Campbell CS225 Manuale delle Istruzioni Scaricare il pdf (Pagina 9)

CS225 Temperature String

6. Installation

6.1 Siting

The CS225 is meant to be installed in the required orientation within the

medium that is to be monitored. In order to make the most representative

measurement it is important that consistent contact be made between the

Temperature String and the medium. The location of the Temperature String

should be representative of the intended application.

The CS225 consists of two distinct segments, the lead and the sensor array.

The lead length accounts for the length of cable required to reach between the

datalogger and the sensor array. The sensor array length accounts for the

length of cable required to incorporate all temperature sensors in their

necessary configuration.

The installation position of the string and its measurement points are

referenced from the first sensor position at the end of the sensor array. This

information needs be addressed as part of the sensor configuration process.

Please contact one of our Measurement Consultants for more details.

6.2 Mounting

The CS225 will need to be orientated and secured in the measurement medium.

Any materials removed in order to install the CS225 should be retained for use

as backfill.

If a burial depth is required for each temperature sensor you will need to know

the length of the sensor array, the “measurement from end” metadata of each

sensor in the array, and any offset used during installation of the string. With

this information you will be able to calculate the depth of each temperature

sensor.

Care should be taken to orientate the lead cable of the CS225 towards the

datalogger to avoid loops or strain on the cable. A suitable trench or conduit

will also need to be considered in order to protect the lead cable from damage.

The SGB3 is to be mounted inside the datalogger enclosure, and can be secured

to the enclosure backplate with the supplied hardware.

7. Operation

When power is supplied to the CS225, the internal electronics will

continuously measure the temperature approximately once per second. Every

output obtained from the sensor is a running average of 10 consecutive, 1

second readings. The accuracy specification is based on an average of 10

consecutive readings. For this purpose after initial power up, a delay of 10

seconds is recommended to obtain the best accuracy.

Outputs of both lifetime and user resettable minimum and maximum

temperatures are also available during powered operation from each

temperature point in the CS225. The user resettable minimum and maximum

temperatures can be used to monitor specific seasons or periods of measure,

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Campbell CS225 Manuale delle Istruzioni Pagina 9