LaMotte TC-3000 Tri-Meter - Manual (Page 60)

STRAY LIGHT
The accuracy of readings on the TC-3000 should not be affected by stray light. Make
sure that the sample compartment lid is always fully closed when taking readings.
GENERAL OPERATING INFORMATION
OVERVIEW
The TC-3000 is a portable, microprocessor controlled, direct reading colorimeter and
nephelometer. Turbidity is measured directly by either EPA Method 180.1 or ISO
Method 7027. Color is measured directly in terms of platinum/cobalt color units.
Chlorine is determined by reaction with DPD reagents, followed by colorimetric
measurement of the reaction. It has a graphical liquid crystal display and 6 button
keypad. These allow the user to select options from the menu driven software, to
directly read test results, or to review stored results of previous tests in the data logger.
The menus can be displayed in six different languages.
The TC-3000 uses a state of the art, multi-detector micro optical configuration for
each test factor that assures long term stability of calibrations, high precision and
accuracy, and low detection limits. All readings are determined by sophisticated digital
signal processing algorithms, minimizing fluctuations in readings and enabling rapid,
repeatable measurements. The microprocessor and optics enable a dynamic range
and auto-ranging over several ranges for each test factor. Energy efficient LED light
sources are used for ISO turbidity, chlorine and color. EPA turbidity uses a tungsten
filament light source that meets or exceeds EPA specifications and is designed for a
uniform light spot image and stable output.
Tube positioning rings are supplied with the TC-3000. These rings snap onto the
shoulders of the tubes. The rings ensure that the tubes are positioned in the chamber
in the same orientation from one reading to the next. This minimizes variations in
readings due to differences in tube position. This results in greater repeatability and is
especially important for samples
with low turbidity.
A 9-volt alkaline battery powers
the TC-3000 and an optional
AC adapter is available. A fresh
battery should be installed at all
times even when using the AC
adapter.
An RS232 serial port on the
back of the meter allows an
interface of the meter with an
IBM compatible computer for
real-time data acquisition and
data storage using a PC. The
TC-3000 may be interfaced with
any Windows-based computer
by using the LaMotte SMARTLink
2 Program. The port also allows
an interface with an RS232
serial printer.
60 TROUBLESHOOTING •GENERAL OPERATING INFORMATION
Back
View
Side
View
RS232
Serial Port
AC
Adapter Socket
Lid