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3.0 Introduction
The Palintest Photometer 7500
is a direct-reading, waterproof photometer for
determining key water quality parameters for
drinking water, wastewater and process water
samples. Designed for both portable and
laboratory use, the Photometer 7500 should
always be used with genuine Palintest reagents
for optimal performance.
The fundamental operating technique applied to
the Photometer 7500 is based on the principles
of optical absorbance and scattering
of visible light.
Optical absorbance techniques are based on the use
of Palintest (spectro)photometric reagents, creating
visible colours with specific analytes upon reaction.
The intensity of colour produced is measured with
the Photometer 7500 and the data compared to
the stored calibration data to deliver the final result.
Optical scattering techniques produce small
particles to scatter the source beam, the amount
of scatter providing a result for the concentration
of parameter under test.
The Photometer 7500 is provided with
programmed methods for a comprehensive range
of water quality parameters. Upon choosing a test
the instrument automatically selects the required
parameters for accurate analysis including
wavelength and reaction time. Upon completion
of the test optional follow-on tests are available
and results can be converted to alternative units
of expression e.g. mg/l to ppm, N or NH
The Photometer 7500 offers a choice of either
mains power via the USB port or using three
1.5V 'AA' batteries (supplied).
The Photometer 7500 is supported with a two
year warranty and a full range of service,
calibration and technical support. Support
resources are available at www.palintest.com
relating to both products and applications.
3.1 Quick Start
Photometer 7500 Layout
Adaptive Cuvette Holder
(do not insert finger!)
LCD screen
with backlight
Numerical keys
for Hotkey
operation and
text entry
Photometer 7500 Interface
The LCD screen features a selectable backlight
with the screen separated into four clear, easy
to read zones:
.
3
Photometer 7500
USB
Light
Port
Cap
Navigation
Keys
3
On/
Off
1
2
3
4
9 9
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