RDO PRO-X Dissolved Oxygen Probe
RDO PRO-X Dissolved Oxygen Probe
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- Model: RDO PRO-X Dissolved Oxygen Probe
- MPN: RDOPRO
The RDO PRO-X Probe is EPA-approved for Clean Water Act programs, using optical technology to measure dissolved oxygen and temperature in demanding process environments. The RDO PRO-X Probe lets NPDES permit holders monitor influent, effluent and treatment processes, responding quickly to oxygen and temperature changes for more accurate results.
This durable probe requires no calibration, conditioning, or membranes. The sensor cap automates setup, storing calibration coefficients, serial number, and expiration date. When cap expires, simply snap it off and pop on a new one. Integrate with telemetry systems and HydroVu Data Services for real-time feedback on all of your water monitoring sites.
Features:
- Flexible communication protocols (4-20 mA, Modbus/RS485, SDI-12)
- Available in standard 10 m cable or twist-lock in custom lengths
- EPA-approved
- Most accurate DO probe on the market (up to ±0.1 mg/L)
- Doesn’t corrode in saline environments
- No interference from hydrogen sulfide, chloride, ammonium, or oils
- Automated sensor cap diagnostic alerts
- Requires only 8 to 36 VDC
Benefits:
- Simplify setup and monitoring – Flexible communication protocols connect to your existing controllers, SCADA, or PLCs.
- Accurate, reliable data – Resists abrasion and photobleaching, with automated calibration that prevents long-term drift.
- Easy maintenance – Smart sensor cap stores vital information and alerts you when it’s time to replace.
- 24/7 data access – View and filter data easily using telemetry systems and HydroVu Data Services
Includes:
- RDO PRO-X probe (option of 10 m stripped-and-tinned cable or twist-lock connector)
- RDO sensor cap
- Calibration cup
- Manual
| Specifications | |
| Accuracy, DO | ±0.1 mg/L, 0 to 8 mg/L; ±0.2 mg/L, 8 to 20 mg/L; ±10% of reading, 20 to 50 mg/L |
| Accuracy, temperature | ±0.1° C typical |
| Barometric compensation | Fixed or real-time capable |
| Cable Lengths | Modbus and 4-20 mA: Up to 1,219 m (4,000 ft)<br> SDI-12: Up to 61 m (200 ft) |
| Communication output | Modbus/RS485, SDI-12, 4-20 mA |
| Compliance | Heavy industrial, IEC 61000-6-2:2005 |
| Depth | 210 m (689 ft) @ 25° C |
| Interferences | Alcohols >5%; hydrogen peroxide > 3%; sodium hypochlorite (commercial bleach) > 3%; gaseous sulfur dioxide; gaseous chlorine. Do not use in organic solvents (e.g., acetone, chloroform, methylene chloride, etc.), which may swell the sensing element (foil matrix) and destroy it. |
| Internal Mounting Thread | 1-1/4 NPT |
| IP Rating | IP-67 with cap off; IP-68 with cap installed |
| Methods | EPA-approved In-Situ® RDO methods 1002-8-2009,<br> 1003-8-2009, 1004-8-2009<br> Standard Methods 4500-O |
| Operating temperature | Probe: 0° to 50° C (32° to 122° F) |
| Power Consumption | Maximum: 50 mA at 12 VDC |
| Power Requirements | 8 to 36 VDC |
| Pressure | 150 psi from 0° to 50° C; 300 psi @ 25° C |
| Range, DO | 0 to 50 mg/L |
| Range, temperature | 0° to 50° C (32° to 122° F) |
| Resolution, DO | 0.01 mg/L |
| Resolution, temperature | 0.01° C |
| Response time, cap | T90: <45 sec. T95: <60 sec. @ 25° C |
| Salinity compensation | Fixed or real-time capable |
| Sensor Type | Optical DO probe uses RDO-X Sensor Cap |
| Storage temperature | Sensor cap: 1° to 60° C (33° to 140° F), in factory container Probe: -5° to 60° C (23° to 140° F) |
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