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2.2.2.6. Washing pumps
(1) WASHING WATER diaphragm PUMP
(2) PUMP-ELECTROVALVE PVC TUBE
(3) 2-CHANNEL ELECTROVALVE
(4) FITTINGS
(5) ELECTROVALVE-LIMITER PVC TUBE
(6) FLOW VOLUME LIMITER
(7) WASTE EXTRACTION diaphragm PUMP
(8) SUPPORT
The needle washing system has two diaphragm pumps, one for the washing water (1) and another for waste extraction
(7). The PVC tube (2) connects the washing pump to the 2-way electrovalve (3), which is used to prevent the washing
station from unloading and to establish the precise amount of washing water. The PVC tube (5) connects the electrovalve
to the flow volume limiter (6). The electrovalve has stainless steel fittings for the connection of the PVC tubes. The
support (8) fastens the pumps and the electrovalve to the base of the instrument.
2.2.3. Reactions rotor with integrated optical system
The reactions rotor is thermostated at 37ºC. The optical system, made up of a lighting system and a photometric system
takes the readings directly on the rotor reaction wells. The lighting system has a halogen lamp, a filter wheel for the
selection of the wavelength and various lenses to form the appropriate beam of light. The photometric system contains a
silicon photodiode and the corresponding electronics to obtain a digital value that is proportionate to the light intensity
received.
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4
1
2
8
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