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Flexibility, reliability and low maintenance are among the benefits
provided by the EXA DO202 Dissolved Oxygen 2-wire transmitter.
Designed to meet the exacting requirements of Dissolved Oxygen
analysis in the modern industrial environment, it contains many
features to ensure the best precision whatever the application.
DO202 is housed in a rugged IP65 enclosure and is a loop
powered 2-wire transmitter to combine safe and simple wiring,
installation and commissioning with the advanced functionality
of the YOKOGAWA EXA microprocessor analyzer family.
The DO202 is a SMART transmitter. Digital communication
is done either through HART® protocol superimposed on the
4- 20 mA current or completely digital through Fieldbus
communication: Fieldbus Foundation.
This SMART functionality allows the transmission of up to four
process variables, information stored in the logbook, diagnostic
data and remote configuration of the analyzer.
Yokogawa has developed drivers for PC configuration and
maintenance software for different platforms like PRM, AMS
and Pactware. The necessary drivers for PACTWARE
can be downloaded free of charge from the website
www.yokogawa.com/eu
The DO202 transmitter is a universal Dissolved Oxygen
Transmitter that accepts both galvanic sensors like DO30 and
Polarographic sensors like OXYGOLD and OXYFERM that are
used primarily in the Biotech industries. In combination with the
OXYGOLD the analyzer can accurately measure concentrations
down to 2 ppb (mg/m3).
For high precision the DO202 offers automatic temperature
compensation for both % saturation and ppm/ppb
measurements; manual salinity compensation for analysis in
saline water and manual pressure compensation for accurate
analysis at high elevations or in reactors with high static pressure
like production fementors.
Features
| • | Universal input accepts Galvanic and Polarographic sensors
and various temperature compensating elements
(Pt1000, 22k NTC) |
| • | HART® communication standard with 4-20 mA loop powered
model |
| • | Fieldbus models for Fieldbus Foundation |
| • | Wide measuring range including ppb, ppm and % saturation |
| • | Certification for hazardous area pending (ATEX, FM, CSA) |
| • | Recommended sensors model DO30(G) , PB30, OXYFERM,
OXYGOLD (for ppb measurement) |
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