Harbor Freight Tools 91194 Manuel utilisateur

LUX LIGHT METER

MODEL 91194

OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http//www.harborfreight.com

manual or any artwork contained herein may be reproduced in any shape or form

without the express written consent of Harbor FreightTools.

For technical questions, please call 1-800-444-3353.

Item Description

Electrical Requirements One 9-Volt Battery (Not Included)

Display 3-1/2 Digit with a Maximum Display Reading of 1999

Measuring Range 1 ~ 2,000, 20,000, 50,000 Lux

Repeatability ±2%

Overrange Display The Highest Display Digit “1”

Accuracy ±4% Reading ±0.5% Full-Scale

±4% Reading ±5 digit (10,000 -50,000 Lux)

±5% Reading ±10 digit (50,000+ Lux)

Measuring Rate 2.0 times/sec.

Photo Detector One Silicon Photo Diode

Temperature Characteristic ±0.1%/°C

Accessories Carrying Case

Weight 0.7 Pounds

PRODUCT SPECIFICATIONS

SAVE THIS MANUAL

You will need this manual for the safety warnings and precautions, assembly,

operating, inspection, maintenance and cleaning procedures, parts list and assembly

diagram. Keep your invoice with this manual. Write the invoice number on the inside of

the front cover. Keep this manual and invoice in a safe and dry place for future refer-

ence.

UNPACKING

When unpacking, check to make sure all the parts shown in this manual and the

carrying case are included. If any parts are missing or broken, please call Harbor Freight

Tools at the number shown on the cover of this manual as soon as possible.

SKU 91194 PAGE 2

GENERAL SAFETY WARNINGS AND PRECAUTIONS

1. Check for damaged parts. Before using this product, carefully check that it will

operate properly and perform its intended function. Check for damaged parts and

any other conditions that may affect the operation of this product.

NOTE: Individual replacement parts are not available for this product.

2. Maintain this product with care. Keepthisproductclean and drywhen in use and

during storage for better product performance. Service and maintenance should

be performed regularly by a qualified technician. When in use, the Photo Detector

(5) (white sphere) must be kept clean.

SKU 91194 PAGE 3

3. Use the right product for the job. There are certain applications for which this

product was designed. Do not modify this product, and do not use this product for

a purpose for which it was not intended.

4. Maintain labels and nameplates on this product. These carry important infor-

mation. If unreadable or missing, contact Harbor Freight Tools for a replacement.

5. Do not use this product in excessive heat and humidity conditions.

6. Do not allow children to handle this product. This product is constructed with

small parts that may pose a serious choking hazard if swallowed.

7. WARNING! The warnings, precautions, and instructions discussed in this manual

cannot cover all possible conditions and situations that may occur. The operator

must understand that common sense and caution are factors, which cannot be built

into this product, but must be supplied by the operator.

OPERATING INSTRUCTIONS

NOTE: For additional references to the parts listed in the following pages refer to

Figure A, below.

POWER SWITCH (2)

LCD DISPLAY (1)

RANGE SELECTION SWITCH (3)

DATA HOLD SWITCH (4)

PHOTO DETECTOR (5)

FIGURE A

1. Press the Power Switch (2) to turn the Light Meter “ON”. Press the Power Switch

again to turn the Light Meter “OFF”. (See Figure A.)

2. Press the Range Selection Switch (3) to select between the ranges of 1 ~ 2,000/

20,000/50,000(200,000) Lux. At the same time, the LCD Display (1) will indicate

the value by which to multiply to receive the correct value.(See Figure A.)

SKU 91194 PAGE 4

3. Face the Photo Detector (5) in a horizontal position toward the light source.

(See Figure A, previous page.)

4. Read the number on the LCD Display (1). If the LCD Display only shows “1”, the

input signal is too strong and a higher measuring range should be selected.

(See Figure A.)

5. Press the Data Hold Switch (4) and “H” will illuminate on the LCD Display (1). The

most recent value will continue to show on the LCD until the Power Switch (2) is

pressed or the Data Hold Switch is pressed again. (See Figure A.)

6. After completing the measurement, make sure the Light Meter is turned “OFF” and

the Photo Detector (5) is covered. Then, store the unit in its Carrying Case.

(See Figure A.)

TO REPLACE THE BATTERY

When the 9 volt Battery (not included) becomes low, the letters “BT”

will illuminate on the LCD Display (1). To replace the Battery, remove the

Screw on theBattery Compartment Door located on the back of the Light

Meter. Then remove the Battery Compartment Door by sliding it down. Re-

move the old Battery. Install a new 9 volt Battery. Then, replace the Battery

Compartment Door and the Screw. (See Figure B.)

BATTERY

COMPARTMENT

DOOR

FIGURE B

REAR VIEW

SCREW

SKU 91194 PAGE 5

SPECTRAL SENSITIVITY

Please Note:

While the manufacturer has made every effort to ensure this is a

reliable and accurate tool, neither Harbor Freight Tools nor the manu-

facturer can be held responsible for any errors in lighting placement/

adjustment; the costs of any wasted film, time, etc.; or any other costs

incidental to any errors in measurement.

SPECTRAL SENSITIVITY CHARACTERISTICS

RELATIVE

SENSITIVITY

(%)

100

0400 500 600 700

LIGHT

METER

-V(r)

FIGURE C

INSPECTION, MAINTENANCE, AND CLEANING

1. Before each use, inspect the general condition of the Light Meter. Check for bro-

ken, loose or missing parts; low Battery; any condition that may affect the proper

operation of the product. If a problem occurs, have the problem corrected before

further use. Do not use damaged equipment.

2. Do not use abrasives or solvents to clean this product.

NOTE: No individual replacement parts are available for this product.

WAVELENGTH (nm)

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