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Summary of Contents for Hanna Instruments HI 993310
- Page 1 Instruction Manual HI 993310 Portable Water Conductivity & Soil Activity Meter w w w . h a n n a i n s t . c o m...
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Page 2: Table Of Contents
If With HI 993310 it is possible to directly measure, in a quick and simple the instrument is to be returned to Hanna Instruments, first obtain a... -
Page 3: Soil Activity
particularly sensitive to soil activity. They require a lower quantity of SOIL ACTIVITY fertilizer because they utilize the reserve of nutrients in the seed. This is true even for resistant species such as sugar beet and alfalfa. SOIL ACTIVITY Later on, plants can grow faster with proper fertilization, particularly Plants absorb nutritive elements dissolved in irrigation water. - Page 4 ORNAMENTAL PLANTS & FLOWERS IDEAL VALUES VEGETABLES IDEAL VALUES Amaranthus 0.4-0.6 & HERBACEOUS CULTIVATIONS Anthurium 0.2-0.4 Asparagus 0.2-0.4 Azalea 0.3-0.5 0.3-0.5 Sugar beet Begonia 0.3-0.6 Carrot 0.2-0.4 Chrysanthemum 0.4-0.7 Cauliflower 0.3-0.5 Croton 0.2-0.4 Cucumber 0.3-0.5 Cyclamen 0.4-0.6 Onion 0.2-0.5 Dahlia 0.4-0.5 Watermelon 0.2-0.4...
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Page 5: Water Conductivity
IRRIGATION WATER WATER CONDUCTIVITY The irrigation water must be checked regularly, especially in the hydro- ponics industry. Conductivity is the most important parameter to check NUTRITIVE SOLUTIONS since plants can be seriously damaged by too high EC value. The nutritive solutions constitute one of the most important factors in Water used for irrigation has been classified in four classes, depending on determining the plant’s growth and yield. - Page 6 Tolerance of some common plants to the soil conductivity (Ayers & How to prepare the saturated soil-paste samples for analysis Westcot, 1976). A) Soil extraction: • EC = maximum of tolerated soil conductivity (salinity). 1) Extract the soil as indicated below: •...
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Page 7: Functional Description
FUNCTIONAL DESCRIPTION SPECIFICATIONS Range Act. 0.00 to 1.00 0.00 to 19.99 mS/cm Resolution Act. 0.01 0.01 mS/cm Accuracy ±2% F.S. (from 0 to 15.00 mS/cm) (@20°C/68°F) excluding probe error Typical EMC ±2 % F.S. Deviation Calibration Conductivity: Manual, single-point through knob Soil Activity: calibrated through the conductivity range calibration Temperature... -
Page 8: Calibration
CALIBRATION OPERATIONAL GUIDE The soil activity range is calibrated by performing the calibration of • Each meter is supplied complete with a 9V battery. Slide off the the conductivity range. battery compartment cover on the back of the meter and install the battery while paying attention to its polarity. -
Page 9: Probe Maintenance
Note: Before taking any soil measurement, it is recommended to rub BATTERY REPLACEMENT the tip of the HI 76305 soil probe with fine sandpaper. The instrument is powered by a 9 V battery and is provided with the • After measurements have been completed, switch the meter off, or Battery Error Prevention System (BEPS), which turns the unit off when it will automatically turn itself off after approximately 2 minutes of a low battery signal is detected. -
Page 10: Accessories
Customer Service Center, or e-mail us at tech@hannainst.com. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner. Hanna Instruments reserves the right to modify the design, construc- tion and appearance of its products without advance notice. - Page 11 SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel.
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