)
‘ AI2 Upper range ’: end of measuring range, analog input 2 (corresponds to 20 mA
for example)
É
CV Factor Factor for the regard of the density of the medium at level measurement, i.e. it
equates the formula 1/(density*gravitational acceleration); Standard value: 1
Setup display
É
Display: calculated value
and bar graph for Calc Value
2:
Active; all other values
inactive
(
→ ä
20 Step 7)
‘ CV Unit ’: unit of the calculated volume value (e.g.liters)
‘ CV Bar 0% ’: start of measuring range for bar graph display
‘ CV Bar 100% ’: end of measuring range for bar graph display
Setup calculation of the
volume:
É
‘ Calc value 1 ’:
‘ Difference ’
É
‘ Calc value 2 ’: ‘ Lineariz.
CV1 ’
(
→ ä
20 Step 3)
Create the linearization table:
If the volume value should be calculated - i.e. a linearization of the difference is
output - the X and Y coordinates have to be specified as the basis for performing the
calculation.
‘ No lin points ’: number of linearization points required (max. 32)
‘ X-value ’: X-coordinate for linearization point X1, 2, ...
‘ Y-value ’: Y-coordinate for linearization point X1, 2, ...
End differential pressure setup