Unit UT381 Manuale utente

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2

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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 Specications

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 identied 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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15

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