Hanna Instruments HI 97500 User manual

Instruction Manual
HI 97500
Portable Lux Meter
www.hannainst.com
WARRANTY
All Hanna Instruments meters are warranted for two years against
defects in workmanship and materials when used for their intended
purpose and maintained according to instructions. Sensors and probes
are warranted for a period of six months. This warranty is limited to
repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenance are not covered.
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of purchase,
serial number and the nature of the failure. If the repair is not covered by
the warranty, you will be notified of the charges incurred. If the instrument
is to be returned to Hanna Instruments, first obtain a Returned Goods
Authorization Number from the Customer Service department and then
send it with shipment costs prepaid. When shipping any instrument, make
sure it is properly packaged for complete protection.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.
Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the necessary information
for the correct operation of the meter. Please read it carefully
before using the meter.
If you need additional technical information, do not hesitate
to e-mail us at [email protected].
This instrument is in compliance with directives.
Remove the instrument from the packing material and
examine it carefully to make sure that no damage has
occurred during shipment. If there is any damage, notify
your Dealer.
Each meter is supplied complete with:
• 1 x 9V alkaline battery
• instruction manual.
Note: Conserve all packing material until the instrument
has been observed to function correctly. Any defective
item must be returned in its original packing.
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
HI 97500 is a portable lux meter designed for simplicity of
use in taking rapid light measurements.
The instrument is provided with a light sensor connected to
the meter through a flexible coaxial cable, allowing mea-
surements from a distance without any interference from the
operator.
By simply pressing the RANGE key, it is possible to switch
among three ranges and choose the best resolution accord-
ing to the environment to be tested.
The HI 97500 lux meter is housed in a rugged and water-
resistant body for outdoor use without any problem.
The 9V battery and the automatic shut-off feature guaran-
tee about 200 hours of operation.
FUNCTIONAL DESCRIPTION
1) Liquid Crystal Display (LCD)
2) ON/OFF key, to switch the meter ON and OFF
3) RANGE key, to select the measurement scale
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.

OPERATIONAL GUIDE
Recommendations for Users
Before using this product, make sure that it is entirely suitable for the
environment in which they are used.
Operation of this instrument in residential area could cause unaccept-
able interferences to radio and TV equipments, requiring the operator
to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may
degrade the instrument’s EMC performance.
To avoid electrical shock, do not use this instrument when the voltage
at the measurement surface exceeds 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any measurement in mi-
crowave ovens.
IST97500R2 06/05
• The meter is supplied complete with a 9V battery. Remove
the battery compartment cover on the back of the meter
and install the battery while paying attention to its
polarity.
• Put the light sensor on a stable surface and the meter at
a proper distance to avoid any interference or disturb to the
illumination of the sensor.
• Turn the meter on by pressing the
ON/OFF key.
• Press the RANGE key to select the
proper scale according to the inten-
sity of the light.
• “1. “ on the LCD indicates that it
is necessary to change the measure
scale. Press again the RANGE key.
The decimal point moves through
the display and finally the correct
value is shown.
• Wait for about 1 second for the reading to stabilize.
• After 7 minutes of nonuse, the meter shuts off.
Note: Before taking any measurement, check if the sensor is
clean.
BATTERY REPLACEMENT
When the battery becomes weak,
the meter displays a blinking “V”
on the left side of the LCD.
When the low battery indicator appears only a few hours of
battery life is remaining. A low battery level may also result
in unreliable measurements. It is recommended to replace
the battery immediately.
Unscrew the 3 screws on the back of the meter, remove the
battery cover and replace the battery while paying atten-
tion to its polarity.
Before replacing the cover and tightening the screws, check
that the gasket is in place to ensure a watertight seal.
Battery replacement must only take place in a safe area
and using an alkaline 9V battery.
LIGHT MEASUREMENT
Illuminance is measured by Luxmeters in lux scale, which can
achieve up to 200 Klux for reliable outdoor readings.
For accurate measurements the photosensor has to be cosine
and color corrected.
The cosine correction allows for the effects of light falling on the
cell at oblique angles, while color correction is necessary to
match the spectral sensitivity of the human eye, and it is
defined by the CIE Vλ (“V-lambda”) curve.
The color correction filters usually limit the sensitivity to UV
(ultraviolet) and IR (infrared) radiations.
Note: In many situations the “measuring plane” is either not
specified or nonexistent. In these cases, a height of one
meter above ground or floor level is generally considered
acceptable.
SPECIFICATIONS
Range 0.001 to 1.999 Klux
0.01 to 19.99 Klux
0.1 to 199.9 Klux
Resolution 0.001 Klux
0.01 Klux
0.1 Klux
Accuracy ±6% of reading ±2 digits
Calibration factory calibrated
Light Sensor human-eye-response silicon photodiode
with 1.5m coaxial cable (fixed)
Battery Type 1 x 9V alkaline
Battery Life approx. 200 hours of continuous use
Auto-off after 7 minutes of non-use
Environment 0 to 50°C (32 to 122°F); 100% RH
Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x 1.8")
Weight 180 g (6.3 oz.)