Electronics; Waters 2410 Differential Refractometer Optics Bench Assembly Light Path - Waters 2410 Operator's Manual

LED
LED Lens Dual-Element
Photodiode
Figure 1-8 Waters 2410 Differential Refractometer Optics Bench Assembly Light Path

1.3.3 Electronics

The 2410 refractometer has both analog and digital components, and includes hardware such as the
front panel keyboard and printed circuit (PC) boards and their interconnections. The following PC
boards are included in the 2410 refractometer electronics.
• CPU Board – Provides the interface between the analog input signals from the optics and
the microprocessor, for further signal conditioning. Generates analog output signals, drives
the LED, Auto Zero, and signal compensation electronics, and stores and executes input
from the front panel keypad and the rear panel contact closures. Provides communication
between the 2410 refractometer and external devices through the IEEE-488 interface and
terminal strip input/output connections.
• Front Panel Board – Controls the keypad, indicators, and display.
• Power Distribution Board – Distributes DC voltages to the CPU board, fan, and heaters.
Provides the electronic switching for control of the oven compartment.
Heat Exchanger Coils Collimating Lens
LED
Lens
Mask
Mirror
Flow Cell
Principles of Operation 1-15
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