Optex DOS-20 - 14 Maintenance; Maintenance (Monthly); Periodic Inspection (Every 3 Months); Replacement of Consumables

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Perform the following operations every month.
・
Clean the measurement block using tap water.
・
Inspect the measurement block for damage and/or degeneration.
・
Inspect the sensor cable for damage and/or degeneration.
・
Inspect the installation bracket for corrosion.
・
Immerse the sensor in measurement water of the known concentration
and check that the correct value is displayed on the transmitter.
Perform the following inspections every 3 months.
・
Terminal block screws of the transmitter are not rusted.
・
Replace the sensor cap every year.
・
Purchase the replacement sensor cap (DOS-CP) for replacement.
Maintenance (monthly)
Periodic inspection (every 3 months)
Replacement of consumables
14
Maintenance
Calibration
The sensor is designed to be able to measure stably for a prolonged period
of time. In order to maintain the reliability of measurement, however,
calibration should be carried out at least once a year (Refer to “9 Calibration”).
If the sensor is not used over a prolonged period, perform the following
operations.
1. Detach the sensor cable from the transmitter.
2. Drain off the water from the sensor and clean it.
3. Store the unit away from direct sunlight.
Long-term storage
Caution
・
To clean the sensor, lightly wipe with a clean, soft cloth and
water diluted with a mild detergent, and then wipe with a dry,
soft cloth.
・
Do not wipe the sensor with organic solvent such as benzine.