Setup Procedure
ORCA Sonar System
21
App Type2
App Type is the second output and should be considered the secondary measurement. This output is sampled and
updated at programmed intervals
• Bed (dense/heavy blanket layer).
• RAS (return activated sludge)
• Floc (Flocculent/hindered settling layer).
• Clarity (indication of signal lost due to liquid conditions, 0% poor conditions, 100% clean conditions)
Parameter Description Options
App Type2 Set display readout for secondary measurement Off Bed Ras
Floc Clarity**
Density Select interface to be measured See Interface Table below
Calibrat
• Manually fine tune sensor sensitivity
• Press CAL to fire a test pulse which will
return the depth measurement.
Higher value for lighter densities, lower value
for heavier densities.
Lo Level2 Set Lo Level measurement point (4mA) Adjustable
Hi Level2 Set Lo Level measurement point (20mA) Adjustable
SmplRate
Set the time between measurement samples taken
for the App Type2
Adjustable (minutes)
Damping2 Adjust 2nd output response time / smoothness
Value in pulses, approximately 2 pulse per
second
Density
Selected (g/l)
Typical Applications
0.1 - 0.6 Lighter layers
0.6 - 1.2 Hindered Layer Settling Layer
1.2 - 3.0 RAS
3.0 - 6.0 RAS Bed
6.0 - 10.0 Bed
10+ Bed / Heavy Sludge
Inter face Table
** See 'Clarity' for important information
Clarity
Clarity is a representation of how clear the liquid is
between the interface measured by App Type (output 1)
and the transducer face.
The unit monitors the number and quality of return
echoes and uses an algorithm to convert this to a
percentage. The percentage is a rolling average of
approximately 5 minutes of measurement.
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