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.
Important: Do not touch the sensor tip with your
fingers. The oils on the skin will affect to probe’s
measurement accuracy.
Changing Batteries:
1.
Open battery compartment lid (located near the LCD screen).
2.
Remove and replace the old batteries. Note polarity shown in battery compartment.
When inserting new batteries, take care to place them over the white removal tab. This
will make future battery removal much easier.
3.
Recalibrate meter after every battery change.
Specifications
Readout
LCD digital display
EC Range
0.00 - 19.99 mS/cm
Temperature Range
-5 - 55 C
Accuracy
EC: +/-2% Full Scale
Temperature
+/0.5 C
EC Resolution
0.01 mS/cm
Operating Environment
0 to 50C
Calibration
1-point with 2.76 mS/cm standard
Temperature Compensation
Automatic form 0 to 50C
Power
Four LR44 1.5V alkaline batteries
Appendix 1
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. (USDA Tech Bulletin
962)
