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Atlas Scientific EZO-pH User Manual

Atlas Scientific EZO-pH
77 pages
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pH Probe
Range 0 14
95% in 1s
Response time
100 PSI
Max pressure
1 meter
Cable length
No
Internal temperature sensor
~1 Year
Time before recalibration
~2.5 Years +
Life expectancy
N/A
Maintenance
Silver / silver chloride
Reads pH
+/- 0.0001
Resolution
1 99 °C
Temperature range °C
60m (197 ft)
Max depth
Revised 12/12/18
V 3.1
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Atlas Scientific EZO-pH Specifications

General IconGeneral
BrandAtlas Scientific
ModelEZO-pH
CategoryMicrocontrollers
LanguageEnglish

Summary

pH Probe Specifications

Probe Construction

Details the silver/silver chloride construction of the pH probe for measurement.

Product Specifications

Technical Parameters

Lists key technical parameters like depth, weight, response time, and physical dimensions.

Typical Applications

Outlines common uses and environments for the pH probe, including lab and field use.

Operating Principle

pH Measurement Mechanism

Explains how the probe measures hydrogen ion activity via a glass membrane and ion diffusion.

Extending Probe Cable Length

Cable Extension Guidelines

Provides instructions for extending probe cable length, including isolation methods and risks.

Helpful Operating Tips

Probe Handling and Storage

Advice on keeping probe wet, removing air bubbles, and preparing it for use.

Probe Cleaning and Maintenance

Cleaning Procedures

Methods for cleaning pH bulb to ensure accurate readings, warning against abrasive materials.

Recalibration and Reconditioning

Recalibration Frequency

Guidance on recalibration frequency based on usage environment and conditions.

Reconditioning Kit Usage

Recommends using the specific reconditioning kit for aging probes to restore performance.

EZO-pH Circuit Introduction

Circuit Features and Specs

Details EZO-pH circuit specifications: range, resolution, accuracy, and data protocols.

EZO Circuit Dimensions and Ratings

Physical Dimensions

Provides physical dimensions and footprint of the EZO circuit board for integration.

Power Consumption and Ratings

Lists power consumption figures and absolute maximum ratings for the EZO circuit.

EZO Circuit Identification

Circuit Identification Guide

Explains how to identify correct EZO circuit and datasheet, differentiating from legacy versions.

Calibration Theory and Methods

Single Point Calibration

Details the process and commands for performing a single-point calibration of the pH probe.

Two Point Calibration

Outlines steps and commands for a two-point calibration of the pH probe.

Three Point Calibration

Explains procedure and commands for a three-point calibration of the pH probe.

Power and Data Isolation

Importance of Isolation

Discusses EZO-pH circuit sensitivity and need for electrical isolation to prevent noise interference.

Wiring and Connection Guidelines

Correct Wiring Examples

Illustrates proper methods for connecting EZO circuit to various boards for optimal performance.

Incorrect Wiring Examples

Shows common wiring mistakes to avoid, emphasizing proper setup and perfboard use.

Communication Protocols

Supported Protocols

Lists data protocols supported by EZO-pH circuit, such as UART and I2C.

UART Communication Mode

UART Command Reference

Quick reference for UART commands: functions and default states.

UART Data Transmission

Describes data format, encoding, and terminator for UART communication.

I2C Communication Mode

I2C Command Reference

Quick reference for I2C commands: functions and page references.

I2C Data Transmission

Explains data format, encoding, and string length for I2C data.

EZO Circuit Footprint and Placement

CAD Software Integration

Guides on placing headers and integrating EZO circuit footprint into CAD designs.

Datasheet Revision History

Change Log Summary

Lists changes and updates across datasheet versions for tracking revisions.

Firmware Update Log

Firmware Version History

Details firmware evolution: new features, bug fixes, and command additions.

Warranty and Limitations

Warranty Voiding Conditions

Specifies activities that void EZO-pH circuit warranty, like soldering or embedding.

Warranty Reasoning

Explains warranty policy rationale: system integration and engineer responsibility.