36 Ultrasound Controller Manual
10. Gel Sensor Mode
Gel Sensor Mode measures the presence and concentration of gel media. The Gel Sensor GF90
or Level Switch KS can be used as sensors. Up to four sensors can be connected to one
Ultrasound Controller.
Quick start guide
• Install sel sensors (Level Switches) according to instructions in the Level Switch Manual.
• Connect cables, see Connecting the Gel Sensor.
• Switch on external power supply. You may have to press POWER to activate D128.
• You may read about navigating the menu system, page 9
• If display show: SET sensor MODE. You must choose gel sensor mode by scrolling with MENU
until display show Press SELECT for Gel Sensor mode then press SELECT.
• Go to SETTINGS see page 39 and set all parameter that need to be set.
• Calibrate gel sensors with liquid. Make sure there is liquid and not gel at the gel sensors.
Select Calibrate Liquid 1- 4 together and press SELECT button one second.
• Go to SHOW DATA to check values, page 40
• Ready to use.
Connecting the Gel Sensor
GF90 can be connected only
to G72, GP72 or G128. Level
Switch KS or Level Switch
QS can be used as gel
sensor and can be connected
to D72, DP72 or D128.
The Level Switch cable is
better not to be extended.
Maximum cable length, see
Level Switch manual. The
unshielded part of the cable
should be no longer than
40mm. The shield shall if
possible also be connected to
ground via shielded cable
glands. To minimize the risk
of electric interference and
noise, especially in ex-
installation, see Electric
Noise page 10.
If D72 or G72 is mounted
inside a metal cabinet it can be good to connect D72, DP72, G72,
GP72 to the cabinet (ground) and this is best done using shielded
cable glands for the sensor cables. If shielded cable glands are
not used then terminal 16 on the D72, DP72, G72, GP72 or
terminal 19 on D128, G128 can be connected to the cabinet
ground instead.
The cable from the Gel Sensor is better connected directly to the Ultrasound Controller rather than
being extended. The unshielded part of the cable should be rather short, something like 40mm. To
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