RADIOMETER FLEX ABL90, Reference Manual

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ABL90 FLEX operator's manual 4. Electronics
4-3
Electronic boards and components
Universal power supply with input from 100-240 VAC, 50-60 Hz.
It includes three internal DC output levels, +5 VDC, +12 VDC, and +24 VDC,
distributed to different parts of analyzer electronics.
Power supply is prepared for battery option.
The Sensor module includes the Wet Section Control, Sensor Interface,
Oximetry System, Selector Detector and Cassette/Instrument ID.
Wet Section Control:
The Wet Section Control PCB handles the measurement system and takes care
of data collection and actuator controls.
It includes a microcontroller circuit, motor drivers, oximetry circuit and
barometer.
It interfaces to User Interface Module, Sensor Interface PCB, Oximetry System
(spectrophotometer and hemolyzer) and other peripheral sensor module PCB´s.
Sensor Interface:
The Sensor interface PCB handles data collection from electro-chemical and
optical sensors.
It includes high-impedance amplifiers and integrated analog-to-digital
converters to acquire sensor signals and transmit those data to Wet Section
Control.
Selector Detector:
The Selector Detector PCB handles the position detection of the selector function
in the liquid cassette.
It communicates with the Wet Section Control through an I2C interface.
Cassette / Instrument ID:
The Cassette/Instrument ID PCB handles data collection for the instrument- and
liquid cassette.
It includes a unique instrument ID and a connector to collect data from the
liquid cassette ID chip.
Oximetry System:
The oximetry system consists of a hemolyzer with cuvette and a 138-
wavelength spectrophotometer with a measuring range of 467-672 nm. The
spectrophotometer is connected via an optical fiber to a combined hemolyzer
and measuring chamber.
The Inlet Position with guide plate handles the detection of inlet positions and
signaling LED´s.
It includes Hall detectors and an input/output port that communicates with the
Wet Section Control through an I2C interface.
The User Interface Module includes the CPU Unit, display unit and barcode
reader.
Power supply
Sensor Module
Inlet
positioning
User Interface
Module