RDO PRO Optical Dissolved Oxygen Sensor

Product Details

The In-Situ RDO PRO sensor uses groundbreaking technology to measure dissolved oxygen (DO) in harsh environments. RDO PRO sensors are easily integrated into management systems for a variety of aquaculture industries. By continuously monitoring and controlling DO levels, farmers can increase feed conversion ratios, minimize fish hypoxia, and reduce fish disease and mortality.

RDO PRO sensor technology

The RDO PRO sensor uses the principle of "dynamic light-quenching" to measure dissolved oxygen. This low-maintenance sensor uses life-cycle optical technology to provide very stable and accurate results.

When this dosimeter with oxygen characteristics is irradiated with blue light, the dosimeter immersed in the gas sensing metal foil emits red photons. RDO can measure the phase (delay) of the reflected signal and compare it with the transmitted signal. The presence of oxygen in the dosimeter can extinguish the fluorescence and cause the phase of the reflected signal to shift. The reflected signal is detected by the photodiode. The measured phase difference between the blue emitted light and the red reflected light can be used to quantify DO.

RDO PRO Optical Dissolved Oxygen Sensor

Minimal risk:

Report real-time conditions-respond quickly to changes in oxygen content and temperature

Provide accurate results-keep the system stable for a long time, not easy for 12 months

Withstands harsh conditions-Abrasion-resistant foils can withstand blockages and damage from turbulent water. The inert structure makes it resistant to corrosion in high salt environments.

Maximum efficiency:

Reduced calibration work-the sensor maintains its calibration value over long periods of use. The calibration coefficient of the sensor cap is set in advance, which can eliminate the setting error.

Minimal Maintenance-Eliminates diaphragm and electrolyte replacement, making it less susceptible to common interference that reduces the performance of diaphragm sensors.

save money:

Reduced energy waste-the sensor uses minimal power. Make ventilation or pumps run more efficiently.

Reduce labor costs-Compared to traditional current or polarographic sensors, RDO PRO sensors rarely require calibration and maintenance.

Simplified integration-Direct integration with SCADA and PLC systems. Includes integrated Modbus / RS485, 4-20 mA and SDI-12 signal outputs. Requires 8-36 V DC power supply.

Eliminate expensive equipment costs-no need for external transmitters and controllers.

Application:

Hatchery operations

Freshwater pond farming

Outdoor captivity

Recirculation system

Marine pond aquaculture

Technical Specifications:

sensor type

Photodissolved oxygen sensor

Range (DO)

0-50 mg / L

Accuracy (DO)

± 0.1 mg / L, 0-8mg / L

± 0.2 mg / L, 8-20 mg / L

± 10% of reading, 20-50 mg / L

Resolution, (DO)

0.01 mg / L

Response time, block

At a temperature of 25 ° C, T90 <45 seconds. T95 <60 seconds

Range, temperature

0-50 ° C (32-122 ° F)

Accuracy, temperature

Typical value ± 0.01 ℃

Resolution, temperature

0.01 ℃

Salt content compensation value

Fixed or real-time

Atmospheric pressure compensation value

Fixed or real-time

method

Annotation method 4500-0;

In-Situ method 1002-8-2009, 1003-8-200, 1004-8-2009

Environmental grade

pressure

150 psi at 0-50 ° C; 300 psi at 25 ° C

depth

689 ft (210m) at 25 ° C

Operating temperature

Sensor: 0-50 ° C (32-122 ° F)

Storage temperature

Cap: 1-60 ° C (33-144 ° F),

In manufacturer's container; sensor: 5-60 ° C (23-140 ° F)

Standards compliant

Harsh industrial environment, IEC61000-6-2; 2005

IP rating

IP-67 without cap; IP-68 with cap

Chemical grade

interference

Alcohol> 5%; hydrogen peroxide> 3%;

Sodium hypochlorite (commercial bleach)> 3%; gaseous sulfur dioxide; gaseous chlorine

Universal grade

Cap life

2 years typical use

Common output

Modbus (RS485), 4-20 mA, SDI-12

Power consumption

Maximum: 50mA at DC 12 V

cable length

4000ft (Modbus and 4-20 mA) or 200ft (SDI-12)

Standard mounting threads

1-1 / 4NPT

Origin: United States