Elma ELMA-1336 User manual

CHROMA METER
ELMA-1336
INSTRUCTION MANUAL

CONTENTS
Title Page
1. INSTRUCTION.............................................................................1
2. FEATURES & APPLICATION.....................................................1
3. SPECIFICATIONS.......................................................................2
4. PARTS & CONTROLS ................................................................3
4-1 Description of Parts & Control keys........................................3
4-2 Description of Display.............................................................5
5. OPERATING INSTRUCTIONS....................................................7
5-1 Selecting Illuminance Unit lx or fc...........................................7
5-2 Talomg Color Measurements .................................................7
5-3 Taking Color Difference Measurement...................................8
5-4 Measuring the Correlated Color Temperature......................11
5-5 Using the Correction Factors (CF)........................................14
5-6 Manual Data Memory and Read Operations.........................16
5-7 Setting the Auto Power Off Time..........................................18
5-8 Setting the Real-Time...........................................................19
5-9 Auto Datalogging..................................................................19
5-10 Auto-Cycle Timer Datalogging............................................21
5-11 No-Cycle Timer Datalogging...............................................23
6. BATTERY CHECK-UP ＆REPLACEMENT .............................25
7. SPECTRAL SENSITIVITY CHARACTERISTIC........................26
8. MAINTENANCE.........................................................................26
9. SOFTWARE INSTALLATION AND OPERATION.....................26
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Copyright © 2014 Elma Instruments. All rights reserved.

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1. INSTRUCTION
The digital Chroma meter is a precision instrument used to measure color
coordinate, illuminance and correlated color temperature.
It meets CIE photopic spectral response.
The Chroma meter is compact, tough and easy to handle owing to its
construction.
The light sensitive component used in the meter is a very stable, long-life
silicone photo diode and spectral response filter.
Fully functional for professional requirements.
U.S. Pat. No. Des. 446,135
2. FEATURES & APPLICATION
Triple Display, 4-digit LCD reading.
LED Color Bin select function (x,y) or (Tcp, uv). (Use CD software)
User calibration function.
User reference value setting function.
Illuminance maximum/minimum measurement function.
Data Hold function.
Data memory and read function.
Data logger function.
Auto power off function.
USB Interface.
Applications:
Measure tristimulus values, chromaticity, color difference, correlated color
temperature, and illuminance of light sources.
R&D and color inspection of light in a variety of industries such as lamp
manufacturers, building and interior design.
Set-up projectors for presentation purposes.
Adjust color of CRTs, flat panel, and other display devices.
Evaluate and control color of light boxes and light booths.

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3. SPECIFICATIONS
Display:Triple display 4 digit LCD read out.
Measuring function:
Tristimulus values: XYZ
Chromaticity: (Ev, x, y); (Ev, u’, v’); (Ev, λd, Pe); (Ev, λd, Pc); (Ev, MAX, MIN).
Correlated color temperature: (Ev, Tcp, uv); ( Ev, Tcp, uv )
Color difference: ( X, Y, Z); ( Ev, x, y); ( Ev, u’, v’); ( Ev, u’v’);
( Ev, λd, Pe); ( Ev, λd, Pc)
Measuring range:0.1 to 99990 lx, 0.01 to 9999 fc (Chromaticity: 5 lx, 0.5 fcd or
above)
Accuracy:
Ev (Linearity): ±3%rdg±2dgts
xy: ±0.02 (800 lx, Standard Illuminant A measured)
Repeatability:
Ev: ±0.5%rdg±1dgt
xy: ±0.003 (800 lx, Standard Illuminant A measured)
Temperature drift:Ev: ±5%rdg±2dgts, xy: ±0.008
Humidity drift: Ev: ±3%rdg±2dgts, xy: ±0.005
CIE photopic f ’1:≦8%
Cosine response f2: ≦3%
Measuring Rate:1 sec
Photosensor:Silicon photocell
Data Memory Capacity: 80 sets. (Direct reading from LCD display)
Data Logger Capacity: microSD CARD 4GB (Maximum 200 blocks)
Operating / Storage Conditions: 0℃to 50℃<80% RH/-10℃to 60℃<70% RH
Power Source:6 pcs AAA size Battery
Battery Life (typical): 50 hours
Photosensor Lead Length: 150 cm (approx.)
Photosensor Dimensions: 92(L) ×60(W) ×29(H)mm
Dimension: 150(L) ×72(W) ×35(H)mm
Weight: Meter: 235g, Photosensor: 210g
Accessories: Carrying case, Instruction manual, Battery, CD software, USBcable.
Option Accessories: AC adaptor 9VDC 100mA.

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4. PARTS & CONTROLS
4-1 Description of Parts & Control keys
1. LCD Display: Triple 4 digit display with a maximum of 99990 readings and the
indicating signs of measured values, unit function symbols and
decimal points etc. are displayed.
2. Power Control key: Press this key to turn on or off the meter.
3. MODE key:
Sets the meter into the color measurement mode, and switches the color
coordinates.
Press this key to circulate the reading of (Ev, x, y), (Ev, u’, v’), (Ev, λd, Pe),
(Ev, λd, Pc), (X, Y, Z) and (Ev, MAX, MIN).
4. Hkey: Press this key momentarilly to freeze or unfreeze the displayed reading.
5. key:
Sets the meter into color difference measurement mode, and switches the
color difference display.
Press this key to circulate the reading of ( Ev, x, y), ( Ev, u’, v’), (
Ev, λd, Pe), ( Ev, λd, Pc), and ( X, Y, Z).
6. SET key: Press this key to enter the setting mode.
Press key to exit this mode.

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SET01 : Measurement illuminance unit lxor fc setting mode.
SET02 : Real time setting mode.
SET03 : Auto datalogging interval time setting mode.
SET04 : Auto-cycle timer datalogging setting mode.
SET05 : No-cycle timer datalogging setting mode.
SET06 : Auto power off time setting mode.
7. Tcp key:
Sets the meter into color temperature measurement mode.
Press this key to circulate the reading of (Ev, Tcp, uv) and ( Ev, Tcp,
uv ).
8. Time key: Press this key to switch the display of minute : second, day/hour and
year./.month. The real time will be displayed if the real time setting
function was performed, otherwise the elapsed time will be displayed.
9. key:
Store the displayed setting value or exit a setting mode.
Recall the reference value or other for use in measurement.
10. CF key: Use this key to switch use of correction factor ON or OFF, and to set
the CF.
11. MEM key:
key: In the setting mode, press this key move flashing cursor to left.
MEM key: a). Memory function: Press this key one time to store a measuring
value.
b). Press this key for 3 seconds to enter or exit the datalogging
mode.
12. ▲▼key:In the setting mode, press this key to increase, decrease the
displayed setting.
In the READ mode, press this key to increase/decrease the memory
location.
13. READ key:
key: In the setting mode, press this key move flashing cursor to right.
READ key:
Read function: Press this key to enter the READ mode, then press ▲
or ▼key to select the desired stored number of data to
read. Press key to exit.

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14. AC adaptor socket (9V, 100mA).
15. Micro-USB
16. Photo Detector Receptor Window: The spherical summit of the detector
window is used as the illuminance
reference plane.
17. Tripod mounting: 1/4”-20 unc female thread.
18. Photo Detector Cap.
19. microSD CARD 4GB.
4-2 Description of Display
A: Datalogging mode indication.
M: Disappeared one time store one sets data into the memory.
: Manual memory address number indication.
: Manual memory full indication.
R: Read mode indication.
: Recall manual memory address number indication.
H: Data hold mode indication.
SET : Setting mode indication.
INTV : Datalogging interval time indication.
SD : microSD CARD satus indication.
CF : Correction Factors mode indication.
./. : Indicates the elapsed date or the real date (year./.month).
/: Indicates the elapsed date or the real date (day/hour).
:: Indicates the elapsed time or the real time (minute/second).
: Battery capacity indication.

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: Low battery indication.
: Auto power off indication.
Ev : Illuminance value indication.
X, Y, Z : Tristimulus values indication.
x, y : Chromaticity coordinates values indication.
u', v’: Uniform chromaticity coordinates values indication.
Tcp : Correlated color temperature value indication.
λd: Dominant wavelength value indication.
λc: Complementary wavelength value indication.
uv : Duv, closest distance from the planckian locus value indication.
Pc : Colorimetric purity value indication.
Pe : Excitation purity value indication.
X, Y, Z : Tristimulus values color difference indication.
Ev : Illuminance value difference indication.
x, y : Chromaticity coordinates values color difference indication.
u’, v’: Uniform chromaticity coordinates values color difference indication.
u’v’: u’v’=
22 )v'()u'(
, Color difference distance value indication.
λd: Dominant wavelength value difference indication.
Pe : Excitation purity value difference indication.
Pc : Colorimetric purity value difference indication.
Tcp : Correlated color temperature value difference indication.
uv : Duv, closest distance from the planckian locus value difference
indication.
REF : Reference color values indication.
lx, fc : Illuminance units.
MAX : Illuminance maximum value indication.
MIN : Illuminance minimum value indication.
K: Correlated color temperature unit.
nm : Wavelength unit.
: When power on, the letters to indicate that zero calibration
is in progress. This calibration need to attach the photo
detector cap.
: If no attach the photo detector cap then power on, the
letters to indicate that zero calibration can not progress.

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5. OPERATING INSTRUCTIONS
Zero Adjustment
The meter performs zero adjustment automatically when the power
comes on. This adjustment need to attach the photo detector cap.
5-1 Selecting Illuminance Unit lx or fc
1. Press the key to turn on the meter.
2. Press SET key, the annunciator “SET 01”and “UnIt”are displayed.
3. Press or key to select “lx”or “fc”unit.
4. Press key to store the desired measure unit.
5-2 Taking Color Measurements
When taking measurements, be careful to hold the photo detector so that the
receptor window is clear of shadows (such as your own shadow) and reflected
light.
1. Press the key to turn on the meter.
2.2. Remove the photo detector cap and aim the receptor at the light source
you want to measure.
3. Press MODE key to enter the color measurement mode.
4. Press MODE key again to cycle switch displaying the (Ev, x, y) (Ev, u’, v’)
(Ev, λd, Pe) (Ev, λd, Pc) (X, Y, Z) (Ev, MAX, MIN) reading.
In the (Ev, MAX, MIN) display mode, press keyto restart the illuminance
maximum and minimum reading function, the maximum and minimum values
are thenreset to the present reading.
Formateret: Punktopstilling

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5. Press Hkey, if the displayed value need to be hold. In Hmode, press
MODE key to cycle switch display the other measured values and press
Time key to display the held date and time. Press Hkey again to exit the
data hold mode.
Low –Light Alert
If the measured illuminance is less thanabout 5 lx (0.5 fc), the following values on
the display will blink to alert you of this condition: x, y, u’, v’, λd, Pe, Pc, Tcp, uv,
Tcp, uv , x, y, u’, v’, u’v’, λd, Pe and Pc. The blinking display
lets you know that the illuminance is low.
Over Alert
If any of the measured values, X, Y or Z exceeds 99,990, the display will show
a blinking “OL”.
5-3 Taking Color Difference Measurement
The meter display calculated values that are based on to measure the
difference between the sample color and a target color.
5-3-1 Using a measurement result as the target
1. Measure the color of a source as described under step 5-2.