12 Ultrasound Controller Manual
Short FILTER integrate and high SENSITIVITY is useful when almost every bubble should be
detected.
Select SET RELAY to set how the relays should act. There are four relays each with one normally
open contact (at power off and when sensor is not connected the relay is open). Each relay can
be set independently. Choose between Closed with air or closed with liquid and choose between
Air Sensor 1 and Air Sensor 2. The duration of air being indicated is minimum 0,5 second even if
the bubble is detected much shorter time (to make sure the indication of air is registered).
Select SET mA output to set the assignment of the mA-outputs. There are two outputs: A and B.
They can be assigned to Air Sensor 1 or Air Sensor 2 and Normal Measurement Data or All Sensitivities
Normal Measurement Data Assigns a combination of the analog Ndata during the time liquid is
indicated and 6mA when air is indicated:
8mA – 20mA = Ndata = 0% – 150% during the time Liquid is indicated
6mA = when Air is indicated
4mA = error
All Sensitivities Assigns bubble sizes to mA.
16mA = Liquid (no bubble) 14mA = small bubble
12mA = medium bubble 10mA = big bubble
8mA = very big bubble 6mA = very very big bubble
4mA = error.
The bubble indication time is always minimum 0,5 second.
Air Sensor start-screen
When power is applied, the Air Sensor start-screen is
displayed showing something like this:
On the first line to the right is written AirSens meaning this is Air Sensor-mode. The first digit
to the left indicates Air Sensor 1 and Air Sensor 2. Following the digit is diagnostic information
about each Air Sensor:
--- No Air Sensor is connected and Air Sensor TYPE or DIAMETER is set to no Air Sensor
set Settings are missing
cal Waiting for calibration to be done
CalAir Waiting for calibration of Air to be done
CalLiq Waiting for calibration of Liquid to be done
err 1 Error, no Air Sensor is detected
err 2 Error, NAir too high, see troubleshooting
err 3 Error, VLthld too low, see troubleshooting
err 4 Error, NLiq too low, see troubleshooting
AIR Air or bubble is detected
LIQUID Liquid without bubble is detected.
(LIQUID is blinking if measurement data is higher than 200% suggesting a new calibration may be
advisable)
On the second line to the right is written 1234 which shows the state of each of the four relays. A
light digit on dark signifies a closed relay.
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