Human Humalyzer Junior Service manual

Service Manual

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Cat.-No.: 18076

Ver. 1.02

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Service Manual Humalyzer Junior Page 2

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The HUMALYZER Junior analyzer for clinical-chemistry is an interferential filter
photometer, completely managed by microprocessors, that can take photometric
measures and process them according to programs with parameters that can be
entered by the operator. Particularly, the following determinations can be carried out:

$;8/);$65(

'()*+,-(.*D5IJKLJMNOMPIJF

:76(4758

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The selection of the interferential filter is automatic, with powered handling managed
by a microprocessor. This characteristic makes reading easier and eliminates filter
selection errors that may occur in the instruments with manual selection. The
instrument optics is very sophisticated: there is a tungsten lamp (2 W) and the light
beam is centered by a quartz lens allowing a high measuring accuracy even when
reduced volume cuvettes are used. 30 programs can be stored. All the test
parameter values can be stored permanently in the instrument.

A 2-position temperature switch is also installed in the instrument for square and
round cuvettes. The temperature of the thermostatic unit is equal to the cuvette one,
i.e. 37°C. The instrument is programmed by means of a keyboard for the entry of the
required parameters by a 32-character alphanumeric display. This display visualizes
also the instrument states and error or malfunction signaling. The test results are
directly displayed in the pre-selected measuring units when programmed.

The use of the instrument is assisted by an advanced software that guides and
controls the operations made by the user. The instrument is equipped with an
acoustic signaler to furthermore help the user. A sound with a tone different from the
usual one warns when the wrong key is pushed. To make an analysis it is necessary
to enter all its parameters correctly, including the K and standard values.

The instrument is provided with a serial RS-232 standard output.

Service Manual Humalyzer Junior Page 3

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Photometric systems
Light source: 2 W long-life Halogen incandescent lamp
Spectral field: 340 to 700 nm.
Filter change: automatic
Filters: 340,405,505,546,578nm.; 8 nm. pass-band
Detector: solid state device

Thermostating
Heating element: semiconductor
Temperature: 37 °C
Temperature accuracy: ±0.2 °C
Stabilization period: 10-20 min.
Thermostatic unit: 2 positions for square or cylindrical cuvettes

Measuring system:
Reset: automatic
Measuring range: 0 to +2,000 OD
Photometric linearity: ±2% from 0 to 1,700 OD 1%
Photometric accuracy: ±2% from 0 to 1,700 OD
Precision: ±2 digit
Drift: lower than 0.005 O.D. per hour
Reagent volume: 1 mL (minimum)
Measure method: End-point, Kinetics, Fixed-time, Differential

Data display and programming:
Keyboard: with 4 function keys
Display: back-illuminated liquid crystals

alpha-numeric, with 32 characters

Thermal printer: (

IQMPIJOR

) 20 columns
Serial output RS-232 standard
Power supply: 220 V, 50 Hz; 117 V, 60 Hz; 40 VA
Size: cm. 27.5x21x9
Weight: 3.8 kg.

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The instrument is equipped with a keyboard of 4 keys. For the quality control and
maintenance of the instrument the 4 keys have particular functions. In the following
pages of this manual the 4 buttons will be identified as PG, ENTER, UP, DOWN
(from top to bottom in decreasing order).

Service Manual Humalyzer Junior Page 4

9,-*4(84*<)/=)$#8

To verify the correct functioning of all mechanical and electrical parts, the instrument
is equipped with a certain number of test programs.

These 12 test programs are divided in 3 groups of 4 each (TEST 0, TEST 4,TEST 8)

The 4 programs of TEST 0 are put in action switching on the instrument by keeping
pressed the ENTER key, the programs of TEST 4 by pressing the UP key, the
programs of TEST 8 by pressing the DOWN key.

When any of the test programs is activated (TEST 0, TEST 4, TEST 8), in the first
row of the display the following information will appear:

HUMANXXX N H.HH

HUMANXXX is the software version of the program

H.HH is the hardware version of the program

The second row indicated whether the incubator is on temperature or not:

NO TEMP incubator not on temperature

TEMP OK incubator on temperature

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The 4 keys have the following functions:

PG Turns on the filter motor and fills the display with F.

To switch off the instrument, any key can be pressed.

ENTER Turns off the display pixels.

UP Transfers the entire set of ASCII characters to the serial.

DOWN Turns on all display pixels.

Service Manual Humalyzer Junior Page 5

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PG Starts the reading procedure in absorbance with the lamp remaining

switched on continuously. Pressing the PG key, the lamp switches on.
Wait a few seconds (5-10 sec.) in order that the lamp temperature
becomes stable. Insert a blank cuvette. Press any key. On the display 3
numbers will appear: 2 on first row and 1 on the second row. The
number on the right side of the first row is the cuvette absorbance
present in the reading chamber. The number on the left side of the first
row is used during preamplifier board adjustment. Press any key to exit
from this function.

ENTER Select filter 1 (340 nm)

UP Select filter 2 (405 nm)

DOWN Select filter 3 (505 nm)

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PG Starts the reading procedure in absorbance with the lamp remaining

switched on continuously. Pressing the PG key, the lamp switches on.
Wait a few seconds (5-10 sec.) in order that the lamp temperature
becomes stable. Insert a blank cuvette. Press any key. On the display 3
numbers will appear: 2 on first row and 1 on the second row. The
number on the right side of the first row is the cuvette absorbance
present in the reading chamber. The number on the left side of the first
row is used during preamplifier board adjustment. Press any key to exit
from this function.

ENTER Select filter 4 (546 nm)

UP Select filter 5 (630 nm)

DOWN Select filter 6 (optional)

Service Manual Humalyzer Junior Page 6