Spectrum Fieldscout 2265FS Product Manual
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Spectrum Fieldscout 2265FS Product Manual

Direct soil ec meter
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Direct Soil
EC Meter
PRODUCT MANUAL
Item #'s
2265FS, 2265FSTP

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Summary of Contents for Spectrum Fieldscout 2265FS

  • Page 1 ® Direct Soil EC Meter PRODUCT MANUAL Item #’s 2265FS, 2265FSTP...

  • Page 2: Table Of Contents

    Field Scout Soil & Water EC Meter. Please read this manual thoroughly before using your meter. For customer support or to place an order call Spectrum Technologies, Inc. 800-248-8873 or (815) 436-4440 between 7:30 am and 5:30 PM CST FAX at 815-436-4460 info@specmeters.com.

  • Page 3: Introduction

    Introduction Congratulations on the purchase of your FieldScout Direct Soil EC Meter. This instrument has been spe- cifically designed for direct measurement of salts in soil media as well as water or nutrient solutions. This manual describes how to use your meter and keep it working accurately for many years.

  • Page 4: Ec Probe

    EC Probe Electrical conductivity (EC) important parameter in evaluating irrigation water and fertilizer solutions. Crops can be damaged if irrigated with water with a high conductivity. The quality of irrigation water has been classified into 5 separate categories (See Appendix 3, p. 22). EC is also an indicator of the strength of fertilizer solutions.
  • Page 5 Because EC readings are affected by moisture content, it is important that soil moisture content does not differ significantly between readings. An easy way to achieve this condition is by taking measurements approximately 30 to 60 minutes after an irrigation. This should ensure the soil moisture level has approximately reached field capacity.

  • Page 6: Probe Calibration

    Probe Calibration The meter and probe are factory calibrated. However, to ensure accuracy, the meter should be calibrated at least once a month. The meter is shipped with 2.76 mS/cm calibration solution. If you are interested in calibrating to a concentration less than 2 mS/cm, you will need to change the range mode of the meter to AUTO (see Range Selection, p.
  • Page 7 If necessary, clean the probe with alcohol to remove any residual oils. Rinse the electrode tip in de-ionized (or distilled) water and then rinse it in the calibration standard. Switch unit on with the ON/OFF key. Place probe tip into a container of calibration standard. Take care that the 4 exposed electrodes on the tip are not touching the side or bottom of the container holding the buffer solution.

  • Page 8: Meter Configuration

    Meter Configuration The digital reader for the Field Scout EC meter is shipped in Manual, 1-Point calibration, HI range mode. In this mode, the EC units will always be displayed as mS/cm. If you are working with less concentrated solutions and want to calibrate or read at a lower concentration, the range mode should be changed to one of the other modes.
  • Page 9 Range selection 1. Switch off the display. 2. Press and hold the F button then press and release the ON/OFF button to switch on the display. Release the F button. The meter will go into Range selection mode and the lower display will show the current choice.

  • Page 10: Direct Soil Ec Readings

    Direct Soil EC Readings Greenhouse Soils The stainless steel probe of the Field Scout Soil & Water EC Meter can be inserted directly into the soil. By taking measurements at different soil depths, you can determine where the fertilizer is concentrated in the soil.

  • Page 11: Sme Measurement

    SME Measurement Saturated Media Extract (SME) Measurements Growth media used in most greenhouse operations is high in organic material and processed materials and low in mineral soil. These materials are easier to handle, are well aerated and have good moisture- holding properties, but have limited ability to retain nutrients.

  • Page 12: Liquid Measurement/Other Features

    Liquid measurement/ Other Features Water (Liquid) Measurements The Field Scout Soil & Water EC Meter can also measure the EC of liquids. Simply dip the electrode tip into the solution and wait for the reading to stabilize (a stable reading occurs when the readout has not changed for 3 seconds).

  • Page 13: Maintenance/Battery Replacement

    Maintenance/ Battery Replacement Maintenance: To improve performance and avoid transferring soil- borne diseases, clean the sensor tip by rinsing in alcohol for 5 - 10 minutes. Replace all batteries if low battery indicator appears, or if readings are faint or unstable. Store the probe sensor dry.

  • Page 14: Probe/Tip Replacement

    Probe/Tip Replacement If the probe cannot be calibrated, or if it does not hold the calibration for a reasonable amount of time, the probe or tip must be replaced. Current versions of the 24” T-handle probe come with a replaceable tip (item 2266).
  • Page 15 Meter Housing Black nut Tan nut Strain relief Larger plastic assembly/O-ring socket Probe plug II. Attaching a direct-insert probe 1. If you are connecting an 8” probe, slide the tan nut over the probe and down the black cable. Skip to step 4. 2.

  • Page 16: Checking Probe Connection

    Checking Probe Connection If the meter is giving an out-of-range (OR) error message, it may be that the probe has come unplugged from the meter. The procedure for checking this is outlined below. 1. Remove the black nut from the strain-relief where the cable feeds into the meter.

  • Page 17: Specifications

    Specifications Readout LCD digital display EC Range 0.00 - 19.99 mS/cm Temperature 0 - 55 C (32 - 122 Range Accuracy EC: ±1% Full Scale Temperature: ±0.5 EC Resolution 0.01 mS/cm Calibration 1-point, manual calibration Temperature Automatic from 0 to 50 Compensation Power Four LR44 1.5V alkaline...

  • Page 18: Preferred Ec Values For Selected Plants

    Appendix 1 Preferred EC Values for Selected Plants Plant EC (mS/cm) Asparagus 1.5 - 2.0 Watermelon 1.5 - 2.5 Carrot 1.5 - 2.0 Cabbage 2.0 - 3.0 Cucumber 2.0 - 3.0 Crysanthemum 1.5 - 2.5 Onion 1.5 - 2.0 Bean 2.0 - 2.5 Strawberry 2.0 - 2.5...
  • Page 19 Recommended EC Value (mS/cm) 1 to 2 Pour thru Poinsettia during 2.0 - 3.0 0.85 - 1.25 2.8 - 4.1 weeks 2-12. Pansies during 0.25 - 1.5 0.1 - 0.6 0.35 - 2.1 active growth. Geraniumus during 1.6 - 2.4 0.65 - 1.0 2.2 - 3.3 active growth.

  • Page 20: Interpreting Ec Readings From Turf Grass

    Appendix 2 Interpreting EC Readings From Turf Grass When taking direct-insert EC readings in turf grass with the Field Scout meter, it is often helpful to con- vert the measurement to the equivalent Saturated Media Extract (SME) value. This conversion will vary for different soils.
  • Page 21 Moderately Moderately Sensitive Sensitive Tolerant Tolerant < 3 mS/cm 3 - 6 mS/cm 6 - 10 mS/cm >10 mS/cm Annual Annual Bent cv. Bluegrass Ryegrass Seaside Alkaligrass Colonial Chewings Perennial Bluegrass Fescue Ryegrass Bermudagrass Kentucky Creeping Seashore Bluegrass Bentgrass Tall Fescue Paspalum Rough St.

  • Page 22: Classification Of Irrigation Water

    Appendix 3 Classification of Irrigation Water Excellent EC < 0.25 mS/cm Good 0.25 mS/cm < EC < 0.75 mS/cm Permissible 0.75 mS/cm < EC < 2.0 mS/cm Doubtful 2.0 mS/cm < EC < 3.0 mS/cm Unsuitable EC > 3.0 mS/cm Categories of irrigation water quality based on electrical conductivity.

  • Page 23: Greenhouse Media

    Appendix 4 Greenhouse Media Classification of Greenhouse Media Electrical Conductivity (mS/cm) Comments 1 to 2 1 to 5 Very low levels. Indicates 0 - .74 0 - .25 0 - .12 very low nutrient status. Suitable range for seedlings .75 - 1.99 .25 - .75 .12 - .35 and salt sensitive plants.
  • Page 24 Interpreting EC Readings from Soilless Media The FieldScout EC meter allows for quick and easy readings of salinity in a greenhouse container. The following equations give an approximation of how a direct-insert reading relates to more conventional soil sampling techniques. The FieldScout reading is designated by the variable FS.

  • Page 25: Diagnostic Messages

    Appendix 5 Diagnostic Messages Low Battery Indicator - Battery 100% full - Battery 50% full - Battery 25% full - Replace battery soon OR/UR (steady) - Measured EC or temperature value exceeds specified maximum or minimum value. • Sensor electrodes have short circuited. •...

  • Page 26: Celsius To Fahrenheit Conversion Chart

    Appendix 6 Celsius to Fahrenheit Conversion Chart The Field Scout Soil & Water EC Meter gives temperature readings in Celsius. The conversion from Celsius to Fahrenheit is calculated with the following equation: F = 9/5 * C + 32 This information is also contained in the following table: 32.0 59.0...

  • Page 27: Warranty

    This product is warranted to be free from defects in material or workmanship for one year from the date of purchase. During the warranty period Spectrum will, at its option, either repair or replace products that prove to be defective. This warranty does...

  • Page 28: Thayer Court Aurora, Il

    This equipment has been manufactured for Spectrum Technologies, Inc. 3600 Thayer Court Aurora, IL 60504 USA The Manufacturer’s DECLARATION OF CONFORMITY is on file at the above address, and certifies conformity to the following: Model Number: 2265FS/2265FSTP Description: Electrical Conductivity Meter...

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Fieldscout 2265fstp

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