Lutron Electronics YK-2005LX User manual

200/2,000/20,000/100,000 Lux, LUX/Feet-candl
e
Real time data logger, 16000 Data logger no., RS232
LIGHT METER
Model : YK-2005LX

TABLE OF CONTENTS
1. FEATURES................................................................1
2. SPECIFICATIONS......................................................2
2-1 General Specifications..........................................2
2-2 Electrical Specifications........................................ 4
3. FRONT PANEL DESCRIPTION.....................................5
4. GENERAL MEASURING PROCEDURE...........................7
4-1 Light measurement..............................................7
4-2 Data Hold...........................................................
.
9
4-3 Data Record (Max., Min. reading)......................... 9
4-4 Data Logger........................................................10
5. ADVANCED ADJUSTMENT PROCEDURE......................
.
12
5-1 Check Memory Space...........................................13
5-2 Clear Memory......................................................14
5-3 Date/Time Setting...............................................
.
14
5-4 Sample Time Setting............................................14
5-5 Auto Power Off Default Setting.............................14
5-6 Unit Default Setting............................................ 15
5-7 Auto/Manual Default Setting............................... 15
5-8 Escape from the SETTING function.......................15
6. HOW TO SEND THE DATA OUT FROM THE METER.....
.
16
7. RS232 PC SERIAL INTERFACE...................................
.
19
8. BATTERY REPLACEMENT...........................................21
9. SYSTEM RESET.........................................................21
10. OPTIONAL ACCESSORIES........................................22
11. SPECTRUM of LIGHT SENSOR..................................23

1. FEATURES
* Wide range, 200/2,000/20,000/100,000 LUX.
* LUX & Foot Candle unit selection.
* Spectrum of photo sensor meets C.I.E..
* 4 kinds selection lighting type (Tungsten, Fluorescent,
Sodium or Mercury light ).
* Zero adjustment by push button.
* Auto range or manual range can be defaulted.
* Real time data logger, build in clock ( hour-min.-sec.,
year-month-date ).
* Auto or manual data record, 16,000 Data logger no.
* Wide sampling time adjustment range from two
seconds to 8 hours 59 minutes 59 seconds.
* RS232 computer interface.
* Can default auto power off or manual power off.
* Can default the display unit to LUX or Ft-cd.
* Super large LCD display with contrast adjustment for
best viewing angle.
* Data hold, record max. and min. reading.
* Microcomputer circuit provides special function & offer
high accuracy.
* Power by UM3 ( 1.5 V ) x 4 batteries or DC 9V adapter.
* RS232 PC serial interface.
* Separate probe, easy for operation of different
measurement environment.
1

2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 58 mm x 34 mm.
Measurement LUX, Feet candle ( Ft-cd )
Unit
Lighting Type Normal ( Tungsten ) light
Selection Fluorescent light
Sodium light
Mercury light
Light The exclusive photo diode & color
Sensor correction filter, spectrum designed to
Structure meet C. I. E.
Zero Adj. By push button.
Sampling Time Manual Push the data logger button
of Data Logger once will save data one time.
@
Set the sampling time to
0 second
Auto 2 sec to 8 hour 59 min. 59 sec.
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Power off Auto shut off saves battery life or
manual off by push button.
@
Can default auto power or manual
power off.
@
When default auto power function,
power will off automatically after
10 min., if no button be pressed.
2

Sampling Time Approx. 1 second.
of display
Data Output RS 232 PC serial interface.
Operating 0 to 50 .℃
Temperature
Operating Less than 80% R.H.
Humidity
Power Supply DC 1,5 V battery ( UM3 ) x 4 PCs,
* main instrument ( Heavy duty type ).
DC 9V adapter input.
@ AC/DC power adapter is optional.
Power Current Approx. DC 19.0 mA
Weight 406 g/ 0.89 LB. @ Battery is included.
Dimension Main instrument :
2000 x 762 x 368 mm
Light Sensor Probe :
85x55x12 mm(3.2x2.2x0.5 inch).
Accessories Instruction manual.....................
.
1 PC
Included Light sensor with protective
cover.........................................1 PC
Carrying case.............................
.
1 PC
Optional Type K thermocouple probe.
Accessories AC to DC 9V adapter.
RS232 cable, UPCB-02.
Data Acquisition software,SW-U801-WIN.
Data Logger software, SW-DL2005.
3

2-2 Electrical Specifications (23±5 )℃
Measureme
n
Range Max. In-range
Display
200 LUX 0 - 199.9 LUX
2,000 LUX 180 - 1,999 LUX
LUX 20,000 LUX 1,800 - 19,990 LUX
100,000 LUX 18,000 - 100,000 LUX
20 Ft-cd 0 - 18.6 Ft-cd
200 Ft-cd 16.7 - 186.0 Ft-cd
Feet-candle 2,000 Ft-cd 167 - 1,860 Ft-cd
10,000 Ft-cd 1,670 - 10,000 Ft-cd
Range Resolution Accuracy
200 LUX 0.1 LUX
2,000 LUX 1 LUX
20,000 LUX ( 2000x10 ) 10 LUX
100,000 LUX (1000x100 ) 100 LUX ± (4 %+2 dgt)
20 Ft-cd 0.01 Ft-cd
200 Ft-cd 0.1 Ft-cd
2,000 Ft-cd 1 Ft-cd
10,000 Ft-cd ( 1000x10) 10 Ft-cd
Note : Accuracy tested by a standard parallel light
tungsten lamp of 2856 K degree temperature.
@
Above specification tests under the environment RF
Field Strength less than 3 V/M & frequency less than
30 MHz only.
4

3. FRONT PANEL DESCRIPTION
5

3-1 Display
3-2 Power Button
3-3 HOLD Button ( ESC Button )
3-4 REC Button ( Enter Button )
3-5 SOURCE/ZERO ( Up Button▲
3-6 Range Button ( Down Button )▼
3-7 Send Button ( Clock Button )
3-8 SET Button ( Logger Button )
3-9 Stand
3-10 Battery Compartment/Cover
3-11 Tripod Fix Nut
3-12 LCD Brightness Adjust VR
3-13 System Reset Switch
3-14 RS-232 Output Terminal
3-15 DC 9V Power Adapter Input Socket
3-16 Probe Input Socket
3-17 Probe Plug
3-18 Light Sensor
3-19 Sensor Handle
3-20 Cover of Light Sensor
6

4. GENERAL MEASURING
PROCEDURE
The meter default function are following :
*The display unit is LUX.
*Auto range.
*Auto power off.
*The light type is Normal ( Tungsten ).
*The sampling time of data logger function is
2 seconds.
4-1 Light measurement
1)Install the " Probe Plug " ( 3-17, Fig. 1 ) into the
" Probe Input Socket " ( 3-16, Fig. 1 ).
2)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ). The display will show the " LUX " unit ,
at the same time the bottom display will show the
light type " Normal ( Tung. ) ".
Now the meter is ready for make the measurement.
3)Use the fingers to hold the " Sensor Handle " ( 3-19 ),
face the " Light Sensor " ( 3-18, Fig.1 ) against to the
measurement light source directly. The display
will show the light measurement value in LUX unit.
* If display show x 10 ( x 100 ) marker, then it
should multiply the display value by 10 ( 100 ).
7

Measurement Consideration
1)Light type selection
The light meter is calibrated under a precision
" Standard light tungsten incandescent source of 2856 K
degree ". Meter light type is selected is to " Normal (
Tungsten. ) " .
The meter default light type is Normal " Tung. "
type. For the general application, it is not
necessary to change the light type selection to
any other type.
If intend to make precision measurements under
a different light source from :
MERCURY LIGHT
FLUORESCENT LIGHT
SODIUM LIGHT
It can press the " Light Source Button " ( 3-5, Fig. 1 )
to select the desired light type , the light type name
will present on the lower display. When set the different
light type beyond the " Normal ( Tungsten ) ", the
system will automatically multiply a minor correction
factor to make the compensation precisely.
For the unknown light type, just select the light
type to Normal ( Tung. ) "
8