Triplett LT65 Manuel utilisateur

User Manual

LT65

Digital Light Meter

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Introduction

Congratulations on your purchase of the Triplett LT65 Digital Light Meter.

The LT65 Digital Light meter is designed for Light intensity measurement

projects, quality control, health control and measuring Light intensity of

various kind of environments, like factories, parking lots, schools, offices,

transportation lines, schools and many other environments.

Safety

Do not operate the meter in environments where the following are

present: explosive gases (or materials), combustible gases (or

materials), steam, or dust.

Please replace the battery immediately when the low battery symbol

appears on the LCD.

Do not touch the meter’s circuit board for any reason; static

electricity or contamination could damage the sensitive

components.

This instrument was designed for pollution

degree 2. Operation Altitude: Up to 2000m

(7000’).

Description

1.LCD Display

2.Function Buttons

3.Light Sensor

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Display Overview

：Maximum display symbol.

：Minimum display symbol.

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：Low battery symbol, which shows the power is low

battery. Please change a new battery.

：Data hold symbol

TIME ：Time display, format: hour : minute

Function Buttons



：Long press the button "TIME" for 2

seconds to enter the time setting page. Short press the

button "TIME" to select the value of "hour" and "minutes" to

be set. Press the button "HOLD" to change the value. Long

press the button to exit the time setting.



：Maximum, Minimum function option, pressing

this button for 3 seconds exits this function., REC、Lux/Fc、LEVEL’

also will also exit this function.

：Displsy HOLD , LCD will show HOLD symbol.

TIME HOLD

MAX

MIN LEVEL Lux

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：Range selection function. Range selection

function will disable under the “REC”function. Choose measurement

range before enter “REC”function.

：Backlight Function

：Changes UNITS Fc/Lux

1FC=10.76Lux,1KLux=1000Lux,1KFC=1000FC

：Power ON / OFF Button

To Power ON –Press and Hold this button for more than 1 second

until LCD screen full of display.

To Power OFF –Press and Hold this button for more than 3 seconds

until LCD screen have no any display.

Operation

1. POWER ON: Press the POWER button for more than 1 second until LCD

displays..

2. POWER OFF: Press the POWER button for more than 3 seconds until LCD

extinguishes.

3. Choose Lux or FC unit：Transfermeasurement range switch can exchange

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Lux or FC unit.

4. Transfer light probe cover and make it vertical to aligned light source.

5. Read the measurement data from LCD screen.

6. Over range: If the instrument only display“OL”, means the signal input is too

strong, should choose a higher range. Measurement range will display below

the LCD screen.

LUX :400 -> 4K -> 40k -> 400k; FC: 40 -> 400-> 4k -> 40k.

7. Data holding function: Press HOLD button and choose data holding function.

8. Maximum and minimum function: Press MAX/MIN button choose the

maximum reading and minimum reading function. Press MAX/ MIN or （

LEVEL、LUX/FC、REC）for 3 seconds exit this function.

9. USB function: connect with the computer’s USB interface.

10. Backlight function: Press Backlight button to start up the function, press it

again to exit the function.

11. When all measurement are done, please restore the light probe cover and

turn off the instrument.

Battery Replacement

When appears on the LCD, the 3*1.5V AA battery must be replaced.

1. Disconnect the sensor.

2. Remove the meter’s rubber protective jacket

3. Use a Phillips screwdriver to open the rear battery compartment

4. Replace the 3*1.5V AA battery

5. Close the battery compartment and replace the meter’s protective jacket

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Warranty Information

Triplett / Jewell Instruments extends the following warranty to the original purchaser of

these goods for use. Triplett warrants to the original purchaser for use that the products sold

by it will be free from defects in workmanship and material for a period of (1) one year from

the date of purchase. This warranty does not apply to any of our products which have been

repaired or altered by unauthorized persons in any way or purchased from unauthorized

distributors so as, in our sole judgment, to injure their stability or reliability, or which have

been subject to misuse, abuse, misapplication, negligence, accident or which have had the

serial numbers altered, defaced, or removed. Accessories, including batteries are not

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Specifications

Display

4 Digit LCD Display

Measurement

Range

0 to 400,000 Lux; 0 to 40,000 Fc

Notices

1 Fc = 10.76 Lux; 1kLux = 1000 Lux; 1k Fc

= 1000 Fc

Overload Display

LCD displays "OL"

Spectral

Response

CIE Appropriate Light (CIE eye response

curve)

Spectral

Precision

CIE VVfunction f1'% less than or equal to

Cosine Response

f2' less than or equal to 2%

Precision

±3% reading ±0.5%FS (<10,000 Lux)

±4% reading ±10d (>10,000 Lux)

Light probe

Silicon light diode and a spectral

response filter

Power

(3) 1.5V batteries

Light Probe

Length

59” (150cm)

Light Probe

Volume

4.5” x 2.4” x 0.8”( 115 x 60 x 20mm)

Dimensions

6.4” x 2.4 x 1.2”(162 x 62 x 30mm)

Weight

9.2 oz (260g)

Accessories

Canvas bag, User Manual, Batteries,

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