Prepare For Storage Or Travel - HYDROLAB HL Serie Manual De Usuario

Figure 15 O-ring locations—HL7 sonde
1 Storage/Calibration cup O-rings (2x)

Prepare for storage or travel

Keep the instrument in a location where the water in the storage/calibration cup will not freeze or sensor damage
will occur.
Do not keep the sensors in deionized water or cleaning solutions or sensor damage will occur.
Do not keep a turbidity sensor or fluorometer in colored pH buffer or sensor damage will occur.
Do not keep the sensors in field sample water for long periods because biological growth can occur and
contaminate the sensors.
1. Rinse the instrument and sensors with clean tap water.
2. Remove the sensor guard and install the storage/calibration cup. Pour a minimum of 2.5 cm
(1 in.) of pH 4 buffer with no color or clean tap water into the storage/calibration cup. Refer to
Figure 16.
Note: Figure 16 shows the HL4 sonde. The steps are the same for the HL7 sonde.
Note: It is not necessary for the sensors to be in the pH buffer or water.
Note: Do not keep a total dissolved gas sensor wet or the sensor membrane will be damaged.
3. Make sure that the end bumper is installed on the storage/calibration cup.
4. Install the mooring cap on the connector to keep the connector clean and dry.
22 English
2 Battery compartment O-rings (2x)
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