The EXAxt 450 series is designed to combine the superior functionality of the Yokogawa EXA series with the ease of use offered in pocket computers (PDA).
Truly unique is the EXAxt 450 series in the Human Machine Interface. The high resolution graphical display and the touch screen operation make all information visible to the operator. Configuration with the touch screen is as easy as operating a PDA. Simply choose the language of choice and on screen instructions assure that the best configuration for the application is obtained.
The EXAxt 450 offers full functionality with PID control on either mA output(s) or on contact output(s).
The contact outputs can be selected as pulse frequency controlled or pulse length controlled contact function to control chemical metering pumps or solenoid valves.
The SC450G is a family of SMART analyzers: In addition to the two mA outputs a digital HART® signal is superimposed on mA1. This signal supplies up to four process variables and many diagnostic data.
This information can be used to generate additional current and contact outputs in the HMI monitor and in maintenance optimization programs like PRM or AMS. Pactware can be downloaded from Yokogawa WEB pages to enable the user to configure SC450G with a PC.
The SC450G offers the best accuracy in the industry by combining the conductivity measurement with advanced temperature compensation functionality, preloaded calibration standards and cell fouling monitoring.
The SC450G is universal. The analyzer accepts sensors with cell constants ranging from 0.005 till 50/cm; 2-electrode sensors as well as 4-electrode sensors; 5 different temperature compensating elements for accurate temperature compensation.
System Configuration
Sensors
Model SC450G
Conductivity / Resistivity Converter
The SC450G offers ultra pure water compensation for demineralised water (default: NaCl), for Steam, Condensate and Boiler water analysis (Cation Conductivity, Ammonia and Morpholine Conductivity) SC450G also offers Matrix compensation and output linearization for accurate analysis of strong acids and alkalis especially for the monitoring of ultra pure water in the pharmaceutical industry the functionality of USP chapter 645, first published in USP23, is implemented.
Features
• IP66/NEMA 4X 1/2DIN enclosure for Field mounting and Panel mounting.
• Unique HMI with menu structure and high resolution graphical display with touch screen
• Interactive display with choice out of 8 languages: English, French, German, Italian, Spanish, Swedish, Portuguese and Japanese.
• Trending display for up to 2 weeks.
• On-screen logbooks store calibration data, configura-
tion changes and events
• Advanced Process Temperature Compensation
• Cell fouling monitoring
