Omega Marine Radio HHLM 1MV User Manual

OMEGA  
HHLM-1MV  
Light Transducer  
 
INTRODUCTION  
This instrument is a portable easy use, compact-sized light transducer  
designed for simple one hand operation. Provides lux unit measurements.  
SAFETY INFORMATION  
It is recommended that you read the safety and operation instructions before  
using the lightmeter.  
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 using only a damp cloth.  
• Cover sensor head when not in use to extend silicon photodiode sensor life.  
The  
explanation in this manual.  
 
symbol on the instrument indicates that the operator must refer to an  
1
SPECIFICATIONS  
GENERAL  
Low battery indication: the "Red LED" is displayed when the battery voltage  
drops below the operating level.  
Operating Environment: 0°C to 50°C at < 70% relative humidity.  
Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from  
meter.  
Accuracy: Stated accuracy at 23°C ± 5°C, <70% relative humidity.  
Battery: 4 pcs 1.5V (AAA size).  
Battery Life: 200 hours typical.  
Dimensions: 170mm(H) x 44mm(W) x 40mm(D).  
Weight: 200g including batteries.  
2
 
ELECTRICAL  
Photometric Formulas:  
10.764·footcandles=lux (lumens/meter2)  
0.0929·lux=footcandles (lumens/foot2)  
Rangescale:DMM to 200.0mV range  
¸10(20lux), x1(200lux)  
x10(2000lux), x100(20000lux)  
x1000(200000lux)  
Resolution: 0.01lux  
Spectral response: CIE photopic  
The CIE photopic curve is an international standard for 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)  
3
 
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)  
OPERATING INSTRUCTIONS  
Push buttons  
Range Select Button  
Press "RANGE" button to select the desired lux range. Each time you press  
"RANGE" button, the range (and the input range annunciator) incremants,  
and a new value is displayed.  
4
 
OPERATION  
1. Plug the light transducer test leads into the Vdc input jack and common or  
ground input jack on the DMM. Observe polarity.  
2. Set the DMM to the 200mV range only.  
3. Set the light transducer power switch to the desired range (use range button  
select 20lux, 200lux, 2000lux, 20000lux) or only 200000lux range.  
4. Remove the sensor head cover.  
5. Hold the sensor head steady and make certain that the light source completely  
fills the cosine correction dome.  
6. 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.  
7. DMM reading multiplies light transducer illuminance value. If magnitude of lux  
is not known, press light transducer RANGE button to the highest range and  
reduce until a satisfactory reading is obtained.  
8. Cover sensor head to extend sensor life.  
5
 
SPECIAL CONSIDERATIONS  
• Keep the plastic domed cosine corrector clean and free of scratches. It may  
be cleaned with a soft cloth and isopropyl alcohol.  
• When light is received from many directions simultaneously, take special care  
to avoid reflections or shadowing the sensor with your body.  
• For best accuracy, repeat the measurement several times to ensure that the  
light source has remained stable.  
• Avoid flexing the cable excessively at either 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 surface varies as the cosine of the angle  
of incidence. The angle of incidence q is the angle between the normal to the  
surface and the direction of the incident light. The inverse-square low and the  
cosine law can be combined as E=(I cos q )/d2.  
6
 
Cleaning  
Periodically wipe the case with a damp cloth and detergent, do not use abrasives  
or solvents.  
CIE Photopic Curve  
Wavelength in Nanometers  
7
 
8
 
WARRANTY  
OMEGA warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a  
period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the  
normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA's customers  
receive maximum coverage on each product. If the unit should malfunction, it must be returned to the factory for  
evaluation. OMEGA's Customer Service Department will issue an Authorized Return (AR) number immediately  
upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or  
replaced at no charge. However, this WARRANTY is VOID if the unit shows evidence of having been tampered with  
or shows evidence of being damaged as a result of excessive corrosion; or current, heat moisture or vibration;  
improper specification;misapplication;misuse or other operating conditions outside of OMEGA's control.Components  
which wear or which are damaged by misuse are not warranted. This includes contact points, fuses, and triacs.  
OMEGA is glad to offer suggestions on the of 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 LIABILITY:The remedies of purchaser set forth herein are exclusive and the total liability of  
OMEGA with respect to this order, whether based on contract warranty, negligence, indemnification, strict  
liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In  
no event shall OMEGA be liable for consequential, incidental or special damages.  
Every precaution for accuracy has been taken in the preparation of this manual; however, OMEGA ENGINEERING,  
INC.neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages  
that result from the use of the products in accordance with the information contained in the manual.  
SPECIAL CONDITION: Should this equipment be used in or with any nuclear installation or activity, purchaser will  
indemnity OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the  
equipment in such a manner.  
 
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is  
constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE  
mark to every appropriate device upon certification.  
The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no  
liability for any errors it contains, and reserves the right to alter specifications without notice.  
WARNING: These products are not designed for use in, and should not be used for, patient connected application.  
RETURN REQUESTS / INQUIRIES  
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.BEFORE RETURNING  
ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM  
OMEGA'S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned  
AR number should then be marked on the outside of the return package and on any correspondence.  
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in  
transit.  
FOR WARRANTY RETURNS, please have the following FOR NON-WARRANTY REPAIRS, consult OMEGA for  
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  
current repair charges. Have the following information  
available BEFORE contacting OMEGA:  
1. P.O. number to cover the COST of the repair.  
2. Model and serial number of product , and  
3. Repair instructions and/or specific problems relative  
to the product.  
3. Repair instructions and/or specific problems relative  
to the product.  
OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This  
affords our customers the latest in technology and engineering. OMEGA is a registered trademark of OMEGA  
ENGINEERING, INC. © Copyright 1999 OMEGA ENGINEERING, INC. All rights reserved. This document may not  
be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable from, in  
whole or in part, without prior written consent of OMEGA ENGINEERING, INC.  
 
Whe re Do I Find Eve rything I Ne e d for  
Proc e ss Me a sure m e nt a nd Control?  
OMEGA...Of Course !  
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