ADVANTAGES OF ELECTROCHEMICAL SENSOR OVER DRY CELL SENSOR
| ELECTROCHEMICAL SENSOR | DRY CELL SENSOR |
| When high concentration gas is sensed the sensor gets saturate for few seconds but returns back to normal.
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Whereas Dry cell sensor when gets exposed to high concentration of gas it saturates. |
| Range for these sensors can measure any amount of gas i.e. even in percentage since during leakage generally it is on higher side
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If the sensor is rated for a particular PPM i.e. 20 PPM and the leakage is in percentage the sensor may get damage or saturates. |
| NO cross Sensitivity to any other gases.
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There is high cross sensitivity for these type of sensor
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| Life span for these sensor is generally 8-10 years subject to minimum rechargeable electrolyte
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Life span for these sensors is less than 2 years |
| This type of sensors can be reactivated by adding electrolyte even if it stays dry for couple of months
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This type of sensors are sealed permanently which cannot be activated from outside. They need to be replaced by new ones. |
| This type of sensors can be connected in long distance without any drop of output as it is in current.
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This type of sensors cannot be connected for long distances as output drops as distance increases. |
| Calibration for Electrochemical sensors can be done on field by adding Electrolyte to them during Calibration procedure
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Calibration for Dry type sensors cannot be done on field by adding Electrolyte to them during Calibration procedure. |
| Cost for these sensors are economical
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Cost for this type of sensor is expensive |
