Campbell CS100 Instruction Manual

CS100 Barometric

Pressure Sensor

Revision: 2/10

Copyright © 2002-2010

Campbell Scientific, Inc.

Warranty and Assistance

The CS100 BAROMETRIC PRESSURE SENSOR is warranted by
CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and
workmanship under normal use and service for twelve (12) months from date
of shipment unless specified otherwise. Batteries have no warranty.
CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to
repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective
products. The customer shall assume all costs of removing, reinstalling, and
shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL
SCIENTIFIC, INC. will return such products by surface carrier prepaid. This
warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products
which have been subjected to modification, misuse, neglect, accidents of
nature, or shipping damage. This warranty is in lieu of all other warranties,
expressed or implied, including warranties of merchantability or fitness for a
particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special,
indirect, incidental, or consequential damages.

Products may not be returned without prior authorization. The following
contact information is for US and International customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company
serves your country.

To obtain a Returned Materials Authorization (RMA), contact CAMPBELL
SCIENTIFIC, INC., phone [phone]. After an applications engineer
determines the nature of the problem, an RMA number will be issued. Please
write this number clearly on the outside of the shipping container.
CAMPBELL SCIENTIFIC's shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____
815 West 1800 North
Logan, Utah 84321-1784

For all returns, the customer must fill out a “Declaration of Hazardous Material
and Decontamination” form and comply with the requirements specified in it.
The form is available from our website at
completed form must be either emailed to [e-mail]
435-750-9579. Campbell Scientific will not process any returns until we
receive this form. If the form is not received within three days of product
receipt or is incomplete, the product will be returned to the customer at the
customer’s expense. Campbell Scientific reserves the right to refuse service on
products that were exposed to contaminants that may cause health or safety
concerns for our employees.

www.campbellsci.com/repair

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or faxed to

CS100 Table of Contents

PDF viewers note: These page numbers refer to the printed version of this document. Use
the Adobe Acrobat® bookmarks tab for links to specific sections.

1. Introduction..................................................................1

2. Specifications ..............................................................2

2.1 Performance..............................................................................................2

2.1.1 Performance for “Standard” Range Option ....................................2

2.1.2 Performance for “500 to 1100 mb” Range Option .........................2

2.1.3 Performance for “800 to 1100 mb” Range Option .........................2

2.2 Electrical...................................................................................................3

2.3 Physical..................................................................................................... 3

3. Installation....................................................................3

3.1 Venting and Condensation........................................................................3

3.2 Mounting ..................................................................................................3

4. Wiring............................................................................4

4.1 Datalogger Connection.............................................................................4

4.2 5-pin Screw Terminal Plug Connector.....................................................5

5. Programming ...............................................................5

5.1 Conversion Factors...................................................................................6

5.2 Multipliers and Offsets for Different Measurement Range Options.........6

5.3 Program Examples....................................................................................7

5.4 Output Resolution.....................................................................................9

6. Correcting Pressure to Sea Level ..............................9

7. Maintenance and Calibration....................................10

Figures

1. CS100 Barometric Pressure Sensor............................................................1

2. CS100 as removed from the box and closeup of yellow warning label......4

3. Connector Key Attached to 5-pin Screw Terminal Plug Connector...........5

Tables

1. Signal and Ground Connectors for CS100 .................................................4

2. Conversion Factors for Alternative Pressure Units ....................................6

3. Multipliers and Offsets...............................................................................6

4. Wiring for Example Programs....................................................................7

i

CS100 Barometric Pressure Sensor

1. Introduction

The CS100 is a capacitive pressure transducer that uses the Setra's electrical
capacitor technology for barometric pressure measurements over the 600 to
1100 millibar range. The transducer’s compact and rugged polyester housing
with stainless blackplate contains two closely-spaced, parallel, electrically­isolated metallic surfaces. One of the surfaces is essentially a diaphragm
constructed of a Setra’s proprietary compound of fused glass and ceramic
(Setraceram™) or a low-hysteresis material, such as 17-4 PH SS. The
diaphragm is capable of detecting a slight change in the applied pressure,
which is then converted to an analog voltage signal by Setra’s custom
Application Specific Integrated Circuit (ASIC). The analog signal generated
by the barometer can be directly measured by a Campbell Scientific datalogger,
such as 21X, CR7, CR500, CR510, CR10(X), CR23X, CR200(X) series,
CR1000, CR3000, CR800, CR850, CR5000, and CR9000(X).

The CS100 is supplied in the triggered mode, in which the datalogger switches
12 VDC power to the barometer before the measurement. The datalogger then
powers down the barometer after the measurements to conserve power.

Other measurement range options such as 500 to 1100 millibar, an d 800 to
1100 millibar are also available. Please contact Campbell Scientific, Inc. for
ordering these special versions.

FIGURE 1. CS100 Barometric Pressure Sensor

1