Hach polymetron 9240 User Manual (English)

Other manuals for Hach polymetron 9240

Questions and Answers:

M
Mrs. April KennedyAug 20, 2025
What to do if the calibration parameters are questionable in Hach polymetron 9240?
- I
  Ian NelsonAug 20, 2025
  Questionable calibration parameters in Hach Measuring Instruments can arise from several factors. The electrode may be too slow; in this case, set the activation setup to 24 hours frequency. Manually activate the electrode by immersing it for 10 minutes in activation solution. If the problem persists, change the electrode. Check and refill the calibration canister if the calibration solution is empty. If the calibration solution is polluted, replace it. If the drain valve cannot open, change the valve. If the drain pump is inefficient, remove it and clean the internal valve. Ensure the analyzer frame is installed vertically.
A
ahernandezAug 21, 2025
Why is there no display on my Hach polymetron 9240 Measuring Instruments screen?
- J
  Janice HarrisAug 21, 2025
  The absence of a display on your Hach Measuring Instruments screen could stem from several causes. First, ensure the instrument is properly connected to a power source. A defective fuse might also be the culprit, so consider replacing it. Check that the cable connecting the power to the CPU board and the connection between the CPU board and PSU module are properly plugged in. A short circuit in the power supply board could also be the reason; visually inspect the power supply. If none of these steps resolve the issue, the hardware may be defective, requiring assistance from a service technician.
S
Sydney GriffinAug 26, 2025
Why is the measurement unstable in standard applications with Hach Measuring Instruments?
- R
  Randy RoyAug 26, 2025
  Unstable measurements in standard applications with Hach Measuring Instruments can be due to several reasons. First, ensure the electrode is properly connected. Look for any chemical, temperature, or pressure sources of interference. Check that the measuring cable shielding is well connected. Refill the electrolyte solution if there is no electrolyte. Verify the conditioning reagent bottle is not empty and that the tubing between the conditioning bottle and overflow is correctly connected. If the problem persists after these checks, the measurement board may be defective, requiring assistance from a service technician.
T
Terrence JohnsonAug 27, 2025
What to do if the keyboard does not operate on Hach polymetron 9240 Measuring Instruments?
- C
  Christopher KramerAug 28, 2025
  If the keyboard on your Hach Measuring Instruments is unresponsive, start by checking the keyboard connection plugs. If the keyboard remains inactive, reset the instrument by temporarily interrupting the power for 5-10 seconds and check each key again. If there is no change, it may require a service technician.
J
Jeffrey CruzAug 30, 2025
What to do if the temperature measurement is not correct on Hach Measuring Instruments?
- H
  Heather BradyAug 30, 2025
  If the temperature measurement on your Hach Measuring Instruments is incorrect, check that the conductivity sensor is properly connected and not defective. Calibrate the temperature. If the problem persists, it may require a service technician.
M
michael11Sep 1, 2025
What to do if the pump is not working in Hach Measuring Instruments cationic applications?
- T
  tracy34Sep 1, 2025
  If the pump isn't working in your Hach Measuring Instruments cationic applications, first check if the option is activated. Verify the electrical connections and voltage to ensure the pump is properly connected; if the voltage is around 70 volts, change the pump. Confirm the instrument is in START mode by stopping and restarting it. Check for any active system alarms.
T
Tanya HallSep 3, 2025
What to do if the grab sample is not correct in Hach Measuring Instruments?
- J
  Jonathan AverySep 3, 2025
  If the grab sample is not correct in your Hach Measuring Instruments, check the calibration. If the calibration is not correct, see below. Ensure that activation has not been skipped; if so, start a new grab sample again. If the electrode is too slow, set the activation setup to 24 hours frequency. Manually activate the electrode by immersing it for 10 minutes in activation solution. If the problem persists, change the electrode.
A
Angela BrownSep 4, 2025
What to do if the alarm relays do not drop out on Hach polymetron 9240 Measuring Instruments?
- O
  ograntSep 5, 2025
  If the alarm relays do not drop out on your Hach Measuring Instruments, verify that the relay parameters have been properly programmed. Check that the programmed set points are compatible with the programmed measuring range. Check the relay characteristics with an ohmmeter. If the problem cannot be solved, call the Service Technician.
T
Tanner George MDSep 7, 2025
Why is the display incorrect on my Hach polymetron 9240 Measuring Instruments?
- A
  April MurphySep 7, 2025
  An incorrect display on your Hach Measuring Instruments may be due to a malfunctioning CPU board or defective software. Reset the instrument by temporarily interrupting the power for 5-10 seconds. If the issue persists, contact a service technician.
G
gabrielamcneilSep 9, 2025
What to do if data on the screen cannot be removed on Hach polymetron 9240?
- G
  gwellsSep 9, 2025
  If data on the screen of your Hach Measuring Instruments cannot be removed, make sure the electrode is properly connected. Reset the device. Program the instrument again. If these steps do not remedy the problem, reset the instrument by interrupting the power for 5-10 seconds. If the problem cannot be solved, call the Service Technician.

Hach polymetron 9240 Specifications

General

Brand	Hach
Model	polymetron 9240
Category	Measuring Instruments
Language	English

Summary

Section 1 General Information

1.1 Disclaimer

Legal disclaimer about accuracy and liability of the information provided in the manual.

1.2 Contact information

Provides contact details for Hach Lange's manufacturing site and European HQ.

1.3 Safety information

General safety instructions, precautions, and explanation of hazard symbols.

1.4 Product recycling information

Information on WEEE directive and product disposal requirements in Europe.

1.5 Product disposal

Guidelines for returning and disposing of old or end-of-life equipment.

1.6 Restriction of hazardous substances (RoHS)

Information regarding the RoHS directive and hazardous substance content.

Section 2 Specifications

2.1 Technical specifications

Detailed performance and environmental specifications of the analyzer.

2.2 Model identification system

Explanation of the analyzer's model identification matrix.

2.3 Warranty

Outlines the instrument's warranty period and limitations.

Section 3 Analyzer Overview

3.1 Overview

General introduction to the analyzer and the Nernst law principle.

3.2 Schematic process overview

Illustration and legend of the analyzer's working principle components.

3.3 Presentation of the analyzer

Visual presentation of the analyzer's front, rear panels, and pumps box.

3.4 Conditioning reagent

Recommends Diisopropylamine (DIPA) as conditioning reagent and compares alternatives.

3.5 pH regulation

Explains pH regulation for non-cationic and cationic applications.

3.6 Measurement process

Details the measurement process, steps, cycle, and smart rinse option.

3.7 Automatic calibration cycle

Overview of the analyzer's automatic calibration process.

3.8 Manual calibration cycle

Overview of the analyzer's manual calibration process.

3.9 Grab sample measurement cycle

Details the grab sample measurement process and cycle.

3.10 Analyzer outputs

Tables showing screen, analog, alarm, and RS485 outputs during processes.

3.11 Available options

Describes optional features like K-Kit, heat exchanger, and extra channels.

Section 4 Installation

4.1 Analyzer inspection and unpacking

Instructions for inspecting and unpacking the instrument upon arrival.

4.2 Instrument preparation

Preliminary checks and considerations before installing the analyzer.

4.3 Instrument mounting

Guidance on mounting the instrument on a panel or wall.

4.4 Step-by-step installation

Step-by-step guide for installing the analyzer, including connections.

4.5 Analyzer stabilization

Instructions for stabilizing the analyzer after installation before calibration.

4.6 Analyzer setup

Setting system and user parameters followed by initial calibration.

Section 5 Operating Instructions

5.1 Data entry

Explains how to enter and update data fields using the analyzer's interface.

5.2 Measurement screens

Overview of the analyzer's display screens: principal, historical, and alarms.

5.3 Main menu

Accessing and navigating the main menu structure and its options.

5.4 Menu structure overview

Diagram providing a comprehensive view of the analyzer's menu hierarchy.

Section 6 System Setup

6.1 System setup - Menu overview

Overview of the various options available within the System Setup menu.

6.2 Date and time

Instructions for setting the system date and time parameters.

6.3 Display options

Configuring display parameters like language, concentration units, and temperature units.

6.4 Passwords

Setting and managing passwords for menu access and security.

6.5 Default values

Procedure for loading factory default configuration settings.

6.6 Adjust mA output

Calibrating and adjusting analog mA output signals for the analyzer.

6.7 Factory settings

Access to factory settings, reserved for qualified service personnel.

Section 7 User Setup

7.1 User setup - Menu overview

Overview of the various options available within the User Setup menu.

7.2 Measurement

Setting measurement parameters like target pH, gas/water ratio, and timings.

7.3 Alarms

Setting up system and warning alarms, including their parameters and tables.

7.4 mA outputs

Configuring analog mA output parameters, including type, mode, and scale.

7.5 RS485 (or PROFIBUS)

Configuring RS485 or PROFIBUS communication parameters.

7.6 Sample channels

Setting up parameters for sample channels, including activation and naming.

Section 8 Calibration

8.1 General

Introduction to calibration, methods, and prerequisites for accurate results.

8.2 Calibration solution concentrations

Specifies required concentrations for manual and automatic calibration solutions.

8.3 Calibration - Menu overview

Overview of the various options available within the Calibration menu.

8.4 Start calibration

Initiating manual calibration processes like known addition and point calibrations.

8.5 Automatic calibration setup

Setting up automatic calibration schedules and parameters for regular intervals.

8.6 Calibration results

Display and interpretation of calibration results and acceptance criteria.

8.7 Calibration loggings

Viewing historical calibration data, including date, time, and slope/offset values.

8.8 Custom adjustment

Manually adjusting measurement values for minor corrections.

8.9 Temperature calibration

Calibrating the analyzer's temperature electrode.

Section 9 Maintenance and Diagnostics

9.1 Maintenance schedule

Suggested schedule for routine analyzer maintenance tasks.

9.2 Battery replacement

Procedure for replacing the internal backup battery.

9.3 Local controller board replacement

Guidance on replacing the local controller board.

9.4 Fuse replacement

Instructions for replacing fuses in the instrument.

9.5 Cleaning and decontamination

Recommendations for cleaning the analyzer's exterior.

9.6 Maintenance and diagnostics menu option

Accessing maintenance and diagnostic procedures via the software menu.

9.7 Maintenance and diagnostics - Menu overview

Overview of the Maintenance and Diagnostics menu.

9.8 Reagent changes

Procedures for managing reagent bottles and consumption.

9.9 Calibration diagnostics

Verifying the correctness of the last calibration.

9.10 Raw values

Checking electrode functionality by examining raw values.

9.11 Test accessories

Testing analyzer accessories, alarm relays, and logical inputs.

9.12 Sensor reactivation

Performing manual sensor reactivation.

9.13 Extended stop

Procedure for safely shutting down the analyzer for extended periods.

9.14 Startup

Steps for starting up the instrument after a period of inactivity.

9.15 Software versions

Displaying installed software versions for informational purposes.

Section 10 Troubleshooting

10.1 General faults

Table of common malfunctions, their causes, and remedies.

10.2 Detection of functional faults

Table for diagnosing issues related to measurement precision.

10.3 Miscellaneous problems

Table of miscellaneous problems and their causes/solutions.

Section 11 Spare Parts and Accessories

11.1 Accessories - Options - Maintenance kits

Lists accessories, options, and maintenance kits with part numbers.

11.2 Spare parts - In contact with sample

Lists spare parts for components that come into contact with the sample.

11.3 Spare parts - In contact with cell or electrodes

Lists spare parts for components in contact with the cell or electrodes.

11.4 Spare parts - In contact with reagents or standard solution

Lists spare parts for components in contact with reagents or standard solutions.

11.5 Electronics

Lists electronic components and their corresponding part numbers.

11.6 Additional hardware

Lists additional hardware accessories available for the analyzer.

Section 12 Default Configuration

12.1 User configuration table

Table detailing default and possible values for user configuration options.

Section 13 Material Safety Data Sheets (MSDS)

13.1 Diisopropylamine (DIPA)

Material Safety Data Sheet for Diisopropylamine (DIPA).

13.2 Potassium chloride

Material Safety Data Sheet for Potassium Chloride.

13.3 Sodium chloride

Material Safety Data Sheet for Sodium Chloride.

13.4 Sodium nitrate

Material Safety Data Sheet for Sodium Nitrate.

Section 14 Reagent Preparation

14.1 Conditioning Reagent

Instructions for preparing the conditioning reagent (DIPA).

14.2 Standard Solutions

Procedures for preparing standard solutions for calibration and grab samples.

14.3 Automatic Calibration Solution (10 ppm Na)

Preparation of the 10 ppm Na automatic calibration solution.

14.4 3M KCl

Procedure for preparing the 3M KCl solution.

14.5 0.5M NaNO3

Procedure for preparing the 0.5M NaNO3 solution.

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