Monitors forest-fire factor; ideal for use with RAWS
Overview
The CS506 is a fuel moisture sensor that measures the moisture content of the 26601 10-hour fuel moisture stick. The 26601 emulates the moisture content of similarly sized twigs on the forest floor. The CS506/26601 combination is used to assess forest fire fuel and is often incorporated in our prewired or custom fire-weather stations.
Note: The image shows a CS506 fuel moisture sensor attached to a 26601 fuel moisture stick. The 26601 is purchased separately.
Read MoreBenefits and Features
- Compatible with most Campbell Scientific data loggers
- Companion product to CS205/107 fuel temperature sensor; can be mounted on the same stake
- Can automatically monitor changing fuel conditions without having to visit the measurement site
- Compatible telemetry options include spread spectrum radios, narrow-band radios, cellular phones, and satellite transmitters
Images
Similar Products
Detailed Description
The CS506 reports the status of small-diameter (10-hour) forest fire fuels as percent moisture by weight (1%=1 g water/100 g dry fuel). It consists of an epoxy-encapsulated electronics package that uses time-domain reflectometry (TDR) technology to measure the moisture content of the 26601 10-hour Fuel Moisture Stick. The sensor produces a ±0.7 Vdc square-wave frequency that is read using an analog or pulse channel on a Campbell Scientific data logger. The data logger then converts the frequency measurement to percent fuel moisture via a quadratic calibration.
Specifications
| Operating Range | 0 to 70% moisture content |
| Power Supply | 5 to 18 Vdc |
| Enable Voltage |
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| Current Consumption |
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| Output Signal | ±0.7 Vdc square wave (with an output frequency of approximately 31 to 58 kHz) |
| Dimensions | 10.16 x 6.35 x 1.91 cm (4 x 2.5 x 0.75 in.) |
| Weight | < 0.5 kg (< 1 lb) |
Fuel Moisture Accuracy |
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| 0 to 10% Range |
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| 10 to 20% Range |
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| 20 to 30% Range |
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| 30 to 50% Range |
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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) | ||
| CR1000X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Fuel Temperature
The CS506 is typically measured alongside the CS205/107, which measures the fuel temperature.
Mounting
The 26817 Mounting Stake is often used to mount the CS506/26601 with the CS205/107. This stake places the probes twelve inches above the forest floor. Because the probes are mounted parallel to each other, shadowing is minimized. Cable ties are included for securing the cables to the side of the stake.
Data Logger Considerations
Programming
The CS506 produces a ±0.7-Vdc square-wave frequency that is read using an analog or pulse channel on a Campbell Scientific data logger. The data logger then converts the frequency measurement to percent fuel moisture via a quadratic calibration.
Documents
Frequently Asked Questions
Number of FAQs related to CS506-L: 2
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For descriptions and illustrations (with part numbers) of the various instruments used in measuring fuel temperature and moisture, see the "Remote Measurements" brochure.
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Both the 26601 10-Hour Fuel Moisture Stick (used with the CS506-L) and the CS205 10-Hour Fuel Temperature Stick (used with the 107-L) can be easily replaced in the field with a Phillips screwdriver and an adjustable wrench.
The dowels should be replaced each spring; more frequent replacements may be required in some environments. The more wet/dry cycles the dowels experience, the more frequently they will need to be replaced.
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