Resides inside a weather-proof enclosure
Overview
The CS100 measures barometric pressure for the range of 600 to 1100 hPa (mBar). This range equates to from below sea level (as in a mine) up to 12,000 feet above sea level. Designed for use in environmental applications, the CS100 is compatible with all Campbell Scientific data loggers.
Read MoreBenefits and Features
- Optimized to mount in Campbell Scientific enclosures
- Low power consumption
- Three-year warranty
- 500 to 1100 hPa (mBar) and 800 to 1100 hPa (mBar) versions also available by special order—contact Campbell Scientific
- Integral switching circuit limits power consumption to measurement cycle
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Detailed Description
The CS100 is a Campbell Scientific version of Setra's model 278 barometer. It uses Setra’s Setraceram capacitive sensor and IC analog circuit to measure barometric pressure. The CS100 iincludes a 0.76 m (2.5 ft) cable and a terminal strip for data logger power and signal connections.
The CS100 is encased in a stainless-steel and polyester case fitted with an 1/8 in. barbed fitting for pressure connection. It includes an internal switching circuit that allows the data logger to power the barometer only during measurement, which reduces power usage.
Specifications
| Measurement Description | Barometric pressure |
| Signal Type/Output | Analog voltage |
| -NOTE- | 1 hPa = 1 mBar |
| Pressure Range | 600 to 1100 hPa |
| Long-Term Stability | ±0.1 hPa per year |
| Response Time | < 100 ms |
| Resolution | ±0.01 hPa |
| Excitation | 9.5 to 28 Vdc |
| Elevation | ~609.6 m (2,000 ft) below sea level (as in a mine) to 3,657.6 m (12,000 ft) above sea level |
| Accuracy |
|
| Linearity | ±0.4 hPa |
| Hysteresis | ±0.05 hPa |
| Repeatability | ±0.03 hPa |
| Signal Output | 0 to 2.5 Vdc |
| Warm-up Time | < 1 s |
| External Trigger Voltage |
|
| Current Consumption |
|
| Temperature Range | -40° to +60°C |
| Cable Diameter | 0.8 cm (0.3 in.) |
| Cable Length | 0.8 m (2.5 ft) |
| Dimensions | 9.1 x 6.1 x 2.5 cm (3.6 x 2.4 x 1.0 in.) |
| Weight | 135 g (4.8 oz) |
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 | ||
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Distributed Data Acquisition
| Product | Compatible | Note |
|---|---|---|
| Granite 6 |
Additional Compatibility Information
Data Logger Considerations
A 2.5-ft cable is supplied with the sensor for connection to the data logger. The cable connects to a control port, single-ended analog input terminal, 12 V power terminal, and ground terminal on the data logger.
Mounting
The CS100 is typically mounted next to the data logger inside an ENC12/14 or larger enclosure. The very small ENC100 is available for housing the CS100 separately, in its own enclosure.
Documents
Brochures
Manuals
Frequently Asked Questions
Number of FAQs related to CS100: 9
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Noisy measurements may be caused by several factors:
- The sensor was not allowed to warm up adequately.
- The sensor is placed in an electrically noisy environment, which makes other analog measurements noisy.
- The power supply for the sensor or station is dirty. (There is not a clean regulated voltage.)
-
Yes, but only if certain conditions are met:
- The sensor resides in a non-condensing environment.
- The vent tube accessing the high humidity environment is extremely well desiccated to keep any moisture from reaching the sensor’s components. Moisture in the sensor will damage the sensor, often to an un-repairable state.
-
Either the CS100 or the CS106 can fit inside an ENC100. For more information, refer to the Specifications information on the ENC100 product page.
-
In most cases, enclosures and buildings have enough little spaces for the pressure to stay at equilibrium with the outside pressure. Therefore, the sensor does not need to be vented to the outside. It is possible, however, that the rate at which the pressure equalizes is slowed by being in an enclosure, but the rate change usually is not noticeably significant.
If the sensor resides in an absolutely air-tight environment, and the pressure outside this environment needs to be measured, then the sensor will need to be vented to the outside. However, venting to the outside may change the rating of the enclosure or associated inside environment.
-
The manufacturer recommends calibration on a yearly basis. However, conformance to published standards or regulations may require this on a more frequent basis.
-
For a reading in millibars, the multiplier is 0.240, and the offset is 500. To convert the millibar reading to different units, add an equation to the code.
To correct the pressure to sea level, see the “Correcting Pressure to Sea Level” section in the CS100 instruction manual or in the CS106 instruction manual. Alternatively, use Short Cut for Windows to generate the program, and, when prompted, enter the appropriate site elevation.
-
Generally, these sensors are designed to measure the pressure of the environment where they are installed. The CS100 or CS106 can measure the air pressure within a snowpack if the enclosure is adequately sealed away from the snow while allowing the vent to have access to the snow. Note that it may be difficult to accomplish this.
-
It is possible that an older version of Short Cut is being used. Download the latest version of Short Cut.
If the latest version of Short Cut has already been downloaded, open the program.
- Go to Tools | Options and make sure that the Enable Creation of Custom Sensor Files box is checked.
- In the Generic Measurements folder, right-click the type of measurement to be made for the sensor, and select Create Custom Sensor.
- Set the fields according to the sensor’s specification, hide those fields that the user does not need to see after being set, and save the custom sensor file settings with the Save As button.
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