Campbell-scientific ST350 Strain Transducer for Structural Testing Manuel d'utilisateur Page 1

ST350 Strain Transducer2/08 Copyright © 2008Campbell Scientific, Inc.

Section 3. Sensor Alignment and Installation 3” SURFACE PREP. LOCATIONS FIGURE 3-2. Surface Preparation - Location 3.2 Installation Once surface

Section 3. Sensor Alignment and Installation 3.3 Adjusting Excessive Transducer Offset If it is determined that zeroing cannot be accomplished with

Section 3. Sensor Alignment and Installation 3-4

Section 4. Wiring 4.1 Initial Check-Out Upon receiving new transducers, it is important to check that they are in proper working order. Using an o

Section 4. Wiring 4-2 tension provides a positive output signal and compression a negative signal. If a tension force provides a negative signal (an

Section 5. Mounting of Sensor to Various Surfaces 5.1 General In most situations, other than reinforced concrete, the most efficient method of moun

Section 5. Mounting of Sensor to Various Surfaces For closest Loctite Distributor call: 1 (800) 243-4874. NOTE Once testing is complete, carefully lo

Section 5. Mounting of Sensor to Various Surfaces 5.2.2 Reinforced Concrete See “Instructions for Using ST350 Strain Transducer Extensions on Rein

Section 5. Mounting of Sensor to Various Surfaces - Tighten the washers against the concrete by twisting the nut with an open-end wrench. It is imp

Section 5. Mounting of Sensor to Various Surfaces - Slide the drilling jig over the stud and align it with the second hole location. - Drill the s

Warranty and Assistance The ST350 STRAIN TRANSDUCER is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship und

Section 5. Mounting of Sensor to Various Surfaces - When a transducer is attached to an extension it is significantly more vulnerable to damage. A

Section 5. Mounting of Sensor to Various Surfaces - If the Tab/Glue method is being used ensure that the area is clean of dust before installing the

Section 5. Mounting of Sensor to Various Surfaces 5-8

Section 6. Calibration and Validation Calibration is performed on each sensor prior to shipping from the Manufacturer and a Calibration Certificate

Section 6. Calibration and Validation 6-2

Section 7. Maintenance, Replacement Parts, and Repairs 7.1 Maintenance The ST350 Strain Transducer has been designed to minimize the amount of main

Section 7. Maintenance, Replacement Parts, and Repairs FIGURE 7-2. Proper Connection to Data Acquisition System for Tension and Compression Debris

Section 7. Maintenance, Replacement Parts, and Repairs transducer must have at least a one foot cable exiting the transducer body. This cable can be

Section 7. Maintenance, Replacement Parts, and Repairs 7-4

Section 8. Datalogger Programming This section is for users who write their own datalogger programs. A datalogger program to measure this sensor ca

ST350 Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab fo

Section 8. Datalogger Programming CallTable (MFGTRUSS) NextScan EndProg '***** Program End ***** 8.2 CR5000 Example 'CR5000 Example usi

Section 8. Datalogger Programming '\\\\\\\\\\\\\\\\\\\\\\\\\\\\ Bridge Blocks ////////////////////////////// 'BrFull(Dest,Reps,Range,DiffCh

Section 8. Datalogger Programming 8-4

Appendix A. Special Instructions for using ST350 A.1 Instructions for Using ST350 Strain Transducer Extensions on Reinforced Concrete Structures Sp

Appendix A. Special Instructions for using ST350 very heavy, we recommend that the gain level for the STS be set to 500. It should be noted that in m

Appendix A. Special Instructions for using ST350 4. Using an extension jig as seen in FIGURE A-1, insert a tab into slot. Set the transducer over t

Appendix A. Special Instructions for using ST350 from gage is used, the measurement from the hole closest to the cable exit to this hole is 24 inches

Appendix A. Special Instructions for using ST350 IMPORTANT: Once the extensions have been installed, the transducers are much more susceptible to dam

Appendix A. Special Instructions for using ST350 A-6 1965 57th Court North, Suite 106, Boulder, CO 80301-2826 Ph: 303.494.3230 Fax: 303-494-5027

Appendix B. ST350 Accuracy Verification B.1 Verifying the Accuracy of ST350 Strain Transducers B.1.1 Introduction Often, our customers like to ver

ST350 Table of Contents ii B. ST350 Accuracy Verification...B-1 B.1 Verifying the Accuracy of ST350 Strain Transducer

Appendix B. ST350 Accuracy Verification differences in load (truck) placement. Thus, one can expect that every field test can have an error of two m

Appendix B. ST350 Accuracy Verification Trying to measure the strain on a 2" wide strip of metal that is 1/8" thick and mounted as a canti

Appendix B. ST350 Accuracy Verification BDI addresses strain measurements on reinforced concrete is to use gage extensions, effectively amplifying th

Appendix B. ST350 Accuracy Verification Magnitude of Applied Loads: Calibration tests should always be run up near the maximum safe linear range of t

Appendix B. ST350 Accuracy Verification B-6

Appendix C. Calibration Sheets C.1 Example of Calibration Sheet — BDI Supplied FIGURE C-1. Bridge Diagnostics Calibration Sheet C-1

Appendix C. Calibration Sheets C-2 C.2 Example of Calibration Sheet — CSI Supplied Certificate of Calibration CUSTOMER: Company Name: Cam

Index A I Adjusting Excessive Offset... 3-3 Initial Checkout Procedure – ST350 ...4-1 Alignment ST3

Index S Sensor ST350 Adhesive Information... 5-1 Adjusting Excessive Offset ... 3-3 Ali

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Section 1. Introduction This manual provides information for interfacing the ST350 Strain Transducer to Campbell Scientific’s Dataloggers. Unless o

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbells

Section 1. Introduction 1-2

Section 2. Specifications Effective gage length: 3.0 in (76.2 mm). Extensions available for use on R/C structures. Overall Size: 4.375 in x 1.25 in

Section 2. Specifications 2-2

Section 3. Sensor Alignment and Installation 3.1 Alignment The BDI ST350 will only measure strain in the axis in which it is aligned with, therefor