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Wavelengh
CIE photopic
Photopic
(nm)
luminous effi-
lumen/watt
ciency
conversion
coefficient
V
380
0.00004
390
0.00012
400
0.00040
410
0.00121
420
0.00400
430
0.01160
440
0.02300
450
0.03800
460
0.06000
470
0.09098
480
0.13902
490
0.20802
500
0.32300
510
0.50300
520
0.71000
530
0.86200
540
0.95400
550
0.99495
555
1.00000
560
0.99500
570
0.95200
580
0.87000
590
0.75700
600
0.63100
610
0.50300
620
0.38100
630
0.26500
640
0.17500
650
0.10700
660
0.06100
670
0.03200
680
0.01700
690
0.00821
700
0.00410
710
0.00209
720
0.00105
730
0.00052
740
0.00025
750
0.00012
760
0.00006
4.3 Cleaning
If contamination is found, clean with a damp soft cloth and if
necessary a mild detergent or alcohol. Do not use abrasives,
abrasive solvents, or detergents which can cause damage to the
unit. If a mild detergent is used, the unit should subsequently
be thoroughly cleaned with a water dampened soft cloth. After
cleaning, dry and allow to remain in a dry environment for 2 hours
before use.
4.4 Repair & Service
There are no user serviceable parts in this unit other than those
that may be described in section 4. Return to Martindale Electric
if faulty. Our service department will quote promptly to repair any
fault that occurs outside the guarantee period.
Before the unit is returned, please ensure that you have checked
the unit and batteries.
4.5 Storage Conditions
The instrument should be kept in warm dry conditions away from
direct sources of heat or sunlight, and in such a manner as to
preserve the working life of the unit. It is strongly advised that the
unit is not kept in a tool box where other tools may damage it.
factor
0.027
0.082
0.270
0.826
2.73
7.92
15.71
25.95
40.98
62.14
94.95
142.1
220.6
343.5
484.9
588.7
651.6
679.6
683.0
679.6
650.2
594.2
517.0
431.0
343.5
260.2
181.0
119.5
73.08
41.66
21.86
11.61
5.61
2.80
1.43
0.715
0.355
0.170
0.082
0.041
11
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4. MAINTENANCE
4.1 Battery Replacement
The battery compartment is on the rear of the unit. To gain access,
undo the retaining screw and lift the cover away from the back of
the unit.
Replace with 2 new AA batteries (IEC LR6, NEDA 15A), observing
correct polarity. Replace the battery cover.
Note: Do not mix old and new batteries.
4.2 Calibration
To maintain the integrity of measurements made using your
instrument, Martindale Electric recommends that it is returned
at least once a year to an approved Calibration Laboratory for
recalibration and certification.
Martindale Electric is pleased to offer you this service.
Please contact our Service Department for details.
Email: service@martindale-electric.co.uk
Tel: 01923 650660
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5. WARRANTY AND LIMITATION OF LIABILITY
This Martindale product is warranted to be free from defects in
material and workmanship under normal use and service. The
warranty period is 2 years and begins on the date of receipt by the
end user. This warranty extends only to the original buyer or end-
user customer, and does not apply to fuses, disposable batteries,
test leads or to any product which, in Martindale's opinion, has been
misused, altered, neglected, contaminated, or damaged by accident or
abnormal conditions of operation, handling or storage.
Martindale authorised resellers shall extend this warranty on new and
unused products to end-user customers only but have no authority to
extend a greater or different warranty on behalf of Martindale.
Martindale's warranty obligation is limited, at Martindale's option, to
refund of the purchase price, free of charge repair, or replacement of
a defective product which is returned to Martindale within the warranty
period.
This warranty is the buyer's sole and exclusive remedy and is in lieu
of all other warranties, expressed or implied, including but not limited
to any implied warranty of merchantability or fitness for a particular
purpose. Martindale shall not be liable for any special, indirect,
incidental or consequential damages or losses, including loss of data,
arising from any cause or theory.
Since some jurisdictions do not allow limitation of the term of
an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty
may not apply to every buyer. If any part of any provision of this
warranty is held invalid or unenforceable by a court or other decision-
maker of competent jurisdiction, such holding will not affect the validity
or enforceability of any other provision or other part of that provision.
Nothing in this statement reduces your statutory rights.
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