CS506 Fuel Moisture Sensor
Contents
1. a TE CAMPBELL SI SCIENTIFIC WHEN MEASUREMENTS MATTER CS506 Fuel Moisture Sensor IVANVIA GAS Issued 8 9 15 Copyright 1998 2015 Campbell Scientific Inc Printed under licence by Campbell Scientific Ltd CSL 892 Guarantee This equipment is guaranteed against defects in materials and workmanship This guarantee applies for twelve months from date of delivery We will repair or replace products which prove to be defective during the guarantee period provided they are returned to us prepaid The guarantee will not apply to e Equipment which has been modified or altered in any way without the written permission of Campbell Scientific e Batteries e Any product which has been subjected to misuse neglect acts of God or damage in transit Campbell Scientific will return guaranteed equipment by surface carrier prepaid Campbell Scientific will not reimburse the claimant for costs incurred in removing and or reinstalling equipment This guarantee and the Company s obligation thereunder is in lieu of all other guarantees expressed or implied including those of suitability and fitness for a particular purpose Campbell Scientific is not liable for consequential damage Please inform us before returning equipment and obtain a Repair Reference Number whether the repair is 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 a2. 009620 Mounting Kit The CS506 009619 is typically mounted with the CS205 107 using the 009620 Mounting Kit Figure 6 1 and Figure 6 2 The kit s bracket places the probes in a horizontal position CS205 10 Hour Fuel Temperature Stick 009619 Ponderosa Pine Dowel Sg CAUTION CS506 Fuel Moisture Sensor 107 Temperature Probe Phillips head Screws Cable Ties Copper Stake Figure 6 1 Front view of the 009620 fuel moisture temperature mounting Stake 1 Choose a site that is representative of the forest floor duff layer 2 Carefully hammer the copper stake into the ground so that it is secure and vertical 3 Place the mounting bracket on the copper stake so that the probes will be approximately 30 cm 12 in above the ground and pointing south northern hemisphere or north southern hemisphere 4 Tighten the nuts on the U bolts 5 Insert the CS506 electronics into the bracket 6 Secure the 009619 10 hour fuel moisture stick to the CS506 using the Phillips screws Wear gloves to avoid touching the dowel with your bare hands Your hands can contaminate the dowel with oils and dirt that can affect the measurements User Manual 009619 Ponderosa Pine Dowel CS506 Sensor Mii AO 1 AM jp 7 y dl 1 _ I E YA y CS205 RA i E Li Stick Compression Cable Fitting Tie 107 Temperature Probe Figure 6 2 Back view of the 009620 fuel moisture temperature mountin
3. CS506 output is essentially a square wave with an amplitude of 0 7 Vdc The frequency of the square wave output ranges from approximately 31 to 58 kHz Its output period ranges from 17 to 32 us 9 6 Specifications Features User Manual e Companion product to CS205 107 fuel temperature sensor can be mounted on the same stake e Can automatically monitor changing fuel conditions without having to visit the measurement site e Compatible telemetry options include spread spectrum radios narrow band radios cellular phones and satellite transmitters e Compatible with Campbell Scientific CRBasic dataloggers CR6 CR800 CR850 CR1000 CR3000 and CR5000 Fuel moisture accuracy with a new stick range 0 to 10 10 to 20 20 to 30 30 to 50 Range Power Supply Enable voltage Current usage Output signal Weight Dimensions Dowel Electronics 90 of all measurements rms error 1 25 0 74 2 00 0 90 3 40 1 94 4 11 221 0 to 50 5 Vdc minimum to 18 Vdc maximum off at 0 V lt 1 Vdc on at 5 V gt 4 Vdc maximum 18 Vdc 65 mA active 45 uA quiescent 0 7 V square wave with an output frequency of approximately 31 to 58 kHz lt 0 5 kg lt 1 Ib 1 3 cm 0 5 in diameter 50 8 cm 20 in long 10 2 x 6 4 x 1 9 cm 4 x 2 5 x 0 75 in The above accuracy is a static accuracy derived at slow changing conditions with experimental data for the CS505 Installation 6 1
4. ERY 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 Contents PDF viewers These page numbers refer to the printed version of this document Use the PDF reader bookmarks tab for links to specific sections Te INTOdUCH ON rn 1 2 Cautionary Statement ccccssesesseeeeeeeeeeeneeeees 1 3 Initial INSPECTION oncocncocnccconenanenancnancnancnanenancnanenannns 1 4 OVeVIeW ns 1 4 1 Dowel Selec canili 2 42 CS506 Measurement Technique u a 2 Du SPecilicaliONS iii 3 8 Instalatora nadi 3 6 1 009020 MOUn EIS Kits 3 Gs 11 01 a E ES E E RRESCLELLEIEENEELR 5 6 3 Datalogger Prostammins nu 6 Ta Maintenance aras 6 Appendix A Example Program 2u02u0a00 00000nannnnun nun ann nun nnnnn A 1 A l CRI1000 Programming Figures 6 1 Front view of the 009620 fuel moisture temperature mounting stake 4 6 2 Back view of the 009620 fuel moisture temperature mounting stake 5 Table Gal tS 0G Winnie 5 CS506 Fuel Moisture Sensor 1 Introduction The CS506 fuel moisture sensor measures the moisture content of the 009619 10 hour fuel moisture stick The 009619 emulates the moisture content of similarly sized twigs on the forest floor The CS506 009619 com
5. bination is used to assess forest fire fuel and is often incorporated in our prewired or custom fire weather Stations NOTE This manual provides information only for CRBasic dataloggers It is also compatible with our retired Edlog dataloggers For Edlog datalogger support see an older manual at www campbellsci com old manuals or contact a Campbell Scientific application engineer for assistance 2 Cautionary Statements e READ AND UNDERSTAND the Precautions section at the front of this manual e Avoid touching the dowel of the 009619 fuel moisture stick with your bare hands Your hands can contaminate the dowel with oils and dirt that can affect the measurements 3 Initial Inspection e Upon receipt of the CS506 and 009619 inspect the packaging and contents for damage File damage claims with the shipping company e The model number and cable length are printed on a label at the connection end of the cable Check this information against the shipping documents to ensure the expected product and cable length are received 4 Overview Traditionally the standard fuel moisture stick consists of a rack of four 0 5 inch diameter ponderosa pine dowels The resulting rack is about 20 inches long with an oven dry weight of 100 grams The characteristic time constant of the rack is 10 hours The rack is mounted 12 inches or about 30 centimetres above the forest floor The rack is left outside continually exposed to the same conditions as f
6. ccompanied by a purchase order Quotations for repairs can be given on request It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment in support of this policy a Declaration of Hazardous Material and Decontamination form will be issued for completion When returning equipment the Repair Reference Number must be clearly marked on the outside of the package Complete the Declaration of Hazardous Material and Decontamination form and ensure a completed copy is returned with your goods Please note your Repair may not be processed if you do not include a copy of this form and Campbell Scientific Ltd reserves the right to return goods at the customers expense Note that goods sent air freight are subject to Customs clearance fees which Campbell Scientific will charge to customers In many cases these charges are greater than the cost of the repair E CAMPBELL SCIENTIFIC Campbell Scientific Ltd 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk www campbellsci co uk PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc primarily for the North American market Some spellings weights and measures may reflect this origin Some useful conversion factors Area lin square inch 645 mm Mass 1 oz oun
7. ce 28 35 g 1 Ib pound weight 0 454 kg Length 1 in inch 25 4 mm 1 ft foot 304 8 mm Pressure 1 psi Ib in 68 95 mb 1 yard 0 914 m 1 mile 1 609 km Volume 1 UK pint 568 3 ml 1 UK gallon 4 546 litres 1 US gallon 3 785 litres In addition while most of the information in the manual is correct for all countries certain information is specific to the North American market and so may not be applicable to European users Differences include the U S standard external power supply details where some information for example the AC transformer input voltage will not be applicable for British European use Please note however that when a power supply adapter is ordered it will be suitable for use in your country Reference to some radio transmitters digital 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 cases alternatives are offered Details of the alternatives will be covered in separate manuals Part numbers prefixed with a FP symbol are special order parts for use with non EU variants or for special installations Please quote the full part number with the when ordering Recycling information At the end of this product s life it should not be put in commercial or domestic refuse but sent for recycling Any batteries contained within the prod
8. g stake 7 Insert the CS205 fuel temperature stick into the mounting stake s compression fitting 8 Insert the 107 temperature probe into the CS205 stick 9 Tighten the compression fitting so that it compresses the split wood and snugly holds the 107 probe 10 Use the ultraviolet light resistant cable ties included in the 009620 mounting kit to secure the cables One cable tie passes through the two slots in the bracket to loosely secure the cable of the CS205 107 Figure 6 2 The other two cable ties secure both cables to the copper stake 11 Figure 6 1 6 2 Wiring Connections to Campbell Scientific dataloggers are given in Table 6 1 Table 6 1 CS506 Wiring CR800 CR1000 Colour Description CR3000 CR5000 E G Single Ended Channel Universal Channel i 6 3 Datalogger Programming The CS506 has a built in enable circuit When voltage on the enable lead is less than Vdc the sensor is off When a voltage greater than 4 Vdc commonly 5 Vdc is applied to the enable lead the sensor is on The output signal is a 0 7 volt square wave The CRBasic instruction PeriodAvg is used to measure the period of the output signal in microseconds on a single ended analogue input channel Since fuel moisture does not change very rapidly the sensor is typically measured only once per hour After the period of the output signal in microseconds is measured it is converted to percent water content using one of two equati
9. iodA vg instruction CR1000 CR1000 Program for CS506 Declare Variables and Units Public FuelM Public PA_uS Units FuelM Units PA uS uSec Define Data Tables DataTable Table1 True 1 DataInterval 0 60 Min 10 Sample 1 FuelM FP2 Sample 1 PA_uS FP2 EndTable Main Program BeginProg Scan 10 Sec 1 0 CS506 Fuel Moisture Sensor measurement FuelM and PA us If IfTime 0 1 Hr Then PortSet 1 1 PeriodAvg PA uS 1 mV250 1 0 0 100 10 1 0 PortSet 1 0 If PA uS lt 17 7 Then FuelM 7 6298 PA uS 130 0904 Else FuelM 0 0406 PA uS 2 3 7685 PA uS 73 7974 EndIf EndIf Call Data Tables and Store Data CallTable Tablel NextScan EndProg CAMPBELL SCIENTIFIC COMPANIES Campbell Scientific Inc CSI 815 West 1800 North Logan Utah 84321 UNITED STATES www campbellsci com e info campbellsci com Campbell Scientific Africa Pty Ltd CSAf PO Box 2450 Somerset West 7129 SOUTH AFRICA www csafrica co za e sales csafrica co za Campbell Scientific Australia Pty Ltd CSA PO Box 8108 Garbutt Post Shop QLD 4814 AUSTRALIA www campbellsci com au e info campbellsci com au Campbell Scientific do Brazil Ltda CSB Rua Apinag s nbr 2018 Perdizes CEP 01258 00 Sao Paulo SP BRAZIL www campbellsci com br e vendas campbellsci com br Campbell Scientific Canada Corp CSC 14532 131 Avenue NW Edmonton Alberta TSL 4X4 CANADA www campbellsci ca e dataloggers campbellsci ca Campbell Scientific Centr
10. ngeability without individual calibration two additional sorts are performed on the dowels before they are selected to be used as a 009619 fuel moisture stick First the dowels are sorted dry by density to improve accuracy in the dry range of 0 to 15 Second the dowels are sorted after a 50 minute soak by weight to reduce probe to probe time response variation and minimize variability in the wet range of 20 to 50 Even after careful selection and sorting is performed to choose the most representative dowels the majority of measurement error is due to the variability of wood Wood s ability to transfer moisture is dependent on many variables primarily cell structure and wood resin content These variables change over time and after repeated wetting and drying cycles Only a small amount of overall measurement error is due to the electronic circuitry 4 2 CS506 Measurement Technique High speed electronic components on the circuit board are configured to oscillate when power is applied The output of the circuit is connected to the 009619 fuel moisture stick which acts as a wave guide The oscillation frequency and therefore output signal of the circuit is dependent on the dielectric constant of the media surrounding the stainless steel strips The dielectric constant is predominantly dependent on the water content of the wood Digital circuitry scales the oscillation frequency to an appropriate range that our dataloggers can measure The
11. o Caribe S A CSCC 300N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc e info campbellsci cc Campbell Scientific Ltd CSL 80 Hathern Road Shepshed Loughborough LE12 9GX UNITED KINGDOM www campbellsci co uk e sales campbellsci co uk Campbell Scientific Ltd France 3 Avenue de la Division Leclerc 92160 ANTONY FRANCE www campbellsci fr e info campbellsci fr Campbell Scientific Spain S L Avda Pompeu Fabra 7 9 Local 1 08024 BARCELONA SPAIN www campbellsci es e info campbellsci es Campbell Scientific Ltd Germany Fahrenheitstrasse 13 D 28359 Bremen GERMANY www campbellsci de e info campbellsci de Campbell Scientific Beijing Co Ltd 8B16 Floor 8 Tower B Hanwei Plaza 7 Guanghua Road Chaoyang Beijing 100004 P R CHINA www campbellsci com e info campbellsci com cn Please visit www campbellsci com to obtain contact information for your local US or International representative
12. ons Q t lt 17 7 7 62981 130 0904 Q t gt 17 7 0 040617 3 76851 73 7974 Where O is the percent of water by weight in the fuel moisture stick and t is period average in microseconds There is a slight disconnect in the two equations at 17 7 us where the linear equation gives a water content of 4 98 while the quadratic equation gives 5 68 A sudden small increase or decrease in the measured water content near 5 is to be expected as the datalogger changes from one equation to the other A complete CR1000 program can be found in Appendix A Example Program p A 1 Programming basics and programming examples for Edlog dataloggers are provided at www campbellsci com old manuals 7 Maintenance CAUTION Replace the 009619 Fuel Moisture Stick each spring more frequent replacements may be required in some environments The more wet dry cycles the dowel experiences the more frequently it will need to be replaced To change the 009619 Fuel Moisture Stick loosen the Phillips head screws and remove the old fuel moisture stick Replace it with the new 009619 Fuel Moisture Stick and tighten the screws Wear gloves to avoid touching the dowel of the 009619 fuel moisture stick with your bare hands Your hands can contaminate the dowel with oils and dirt that can affect the measurements Appendix A Example Program A 1 CR1000 Programming The following program measures a CS506 fuel moisture sensor using the CRBasic Per
13. orest fuels The rack absorbs and desorbs moisture from its surroundings As the rack transfers moisture its weight changes Periodic weighing of the rack determines changes in moisture content and provides an indication of moisture changes in forest fuels A disadvantage of the traditional weighing racks is that you cannot remotely monitor the changing fuel conditions Campbell Scientific s CS506 009619 combination supports this while providing similar measurements The CS506 consists of a printed circuit board encapsulated in a waterproof epoxy housing A shielded four conductor cable is connected to the circuit board to supply power enable the electronics and monitor the signal output The 009619 10 hour fuel moisture stick includes two stainless steel strips pressed into grooves carved in a carefully selected USFS standard ponderosa dowel Nylon tie wraps secure the dowel to the stainless steel strips The 009619 connects to the CS506 with two Phillips head screws Because the complete dowel surface is accessible for moisture exchange the response of the CS506 is similar to that of the traditional weighing rack 4 1 Dowel Selection The 009619 Fuel Moisture Stick uses the same dowel as used by the traditional weighing fuel moisture racks No artificial materials such as epoxy sealant are added to the dowel that would adversely influence its natural characteristics To optimize stick to stick repeatability and to allow stick intercha
14. s Utility and Electrical e 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 e 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 e Prior to performing site or installation work inform all utility companies and have all underground utilities marked e Comply with all electrical codes Electrical equipment and related grounding devices should be installed by a licensed and qualified electrician Elevated Work and Weather e Exercise extreme caution when performing elevated work e Use appropriate equipment and safety practices e 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 e Do not perform any work in inclement weather including wind rain snow lightning etc Maintenance e 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 e Periodically at least yearly check electrical ground connections WHILE EV
15. structions provided in product manuals Manuals are available at www campbellsci eu or by telephoning 44 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 e 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 e 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 e Read all applicable instructions carefully and understand procedures thoroughly before beginning work e Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers e 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 e Use only manufacturer recommended parts materials and tool
16. uct or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific Ltd can advise on the recycling of the equipment and in some cases Es arrange collection and the correct disposal of it although charges may apply for some items or territories For further advice or support please contact Campbell Scientific Ltd or your local agent E CAMPBELL SCIENTIFIC Campbell Scientific Ltd 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk www campbellsci co uk Precautions 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 in
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