Hach AutoCAT 9000 - User Manual

Questions and Answers:

D
Dr. Joan DuranAug 29, 2025
What does the stormy icon on Titrant Tab mean on Hach AutoCAT 9000 Laboratory Equipment?
- D
  dalvarezAug 29, 2025
  The stormy icon indicates a problem with the titrant or burette. To solve this: 1. Verify that the desired method has been selected. 2. Verify that the burette has been properly installed in the software. 3. Verify that the correct titrant has been installed. 4. Verify that the titrant concentration has been properly set by either entering the value manually or by running the appropriate calibration routine.
J
John KimAug 28, 2025
What to do if the Hach Laboratory Equipment titration curve is unusually noisy?
- T
  Timothy LongAug 28, 2025
  Mechanical vibrations of the sample cell or instrument can increase noise in the titration curve. Remove any source of vibration, such as repositioning the sample beaker to prevent the magnetic stir bar from striking its side. Also, ensure the plastic anti-diffusion tip and electrode are properly installed into the electrode head.
M
Melissa AguirreAug 27, 2025
What to do if the concentration for a known standard solution obtained using the Hach AutoCAT 9000 Laboratory Equipment does not match its actual value?
- A
  Anthony ParkerAug 27, 2025
  If the measured concentration doesn't match the actual value, the titrant concentration entered in the instrument may be incorrect, or the wrong sample volume was entered. Verify the correct titrant concentration and units are entered. Confirm the correct sample volume is entered. Restandardize the titrant using the embedded calibration procedure. You can also replace the current bottle of titrant with a fresh one and enter the proper concentration for the new titrant.
J
Jerry WoodardAug 27, 2025
What to do if I see air bubbles trapped in the lines of Hach AutoCAT 9000 Laboratory Equipment?
- K
  Kimberly GrahamAug 27, 2025
  Air bubbles might be trapped during titrant installation or sucked in through loose tubing connections. Ensure the titrant inlet tube is secure and submerged in the titrant solution. Verify all tubing connections are tight, replacing any damaged ones. Use the 'Flush' function under Titrants>Burette functions. While flushing, gently tap the tubing to help purge the air bubbles.
M
mjonesAug 25, 2025
Why titrant doesn’t flow through tubing in Hach AutoCAT 9000?
- E
  efranklinAug 26, 2025
  If titrant isn't flowing, it could be due to a loose tubing connection. Make sure the inlet tube for the titrant is secure and below the surface of the titrant solution inside the titrant bottle. Check that all tubing connections are tight and replace any damaged or stripped connections.
L
Lori PhillipsAug 25, 2025
What to do if titrant leaks from Hach AutoCAT 9000 Laboratory Equipment?
- L
  lchoiAug 25, 2025
  Titrant leaks often mean a tubing connector isn't tightened enough or the burette seals are faulty. Try tightening the leaking tube connection. If it's damaged, replace the tubing. Also, check the burette seals; if they're leaking, replace the burette.

Hach AutoCAT 9000 Specifications

General

Model	AutoCAT 9000
Category	Laboratory Equipment
Power Supply	100-240 VAC, 50/60 Hz
Operating Temperature	5-40°C
Accuracy	±2% of reading
Outputs	USB, RS-232
Weight	10 kg
Connectivity	USB, Ethernet

Summary

Safety Information

Hazard Information

Explains signal words (Danger, Caution, Note) used for hazard communication.

Precautionary Labels

Advises reading all labels and tags for safety information.

Instrument Specifications

Methods and Measurement Specifications

Details titration methods, measuring ranges, and printout options.

Results and Storage Specifications

Covers results display, storage capacity, and sample list capabilities.

Hardware and Environmental Specifications

Includes burette, inputs/outputs, general specs, power, and environmental conditions.

Introduction

1.1 General Information

Provides an overview of the AutoCAT 9000 and its capabilities.

1.2 Instrument Startup Summary

Outlines the step-by-step process for setting up the instrument.

1.3 Unpacking

Details the procedure for removing and inspecting instrument components.

1.4 User Access Levels

Explains the different user access levels (Supervisor and Routine).

Instrument Assembly

2.1 Operating Environment

Specifies the recommended ambient conditions for instrument operation.

2.2 Instrument Assembly Procedures

Guides the physical assembly of the instrument, including bottle holder, electrodes, and burette.

Basic Operation

3.1 Instrument Display and Keypad

Explains the instrument's display, keypad layout, and basic navigation.

3.2 AutoCAT Main Menus

Describes the main menu structure and navigation within the AutoCAT software.

3.3 System Configuration

Covers essential system settings like supervisor code, user ID, language, and time.

3.4 Edition Mode

Explains how to use the Edition feature for multi-tasking during procedures.

3.5 Using Sub-IDs

Details how to use Sub-IDs for storing optimized parameters for different sample points.

Software Setup

4.1 Accessing Supervisor Mode

Guides the user on how to enter supervisor mode for software setup.

4.2 Software Setup for Electrode and Temperature Sensor Installation

Details the software steps for installing electrodes and temperature sensors.

4.3 Software Setup for Burette Installation

Explains the software procedures for installing the burette.

4.4 Software Setup for Titrant Installation

Covers the software steps for installing or switching titrants.

4.5 Setting Titrant Concentration

Guides on how to input or calibrate the titrant concentration.

4.6 Obtaining the Certificate of Analysis for Hach Reagents

Explains how to download COA for reagent concentration details.

Collecting and Accessing Data

5.1 Amperometric Method Overview

Introduces the various amperometric methods supported by the instrument.

5.2 AutoCAT Titration Process

Details the three main stages of titration: data collection, endpoint determination, and calculation.

5.2.1 Data Collection Parameters

Covers parameters like Current Range, Volume Increment, Predose, and Auto-scaling.

5.2.2 Endpoint Determination Methods

Explains Manual (MEPD), Automatic (AEPD), and Auto Detection for finding the endpoint.

5.2.3 Concentration Calculation Parameters

Lists parameters like Titrant Concentration, Sample Volume, Dilution, and Reductant Concentration.

5.2.4 Statistical Analysis of Results

Details methods for calculating the mean and standard deviation of results.

5.2.5 Accessing Archived Results

Explains how to retrieve and view stored analysis results from the GLP archives.

Calibration Procedures

PAO;5.64 mN Amperometric Forward Titrant Calibration

Step-by-step guide for calibrating the PAO titrant for forward titration.

Iodine Amperometric Back Titrant Calibration

Guide for calibrating the iodine titrant for back titration.

Sampling

7.1 Chlorine Sample Considerations

Discusses factors affecting chlorine sample stability and measurement.

7.2 Container Pretreatment

Details how to prepare sample containers to avoid chlorine demand.

7.3 Sample Handling

Provides guidelines for handling and storing samples for analysis.

7.4 Sample Preparation for Back Titration

Describes the sample preparation steps specific to back titration methods.

Titration Procedures

Chlorine Dioxide Generator Yield

Procedure for calculating the yield of a chlorine dioxide generator.

Chlorine Dioxide, Amperometric Forward Titration

Method for determining chlorine dioxide concentration via forward titration.

Free Chlorine, Amperometric Forward Titration

Procedure for measuring free chlorine concentration using forward titration.

Total Chlorine, Amperometric Back Titration

Method for determining total chlorine using back titration.

Total Chlorine, Amperometric Forward Titration

Procedure for measuring total chlorine via forward titration.

Sulfite, Amperometric Back Titration

Method for determining sulfite concentration using back titration.

Total Oxidants, “Quick” Two Step Amperometric Titration

Procedure for determining total oxidants using a two-step titration.

Chlorite, “Quick” Two Step Amperometric Titration

Method for determining chlorite concentration using a two-step titration.

Manual Endpoint Determination Guidelines

Guidelines for manually determining titration endpoints.

Maintenance

9.1 General Instrument Care

Covers general protection, display care, and cleaning of the instrument.

9.2 Maintenance Intervals

Provides a schedule for routine maintenance tasks.

9.3 Replacing the Fuse

Step-by-step instructions for replacing the primary fuse.

Troubleshooting

Electrical and Mechanical Problems

Addresses power, display, leaks, and flow issues.

Data Collection and Endpoint Issues

Covers curve quality, speed, and automated endpoint determination problems.

Accuracy and Warning Signs

Troubleshooting for result accuracy and instrument warning indicators.

Amperometric Titration Theory

1.1 General Titration Theory

Explains fundamental concepts of redox reactions and reaction measurement.

1.2 Common Errors and Interferences

Discusses factors affecting chlorine analysis, like electrode deposition and nitrite.

1.3 Errors Common to Total Chlorine Determinations

Details errors related to the iodide/triiodide reaction in total chlorine analysis.

1.4 Shift of Endpoints Due to Sample Iodine Demand

Explains how sample iodine demand affects titration endpoints.

1.5 Order of Reagent Addition

Discusses the importance of reagent addition order for saline water samples.

Printer Installation and Setup

AutoCAT 9000 Printer Setup

Guides on connecting and configuring the printer for analysis reports.

Sample Printout Configuration

Details how to configure printout options like Title, Detail, Curve, and Line Fit.

Replacement Parts & Accessories

Replacement Parts

Lists part numbers for common replacement components of the instrument.

Accessories

Lists available optional accessories for the AutoCAT 9000.

Low Level Standards & Testing

Preparation of Low Concentration Chlorine Standards

Discusses practical limitations and recommendations for preparing low-level chlorine standards.

Assessing Standard Accuracy

Explains how to verify standard accuracy using reference methods or standard additions.

AutoCAT 9000 Validation Study

Validation Study Overview

Describes the study conducted to assess the instrument's performance at low chlorine ranges.

MDL, Accuracy, and Precision Determination

Details the determination of Method Detection Limit (MDL), accuracy, and precision.

Analysis Guidelines

Provides guidance on sample handling and electrode performance for accurate measurements.

General Information

Customer Service Overview

Information about Hach Company's customer service and support.

Certification

Product Safety and Immunity Standards

Lists safety certifications and EMC/immunity standards met by the instrument.

Emissions Standards

Details compliance with emissions standards for electrical equipment.

How To Order

Ordering Information

Provides contact details and required information for placing orders.

Technical and Customer Service

Contact information for technical and customer support in the USA.

International Customers

Information on how to contact Hach for international support and dealer locations.

Repair Service

Repair Service Procedures

Instructions and contact information for obtaining repair services.

Warranty

Product Warranty Terms

Details the one-year warranty period and coverage limitations.

Limitation of Remedies

Outlines the exclusive remedies available for warranty breaches.

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