Campbell Scientific PWC100 User Manual

PWC100 Present Weather

Sensor Calibrator

Revision: 3/12

Campbell Scientific, Inc.

Warranty

“PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless otherwise specified in the corresponding Campbell pricelist or product manual. Products not manufactured, but that are re-sold by Campbell, are warranted only to the limits extended by the original manufacturer. Batteries, fine-wire thermocouples, desiccant, and other consumables have no warranty. Campbell's obligation under this warranty is limited to repairing or replacing (at Campbell's option) defective products, which shall be the sole and exclusive remedy under this warranty. The customer shall assume all costs of removing, reinstalling, and shipping defective products to Campbell. Campbell will return such products by surface carrier prepaid within the continental United States of America. To all other locations, Campbell will return such products best way CIP (Port of Entry) INCOTERM® 2010, prepaid. This warranty shall not apply to any products which have been subjected to modification, misuse, neglect, improper service, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied. The warranty for installation services performed by Campbell such as programming to customer specifications, electrical connections to products manufactured by Campbell, and product specific training, is part of Campbell’s product warranty. CAMPBELL EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Campbell is not liable for any special, indirect, incidental, and/or consequential damages.”

Assistance

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 (435) 227-9000. 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 "Statement of Product Cleanliness and Decontamination" form and comply with the requirements specified in it. The form is available from our web site at www.campbellsci.com/repair. A completed form must be either emailed to repair@campbellsci.com or faxed to (435) 227-9106. Campbell Scientific is unable to 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.

PWC100 Table of Contents

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

2. Operation and Use....................................................... 1

2.1 Operating Guidelines................................................................................1

2.2 Initial Configuration of the PWS100 for use of the Calibrator.................2

3. PWS Calibration........................................................... 2

3.1 Installing and Connecting up the Calibrator .............................................3

3.2 Starting the Tests ......................................................................................4

4. Cleaning Guide ..........................................................10

5. Calibrator Safety Guidelines.....................................10

6. Electrical Parameters ................................................11

6.1 PWC100 Voltages and Currents.............................................................11

6.2 Earth, 0 V and Transient Protection .......................................................11

Appendix

A. Assembly Guidelines.............................................. A-1

A.1 Assembly Guidelines .......................................................................... A-1

A.2 Connector Pin Outs............................................................................. A-2

Figures

2-1. PWS100 calibration disk constants .........................................................2

3-1. The PWS100 enclosure showing the LEMO connector used by the

calibrator ..............................................................................................3

A-1. Attaching the velocity disk................................................................ A-1

A-2. Attaching the visibility disk............................................................... A-1

A-3. Attachment of the velocity calibrator ................................................ A-2

PWC100 Present Weather Sensor Calibrator

1. Introduction

The PWC100 is a customer field calibration validation device for the PWS100.

The PWC100 calibrator system simulates particle and visibility data for the PWS100 allowing verification of the calibration constants held within the system.

The following features are checked by the calibrator:

• Particle velocity

• Particle size detection

• Laser beam uniformity

• Visibility range

• Component aging

The PWC100 will give a go/no go indication of the PWS100 calibration to show whether the instrument is within normal operating limits. If required, the PWC100 can be used to partially recalibrate the PWS100. That method is not described in this manual. Please contact Campbell Scientific for more details or refer to the PWS100 manual.

2. Operation and Use

2.1 Operating Guidelines

Please ensure that there are no obstructions between the PWS sensor heads before the tests are started.

Ambient temperature should be 20°C ± 10°C.

The test should not be performed in the following conditions:

• Do not perform the calibration when it is raining or during any other

precipitation event, such as snow, hail or drizzle.

• Do not perform the calibration when the local visibility is below

approximately 10,000 meters.

• Do not perform the calibration if there is a strong wind that could blow

debris into the sensing volume of the PWS.

The PWC100 is not suitable for long term outdoor use and is only designed to be exposed for the duration of the calibration test. Long term exposure to outdoor environmental conditions may cause damage to the unit.

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