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CS100 Barometric Pressure Sensor
Services Available
Repair No
Calibration Yes
Free Support No

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.

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Benefits 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
  • Accuracy refers to the root sum squared (RSS) of end point non-linearity, hysteresis, repeatability, and calibration uncertainty.
  • ±0.5 hPa (@ +20°C)
  • ±1.0 hPa (@ 0° to 40°C)
  • ±1.5 hPa (@ -20° to +50°C)
  • ±2.0 hPa (@ -40° to +60°C)
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
  • 0 Vdc (sleep mode)
  • 3 to 28 Vdc (operating mode)
Current Consumption
  • < 3 mA (active)
  • < 1 µΑ (sleep mode)
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

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Data Loggers

Compatible Note
CR1000 (retired)
CR1000X
CR300
CR3000 (retired)
CR310
CR350
CR6
CR800 (retired)
CR850 (retired)

Distributed Data Acquisition

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.

Related Documents

Articles and Press Releases

FAQs for

Number of FAQs related to CS100: 9

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  1. Why might measurements with a CS100 or CS106 be bouncing (noisy)?

    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.)
  2. What is the warm-up time for the CS100 or CS106?

    1 s.

  3. Can a CS100 or CS106 be used to measure pressure in an application at very high humidity without damaging the sensor?

    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.
  4. Does the CS100 or CS106 fit inside an ENC100 enclosure?

    Either the CS100 or the CS106 can fit inside an ENC100. For more information, refer to the Specifications information on the ENC100 product page. 

  5. Does the CS100 or CS106 need to be vented to the outside of an enclosure or building?

    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.

  6. How often should the CS100 or CS106 be factory calibrated?

    The manufacturer recommends calibration on a yearly basis. However, conformance to published standards or regulations may require this on a more frequent basis.

  7. What are the multiplier and offset values used with a CS100 or CS106?

    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.

  8. Can a CS100 or a CS106 be enclosed and used to measure air pressure within a snowpack?

    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. 

  9. If a device or sensor is not available for selection in the Short Cut program, how can it be added?

    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.

    1. Go to Tools | Options and make sure that the Enable Creation of Custom Sensor Files box is checked.
    2. In the Generic Measurements folder, right-click the type of measurement to be made for the sensor, and select Create Custom Sensor.
    3. 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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