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TCAV

Averaging Soil

Thermocouple Probe

Revision: 7/18

Copyright © 1990 – 2018

Campbell Scientific, Inc.

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Summary of Contents for TCAV

Page 1: ...TCAV Averaging Soil Thermocouple Probe Revision 7 18 Copyright 1990 2018 Campbell Scientific Inc ...

Page 2: ...ducts to CSI CSI will return such Products by surface carrier prepaid within the continental United States of America To all other locations CSI will return such Products best way CIP port of entry per Incoterms 2010 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...

Page 3: ...ping 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 website at www campbellsci com repair A completed form must be either emailed to repair campbellsci com or faxed to 435 227 9...

Page 4: ...e beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers Use only manufacturer recommended parts materials and tools Utility and Electrical You can be kil...

Page 5: ... this document Use the PDF reader bookmarks tab for links to specific sections 1 Description 1 2 Using the TCAV with Soil Heat Flux Plates 1 2 1 Installation 2 2 2 Calculating Soil Heat Flux 3 Figures 1 1 TCAV Thermocouple Probe 1 2 1 Placement of Thermocouples and Heat Flux Plates 2 ...

Page 6: ...stored energy The probe is constructed with type E thermocouple wire chromel constantan and can be measured with one of the datalogger thermocouple measurement instructions TCSe or TCDiff TCDiff is recommended because it reduces noise and ground loop problems FIGURE 1 1 TCAV Thermocouple Probe 2 Using the TCAV with Soil Heat Flux Plates The TCAV is used in conjunction with soil heat flux plates to...

Page 7: ...ovel to cut a vertical slice in the soil and remove the soil to one side of the cut Try to keep the soil that is removed intact so that it can be replaced with as little disruption as possible The sensors are installed in the undisturbed face The depths are measured from the top of the soil A horizontal cut is made with a knife to install a heat flux plate The stainless steel tubes encasing the th...

Page 8: ...depth to heat flux plate m Cs is the soil heat capacity J m 3 C 1 and T is the time interval s One method of calculating Cs is to add the specific heat of the dry mineral soil Csd to that of the soil water Cw 4190 J kg 1 C 1 The values used for Csd and Cw are on a mass basis J kg 1 C 1 Cs the heat capacity of the moist soil on a volume basis J m 3 C 1 is Cs BD Csd W Cw This calculation requires si...

Page 9: ...t Asia Location Bangkok Thailand Email info campbellsci asia Website www campbellsci asia China Location Beijing P R China Email info campbellsci com cn Website www campbellsci com cn Spain Location Barcelona Spain Email info campbellsci es Website www campbellsci es Costa Rica Location San José Costa Rica Email info campbellsci cc Website www campbellsci cc UK Location Shepshed Loughborough UK Em...

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