Internal amplifier boosts signal for less interference
Overview
The CSIM11-ORP, manufactured by Wedgewood Analytical, measures oxidation reduction potential (ORP) of liquids. It can be submerged in water or inserted into tanks, pipelines, and open channels. The CSIM11-ORP is intended for non-pressurized systems and was not designed for applications above 30 psi. Please contact Campbell Scientific for recommendations on probes suitable for installations in pressurized pipes.
Read MoreBenefits and Features
- Internal amplifier boosts the signal, decreasing signal interference
- Titanium ground rod runs inside the outer body to eliminate ground loop errors
- Compatible with most Campbell Scientific data loggers
- Porous polytetrafluoroethylene (PTFE) liquid junction is less susceptible to clogging as compared to conventional reference junctions
- Plunger-style pH glass electrode allowing the probe to be mounted at any angle
Technical Description
The CSIM11-ORP is similar to the CSIM11, but includes a 0.2-in. platinum band wrapped around the glass electrode, which allows the CSIM11-ORP to respond to the electron density in the fluid. It has a plunger-style pH glass electrode that allows the CSIM11-ORP to be mounted at any angle. The probe's porous polytetrafluoroethylene (PTFE) liquid junction is less susceptible to clogging as compared to conventional reference junctions.
A titanium ground rod runs inside the PPS outer body to eliminate ground loop errors. An internal amplifier boosts the signal, decreasing signal interference. The amplifier is powered by two internal lithium batteries, and thus does not require any current from the datalogger. These batteries are designed to last the lifetime of the probe.
The reference solutions and bulb configuration are optimized for natural water applications. Alternate reference solutions and bulb configurations are available. Contact Campbell Scientific for pricing and availability.
Note: The CSIM11-ORP uses glass bulb technology which has a life expectancy of around 6 months to 2 years, depending on the conditions of the water.
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Compatibility
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Dataloggers
| Product | Compatible | Note |
|---|---|---|
| CR1000 (retired) | ||
| CR1000X (retired) | ||
| CR300 (retired) | ||
| CR3000 | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Data Logger Considerations
The CSIM11-ORP requires one differential analog input channel.
Specifications
| Output | Analog |
| ORP Range | -700 to +1100 mV |
| Operating Temperature Range | 0° to 80°C |
| Pressure Range | 0 to 30 psig |
| Accuracy | ±0.1% (over full range) |
| Impedance | < 1 Mohm (@ 25°C) |
| Reference Cell | Single Junction KCl/AgCl |
| Body Material | ABS |
| Wetted Materials | ABS, polytetrafluoroethylene (PTFE), Viton, glass, titanium |
| Cable Jacket Material | Polyurethane |
| Response Time | 95% of reading (in 10 s) |
| Drift | < 2 mV per week |
| Internal Lithium Battery Lifetime | 5 years (life of probe) |
| Diameter | 3.0 cm (1.2 in.) |
| Length | 17.8 cm (7.0 in.) |
| Weight | 0.5 kg (1 lb) with 4.57-m (15-ft) cable |
Resources and Links
Product Brochures
Manuals
FAQs for
Number of FAQs related to CSIM11-ORP-L: 36
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Each CS616 connects to a single-ended analog input channel, so a maximum of 16 CS616 reflectometers may be connected to the wiring panel of a CR1000. For more than 16, consider using a multiplexer such as the AM16/32B. With a multiplexer, it is possible to read 48 CS616 reflectometers using only three single-ended analog input channels of the CR1000.
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If a soil-specific calibration is performed, the CS616/CS625 may be used in soil with a maximum bulk electrical conductivity of 5 dS/m.
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No. The output is too fast to be measured on the pulse channel of a 21X or CR7.
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The sensitive volume of the CS616/CS625 varies with water content. A general guideline is that the sensitive volume is within approximately a 32 mm radius from each rod.
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Yes. The rugged design of the CS616/CS625 protects the probe electronics from water under these conditions. Many CS616/CS625 reflectometers have been working reliably in very wet conditions for more than ten years.
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Some customers have tried to use the CS616 or CS625 to measure the moisture content within a tree, but the calibration proved to be problematic. Campbell Scientific cannot provide any specific guidance for this application.
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Fine roots do not significantly affect the CS616/CS625 reading.
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The CS616/CS625 can measure volumetric water content over the entire range from completely dry to saturation. A soil-specific calibration will improve accuracy, especially in very dry soil.
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Yes, as long as the data logger can detect a ±700 mV square wave over a frequency range of 29 to 67 kHz.
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Yes. For program examples and guidance on using a multiplexer with one of these reflectometers, see the CS616 and CS625 instruction manual.
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