EasyTREK Compact Ultrasonic Level Transmitters
13
P28 - - - a
Echo-loss handling
a
Echo-loss error
indication
Remark
0
Delayed
During echo-loss, display and analogue output will hold last value.
If the echo-loss prevails for 10 sec plus the time period set in
P20
(damping time), the reading on
the display will change to
"
no Echo
"
and the outputs will change according to the
"
Error Indication
Mode
"
preset in
P12
.
1
None
For the time of echo-loss, display and analogue output will hold last value.
2
Advance to full
During echo-loss in case of filling, the reading on the display and analogue output will shift towards
the
"
full
"
tank/silo state with a level elevation rate (filling speed) preset in
P26
3
Immediate
In case of echo-loss, the display will immediately change to “no Echo” and the outputs will change
according to the
"
Error Indication Mode
"
preset in
P12
.
4
No echo-loss indication in
case of empty tank/silo
Echo-loss may occur in completely empty tanks with a spherical bottom due to deflection of the
ultrasonic beam, or in case of silos with an open outlet.
If the echo is lost when the tank/silo is completely empty, the indication will correspond to empty
tank, in all other cases echo-loss indication will function according to the “Delayed”.
FACTORY DEFAULT: 0
P29
Blocking out of object #1
One fix object in the tank/silo that disturb the measurement can be blocked out.
Enter the distance of the object from the transducer. Use the Echo Map to read out the precise distance of disturbing objects.
FACTORY DEFAULT: 0
