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Safety

 

DANGER 

 MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON 

OR AROUND 

TRIPODS, TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, 

CROSSARMS, ENCLOSURES, ANTENNAS, ETC

.  FAILURE TO PROPERLY AND COMPLETELY ASSEMBLE, 

INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS, TOWERS, AND ATTACHMENTS, AND FAILURE TO HEED 
WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS INJURY, PROPERTY DAMAGE, AND 
PRODUCT FAILURE.  TAKE ALL REASONABLE PRECAUTIONS TO AVOID THESE HAZARDS.  CHECK WITH YOUR 
ORGANIZATION'S SAFETY COORDINATOR (OR POLICY) FOR PROCEDURES AND REQUIRED PROTECTIVE 
EQUIPMENT PRIOR TO PERFORMING ANY WORK. 

Use tripods, towers, and attachments to tripods and towers only for purposes for which they are designed.  Do not 
exceed design limits.  Be familiar and comply with all instructions provided in product manuals.  Manuals are 
available at www.campbellsci.eu or by telep44(0) 1509 828 888 (UK).  You are responsible for conformance 
with governing codes and regulations, including safety regulations, and the integrity and location of structures or land 
to which towers, tripods, and any attachments are attached.  Installation sites should be evaluated and approved by a 
qualified engineer.  If questions or concerns arise regarding installation, use, or maintenance of tripods, towers, 
attachments, or electrical connections, consult with a licensed and qualified engineer or electrician. 

General 

Prior to performing site or installation work, obtain required approvals and permits. Comply with all

governing structure-height regulations, such as those of the FAA in the USA.

Use only qualified personnel for installation, use, and maintenance of tripods and towers, and any

attachments to tripods and towers.  The use of licensed and qualified contractors is highly recommended.

Read all applicable instructions carefully and understand procedures thoroughly before 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 killed or sustain serious bodily injury if the tripod, tower, or attachments you are installing,

constructing, using, or maintaining, or a tool, stake, or anchor, come in contact with overhead or

underground utility lines.

Maintain a distance of at least one-and-one-half times structure height, or 20 feet, or the distance

required by applicable law, whichever is greater, between overhead utility lines and the structure (tripod,

tower, attachments, or tools).

Prior to performing site or installation work, inform all utility companies and have all underground utilities

marked.

Comply with all electrical codes.  Electrical equipment and related grounding devices should be installed

by a licensed and qualified electrician.

Elevated Work and Weather 

Exercise extreme caution when performing elevated work.

Use appropriate equipment and safety practices.

During installation and maintenance, keep tower and tripod sites clear of un-trained or non-essential

personnel.  Take precautions to prevent elevated tools and objects from dropping.

Do not perform any work in inclement weather, including wind, rain, snow, lightning, etc.

Maintenance 

Periodically (at least yearly) check for wear and damage, including corrosion, stress cracks, frayed cables,

loose cable clamps, cable tightness, etc. and take necessary corrective actions.

Periodically (at least yearly) check electrical ground connections.

WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL 
SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER 
INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS 
SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC. 

Содержание 237

Страница 1: ...237 Leaf Wetness Sensor Revision 01 2021 Copyright 1988 2021 Campbell Scientific CSL I D 506...

Страница 2: ...under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs can be give...

Страница 3: ...cell phones and aerials may also not be applicable according to your locality Some brackets shields and enclosure options including wiring are not sold as standard items in the European market in some...

Страница 4: ...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 cl...

Страница 5: ...nsor Preparation 4 7 2 Sensor Deployment 4 7 3 Wiring to Datalogger 5 7 4 Datalogger Programming 6 7 4 1 Measurement of Vs Vx 6 7 4 2 Calculating Sensor Resistance 7 8 Operation 7 8 1 Calculating Wet...

Страница 6: ...Table of Contents ii 7 2 Measurement Instructions Parameters Results 7 9 1 Symptom Causes 9 CRBasic Examples B 1 CR1000 Program Example B 1 B 2 CR200 X Program Example B 1...

Страница 7: ...rubber This compound was chosen for its resistance to temperature extremes moisture and UV degradation However this jacket will support combustion in air It is rated as slow burning when tested accor...

Страница 8: ...ocessing will be required to determine parameters such as the percent of time wet Section 8 1 Calculating Wet Time Fraction p 8 4 After selecting the sensor click Wiring Diagram to see how the sensor...

Страница 9: ...Scientific supplies the sensor unpainted because individual modifications will vary with the application The paper listed in Section 10 References p 9 describes the effects of paint colour and sensor...

Страница 10: ...in plant disease and other applications Besides providing some protection for the gold plated electrodes this paint allows tiny water droplets to spread and bridge the electrodes Gillespie and Kidd1...

Страница 11: ...uit schematic of the 237 TABLE 7 1 describes wiring to Campbell Scientific dataloggers FIGURE 7 2 237 Sensor Schematic TABLE 7 1 Wire Colour Function and Datalogger Connection Wire Colour Wire Functio...

Страница 12: ...ndix A Importing Short Cut Code Into CRBasic Editor p A 1 Programming basics for CRBasic dataloggers are in the following section Complete program examples for select CRBasic dataloggers can be found...

Страница 13: ...pressed in k is calculated as follows Rs R2 Vs Vx R2 R1 Therefore Rs k 1 Vs Vx 101 Except for the CR200 X Campbell Scientific also suggests including the following after the resistance calculation If...

Страница 14: ...er to Appendix B Example Programs p B 1 for information on calculating fraction of time wet with the CR200 X 8 2 Calibration A wet dry threshold of 150 k is used in Appendix B Example Programs p B 1 W...

Страница 15: ...ly cut if the mV200C mV25C or mV50C range code was used for the BrHalf instruction Another cause of these outputs is a highly conductive state 25 mV that occurs if the sensor is very wet with very ion...

Страница 16: ...can now be edited for additional refinement Once the file is edited with CRBasic Editor Short Cut can no longer be used to edit the program it created 2 To add the Short Cut wiring information into t...

Страница 17: ...V25 1 VX1 1 2500 True 0 250 1 0 Rs_kOhms 1 Vs_Vx 101 If Rs_kOhms 10000 Then Rs_kOhms 10000 EndIf CallTable Wetness NextScan EndProg CRBasic Example B 2 CR200 X Program Example CR200 X Series Datalogge...

Страница 18: ...lculate Time Fraction Wet at top of each hour If IfTime 0 60 Min Then Interval must match data table interval TimeFractionWet ScanIntervalWet ScanIntervalSum ScanIntervalWet 0 ScanIntervalSum 0 EndIf...

Страница 19: ...nfo campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India...

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