MTP MTP-1014 User manual
MTP
INSTRUCTION MANUAL
Digital Light Meter
Model MTP-1014
MTP Instruments
Table of Contents
Introduction
1
Features
Page 1
2
Specifications
Page 1
3
Panel description
Page 2
4
Operating instructions
Page 3
Recommended illumination
Page 4
5
Battery replacement
Page 5
Introduction
Congratulations on your purchase of the MTP-1014 digital light meter. If used correctly and in
accordance with this instruction manual, this meter will provide years of reliable service.
1. Features
Easy to use, pocket size and light weight
3 ½ digital LCD display with lux, fc, LOBAT, MAX indication
Accurately displays light level in terms of Foot Candles (fc) or Lux over a wide range
Measures from 0 to 40000 lux/fc in four ranges with resolution of 0.1 lux/fc
Auto ranging
Max Hold
Light sensitive backlight LCD
Auto Power Off function
2. Specifications
Display : LCD display with 1999 counts
Polarity : Automatic, negative (-) polarity indication
Over-range: "OV"symbol indication
Low battery indication: The "BAT" icon is displayed when the battery voltage drops
below the operating level
Measurement rate: 2.5 times per second, nominal
Storage temperature: -10ºC to 60ºC (14ºF to 140ºF) at <80% relative humidity
Operating temperature: 0 to 40ºC (32ºF to 104ºF)
Operating humidity: 0 to 80% relative humidity
Auto power off: The meter automatically shuts down after approx. 17
minutes of inactivity
Power: One standard 9V battery
Dimensions : 157 (H) x 54 (W) x 34 (D)
Weight : 170g
Acessories: One 9V battery, one instruction manual
Warranty: One year warranty
Measuring range: 200, 2000, 20000, 40000 lux/fc (1fc = 10.76 lux)
Accuracy: ± 5% rdg ± 10 dgts (<10000 lux/fc)
Accuracy: ± 10% rdg ± 10 dgts (>10000 lux/fc)
(20000 lux range reading x 10, 40000 lux range reading x 100)
Over rate display: "OL"is displayed
(calibrated to standard incandescent lamp at colour
temperature 2856ºK)
Repeatability: ± 2%
Temperature characteristics: ± 0.1% / ºC
Photodetector: One silicone photodiode with filter
1
3. Panel description
1. Photodetector
Long life silicon photodiode inside the meter.
2. MAX and lux/fc function button
Press this button briefly, the max reading will be displayed. Pressing it once again will
release the hold function and allow another measurement. Pressing this function button
for 2 seconds will change the display between lux and fc measurement units.
3. Power button
Press this button to turn the meter on or off.
4. LCD backlight control
The meter is sensitive to environment light intensity. If the environment is dark, it will
turn the LCD backlight on automatically. Otherwise, it will turn off the LCD backlight.
5. Auto-ranging
x 10 means the meter is in range 20K lux and the readings should multiplied by 10; x 100
means the meter is in range 40K lux and the readings should be multiplied by 100.
6. LCD display
1999 counts LCD display with lux, fc,
+
MAX indication.
2
4. Operating instructions
1) Press the power button to start normal measurement.
2) Remove the photodetector cap and place the meter towards a light source in a horizontal
position.
3) Read the illuminance value on the LCD display. If the environment is dark, the backlight
will automatically turn on.
4) The measurement range will change automatically with the light intensity. It includes
200.0 lux, 2000 lux, 20 Klux and 40 Klux (4 ranges for lux) or 20.0 fc, 200 fc, 2000 fc,
4000 fc (4 ranges for fc).
5) Press the function button (MAX lux/fc) for about 2 seconds to change the unit between lux
and fc.
6) Press the function button briefly to change to the Max Hold function. Press once again to
release the hold function and allow another measurement.
7) Over-range: if the instrument displays "OL" in LCD display, the input signal is too
strong.
8) Spectral characteristics of sensibility: the photodiode with filter applied to the spectral
sensitivity does meet CIE (International Commission on Illumination) photopia curve V
(λ) as the following chart describes.
100% (Relative Sensitivity) Spectral Sensitivity
V(λ)
Wavelengthnm)
3
10. Recommended Illumination
Location
Lux
Office
Conference, reception room
200 ~ 750
Clerical work
700 ~ 1,500
Typing drafting
1,000 ~ 2,000
Factory
Packing work, entrance passage
150 ~ 300
Visual work at production line
300 ~ 750
Inspection work
750 ~ 1,500
Electronic parts assembly line
1500 ~ 3000
Hotel
Public room, checkroom
100 ~ 200
Reception, cashier
200 ~ 1,000
Store
Indoor stairs, corridor
150 ~ 200
Show window, packing table
750 ~ 1,500
Forefront of show window
1,500 ~ 3,000
Hospital
Sick room, warehouse
100 ~ 200
Medical examination room
300 ~ 750
Operating room/emergency treatment
750 ~ 1,500
School
Auditorium, indoor gymnasium
100 ~ 300
Class room
200 ~ 750
Laboratory, library, drafting room
500 ~ 1,500
5. Battery replacement
If the battery icon
+
appears on the LCD display, it indicates that the battery should be
replaced. Open the battery case and replace the expired battery with a new battery ( 1 x 9V
battery).
4
MTP Warranty
MTP Instruments warrants this instrument to be free of defects in parts and workmanship for
one (1) year from date of shipment. This warranty does not apply to defects resulting from
action of the user such as misuse, improper wiring, operation outside of specifications, improper
maintenance or repair, or unauthorized modifications. MTP Instruments specifically disclaims
any implied warranties or merchantability or fitness for a specific purpose and will not be held
liable for any direct, indirect, incidental or consequential damages. MTP Instruments total
liability is limited to repair or replacement of the product.
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