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Dissolved Oxygen Analyzers

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  • Robust design that endures harsh environments
  • Fast, accurate results
  • One calibration per year
  • Low maintenance
  • Flexible communications
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Dissolved Oxygen Analyzers Introduction

Dissolved Oxygen Analyzers Dissolved oxygen (DO) is a liquid process measurement for determining the amount of oxygen dissolved or carried in the process liquid. There are three common technologies for dissolved oxygen measurements: polographic, galvanic and optical.

It is a measuring instrument designed to continuously measure the dissolved oxygen concentration of condensate and feed-water used in boiler plants. Since dissolved oxygen is a major factor in corrosion or scale, it must be monitored continuously.

Dissolved oxygen (DO) is a liquid process measurement for determining the amount of oxygen dissolved or carried in the process liquid. There are three common technologies for dissolved oxygen measurements: polographic, galvanic and optical. The standard units of measure are milligrams per liter (mg/l), parts per million (ppm), parts per billion (ppb), or % saturation.

Digital Conductivity Meter/ Controller Feature


●  Compatible with DRFN digital dissolved oxygen sensors includingfluorescence and polarography;
●  OTA download technology as a smart configuration option for the instrument;
●  Automatic compensation for air pressure display;
●  The working status of the DO sensor can be queried, including reading the serial number;
●  Time and historical data recording function;
●  3.2-inch large LCD screen;
●  User-friendly Chinese and English language interface;
●  Password can be set to prevent misoperation;
●  2 SPST multi-function and settable relays;
●  Two 0/4~20mA active current loop outputs;
●  RS485 interface, Modbus RTU communication protocol;
●  IP66 waterproof level, sealed enclosure can isolate pollution and corrosive gas;
●  Support a variety of installation methods.


Dissolved Oxygen Analyzers Specification

Controller
measurement type
Dissolved oxygen, saturation, oxygen partial pressure
Measuring range
0 - 20mg/L,0.00 to 20.00 ppm,0 - 200%,0 - 400hPa
Resolution
0.01mg/L,0.1%,1hPa
Accuracy
±1.5%FS
Temperature measurement type
NTC 10K/PT1000
Auto A/manual H Measuring range
-10 - 60℃ Resolution: 0.1℃ Correction
accuracy: ±0.5℃
Output type
4 - 20mA current transmission output
Max.loop resistance
750Ω
Accuracy
0.1%FS
Output type
RS485 digital signal output
Communication protocol
Standard MODBUS-RTU (customizable)
Power supply
AC220V±10%,50Hz/60Hz (optional 24V±10%)
Response time
90% of the value in less than 60 seconds
Sensor
Dimensions
Diameter : 25 mm ; length : 146 mm
Weight
Stainless steel version 450g (sensor + cable 3 m)

Titanium version 300 g (sensor + cable 3 m)
Material
Stainless steel 316L, New : body in Titanium
Maximum pressure
5 bars
Protection
IP68
Stocking temperature
- 10°C to + 60°C
Signal interface
Modbus RS-485 (standard) and SDI-12 (option)
Sensor power-supply
5 to 12 volts
Consumption
Standby 25 µA
Average RS485 (1 measure/ seconde) : 4.4 mA
Average SDI12 (1 measure/ seconde) : 7.3 mA
Current pulse : 100 mA


-Manuals

Dissolved Oxygen Analyzers

-Data sheet


Dissolved Oxygen Analyzers Application

Dissolved Oxygen Analy zersprovide reliable measurements for municipal and industrial applications, including harsh environments such as chemical plants or challenging nuclear power applications.

Dissolved Oxygen Analyzers application

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