Campbell Met One 034A-L Manual del operador descargar pdf (Pagina 20)

Installation, Operation and Maintainance of Automatic Meteorological Stations

CR10X Storage and Control Module

end, type in the following CR10KD keyboard instructions (for presentation purposes given between double quotes):

“*8” (to activate Manual Data Dump using the star-eight mode)

METSTAT only uses Final Storage Area 1, and star-eight mode therefore automatically continues with the selection

of the output device. The display will show “01”. Type the following command:

“71” (this is the code for the SM4M storage module)

“A” (keyboard equivalent for ENTER)

The display shows a number. This is the Storage Module Pointer (SPTR), which represents the location up to which

data have been downloaded in previous dump sessions. As a default, this is the starting point for the next data trans-

fer exercise. To continue, type:

“A” (keyboard equivalent for ENTER)

The display shows a number; which is the address of the last occupied slot in the Final Storage Location, contain-

ing the most recent measurement value. As above, it concerns a pointer and is called the Data Storage Pointer (DSP).

To continue, type:

“A” (keyboard equivalent for ENTER)

The display shows “04”. To start data transfer, type:

“1” (in fact, any number would do)

“A” (keyboard equivalent to ENTER)

After finalizing the data dump, the keyboard displays the number of the last occupied Final Storage Location.

“Instruction 96”, as well as the above-presented “star-eight” mode, only transfers ‘fresh’ data from the logger to

the storage module, i.e. data that have not been down loaded before. In the majority of cases this is the appropriate

procedure. The trouble shooting section in this paragraph presents the instructions for transferring ‘old’ data to the

SM4M, i.e. data that have already been down loaded in a previous dump session.

2.4 Maintenance

The CR10X requires minimal maintenance. During the periodic inspection visits, the user should check that:

• allsensorcablesareconnectedtothewiringpanelaccordingtothewiringschedulepresentedinAnnex2

and Table 1;

• thewiringpanelisfreeofcorrosionorotheraliensubstances;

• thegroundingcablebetweenENC12/14centralgroundingpointandwiringpanelisfirmlyconnected;

• theCR10XisfirmlyattachedtothebackplateintheprotectiveenclosureENC12/14.

The CR10X contains an internal lithium coil cell battery that operates the internal clock and SRAM when the data-

logger is not connected to an external power source. This lithium battery should last for at least 4 years when no

external power is available. However, in the default situation the datalogger is connected to the PS12LA power sup-

ply, and the expected lifetime of the lithium battery is therefore around 10 years. Consequently, battery replacement

will not be needed in the mid term future.

The voltage of this internal Lithium battery can be measured using “star-B” mode, operation 8. The user is

referred to the Campbell Scientific CR10X Operator’s Manual for the exact instructions. If the voltage drops below 2.4

V the battery needs to be replaced. In this unlikely event, the user is advised to contact Campbell Scientific. Relevant

addresses are presented in Annex 9.

2.5 Signature

METSTAT contains an instruction to calculate a program signature on a daily basis. This signature is a function of

the exact text of the METSTAT program in the logger’s memory. The signature therefore changes if the program is

modified of corrupted. Thus, a daily calculation of the program signature represents a good test for checking the

state of the datalogger program.

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Campbell Met One 034A-L Manual del operador Pagina 20

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