TES-1335 INSTRUCTION MANUAL
I
DIGITAL ILLUMINANCE METER
INSTRUCTION
 The digital illuminance meter is a precision instrument
used to measure illuminance (lux, footcandle)in the field.
TES-1335
INSTRUCTION MANUAL
 It is meet CIE photopic spectral response.
 It is fully cosine corrected for the angular incidence of light.
 The illuminance 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 silicon phote diode and spectral response filter.
10
20
30
40
0
Kfc
Klux
lux
fc
TES ELECTRICAL ELECTRONIC CORP
 U.S. Pat. No. Des. 446,135
 U.S. Pat. No. Des. 469,025
II FEATURES
 Light-measuring levels ranging from 0.01 lux ~ 0.1 klux /
0.01 fc ~ 0.01 kfc, repeatedly.
 High accuracy and rapid response.
 Data-hold function for holding measuring values.
 Unit and sign display for easy reading.
 Automatic zeroing.
 Meter corrected for spectral relative efficiency.
 Correction factor need not be manually calculated for nonstandard light sources.
 Short rise and fall times.
 Peak-hold function for tracing the peak signal of light
pulse with least duration 10s and keeping it.
 Capable of selecting measuring mode in lux or fc scale,
alternatively.
 Auto power off 30 minutes.
 Maximum and minimum measurements.
 Relative reading function.
1
III SPECIFICATIONS
IV NAME OF PARTS AND POSITIONS
 Display:3-3/4 digit LCD with high speed 42 segment bargraph.
 Measuring Range:40.00 lux, 400.0 lux, 4000 lux, 40.00
Klux and 400.0 klux / 40.00 fc, 400.0 fc, 4000 fc, 40.00 Kfc.
Note : 1fc=10.76Lux , 1Klux=1000Lux , 1Kfc=1000fc
 Overrange Display:LCD will show “OL” symbol.
 Spectral Response : CIE Photopic. (CIE human eye
response curve).
 Spectral Accuracy : CIE Vλ function f ’1 ≦6%
 Cosine Response : f ’2 ≦2%
 Accuracy:±3﹪rdg ± 0.5﹪ f.s. (±4﹪ rdg±10 dgts as >
10,000 lux/fc range).
10
20
30
40
0
1
Kfc
Klux
3
2
4
(calibrated to standard incandescent lamp at color temperature 2856K).
 Repeatability:±2﹪.
 Temperature Characteristics:±0.1%/℃.
 Sampling Rate : 13.3 times/sec of analong bar-grahp
5
7
6
lux
fc
9
8
indication ; 1.3 times/sec of digital display.
 Photo Detector:One silicon photo diode and spectral
response filter.
Operating
Temperature
& Humidity:

0℃ to 40℃(32℉ to 104℉)& 0% to 80% RH.
 Storage Temperature and Humidity:
-10℃ to 50℃(14℉ to 140℉)& 0% to 70% RH.
 Power Source:6 pcs size AAA battery.
 Battery life ( typical ) :400 hours ( carbon zine ).
 Photo detector Lead Length:150 cm ( approx. ).
 Photo detector Dimensions:92L×60W×29H (mm);
 Meter Dimensions:150L×72W×35H (mm);
 Weight:320g .
 Accessories:Carry case, instruction manual,battery.
2
1. LCD Display:3-3/4 digit displays with a maximum reading
of 3999 , and the indicating signs of measured values, unit
function symbols, and decimal points etc are display.
2. Power Control key:The power switch key turns the
illuminance meter ON or OFF.
3. Range Selector key:It indicates 40.00 lux, 400.0 lux,
4000 lux, 40.00 Klux 400.0 klux/40.00 fc, 400.0 fc, 4000 fc,
40.00 Kfc total 5 range for lux and 4 range for fc.
4. Data-Hold key:Data Hold control key.
5. Peak Hold key : Peak Hold recorder control key.
3
1. As the battery power is not sufficient, LCD will display
"BT"; and, replacement of one new batterie type
6×1.5V is required.
2. After turning off the meter, press the battery cover and
push in the direction of the arrow to open.
3. Disconnect the battery from the instrument and replace
it with a standard 6×1.5V battery and go for the cover.
VII SPECTRAL SENSITIVITY CHARACTERISTIC
 To the detector, the applied photo diode with filters makes
the spectral sensitivity characteristic almost meet C.I.E.
( INTERNATIONAL COMMISSION ON ILLUMINATION )
photopic curve V(λ ) as the following chart described.
1.2
1.2
1
1
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
Wavelength in Nonometers
5
780
760
740
720
700
680
660
640
620
600
580
560
540
520
500
480
460
0
440
0
420
2. Selecting the lux or fc scale:Set the range selection
switch to desired lux or fc range.
3. Remove the photo detector cap and face it perpendicular
to the light source.
4. Read the illuminance nominal from the LCD display.
5. Overange:If the instrument only display "OL" , the
input signal is too strong, and a higher range should be
selected.
6. Data-Hold mode:Press the HOLD key to select DataHold mode. When HOLD mode is selected, the
illuminance meter stops all further measurements.
Press the HOLD key again to exit DATA-HOLD mode.
Then it resumes normal operation.
7. Peak-Hold recorder mode:Press and hold down PEAK
key until display shown the “CAL” letter, then press PEAK
key cycle through P+ and P- recorder mode, and expose
the photo detector to light pulse measuring field. Press
and hold down PEAK key 2 seconds to exit PEAK recorder
mode, then the meter will resume normal operation.
4
VI BATTERY CHECK-UP & REPLACEMENT
400
1. Power-up: Press the power key to turn the meter ON or OFF.
Maximum and Minimum recorder mode : Press MX/MN
key to cycle through Maximum (MX) reading, Minimum
(MN) reading and current reading (MX/MN blink) recorder
mode. Press MX/MN key two seconds to exit this mode.
9. Relative reading mode : Press △ REL key to enter
Relative mode. The display shown zero value and the
current reading will be stored as a zero-in value. Press
again to exit this mode.
10. When the measurement is completed, replace the
photo detector cap and turn the meter off.
Relative Sensitivity (%)
V OPERATING INSTRUCTIONS
8.
380
6. MX/MN key : Maximum and Minimum reading recorder
control key.
7. Lux key:Pressing the Lux key selects taking
measurement of illuminance in lux scale.
8. Relative Reading key : Relative reading control key.
9. fc key:Pressing the fc key selects taking measurement of
illuminance in footcandle scale; and, 1 footcandle=10.76 lux.
10. Photo Detector.
Light Meter
CIE
 HOTEL
VIII MAINTENANCE
1. The white plastic disc on the top of the detector should
be cleaned with a damp cloth when necessary.
2. Do not store the instrument where temperature or
humidity is excessively high.
3. The reference level, as marker on the face plate, is the tip
of the photo detector globe.
4. The calibration interval for the photo detector will vary
according to operational conditions, but generally the
sensitivity decreases in direct proportion to the product of
luminous intensity by the operational time.In order to
maintain the basic accuracy of the instrument,periodic
calibration is recommended.
IX RECOMMENDED ILLUMINATION
1fc = 10.76 Lux
Public room, Cloakroom
Reception
Cashier
100 ~ 200
9 ~ 18
200 ~ 500
750 ~ 1000
18 ~ 47
70 ~ 93
150 ~ 200
750 ~ 1,500
1500 ~ 3,000
14 ~ 18
70~140
140 ~279
100 ~ 200
300 ~ 750
9 ~ 18
28 ~ 70
750 ~ 1,500
70 ~ 140
100 ~ 300
200 ~ 750
500 ~ 1,500
9 ~ 28
18 ~ 70
47 ~ 140
 STORE
Indoors Stairs Corridor
Show window, Packing table
Forefront of show window
 HOSPITAL
Sickroom, Warehouse
Medical Examination room
Operating room
Emergency Treatmet
 SCHOOL
Lux
LOCATIONS
fc
 OFFICE
Conference, Reception room.
Clerical work
Typing drafting
200 ~ 750
700 ~ 1,500
1000 ~ 2,000
18 ~ 70
65 ~ 140
93 ~ 186
Visual work at production line
300 ~ 750
Inspection work
750 ~ 1,500
Electronic parts assembly line 1500 ~ 3,000
Packing work, Entrance
150 ~ 300
passage
28 ~ 70
70 ~ 140
140 ~ 279
14 ~ 28
Auditorium, Indoor Gymnasium
Class room
Laboratory, Library, Drafting,
room
 FACTORY
TES ELECTRICAL ELECTRONIC CORP.
7F, No. 31, Lane 513, Rui Guang Road, Neihu Dist. Taipei.
Taiwan, R. O. C.
Tel : (02) 2799-3660
Fax : 886-2-2799-5099
E-Mail : [email protected]
http://www.tes.com.tw
Dec-2006-3
6
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