BUCHI KjelSampler K-377 - Manual (Page 53)

5 Putting into operation
53 K-375/376/377 Operation Manual, Version B
5 .7 Level sensors
Four level sensors are contained in the standard delivery of the instrument. Three are intended for
the storage tanks (NaOH, H
3
BO
3
and water) and one for the waste collection tank (either the sample
tube or receiver waste). Additional level sensors are available as optional equipment. Each individual
sensor is connected to the corresponding socket on the rear side of the device (see section 5.2.1).
The sensitivity of the capacitive level sensors can be adjusted to safely detect the liquid level, if
necessary.
Assemble the level sensors according to the following picture:
ቢ
ባ
Fig. 5.8: Assembly of the level sensors
• Mount the sensor at the tank using the provided O-ring (see a in figure 5.9) and connect it at
the rear-side of the device to the corresponding port (NaOH, H
2
O, H
3
BO
3
, Waste Sample Tube,
Waste Receiver, or Titrant). The sensitive side of the sensor (marked with the crosshair)
has to face the tank!
• Make sure the tank is filled with the corresponding liquid.
• Shift the sensor together with the rubber strap until it is located below the liquid level.
The red LED at the sensor should now be off.
• If the sensor does not safely detect the liquid:
Use a small screwdriver to set the sensitivity (with the small adjustment screw) of the sensor (see
b in figure 5.9).