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4

OPERATING INSTRUCTIONS

Push buttons
Back-Light ( >2sec) and Peak-Hold Switch :

Press this button to toggle in and out of the PEAK-HOLD mode. The "

 P

   

MAX

" annunciator are displayed.(Response Time:>50mS)
Press this button for two seconds to turn the Back-Light on. As this also activates
the PEAK-HOLD mode, briefly press the button to return to normal display. To
turn the Back-Light off press again for two seconds.

Range Select Button

Press "RANGE" button to select the desired lux or fc range. Each time you press
"RANGE" button, the range (and the input range annunciator) incremants, and
a new value is displayed.

HOLD (DATA-HOLD) Button

Press "HOLD" button to toggle in and out of the DATA-HOLD mode. In the DATA-
HOLD mode, the " 

H

 " annunciator is displayed and the last reading is held on the

display.

Summary of Contents for HHLM-2

Page 1: ...OMEGA HHLM 2 Digital Lightmeter ...

Page 2: ... info omega com e mail info omega com Servicing Europe Benelux Postbus 8034 1180 LA Amstelveen The Netherlands Tel 31 20 6418405 FAX 31 20 6434643 Toll Free in Benelux 06 0993344 e mail nl omega com Czech Republic ul Rude armady 1868 733 01 Karvina Hranice Czech Repubic Tel 420 69 6311627 FAX 420 69 6311114 e mail czech omega com France 9 rue Denis Papin 78190 Trappes Tel 33 130 621 400 FAX 33 130...

Page 3: ...ou read the safety and operation instructions before using the lightmeter 1 WARNING To avoid electric shock do not operate this product in wet or damp conditions To avoid injury or fire hazard do not operate this product in an explosive atmosphere To avoid eye injury wear eye protection if there is a possibility of exposure to high intensity rays Do not immerse in liquids clean the sensor head usi...

Page 4: ...vironment 0 C to 50 C 32 F to 122 F at 70 relative humidity Storage Temperature 20 C to 60 C 4 F to 140 F 0 to 80 R H with battery removed from meter Accuracy Stated accuracy at 23 C 5 C 73 F 9 F 70 relative humidity Analog Output 0 1mV counts Battery 4 pcs 1 5V AAA size Battery Life 200 hours typical Dimensions 170mm H x 44mm W x 40mm D Weight 220g 7 76oz including batteries The symbol on the ins...

Page 5: ...the color response of the average human eye Acceptance angle 2 2 cosine corrected 150 Total accuracy for CIE standard illuminant A 2856K 3 rdg 10dgts CIE standard illuminant A can be realised by means of CIE standard source A which is defined as A gas filled tungsten filament lamp operating at a correlated colour temperature of 2856K Temperature Coefficient 0 1x specified accuracy C 18 C or 28 C 0...

Page 6: ...LD mode briefly press the button to return to normal display To turn the Back Light off press again for two seconds Range Select Button Press RANGE button to select the desired lux or fc range Each time you press RANGE button the range and the input range annunciator incremants and a new value is displayed HOLD DATA HOLD Button Press HOLD button to toggle in and out of the DATA HOLD mode In the DA...

Page 7: ...correction dome 4 Move away from the sensor head to avoid shadowing it The sensor head has a 1 5 meter cable to allow separation between the observer and the measure ment location 5 Read the illuminance value from the display If magnitude of lux or fc is not known press RANGE button to the highest range and reduce until a satisfac tory reading is obtained 6 Cover sensor head to extend sensor life ...

Page 8: ...ther end of the cable The Inverse square Law The law stating that the illuminance E at a point on a surface varies directly with the intensity I of a point source and inversely as the square of the distance d between the source and the point If the surface at the point is normal to the direction of the incident light the law is expressed by E I d2 Cosine Law The law that the illuminance on any sur...

Page 9: ...leaning Periodically wipe the case with a damp cloth and detergent do not use abrasives or solvents CIE Photopic Curve Luminous Efficiency Coefficient Lumen Watt Conversion Factor Wavelength in Nanometers ...

Page 10: ... 0 2080 142 0 500 0 3230 220 0 510 0 5030 343 0 520 0 7100 484 0 530 0 8620 588 0 540 0 9540 650 0 550 0 9950 679 0 555 1 0000 683 0 560 0 9950 679 0 570 0 9520 649 0 580 0 8700 593 0 590 0 7570 516 0 600 0 6310 430 0 610 0 5030 343 0 620 0 3810 260 0 630 0 2650 181 0 640 0 1750 119 0 650 0 1070 73 0 660 0 0610 41 4 670 0 0320 21 8 680 0 0170 11 6 690 0 0082 5 59 700 0 0041 2 78 710 0 0021 1 43 72...

Page 11: ... use of its various products Nevertheless OMEGA only warrants that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABI...

Page 12: ...pondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have the following information available BEFORE contacting OMEGA 1 P O number under which the product was PURCHASED 2 Model and serial number of the product under warranty and 3 Repair instructions and or specific problems relative to the prod...

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