
OPERATING INSTRUCTIONS
TURBIDITY LIMIT-VALUE EVALUATION UNIT TURBISWITCH GS4
WITH MEASURING SENSOR OR IMMERSION PROBE
BAMO IER GmbH Pirnaer Str. 24D-68309 Mannheim, Germany
Phone: +49 (0)621 84224-0 Fax: +49 (0)621 84224-90, e-mail: info@bamo.de Internet: www.bamo.de
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Initial Start-Up, Adjusting the Switching Point:
Adjustment takes place after installation and electrical connection.
Set to smallest possible values in the hysteresis and time delay menus (1% and 1 s).
Wait 15 seconds until menu level 0 is displayed.
Turn the rotary knob clockwise to 100% in the high range.
The blue LED does not light up.
Fill the measuring sensor with liquid or submerge the immersion fitting.
Slowly turn the rotary knob anticlockwise towards 0% until the blue LED lights up (current turbidity value).
If the switching point is below 10% in the high range, continue turning anticlockwise into the medium range in
order to allow for more accurate adjustment.
If the switching point is below 10% in the medium range, continue turning anticlockwise into the low range in
order to allow for more accurate adjustment.
Then adjust down a few more percentage steps from the current switching point.
The closer the value is to the switching point, the more sensitively the device reacts to increasing turbidity.
If a larger change is desired, the value must be set correspondingly higher (empirical value).
In order to prevent erroneous switching due to air bubbles or isolated turbidity particles, the switching
command can be delayed by adjusting delay time (TD) to a value of up to 9.9 seconds.
A fluttering switching point can be avoided by increasing reset hysteresis (HY).
Troubleshooting during Initial Start-Up
Error Cause Remedy
Blue LED does not go
out. Turbidity in the measuring section is
greater than the sensing range. Inspect the measuring section and remove
obstacles or clean the lenses.
“TT” appears at the
display. Emitter error, emitter not connected,
emitter not visible to the receiver
Check emitter connection, inspect the
measuring section and remove obstacles
or clean the lenses.
“TR” appears at the
display. Receiver error or receiver not connected Check receiver connection.
“CR” appears at the
display. Memory error Reset to factory setting
Incorrect
switching point
Deposits on lenses Clean the lenses.
Fill-level too low Fill up the measuring sensor.
Incorrect turbidity range has been
selected Change the turbidity range.
blue LED onetimes go
on and never go out hysteresis-value to big
limit-value to small change to a smaller hysteresis-value
change to a bigger limit-value
Maintenance:
Measuring sensor:
If contaminated, the lenses have to be cleaned. A suction cup is included with the TURBISWITCH GA5 and GA11
measuring sensors to this end.
Armature Glass Compression piece
Emitter / Receiver
O-Ring
The side with the dot has an anti-contamination coating. Install this end towards the medium!
Fully drain the measuring sensor before performing any maintenance or cleaning work!!!
Do not use any hard objects for cleaning.
Calcium deposits can be removed with commercially available decalcifiers.
Maintenance intervals depend on operating conditions.