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Extech Instruments DO700 User Manual

Extech Instruments DO700
25 pages
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User's Guide
Digital Dissolved Oxygen,
Conductivity, TDS and pH Meter
Model DO700
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Extech Instruments DO700 Specifications

General IconGeneral
BrandExtech Instruments
ModelDO700
CategoryMeasuring Instruments
LanguageEnglish

Summary

Introduction to the DO700 Meter

Keypad Description and Functions

Datalogger Memory Operations

STORE Readings

Instructions on how to save recorded measurements.

RECALL Readings

Procedure for retrieving previously stored data.

CLEAR Readings

Steps to erase all stored data from memory.

pH Measurement Mode Procedures

3-Point pH Calibration

Detailed guide for 3-point pH calibration using standard buffers.

Testing and Programming pH Parameters

Parameter P7: Restore Factory Default Settings

pH Measurement, Calibration, and Electrode Considerations

Error messages ERR-1 and ERR-2

Troubleshooting common pH errors and their causes.

Calibration intervals and recalibration situations

Guidelines on when to recalibrate the pH meter.

Electrode soaking and maintenance

Proper procedures for storing and maintaining the pH electrode.

Electrode damage and replacement

Signs of a faulty pH electrode and when to replace it.

Conductivity Measurement Mode Procedures

Conductivity Calibration

Detailed procedure for calibrating the conductivity meter.

Conductivity Calibration Methods

Conductivity Temperature Compensation

Parameter P2: Electrode Constant 'K' Selection

Parameter P4: Temperature Coefficient Temperature Compensation

Parameter P5: Electrode Constant Calibration

Parameter P9: Restore Factory Default Settings

Conductivity Measurement, Calibration, and Maintenance Considerations

Factory calibration and user calibration

Guidance on when to perform conductivity calibration.

Conductivity electrode cleaning and maintenance

Procedures for cleaning and maintaining the conductivity probe.

Dissolved Oxygen (DO) Measurements

DO Calibration Procedure

Detailed procedure for calibrating the Dissolved Oxygen meter.

Dissolved Oxygen Water Sample Test

Dissolved Oxygen Measurement and Calibration Considerations

Temperature and Barometric pressure effects on DO

Explains how environmental factors impact DO readings.

DO electrode polarization and maintenance

Proper care and handling of the DO electrode.

DO Parameter Settings

P3 - Manual Barometric Pressure setting

Adjusts barometric pressure compensation for DO.

DO Parameter Settings Continued

Replacing the Membrane Cap

Step-by-step guide for replacing the DO electrode membrane cap.

Zero Dissolved Oxygen Calibration

Salinity Calibration for DO

Barometric Pressure Setting for DO

Instrument Specifications

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