Endress+Hauser ria45 - Configuring Universal Inputs

Commissioning RIA45
24 Endress+Hauser
‘Setup’ menu item
Setup → Application → ‘Diff pressure’
Preconfigured by application package Submenu
Setup analog inputs
Signal: Current
Range: 4-20 mA
→  22 and →  24
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)
Setup display
Display: calculated value and bar graph for Calc
Value 2:
Active; all other values inactive
→  31
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
CV Factor 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 calculation of the volume:
Calc value 1: Difference
Calc value 2: Lineariz. CV1
→  25
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
7.4.2 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).
(‘Current’), voltage (‘Voltage’), resistance thermometer (‘RTD’) or thermocouples (‘TC’).
The input is monitored for a cable open circuit (see "Measuring range limits" table
→  36 and "Troubleshooting" section →  40).
Minimum/maximum values at the inputs:
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.
Limit values and relays are available for monitoring the measured values. They should
be configured as described in Step 5 →  26.
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.
Setup
Analog in 1
Analog in 2