Submersible, rugged, low-maintenance DO sensor
Overview
The CS511, manufactured by Sensorex, is a submersible, rugged, low-maintenance sensor that senses dissolved oxygen in a medium (typically water). It consists of a self-polarizing galvanic cell that generates a millivolt signal proportional to the amount of oxygen present in the measured medium (typically water).
Read MoreBenefits and Features
- In-line thermistor provides automatic temperature compensation
- Compatible with most Campbell Scientific dataloggers
The "-L" on a product model indicates that the cable length is specified at the time of order.
Images
Detailed Description
Oxygen diffuses through the CS511’s membrane onto a cathode that produces a chemical reaction. An electrical current is produced by this reaction, which is converted from microamps to millivolts by an in-line resistor. An in-line thermistor provides automatic temperature compensation.
Because the CS511 is shipped dry, DO electrolyte needs to be added before using the sensor. DO electrolyte as well as spare membranes are included in the sensor’s shipping kit.
Currently, the CS511 is Sensorex’s Model DO6400/T. Prior to June 2008, the CS511 was Sensorex’s Model DO6200/T. Programming, wiring, and most specifications are the same for these two sensors. However, they use different accessories and look different. Replacement parts remain available for the older DO6200/T. (See the Ordering Info on the web page.)
For an image of the older DO6200/T, see the retired version of the CS511 manual. Contact Campbell Scientific for more information.
Specifications
| Operating Temperature Range | 0° to 50°C |
| Measurement Range | 0.5 to 50 ppm (for O2) |
| Accuracy | ±2% |
| Output | 33 mV ± 9 mV (100% saturation); < 2 mV (0% saturation) |
| Response Time | 5 min from 100% to 0% oxygen |
| Minimum Water Velocity | 5 cm s-1 (2 in. s-1) across membrane |
| Minimum Submersion Depth | 6.35 cm (2.5 in.) |
| Pressure | 0 to 100 psig |
| Temperature Compensation | Automatic from 4° to 40°C |
| Probe Electrolyte | NaCl + glycerol (prevents freezing) |
| Diameter | 5.72 cm (2.25 in.) |
| Height | 17.78 cm (7 in.) from bottom of sensor to end of cable strain relief |
| Shipping Weight | 0.8 kg (1.75 lb) including sensor and shipping kit |
Compatibility
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
Data Loggers
| Product | Compatible | Note |
|---|---|---|
| CR1000 (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
DO Electrolyte
Because the CS511 is shipped dry, DO electrolyte needs to be added before using the sensor. DO electrolyte as well as spare membranes are included in the sensor’s shipping kit.
Documents
Brochures
Manuals
Frequently Asked Questions
Number of FAQs related to CS511-L: 5
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No. The cable is attached to the internal electronics. Removing them would be a violation of the warranty.
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Yes. This probe is completely submersible.
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If the probe will be shelved for a month or more, the electrode should be removed. When the sensor will be used again, use fresh electrolyte and a new membrane. Following these guidelines will enable the probe to be stored indefinitely.
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The CS511-L is a galvanic dissolved-oxygen probe that is designed to work in water. As O2 passes through the semipermeable membrane, the oxygen reacts with the electrolyte solution in the probe. As more oxygen becomes available, an electro-chemical process occurs, so that an increase in the mV output is recorded. The source of the oxygen can be through the air, water, or a liquid slurry. Soil is not very homogeneous, so the dissolved oxygen is not able to move freely.
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To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it.
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