GENERAL OPERATING INFORMATION
OVERVIEW
The 2020 Turbidimeter is a portable, microprocessor controlled nephelometer.
A multi-detector optical configuration assures long term stability and minimizes
stray light and color interferences. All readings are determined by the process of
signal averaging over a 5 second period, minimizing fluctuations in readings
attributed to large particles and enabling rapid, repeatable measurements. It has a
sealed keypad. The microprocessor enables auto-ranging over the full range of 0
to 1100 NTU and provides direct digital readout with a resolution of 0.01 NTU
for the lowest range.
The optics feature a tungsten bulb light source with a life expectancy of 800
hours. The light is detected by a silicon photo diode.
The 2020 is supplied with a 9 volt alkaline battery and an AC power adapter.
A RS-232 serial port on the back of the meter allows an interface of the
turbidimeter with an IBM compatible computer for real time data acquisition and
data storage using the PC. This port also allows an interface with a RS-232 serial
printer.
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