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OTT Hydrolab DS5 - User Manual

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Hydrolab DS5X, DS5, and MS5
Water Quality Multiprobes
USER MANUAL
February 2006, Edition 3
© Hach Company, 2006. All rights reserved.

Table of Contents

Questions and Answers

  • H
    Heather WallerAug 16, 2025
    What to do if PC or communication software of OTT Hydrolab DS5 is not functioning correctly?
    • T
      Thomas JensenAug 16, 2025
      If your PC or terminal emulation or communication software isn't working right, try these steps: * Start the communications software before connecting the instrument. * Make sure the PC is on and the communication software is running. * Check that you've selected the correct communication port (COM 1, 2, 3, 4). * Confirm the terminal is set to ANSI terminal emulation, and the baud rate is correct (19200, 8, N, 1). * If using a long cable (100 meters or more) with the Surveyor, set the terminal and Sonde baud rates to 9600.
  • C
    Christine VanceAug 19, 2025
    What to do if communication is not established after several attempts with OTT Hydrolab DS5?
    • K
      Kevin JohnsonAug 19, 2025
      If you're having trouble establishing communication, here are a few things to check: * First, make sure the instrument is powered on and working. * Then, check the power cables and connections to ensure they are properly connected to the wall outlet or external battery, if you're using one. * Also, verify that the input voltage to the multiprobe is between 7V and 18V. * If your multiprobe has an internal battery pack, check the batteries' polarity and voltages.
  • J
    Jeffrey FordAug 22, 2025
    Why OTT Hydrolab DS5 gives wrong Conductivity, Temperature, and/or Depth readings?
    • A
      Ann FloresAug 22, 2025
      Incorrect readings for Conductivity, Temperature, or Depth can often be resolved by ensuring that the sensors are properly maintained and calibrated. Also, verify that the units displayed are accurate (e.g., for Depth: meters, feet, or psi).
  • L
    Lauren PhillipsAug 26, 2025
    What to do if power cables and connections of OTT Hydrolab DS5 have issues?
    • A
      Andre AndersenAug 26, 2025
      If you're experiencing power cable and connection issues, verify that the PC and multiprobe are properly connected to the wall power outlet or an external battery, if being used. Also, check that the input voltage to the multiprobe is between 10 and 15 volts. If applicable, make sure the battery pack is correctly installed and verify the battery polarity and voltages.
  • C
    Carla MorganAug 28, 2025
    What to do if OTT Hydrolab DS5 gives incorrect D.O. readings?
    • B
      Barbara BallardAug 28, 2025
      If you're getting incorrect D.O. readings, make sure the D.O. sensor has been properly maintained and calibrated.
  • G
    Gerald WaltersAug 31, 2025
    What to do if Hydras 3LT does not automatically detect the Sonde when launched?
    • M
      Michael PriceAug 31, 2025
      If the Hydras 3LT isn't automatically detecting the Sonde when launched, press the RE-SCAN FOR SONDES button.
  • S
    sonyamarshallSep 3, 2025
    How to configure Hydras 3 LT Communication Settings for OTT Hydrolab DS5?
    • C
      Cynthia GuerreroSep 3, 2025
      To configure Hydras 3 LT Communication Settings, select File>Options from the Hydras 3 LT Connection Screen. If you know the Sondes/PC baud rate and COM port, disable the COM Port and baud rate auto scans and set Hydras3LT to use the known values.
  • K
    Kristy WatsonSep 6, 2025
    What to do if OTT Hydrolab DS5 Transmitter has a connection timeout issue?
    • M
      mullinskatherineSep 6, 2025
      If you're experiencing a connection timeout issue, the connection timeout may be extended from 10 to 15 seconds, which will allow time for additional retries.
  • A
    Angela PrattSep 9, 2025
    What to do if there are internal components issue with OTT Transmitter?
    • S
      Sophia FreemanSep 9, 2025
      If you suspect an issue with the internal components, make sure all internal connections are securely seated. Check for any water inside the unit; if damp, dry it thoroughly with a lint-free cloth or let it air dry in a dry room overnight. Identify and repair the source of the leak. If these steps don't solve the problem, try substituting other instruments, cables, and terminals to find the failing component.
  • C
    Craig DavisSep 12, 2025
    Why OTT Hydrolab DS5 gives Low D.O. readings or extreme pH/Redox levels?
    • K
      Katherine FisherSep 12, 2025
      If you're getting low D.O. readings or extreme pH/Redox levels, check the value of the sample solution and ensure the sensors are properly maintained.

Summary

Section 2 General Information

2.1 Safety Information

Provides essential safety warnings, hazard identification, and precautionary labels for instrument use.

2.4 Sensor Options

Lists and describes the various sensors available for MS5 and DS5/DS5X multiprobes, including catalog numbers.

Section 3 Installation

3.2 Instrument Assembly

3.3 Power Options

Overview of available power sources for the multiprobe, including battery packs and adapters.

Section 4 Operation

4.1 Parameter Setup

Guides on configuring sensor parameters and settings using Surveyor or Hydras 3 LT software.

4.2 Calibration

Procedures for calibrating various multiprobe sensors to ensure measurement accuracy.

4.3 Using the DS5;MS5 for Short Term Deployments

Section 5 Deployment

5.1 Deployment Considerations

Key factors to consider before deployment: depth, temperature, data lines, and minimum requirements.

5.2 Deployment in Open Waters

Guidelines for deploying the multiprobe in open water environments, covering clearance and general placement.

Section 6 Maintenance

6.1 Multiprobe and Accessory Maintenance

6.2 Battery Replacement

Step-by-step instructions for replacing alkaline and lithium batteries in the multiprobe.

6.5 Clark Cell Dissolved Oxygen Maintenance

6.8 pH Electrode Maintenance

Appendix A Troubleshooting

Troubleshooting Communications

Steps to resolve issues with software not detecting the multiprobe or establishing communication.

Troubleshooting Sensor Issues

Common sensor reading problems and their potential solutions for multiprobe operation.

Appendix B External Communications

B.1 SDI-12 Interface

B.2 Connection to an External Device

B.3 RS485 Interface

B.4 Modbus Interface

B.5 Using a Modem with Multiprobes

B.6 TTY Mode

Appendix C Using HyperTerminal

C.1 HyperTerminal Setup

OTT Hydrolab DS5 Specifications

General IconGeneral
Protection RatingIP68
Measurement ParametersTemperature, Conductivity
Measurement Range (Temperature)-5 to +50 °C
Measurement Range (Conductivity)0 – 200 mS/cm
Accuracy (Temperature)±0.1 °C
OutputDigital
MaterialStainless steel

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