Unit UT381 Manual de usuario
Luminometer
Instruction Manual
UT381/382
UT381/382 Instruction Manual
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Contents
Chapter Page
I UT380 Series Product Introduction
II Unpacking Inspection
III Safety Instruction
IV Meter Structure
V Setting and Operation of Meter
VI Specications
VII Maintenance
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UT381/382 Instruction Manual
I UT380 Series Product Introduction
UT380 series luminometer has two models: UT381 and UT382. UT380 series
luminometer is a kind of digital meter applying high-precision digital visible light
sensor and 8-bit microprocessor processing data.
Illuminance: Illuminance means the luminous ux received on each unit area
of illuminated object, with adopted unit of foot candle (12 inches make 1foot)
in Britain and USA and meter candle in Europe. 1 foot candle means the
illuminance received on the surface from the direct 1 candle light source with 1
foot away from the illuminated surface, abbreviated as FC. In the same way, 1
meter candle means the illuminance received on the surface from the direct 1
candle light source with 1 meter away from the illuminated surface, abbreviated
as Lux. UT380 series can test illuminance within 0～20,000Lux, and UT382 can
be connected with PC to realize real-time data storage and analysis, and the data
recorded in luminometer can be transmitted to PC to analyze, print and record,
etc.
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UT381/382 Instruction Manual
II Unpacking inspection
Unpack and check, if there is any damage or loss, contact with the nearest local
sales service agency
1. Mainframe 1 unit
2. Instruction manual 1 copy
3. USB testing line (only for UT382) 1 piece
4. Software disc(only for UT382) 1 piece
5. 9V battery 1 piece
6. Sensitive mirror cap 1 unit
III Safety Instruction
Warning
potential operation and condition which are dangerous or factors which
may cause damage to the luminometer are indicated in following context!
Motion or status with potential harm to users or the factors having possible
damage on illuminometer will be identied as below.
Please use the luminometer according to the instructions, or the luminometer
damage or personal injury may be caused. In order to avoid luminometer damage
and personal injury, please operate according to following instructions.
● Check if luminometer shell is broken or any part loss before using. Do not
use the meter if it is damaged.
● When battery indicating sign “ ” appears, please replace battery as soon
as possible to avoid measured data error.
● When the luminometer work abnormally, do not use it, and please send it to
the designated maintenance center of our company for repair by professional
service man.
UT381/382 Instruction Manual
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● Please do not use it in the place adjacent to explosive gas, steam and dust.
● Do not dismantle the shell of luminometer without authorization to avoid
luminometer damage.
● Do not charge the battery to avoid battery explosion and personal injury.
Please pay attention to the “+” and “-” of the battery during installing.
● Especially keep the sensitive mirror clean and away from scratch, cover it
with cap after completing measurement.
UT381/382 Instruction Manual
1 Sensitive mirror
2 Mainframe
3 Display screen
4 Keyboard
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UT381/382 Instruction Manual
IV Meter Structure
1. Meter structure (Figure 1,Table 1)
Figure 1
Table 1
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UT381/382 Instruction Manual
2. Signs (Figure 2, Table 2)
Figure 2
Auto range sign
Minimum value display sign
Maximum value display sign
Data hold sign
Main display
Full storage display sign
Auto power off sign
USB communication (UT382 only)
Low voltage sign
record number
Secondary display
Data record storage sign
nstruction of “reading ×10”
Illuminance unit (Lux)
Illuminance unit (Britain and USA)
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MIN
Auto
MAX
HOLD
FULL
USB
LoadNo
REC
Table 2
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UT381/382 Instruction Manual
3.Keys description (Figure 3 )
Figure 3
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1. Power on/off key: long press to power on, shot press to power off.
2. Unit selection key: under measuring state, press this key to switch the unit of
reading between Lux and FC
3. Maximum value and minimum value selection key: under measuring state, press
the key to switch between normal measurement, MAX and MIN in order of
normal measurement→MAX →MIN. When “MAX” or “MIN” sign is displayed
on LCD, the luminometer just displays the maximum reading value or the
minimum reading value.
4. Auto range and Manual range selection key: in auto range state, press the key to
enter manual range state; press once again to enter low range and high range
one by one; long press the key to return to auto range state.
5. Data memory and delete key: press this key to save measured data automatically
or manually, the biggest storage capacity: 2044 pieces; press this key and power
on the meter at the same time, you can delete the recorded data.
6. Menu key: long press this key to enter the function setting mode; short press this
key again to enter next function in order of USB/APO/SEC/CODE/DEF？/ normal
measurement; press HOLD key to exit menu mode.
7. Data hold key: press this key to lock the measured data display on LCD, and
display “HOLD” sign at the same time; press this key again to exit hold function.
UT381/382 Instruction Manual
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