PH202G(S)

Overview

2-wire transmitter for pH and ORP (redox)

Product Description

Fieldbusses are based on highly reliable bi-directional communications between “smart” field devices and HOST systems. Next to a wide range of data each smart device can provide their status which is essential for adequate control and maintenance.
The famous EXA sensor diagnostics will provide asset management facilities for those who operate and maintain the plant.“The advert of Fieldbus technology had made possible a wide range of new capabilities throughout every level of the control system that had not previously been possible or fully explored. ”Yokogawa has implemented three leading process Fieldbus technologies in their 202 series: HART, Foundation Fieldbus H1 and Profibus PA.

All transmitters are provided with the importantand widely used Device Description files that provide information on parameters and other data in each device, as well as the ability to include algorithmic relationships such as calibrations.

Flexibility, reliability and low maintenance are among the benefitsprovided by the EXA PH202 pH and redox analyzer. Designed tomeet the particular requirements of measuring pH/Redox in modern industrial environments, it contains many features to ensure the best precision whatever the application.

The transmitter is housed in a robust IP65 field mountable case and combined with the easy and clear LCD makes the PH202 a complete industrial transmitter. The famous EXA sensor diagnostics are enhanced by an improved impedance check.
The logbook is used to store important configuration, calibration history and diagnostic data. Prediction of sensor failure is possible by reference to the logbook. Automatic calibration uses internal buffer tables and stability checking to ensure maximum accuracy with minimum effort. Process temperature compensation enhances accuracy in applications where the influence of temperature is seen in process pH changes. pH and redox measurements can be made simultaneously when an appropriate sensor combination is used.

Features