International Light Technologies ILT10C User manual

ILT10C User's
Manual
Professional Light Meter
Please read this user's manual thoroughly before using this unit
and keep it properly for your future reference.

Contents
1. Safety.......................................................................... 1
2. Application ................................................................. 2
3. Features ...................................................................... 3
4. Specifications ............................................................. 4
5. Meter Description....................................................... 5
6. LCD Display Description........................................... 6
7. Operation Instruction.................................................. 7
8. Notes........................................................................... 9
9. Accessories................................................................. 9

1
1. Safety
Read the following safety information carefully before attempting
to operate or service the meter.
Use the meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.
◆Environment conditions:
RH≤90％（Non-Condensation）
Operating Temperature: -20℃～60℃
Storage Temperature: -20℃～60℃
◆Maintenance
Repairs or servicing not covered in this manual should only be
performed by qualified personnel.
Wipe the unit with a dry soft cloth. Do not use abrasives or
solvents on this instrument.
◆Safety Symbol
Comply with EMC

2
2. Application
This Light Meter is designed to meet the measurement
requirements of safety Engineers, Health, Industrial safety offices
and light quality control in various environments like factory,
school, construction, etc.

3
3. Features
Measuring range: 0Lux～400kLux/0Fc～40kFc
(Measurement repeatability)
Analog bar-graph indication
High accuracy
Data hold
Meter corrected for spectral relative efficiency
Automatically revise parameters for un-standard illumination
Short rise and fall times
Selectable measuring units: Lux or Fc
Meter automatically shuts down after approx. 15 minutes of
inactivity
MAX/MIN record
Large LCD display
Peak-hold
4-level selectable measurement ranges
Automatic measurement
Low battery indication

4
4. Specifications
Display
4 digits LCD display
Measuring range
0 Lux～400k Lux；0Fc～40k Fc
Spectral response
CIE photopic (CIE human eye response
curve)
Over range indication
LCD displays "-OL-" or "-LO-"
Symbols show as OVER” or “UNDER
Spectral accuracy
CIE Vλ function(f1’≦6%,f2’≦2%)
Accuracy
±3% rdg±0.5%f.s.(<10,000Lux);
±4% rdg±10dgts.(>10,000Lux)
Sampling rate
2 times per second
Photo detector
Silicon photo-diode with spectral response
filter
Power supply
One 9V battery, 006P, NEDA1604 or
IEC6F22
Photo detector Lead Length
approx. 2.5m
Battery life
at least 30 hours
Operating conditions
-20℃～60℃; 10％RH～90％RH
Storage conditions
-20℃～60℃; 10％RH～75％RH
Dimension(L*W*H)
158*62*32mm
Weight
258g

5
5. Meter Description
①Photo Sensor ②LCD display
③Lux/Fc selection key ④MAX/MIN key
⑤Range level selection key ⑥Backlight/HOLD key
⑦Power ON/OFF key ⑧Battery Cover

6
6. LCD Display Description
①Low range indication icon ②MAX icon
③MIN icon ④Over range indication icon
⑤Range indication ⑥Analog bar-graph indication
⑦Lux/Fc record ⑧Low battery icon
⑨Auto range icon ⑩Hold icon
⑪LUX icon ⑫Fc icon
⑬Auto power off icon

7
7. Operation Instruction
(1) Power ON/OFF Function: press"" key for one second,
the meter will be on; keep pressing this key for approx. 3 seconds,
the meter will be off.
(2) Backlight
After turning the meter on, momentarily press " " key, the
backlit will be on/off, it will automatically turn off after approx.
30 seconds of inactivity.
(3) Data Hold
Press " " key one time, "HOLD" icon will appear on the LCD,
which indicates the data is freezed. To release the held reading,
press the key again.
(4) Fc/Lux Selection
Press the " " key to select Fc units or Lux units.
(5) MAX/MIN
In the measurement mode, press " " key one time, "MAX"
icon will appear on the LCD to view the current MAX reading,

8
press the button again, "MIN" icon will appear to view the current
MIN reading. Press this key once more to exit the MAX/MIN
mode.
Press " " key for 3 seconds above, re-start to calculate the
maximum, minimum.
(6) Range selection
Press" " key to select the range level, there are four
selectable levels:0～400Lux
400～4kLux;
4k～40kLux
40k～400kLux;
AUTO:0～400kLux;

9
8. Notes
(1) When the low battery icon " " appears, replace the meter's
battery.
(2) Check whether the photo detector is well connected with the
photo detector socket before measurement.
(3) When manual range is needed, press "LEVEL" key to select
the desired range, if "UNDER" or "OVER" icon appears on the
LCD, which indicates incorrect range and need to select again.
(4) Remove the battery when the meter is to be stored for long
periods of time to avoid battery leakage.
9. Accessories
①User's manual
②Photo detector
③9V battery