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Average Level
Sultan
Acoustic Wave Series
28
What is Average Level?
Average Level (AvgMatrl) is used to measure the
average of two levels using two Transducers and one
amplifier providing one output. The Transducers are
referred to as Sensor 1 and Sensor 2.
Average Material Calculation
The display mode ‘AvgMatrl’ (Average Material) gives
a result calculated as follows:
AvgMatrl = LowLevel – AvgSpace
where
AvgSpace = ( offset)/2
Analog Output
Analog output is calculated based on the average
material level.
The span of the analog output is defined by the
LowLevel and HiLevel parameters. The analog output
is calculated as follows:
Current (mA) = 16* AvgMatrl/ (LowLevel-Hi
Level) + 4mA
Relays
The relays are switched based on the average space
value. The relay set points L1 and L2 should be set
considering the average space values at which the
relay is required to switch.
Setting Sensor ID
You will need to assign one transducer to ID2.
To do this perform the following steps
1. Connect only one of the transducers
2. Enter ‘Quickset’ and change the display mode to
AvgMatrl
3. Scroll down until you see 1:Sen Add 1 option.
4. Press CAL to edit. Select ‘1’ for current transducer
and press CAL again.
The menu then proceeds to Tx Add:,
5. Press CAL to edit, press UP to scroll from 1 to 2
and press CAL to save.
The currently connected transducer is now on ID2
You can now connect the other transducer to the
junction box which will be ID1 to complete the
measurement pair required.
Accessing both Sensors Parameters
Both Sensor 1 and Sensor 2 parameters can be
accessed through the KeyPad.
The parameter ‘
Sensor
’ in ‘
Advanced
’ determines
which sensor (1 or 2) will be currently accessed if
required to adjust settings.
Note: Average level requires a junction box AWRT-JB-01