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Cardy Nitrate

NO

3

–

Meter

PRODUCT MANUAL

Item 2305G

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Summary of Contents for 2305G

Page 1: ...Cardy Nitrate NO3 Meter PRODUCT MANUAL Item 2305G...

Page 2: ...23 Preparing Soil less Media 24 Specifications 26 Soil Test Kit Accessories 27 Sufficiency Levels 28 Warranty 34 This manual will familiarize you with the features and operation of your Cardy Nitrate...

Page 3: ...f all types In addition applying just the right amount of nitrogen at the right time can help safeguard the environment by re ducing the amount of residual soil nitrate NO3 available to leach into gro...

Page 4: ...trode A and response membrane electrode B Both electrodes must be covered by sam ple to enable accurate measurement 2 Light shield cover Cover used to shield sensor from light Because the sensor is af...

Page 5: ...during calibration and lights steadily when meter locks onto a measurement 9 CAL icon Flashes during measurement and lights steadily when calibration is fin ished 10 Battery alarm icon Lights when ba...

Page 6: ...the meter on Handling Precautions Neither the meter nor sensor is waterproof by itself The sensor must be securely mounted on the meter before use The sensor is made of PVC and may get scratched if n...

Page 7: ...ed or when performance deteriorates due to age Measurement of organic solvents oils adhesives ce ment alcohols or concentrated acids pH less than 2 will shorten the sensor s life Some sample types suc...

Page 8: ...s are generally expressed as NO3 N nitrate nitrogen To convert NO3 N nitrate nitrogen to NO3 nitrate multiply or divide NO3 N x 4 42 NO3 NO3 N 226 NO3 Therefore 2000 ppm NO3 nitrate 450 ppm NO3 N nitr...

Page 9: ...held too long the LCD will display the word Unit In this case press and hold the MEAS button to get back into meas urement mode and repeat this step 2 Press and hold the CAL button until the CAL icon...

Page 10: ...AL button un til the CAL icon flashes a minimum of 2 seconds 4 When the calibration has been finalized the CAL icon will stop flashing The reference solution concentration will be displayed along with...

Page 11: ...step 2 with the 450 ppm NO3 N reference solu tion 5 When the second calibration has been finalized the CAL icon will stop flashing and the reference solution concentration will be displayed The meter...

Page 12: ...play the current ni trate concentration To lock in a read ing press the MEAS button The MEAS icon will flash to indicate that measurement has begun 4 When the measurement is com plete the MEAS icon wi...

Page 13: ...Scoop Measurement 1 Open the light shield cover s sliding cap Submerge the sensor in the sample and shake it gently 2 or 3 times Scoop up some of the sample onto the meter Place the meter on a flat s...

Page 14: ...e starting with the screen for mode 1 If the MEAS button is not released immediately after seeing the full display the me ter will enter the Set measurement units mode and display the word Unit In thi...

Page 15: ...mg L NO3 Press and hold the MEAS button to return to measure ment mode Mode 2 Temperature measurement From mode selection screen 2 press the MEAS button for half a second This is not a mode configura...

Page 16: ...and hold the MEAS button to return to measure ment mode Mode 4 Set slope coefficient From mode selection screen 4 press the MEAS button for half a second From here you can set a multiplicative consta...

Page 17: ...ilute or concentrated solutions The default setting is 0 Press and hold the MEAS button to return to measure ment mode Mode 6 Sensor voltage measurement From mode selection screen 6 press the MEAS but...

Page 18: ...twist the waterproof gasket Precautions As shown here make sure that the sensor tab is inserted over the copper strip on the main unit Be careful not to dam age the connector When removing the sensor...

Page 19: ...Slide both batteries into the bat tery clips as shown such that the positive sides are facing up ward Replacement Use a small flat head screwdriver or other instrument to pry the bat teries from the c...

Page 20: ...ages thick and placing overnight in a warm spot with good air movement Soil will dry in a few hours if placed in a sunny location exposed to the wind If dried indoors 24 to 48 hours may be required In...

Page 21: ...The filtration will take place from the outside of the filter to the inside 5 As soon as sufficient filtrate accumulates in the filter use the small pipette to transfer the soil extract onto the senso...

Page 22: ...the content of water in the soil should be taken into account The wetter the soil the greater the tendency for a low re sult Precise work requires that the measured nitrate con tent be multiplied by...

Page 23: ...tured leaves should be used These are the leaves that have stopped expanding in size The petiole or leaf stem of the leaf or appropriated plant material should be used for the test 3 A minimum of 25 p...

Page 24: ...is compressed as it was in the pot Be consistent when measuring DO NOT lightly fill or heavily pack the beaker Place the sample into a cup or beaker Add 2 equal volumes of distilled water into the cup...

Page 25: ...le 2 gives a general idea of the nitrate levels to look for in the ex tracted solution Table 2 Interpretation of Greenhouse Soils Desirable NO3 N concentrations in saturated media extract Media Type p...

Page 26: ...alue Measurement Range 14 to 1400 ppm NO3 N Operating Temperature 5 to 40 C Calibration 1 pt 450 ppm NO3 N or 2 pt 34 and 450 ppm NO3 N Weight 52g approx 1 8 oz Power 2 CR 2032 batteries Auto Power OF...

Page 27: ...t Kit Std Solution 450ppm NO3 N 30ml 1 Extractant 34ppm NO3 N 1 Liter 2 Cups 8oz 3 Measuring Spoon 29 5 cc 1 Pipet 1 Filter Papers 30 Calibration solutions in soil test kits include AlSO4 Handheld Pla...

Page 28: ...000 10 000 600 800 Preharvest 6000 10 000 400 600 Lettuce Early head formation 7000 10 000 400 600 Preharvest 6000 8000 300 500 Onion Bulbs 0 5 1 5 in 350 500 Pepper Vegetative growth 7000 10 000 900...

Page 29: ...es long 800 1000 First harvest 700 800 Tomato First buds 1000 1200 field First open flowers 600 800 Fruit 1 inch diameter 400 600 Fruit 2 inch diameter 400 600 First harvest 300 400 Second harvest 200...

Page 30: ...December 600 800 October January 600 800 planting February 300 500 March 200 500 April 200 500 Watermelon Vines 6 inches long 1200 1500 Fruit 2 inches long 1000 1200 Fruits half mature 800 1000 First...

Page 31: ...1800 50 1400 1800 1000 1300 1200 1500 60 1110 1500 700 900 500 1000 70 700 900 500 700 400 600 Optimum range of nitrate nitrogen concentrations dry weight and sap basis in potato petiole at various s...

Page 32: ...te ppm 0 5 800 3 520 5 6 725 3 190 6 7 650 2 860 7 8 575 2 530 8 9 500 2 200 9 10 425 1 870 10 11 350 1 540 11 275 1 210 Celery Adequate petiole sap nitrate concentration Carrot shoulder diameter in N...

Page 33: ...oil Potential Very High High Medium Low PSNT result ppm N N application Rate lbs Acre 10 160 120 11 12 150 80 13 14 125 80 15 17 100 40 18 20 60 40 21 0 0 consult WMEX pub A2809 Pennsylvania Nitrogen...

Page 34: ...his warranty does not cover damage due to improper installation or use lightning negligence accident or unauthorized modifications or to inci dental or consequential damages beyond the Spectrum prod u...

Page 35: ...35...

Page 36: ...d certifies conformity to the following Model Number 2305G Description Nitrate Meter Type Electrical Equipment for Measurement Control and Laboratory Use Directive 2004 108 EC Standards EN 61326 1 200...

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