Hach AutoCAT 9000, Instruction Manual

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50081_Introduction.fm
Page 9
Section 1 Introduction
1.1 General Information
The AutoCAT 9000™ is an automated chlorine amperometric end point titration
instrument. Its biamperometric system uses a dual platinum electrode (DPE) probe.
Hach offers amperometric methods for determining total chlorine*, free chlorine, sulfite,
and chlorine dioxide in water. The chlorine dioxide procedure also provides a
measurement of chlorite concentration.
Follow the steps listed in Section 1.2 , Instrument Startup Summary, on page 9 . After
completing these steps, refer to the method calibrations and method procedures for
instructions on specific analyses.
Amperometric titration theory and interferences are detailed in Amperometric Titration
Theory on page 145 .
1.2 Instrument Startup Summary
When you receive your AutoCAT 9000, proceed in the following order:
1. Unpack the instrument and inspect all parts for any damage that occurred during
shipment. Refer to
Table 1 and Figure 1 and Figure 2 on page 24 .
2. Assemble the instrument following the instructions in Section 2 on page 13
3. Review Basic Operation on page 23 to familiarize yourself with the user interface
and the keypad, navigation, and command keys.
4. Set the software parameters and configure the interface following the instructions
given in
Section 4 Software Setup .
5. Clean and condition the electrode according to section 9.1.4 on page 139 .
6. The instrument is set up and ready to perform analyses. The default titrant
concentration is adequate when using a fresh bottle of titrant but you may choose to
calibrate the titrant using the procedures given in
Calibration Procedures on page 49
or you can download the exact concentration of your titrant, see Obtaining the
Certificate of Analysis for Hach Reagents on page 41 .
7. At this time you may wish to run a few test samples to familiarize yourself with the
instrument. We recommend that you use tap water to perform the Total Chlorine
procedure in
Titration Procedures on page 65 .
8. If desired, you may choose to perform certain setup or configuration steps in Basic
Operation on page 23 but they are not essential for using the instrument.
*Forward and Back titration methods are offered for the determination of Total Chlorine.