Harbor Freight Tools 91194 Operating Instructions Download Page 4

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 the Battery 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

Summary of Contents for 91194

Page 1: ...Web site at http www harborfreight com Copyright 2004 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools For technical questions please call 1 800 444 3353 ...

Page 2: ...e 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 PRECAUTIO...

Page 3: ...nd 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 DISP...

Page 4: ...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 the Battery Compartment Door lo...

Page 5: ...TRAL SENSITIVITY CHARACTERISTICS RELATIVE SENSITIVITY 100 80 60 40 20 0 400 500 600 700 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...

Reviews: