Mindray BS-120 Service Manual

6-8 6 Hardware
6.6.6 Reagent Refrigeration Board
Compared with other circuit boards, the reagent refrigeration board is an independent unit;
it can control the cooler chip on or off and then make the reagents cool; it can adjust the
temperature in the reagent carousel; also, it can drive the fans of the whole system and
feedback the signal of the working status of the funs to the main board; the detailed
functions are:
 Controlling the refrigeration
 Controlling the indicating LED of the refrigeration
 Controlling the fans and defogging the code scan’s windows (reversed)
 Feedbacking the sigual of the working status of the fans for lamp
Figure 6-6 shows the function framework of the reagent refrigeration board.
Figure 6-6 Reagent Refrigeration Board
6.6.7 Level Detection Board
The board detects the liquid level, the detailed functions are:
 Detecting the reagent level and sample level with high reliability
 Transferring the level detection signal to the main board when the probe touches the
liquid level
 Protecting the probe from collision vertically and generating the detection signal
which is sent to the main board.
Figure 6-7 shows the function framework of the level detection board.

Mindray BS-120 Specifications

General

Throughput	120 tests/hour
Display	LCD touch screen
Reaction Temperature	37°C
Light Source	Halogen lamp
Photometric Range	0-3.0 Abs
Type	Bench-top, discrete, random access
Sample Type	Serum, plasma, urine
Connectivity	RS-232, USB
Analysis Method	Photometric
Sample Volume	2-35 µL
Reaction Volume	180-500 µL
Wavelengths	340, 405, 450, 505, 546, 578, 630, 700 nm
Control	Internal quality control, calibrator
Cleaning	Automatic cleaning system
Measurement Principle	Absorbance
Power Supply	AC 100-240V, 50/60 Hz
Operating Environment	Temperature 15-30°C, humidity 35-85% RH