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In-Situ RDO SensorsOrion Star A MetersWQMP Multiparameter MeterWaterproof Field MetersPocket TestersColorimeters & Test KitsFilters & Flow CellsSolutions (Sachets & Bottles)
RDO PRO - Rugged Dissolved Oxygen Probe
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Robust and Reliable
- Inert construction will not corrode in high salinity samples
- Insensitive to common interferences such as hydrogen sulfide, chloride, ammonium
Simple Design
- Requires only 8 to 36 VDC power
- No costly external transmitters or controllers needed
- Easy probe configuration
- Calibration coefficients are loaded into the sensor cap
Cost Effective with Flexible Communication Options
- Includes complete instrument with a standard 10 metre cable
- Includes integral 4-20 mA, Modbus/ RS485, and SDI-12 signal outputs
- Eliminates the need for a separate, costly transmitter/controller
Accurate Results
- ±0.1 mg/L accuracy from 0 to 8 mg/L DO
- ±0.2 mg/L accuracy from 8 to 20 mg/L DO
- ±10% of reading from 20 to 50 mg/L DO
- Fast response to oxygen and temperature changes
- Consistent, reproducible results (< 0.05 mg/l reproducibility)
Applications
- Aquaculture operations
- Dam discharge applications
- Flood control systems
- Municipal or industrial water and wastewater treatment plants
- River and stream gauging and control
- Real-time remediation systems—pump and treat
EPA Recommends Approval of In-Situ® RDO® Optical DO Methods
The U.S. EPA has granted nationwide approval to three In-Situ RDO optical dissolved oxygen (DO) methods under the Alternate Test Procedure (ATP) process. These methods can be used in the measurement of Biochemical Oxygen Demand (BOD), Carbonaceous Biochemical Oxygen Demand (CBOD), and Dissolved Oxygen (DO) under the US Clean Water Act.
For more information please read:
In-Situ RDO Technology Outperforms Traditional Methods - EPA Recommends Approval
In-Situ RDO Frequently Asked Questions
A summary of the results submitted to the EPA are available in a white paper prepared by Edward Askew PhD:
In-Situ RDO Methods for Analysis of BOD, CBOD, and DO
Go to RDO PRO Download Page for:
• Technical Specifications
• Manuals
• Accuracy and Calibration
• Applications and Case Histories
• and more!
For more details:
Download as PDF
RDO PRO Probe Options
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The RDO PRO Probe can be purchased with 10m of cable with stripped and tinned wire ends ready for connection to any process control or logging system. Alternatively, where customised cable lengths are required, the RDO sensor can be supplied with a twist-lock cable connector for attachment to any length of In-Situ Rugged Cable. For wiring and other communication instructions, download the following pdfs. RDO PRO Connections - Wiring connections for 4-20mA, SDI-12, RS485 Modbus or RS232 Modbus RDO PRO SDI-12 - Commands and responses |
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RDO PRO Communication Device Kit for PC
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The RDO PRO Communication Device Kit provides the link between your RDO® PRO sensor and your PC, passes power to the instrument, and allows for easy calibration. The unit is supplied complete and ready to use with USB connector, software CD and 9V battery. Use the communication device and software to: - Calibrate the RDO PRO sensor—both 1- and 2-point calibrations - Set fixed barometric and salinity compensation values - Change units for all parameters measured - Reset to default communication - Set up SDI-12 and analog communication protocols - Set up analog scaling - View live measurements - Update the logging rate The RDO PRO communication device is designed for short-term general purpose indoor use and carries a 90 day warranty. Battery Life: Calibrating: 100+ calibrations with a single battery Continuous use (1 reading/sec): Approx. 8 hours Monitoring (1 reading/15 min): Approx. 13 days No readings: 2 weeks when connected to an RDO PRO sensor |
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RDO PRO Rugged Cable (Non-Vented)
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This high quality non-vented polyurethane 6 core Rugged Cable is customised with different connectors and to specified cable lengths. For use with the RDO Pro, one end must be fitted with a titanium twist-lock connector for connection to the RDO Probe. The other end can also be fitted with a twist-lock connector or with stripped and tinned wires. When ordering, choose: - Connectors required - e.g. i.e. Twist-lock at both ends or or stripped and tinned at one end - Length of cable required For more information including reel options for portable use, see cable and accessories. For information on use and care of cable with twist-lock connections, please download the following pdf file. |
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RDO Pro Sensor Cap Replacement Kit
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The RDO® sensor cap has a life of 24 months from the date of manufacture, or 12 months from the first reading, whichever comes first. To guarantee accuracy and a full 12-month working life, the customer should store the cap in its factory packaging prior to use, and install by the date printed on the label. The RDO sensor cap is very robust and resistant to damage. A maximum storage time of 12 months prior to installation is recommended so that a full 12 months of cap usage is achieved. It is not advisable to stock a large quantity of replacement caps, unless your monitoring conditions necessitate this. Caps are made-to-order. Typically, the cap will be delivered within 5-7 days from its manufacture date. Download the following pdf for replacement kit contents and instructions. |
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RDO PRO Calibration Kit and Accessories
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RDO® PRO process dissolved oxygen sensors are fast and easy to calibrate. The calibration kit allows you to perform a 1-point calibration at 100% saturation or a 2-point calibration at 100% and 0% saturation. The kit contains: - Calibration and storage chamber - Calibration cap - Storage cap - Sodium sulfite For kit contents and instructions, download the following pdf. |
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RDO Pro Sensor Nose Replacement Kit
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Replacement Sensor Noses are available if required. Download the following pdf for parts information and instructions. |
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RDO Pro Sensor O-ring Replacement Kit
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A set of spare / replacement o-rings for the sensor body, nose cap and sensor cap. Download the following pdf for parts list and instructions. |
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