Hardware features Chapter 2
Hydro 2000G/S Page 2-13
Tank
The tank can hold up to 150ml of sample and dispersant for circulation through the
cell of the optical bench.
Sample and dispersant can be directly poured into the tank. If doing so, do not
overflow the tank by filling it too quickly. Do not tip a sample onto the lip of
the tank as fine particles may settle out and bias the measurement.
Pump/stirrer
The stirrer, located in the base of the tank, agitates the sample/dispersant mixture in
the tank. The pump circulates the sample through the flow cell. The pump and
stirrer speeds are controlled independently through the software.
Warning!
Never put fingers in the tank when the pump/stirrer shaft is rotating.
Caution!
Never operate the pump/stirrer at more than half speed with the tank
empty.
Ultrasonic probe
The ultrasonic probe is used to help disperse samples. Its power is controlled
through the software.
Warning!
Due to the possible risk of sonication of the blood and its unknown effects,
never put fingers in the tank when the ultrasonic probe is in operation.
Level sensor
The level sensor automatically stops the tank being filled beyond a certain level. If
the tank fails to fill properly the level sensor may require cleaning or the threshold
settings may need adjusting. The Essentials Manual shows how to clean the level
sensor.
The level sensor must be set to detect different types of dispersant by setting the
level sensor threshold. This is done by selecting Configure-Accessories. The
Level Sensor Threshold section is shown below:
MAN0385-1.0 Hydro 2000G-S.book Page 13 Friday, March 16, 2007 4:02 PM
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