Unit UT382 User manual

I Overview
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 flux 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.
II Unpacking Inspection
Unpack and check, if there is any damage or loss, contact with the nearest local
sales service agency
1. Mainframe 1 pc
2. Instruction manual 1 pc
3. USB testing line (only for UT382) 1 pc
4. Software disc(only for UT382) 1 pc
5. 9V battery 1 pc
6. Sensitive mirror cap 1 pc
III Safety Instruction
Warning
Actions and conditions that may pose hazard to the user or may cause
damage to the Luminometer.
please use the luminometer as specified in the manual, otherwise it may cause
damage to the luminometer or personal injury. In order to avoid luminometer
damage and personal injury, please operate according to following instructions.
●Check if luminometer shell is broken or any part is lost 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 works abnormally, do not use it, and please send it to
the designated maintenance center of our company for repair by professional
personnel.
●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.
1 Sensitive mirror
2 Mainframe
3 Display screen
4 Keyboard
IV Meter Structure
1. Meter structure (Figure 1,Table 1)
Figure 1
Table 1
2. Display symbols (Figure 2, Table 2)
Figure 2
Auto range
Minimum value display
Maximum value display
Data hold
Main display
Full storage display
Auto power off
USB communication (UT382 only)
Low battery Indication
record number
Secondary display
Data record storage
Indicator for "reading ×10"
Illuminance unit (Lux)
Illuminance unit (Britain and USA)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
MIN
Auto
MAX
HOLD
FULL
USB
LoadNo
REC
Table 2
3.Keys description (Figure 3 )
Figure 3
1
2
3
4
5
6
7
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 and minimum values selection key: under measuring state, press
the key to switch from normal measurement→ MAX→ MIN modes.
When “MAX” or “MIN” sign is displayed on LCD, the luminometer just displays
maximum or minimum reading.
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 luminometer can save up to 2044 sets. 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 to
access 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.
V Setting and Operation
1. Auto power off: power off in about 10 minutes automatically
●Auto power off or not selection setting function: long press “MENU” to enter
function selection menu, and then short press it to select “APO.0” or “APO.1”
interface, and then press “RANGE/+” or “MAX/MIN/-” key to switch between
“APO.0” and “APO.1”; press “MENU” key to enter next function setting or
press “HOLD” key to exit function setting, and luminometer will record the
updated settings.
●When "APO.0" is selected, auto power off function is closed, namely, the
meter won’t be power off automatically; if "APO.1" is applied, auto power
off function is selected, and the auto power off sign is displayed on the
screen at the same time. After power off, the luminometer will record the
settings which will be restored after it is power on, it is unnecessary to set
up again at each time.
2. Data memory and delete: auto and manual data memory
●The interval of auto data memory is within 0.5-255 seconds, which is

adjustable; long press “MENU” to enter function selection menu, and then
short press it to select SECREC interface, while the auto memory interval is
displayed on the main display; press “RANGE/+” or “MAX/MIN/-” key to adjust
the auto memory interval; press “MENU” key to enter next function setting or
press “HOLD” to exit function setting. And luminometer will save the updated
settings.
●Long press “REC/ERASE” to save data automatically, and “REC” sign
on secondary display flashes, and the luminometer will save the
measured data according to the current auto saving interval setting; if the
storage space of luminometer is fully taken up, the system will exit auto
memory; and “FULL” sign will be displayed on LCD; press “REC/ERASE” key
to exit auto data memory function.
●Manual data memory: in the normal measurement state, press “REC/ERASE”
once to save one measured data, and “REC” sign displayed on secondary
display flashes once.
●When 2044 pieces of data is fully recorded, “FULL” sign will be displayed on
LCD, and no data can be saved at this moment.
●Under power-off state, press “REC/ERASE” and power on meanwhile, when
“CLR” sign is displayed on LCD, all saved data will be cleared.
3. View saved data:
●Short press “MENU” to enter view recorded data function; if there is no
data record in the luminometer, “－－－－” sign will be displayed on both LCD
main display and secondary display, and the luminometer will return to normal
measurement state in about 0.5 seconds; If there a certain data records in
the luminometer, the total number of current data records will be displayed on
LCD secondary display, and the value of the last piece of data will be
displayed on the main display.
●After entering option of view recorded data, press “UNIT” to view the 1st
piece of recorded data; press “RANGE/+” and “MAX/MIN/-” keys to view data
records forward or backward; each press on HOLD button to increment by
100 sets, the meter will return to the first record when the maximum number
has been reached.
●The luminometer can store up to 2044 records.
4. Restore to factory defaults:
●Long press “MENU” key to enter function setting, and then short press this
key to select "DEF?" option, and “DEF?” sign displays on the LCD and
flashes, at this moment you can press “HOLD” to restore to factory defaults;
press “MENU” or “REC/ERASE” to exit.
●After restoring to factory defaults, the defaulting state of the system is: USB.0
(no USB transmission); APO1 (auto power off); 60s (auto record interval is
set up as 60s); clearing all data records.
5.USB data transmission function: (only for UT382, See Figure 4)
●Long press “MENU” to enter USB
transmission setting, and “USB.0” or
“USB.1” will be displayed on LCD;
USB.0 means that data can’t be
transmitted; “USB.1” means that data
can be transmitted; press “RANGE/+”
or “MAX/MIN/-” key to switch between
“USB.0” and “USB.1”.
●The meter is set to "USB.0" mode
automatically every time it is powered on.
●The luminometer (UT382) communicates
with PC using USB wire and your PC must
have a USB port. See Figure 4 for the
connection diagram.
●When connecting UT382 to the computer,
you cannot operate any functional buttons
during transmission. Figure 4
6. Illuminance measurement
●In process of measuring illuminance, the sensitive mirror must be
perpendicular to the measured illuminating source to ensure accuracy of
measured data..
●If distance between measured illuminating source and illuminometer,
measuring position, angle or environment is different, then the measured
data will be different; because the intensity of light varies with change of
distance, position, angle and environment.
●Make sure there is no scratch or dirt on sensitive mirror of luminometer, or
the measured data won’t be accurate.
●When the illuminance exceeds the measuring range of the luminometer, “OL”
sign will be displayed.
●After completing measuring, cover the sensitive mirror with cap to avoid
scratch on sensitive mirror and keep it clean.
VI Specifications
1. General specification
●Low battery indication:
●Type of sensor: digital visible light sensor
●Sampling rate: 100 times/s
●Power supply: one 1604A 6F22 9V battery
●Battery life: 200 hours for typical battery (alkaline battery)
●Dimensions: 195mmx 45mmx 26m
●Weight: about 185g (including battery)
2. Environment limit
●Indoor use
●Safety standards: EN61326: 2006;
EN55022: 1998+A1+A2;
EN55024: 1998+A1+A2
●Pollution degree 2
● Operating temperature and humidity:
0℃-30℃ (no more than 80%RH);
30℃-40℃ (no more than 75%RH);
40℃-50℃ (no more than 45%RH)
●Storage temperature and humidity: -20℃-+60℃ (no more than 80%RH)
3. Electrical specification
●Accuracy tolerance: ± (a%reading +b digits), calibrate once each year
●Environment temperature: 23℃±5℃
●Environment humidity: ≤80% RH
●Temperature coefficient: 0.1× (accuracy tolerance)/℃
Illuminance measurement
Function Range Resolution
Accuracy Tolerance: ± ( a %reading +b digits)
Illuminance
measuring
(LUX)
Illuminance
measuring
(FC)
The accuracy tolerance of FC can
be verified by unit conversion:
FC=10.76lux, if accuracy tolerance
verification is needed, it can be
achieved by unit conversion.
20Lux
200Lux
2000Lux
20000Lux
2FC
20FC
200FC
2000FC
0.01Lux
0.1Lux
1Lux
10Lux
0.001FC
0.01FC
0.1FC
1FC
± (3% + 20)
± (3% + 8)
± (3% + 8)
± (3% + 8)
VII Maintenance
Warning
During replacing battery or measuring, keep the sensitive mirror from scratch or
dirt to avoid damaging the mirror or influencing the measuring precision; and do
not charge the replaced battery to avoid explosion and safety accident!
1. Battery installation and replacement
When “ ” is displayed on the luminometer, replace the battery immediately.
Replace the battery by following procedures:
●Power off
●Loosen the screw of battery cover and take it off.
●Replace with a new 6LF22 9V 1604A battery, please use battery with the
same model, and do not use unauthorized battery.
●Pay attention to the anode “+” and the cathode “-”. After completing
installation, install the cover and tighten the screw.
2. General maintenance
●When the surface of luminometer is dirty, clean with wet cloth and neutral
detergent, grinding miller and solvent are forbidden.
●When the luminometer is damaged and needs to be repaired, please send it
to the designated maintenance center of our company for repair by
professional service man, do not repair it without authorization.
●Especially in the process of using, keep the sensitive mirror of luminometer
away from scratch or dirt to avoid damaging the mirror or influencing the
measuring precision.
●Remove the battery if it won’t be used for a long time.
●Store the luminometer in a place free of moist, high temperature and strong
magnetic field.
Specifications and other information shown on this instruction manual are subject
to change without notice
●LCD: 3 1/2-bit display, 2000-count.
● Over range display: “OL”
P/N:110401104377X DATE:2018.06.26 REV.5