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INTRODUCTION
This instrument is a portable easy to use 3½ digit, compact digital lightmeter
designed for simple one hand operation. It provides measurements in lux and fc
units. The meter has a backlit LCD display, PEAK-HOLD (50m pulse light) and
DATA-HOLD features.
THIS MANUAL COVERS MODELS LM90 & LM92
SAFETY INFORMATION
Read the safety and operation instructions before using the lightmeter.
• 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.
SPECIFICATIONS
GENERAL
Display: 3½ digit liquid crystal display (LCD) with maximum reading of 1999
Over range: (OL) is displayed
Low battery indication: the "
below the operating level
2
WARNING
" is displayed when the battery voltage drops
Martindale Electric will carry out routine
calibration (on a chargeable basis) if the
instrument is returned, carriage paid, to
the address on the final page of this
document. Alternatively, a chargeable
collection and return service is available.
Repair & Service
There are no user serviceable parts in
this unit. Return to Martindale Electric
Company Ltd if faulty. Our service
department will promptly quote to repair
any faults that occur outside the
warranty period.
Storage Conditions
The unit should be kept in warm, dry
conditions away from direct sources of
heat or sunlight, with the battery
removed 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.
Warranty
Faults in manufacture and materials are fully guaranteed for 2 years from date of
invoice and will be rectified by us free of charge, provided the unit has not been
tampered with and is returned to us with its housing unopened. Damage due to
dropping, abuse or misuse is not covered by the guarantee. Nothing in these
instructions reduces your statutory rights.
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