Campbell CS225, Инструкция по эксплуатации

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CS225 Temperature String
5
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,
without having to review the entire data set. The lifetime minimum and
maximum temperatures are used for maintenance and warranty records.
7.1. Wiring
Connections for the SGB3 and CS225 to Campbell Scientific dataloggers are
given in Table 7-1 and 7-2. When Short Cut for Windows software is used to
create the datalogger program, the sensor should be wired to the channels
shown on the wiring diagram created by Short Cut.
The SGB3 is required in order to protect against electrical surges. The SGB3
makes use of the included FIN4COND cable to make final connections to the
datalogger.