Hanna Instruments SUCTION LYSTIMETER 83900 User's Manual
Contents
1. 4584 2942 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 7118 Fax 6291 6906 South Africa Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 2739 2983 Thailand Tel 66 2619 0708 Fax 66 2619 0061 United Kingdom Tel 01525 850 855 Fax 01525 853 668 USA Tel 401 765 7500 Fax 401 765 7575 For e mail contacts and complete list of Sales and Technical offices please see www hannainst com MAN83900 09 052. cb cen tibar should be drawn For better monitoring the soil solution composition throughout an entire growth pe riod of crops at least two lysimeters should be installed in the root zone of a represen tative plant one at the upper part and the other in the lower part of the root zone For better accuracy and repeatability of results it is recommended to replicate the above described installation in at least two more locations FUNCTIONAL DESCRIPTION 1 Rubber cap 2 Soil solution sampler tube 3 Porous ceramic tip 4 30 ml syringe pump 5 Rubber suction capillary 6 Finger clamp OPERATIONAL GUIDE Assemble the unit by inserting the rubber capillary in the samplertube and closing with the rubber cap Check that the rubber capillary is into the ceramic tip then remove the plastic bag from the ceramic part and follow the activation procedure explained below Important NEVER TOUCH THE CERAMIC SENSITIVE PART WITH YOUR FINGER BEFORE AND DURING THE ACTIVATION PROCESS ACTIVATION e Fill approximately 1 3 of the lysimeter tube with the sup plied cleaning solution e Draw the syringe piston all the way back and attach the syringe to the rubber capillary e Close the tube with the rubber cap open the finger clamp and push the syringe piston e Pinch the finger clamp and wait until the solution seeps through the porous ceramic tip Draw the
3. rest ofthe solu tion from the sampler tube and dispose of it e The lysimeter is now sterile free of air bubbles and ready for insertion into the ground e Keep the ceramic tip moist until the lysimeter is inserted into the soil Protect it with a plastic bag INSTALLATION Location e The selected location plant for installing the lysimeter should be representative ofthe en tire field For better accuracy and repeatability of re sults install at list 3 couples of lysimeters see below per each area to be monitored Operation e Place the lysimeter inside the root zone It is suggested to install at least two lysimeters one at the upper and the other in the lower layer of the root zone e The recommended distance from the drip source depends on the soil type sandy soil 5 cm medium soil 10 cm heavy soil 15 cm e Drill a hole in the ground at the selected location and insert the HI 83900 while pushing and rotating it around its axis Atter the proper depth is reached compress the surrounding soil while paying attention that the soil is tightly in contact with the ce ramic tip SAMPLE EXTRACTION Warning Never operate the lysimeter in the following conditions AN e immediately after irrigation otherwise the extracted solution will be the irrigation water and not the soil solution before the irrigation water reaches the depth of the ceramic tip because necessary tension can never be obtained if the
4. sensitive tip is dry e Sample extraction needs a vacuum of approxi mately 60 cb centibar to be created inside the sampler tube Connect the syringe to the open close rubber capillary open the finger clamp and ES gt draw the syringe piston all the way back 30 ml Pinch the finger clamp and disconnect the syringe To obtain a vacuum of about 60 cb cen fa tibar perform these operations once with the Joey HI 83900 30 model twice with HI 83900 oe 60 and 3 times with HI 83900 90 cE e Before drawing out the soil solution allow a time interval which depends on the soil type gt w Tuff or sandy soil 30 minutes Light soil 1 hour Medium soil 2 to 4 hours Heavy soil 3 to 12 hours e To collect the soil solution connect the syringe to the rubber capillary open the finger clamp and the rubber cap then draw the syringe piston all the way back 30 mL e Hold the piston until all the solution is sucked into the syringe then disconnect the syringe from the capillary and leave the finger clamp open e Transfer the soil solution into the sampling vessel and immediately perform tests AN e Never draw the syringe piston more than specified times otherwise the soil moisture tension will be broken In addition when a very high vacuum is created at the soil solution the test results will be unreliable due to a non aerobic process e After drawing out the solution the lysimeter should no
5. Instruction Manual HI 83900 Suction Lysimeter ii hannainst com Dear Customer Thank you for choosing a HANNA instruments product Please read this instruction manual carefully before using the equipment It will pro vide you with the necessary information for a correct use For additional technical information do not hesitate to e mail us at tech hannainst com or see the back cover for our worldwide contact list TABLE OF CONTENTS PRELIMINARY EXAMINATION o oooococccoooooonnncnnnnnncccnccnonononnnnnnnnnnnnncnnnccnicccinnnns 3 ORDERING INFORMATION zunachst nun een 3 WARRANTY GSPRUTERRERERLIEVEERHRNERTEIEFTFERERERTELTTTOETERDINERERERRREFERTERTTEFNSENNERTIERERRREERTERR 3 GENERAL USE OPERATING PRINCIPLES cooooooooocococcccccccccccocooanannnnnononnncncncnnos 4 FUNCTIONAL DESCRIPTO Nico iria an 5 OBERATIONAL U DE se ee len AEE 6 ACTIVATION sense ee uhren 6 INSTALLATION Ana id 7 SAMPLEEXTRACTON ses kennen seen rare loca 8 SUGGESTIONS FOR SAMPLE ANALYSIS u messen 9 MAINTENANCE AND STORAGE unse ee ae 10 TROUBLESHOOTING ix sss sctse saute aussen 11 Hanna Instruments reserves the right to modify the design construction and appearance of its products without advance notice 2 PRELIMINARY EXAMINATION Remove the equipment from the packing material and examine it carefully to make sure that no damage has occurred during shipping If there is any noticeable dam age immediately notify your dealer Each kit in
6. c tip gt gt gt Otherwise push it downwards through the rubber cap Moreover the following conditions can cause inability to extract soil solution e The water has not reached the ceramic tip This can occurs when the lysimeter is positioned at a depth of 40 50 cm gt gt gt Delay time of operation e Water reaches the depth of the ceramic tip very slowly also measured in days for very heavy or compact soils In this case the lysimeter should not be installed in low depths such as 50 60 cm gt gt gt Use the lysimeter in depths of only 15 30 cm gt gt gt Install the lysimeter in a different location where the soil is not too compact e Fully developed plants can compete with the lysimeter for water and may be not possible to extract the solution It can also happen that the solution not collected in time will be extracted back from the lysimeter by the plant gt gt gt Operate earlier e The water distribution is not uniform gt gt gt Check the irrigation water flow e The soil is dry due to an irrigation with insufficient amount of water gt gt gt Irrigate again increasing the amount of water SALES AND TECHNICAL SERVICE CONTACTS Australia Tel 03 9769 0666 Fax 03 9769 0699 China Tel 10 88570068 Fax 10 88570060 Egypt Tel amp Fax 02 2758 683 Germany Tel 07851 9129 0 Fax 07851 9129 99 Greece Tel 210 823 5192 Fax 210 884 0210 Indonesia Tel 21 4584 2941 Fax 21
7. cludes e x sampler tube ending with porous ceramic tip e 1 x capillary rubber tube with rubber cap and finger clamp e 1 x cleaning solution starter kit 120 mL bottle e x30 mL syringe instruction manual Note Save all packing materials until you are sure that the equipment functions correctly Any damaged or defective items must be returned in their original packing materials together with the supplied accessories ORDERING INFORMATION HI 83900 30 Suction lysimeter 30 cm 0 98 tube HI 83900 60 Suction lysimeter 60 cm 1 97 tube HI 83900 90 Suction lysimeter 90 cm 2 95 tube HI 83900 25 Cleaning solution replacement kit 500 mL bottle WARRANTY This equipment is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions This warranty is limited to repair or replacement free of charge Damages due to accident misuse tampering or lack of prescribed maintenance are not covered If service is required contact the dealer from whom you purchased the instrument If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be returned to Hanna Instruments first obtain a Returned Goods Authorization number from the Customer Service department and then send it with shipping
8. costs prepaid When shipping any instrument make sure it is properly packaged for complete pro tection GENERAL USE OPERATING PRINCIPLES The HI 83900 suction lysimeter is built with a porous ceramic cap connected to a transparent tube for soil solution extraction A rubber capillary is inserted in the tube passing through a rubber cap and reaching the ceramic tip The lysimeter is an ideal tool for collecting soil solution samples and then perform quantitative chemical analysis In this way the operator can easily monitor the level of fertilization nutrients such as ammonia nitrate phosphorous and potassium The ceramic tip of the lysimeter can be used in all types of soil and it is made of sinterized material that does not react with nutrient elements The soil solution there fore is not affected by the chemical composition of the ceramic cap and the test results are always precise and reliable Use our chemical test kits or photometers for accurate analysis see the HANNA instruments general catalog or visit our web site at www hannainst com for a complete list of equipments reagents and accessories The HI 83900 allows to extract a solution from the soil by creating a vacuum nega tive pressure or suction inside the sampler tube that exceeds the soil water tension This will establish an hydraulic gradient for the solution to flow through the porous ceramic cap and into the lysimeter tube Typically a vacuum of about 60
9. r Agriculture HI 38078 _ kit for SAR Sodium Absorption Ratio test HI 3896 professional kit for testing traces low medium and high ranges of nitrogen phosphorus and potassium and pH from 4 to 9 MAINTENANCE AND STORAGE The lysimeter should remain installed for all the crop season and the ceramic cap must be sterilized against fungi and algae at least every two months without remov ing it from the ground e Fill the syringe with the supplied cleaning solution approximately 10 ml e With the finger clamp open inject the solution into the lysimeter tube for about 10 seconds Draw up the rest of the solution and dispose of it AN Do not perform soil solution tests immediately after sterilization In seasonal cropping and during winter remove the lysimeter from its installation before the first frost e Immediately after removing the lysimeter immerse the tip in the cleaning solution over night e Let the solution drain through the porous ceramic cap gravity flow e Air dry the lysimeter and store it Warning AN Do not let the ceramic cap dry while dirty e Do not store at temperatures below freezing because some water may remain trapped inside the porous ceramic TROUBLESHOOTING If the lysimeter is unable to extract soil solution first check that e The soil is tightly in contact with the porous ceramic cap gt gt gt Compress the surrounding soil if necessary e The suction capillary reaches the cerami
10. t remain at vacuum conditions until the next time of operation SUGGESTIONS FOR SAMPLE ANALYSIS HANNA instruments offers a wide variety of instrumentation chemical test kits and reagents ask your dealer for details to analyze soil solution samples Use the HI 83215 or HI 83225 Grow Master bench photometer for testing the presence and strength of ammonia nitrate phosphorus and potassium on the spot low medium and high ranges This advanced instrument is very simple to operate even for non technical users and provides lab results 1 Add the proper reagent see photometer instruction manual to the sample solu tion and shake gently 2 Fill two measuring cuvets one with the solution without reagent blank and the other with the reacted sample Screw the cap onto the cuvets and shake 3 Wipe the cuvets with a soft tissue to remove any dirt or fingerprint 2 Cy E 4 Select the desired program and insert the blank cuvet into the photometer cell Press ZERO 5 Now insert the cuvet with the solution to be analyzed and press READ For pH EC TDS measurements you can use these portable meters housed in a water resistant casing ideal for field applications HI9811 5 Oto 14 pH 6000 uS cm 3000 ppm O to 70 C HI 9813 6 Oto 14 pH 4 00 mS cm 1999 ppm O to 60 C with HANNA ES T system HI 991300 Oto 14 pH 3999 uS cm 2000 ppm O to 60 C with advanced features Chemical Test Kits fo
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