Maintenance; Cleaning The Measuring Instrument; Cleaning The Sensor; Accessories - Endress+Hauser CLM280 Betriebsanleitung

CLM280
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Maintenance

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Caution!
Prior to commencing maintenance work:
Disconnect the sensor connector from the instrument.

13.1 Cleaning the measuring instrument

Clean the front of the housing with usual commercial cleaning agents.
The front is resistant to the following in accordance with DIN 42 115:
• Alcohol (short-term)
• Diluted acids (max. 2% HCl)
• Diluted alkalis (max. 3% NaOH)
• Soap-based household cleaner
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Caution!
Never use the following for cleaning purposes:
• Concentrated mineral acids or alkalis
• Benzyl alcohol
• Methylene chloride
• High-pressure steam

13.2 Cleaning the sensor

To ensure reliable measurement, the sensor must be cleaned regularly:
• Use a suitable cleaning solution (e.g isopropyl alcohol) to remove light fouling and deposits on
the parts of the sensor in contact with medium.
• After cleaning, rinse the sensor with distilled water or ultrapure water. Cleaning agent resi-
dues can distort the measurement.
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Accessories

CLS381 conductive conductivity sensor
• Four-electrode sensor with integrated temperature sensor NTC 30
• 1.5 m (4.9 ft) fixed cable and waterproof DIN connector
• Cell constant k = 0.475 cm
• Order No. 50081032
Precision solutions referenced to SRM (standard reference material) from NIST, reference tem-
perature 25 °C (77 °F), with temperature table
• CLY11-A, 74.0 μS/cm, 500 ml (16.9 fl.oz.); Order No. 50081902
• CLY11-B, 149.6 μS/cm, 500 ml (16.9 fl.oz.; Order No. 50081903)
• CLY11-C, 1.406 mS/cm, 500 ml (16.9 fl.oz.); Order No. 50081904
• CLY11-D, 12.64 mS/cm, 500 ml (16.9 fl.oz.); Order No. 50081905
• CLY11-E, 107.0 mS/cm, 500 ml (16.9 fl.oz.); Order No. 50081906
Endress+Hauser
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Maintenance
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