Vaisala DMP248 Manual de servicio descargar pdf (Pagina 31)

CHAPTER 4_____________________________________________________________ COMMISSIONING

VAISALA _________________________________________________________________________ 25

CHAPTER 4 COMMISSIONING

When the DMP248 transmitter leaves the factory, its measurement

ranges and output signals have already been selected. The user can

subsequently change the measurement units between metric and non-

metric and select and scale the output signals with software functions,

see Chapter Selecting and scaling the analogue output quantities and

Appendix 1.

Security lock jumper

Before the settings can be changed, the user must first remove the

security lock jumper in connector X15 (see FIGURE 4-1). The security

lock jumper makes it impossible to change the transmitter settings by

mistake. The jumper should be removed only for changing the settings

and for calibration; the auto-calibration is active only with the jumper

connected. When the security lock jumper is connected, some

commands cannot be used (see Chapter Commands and security lock

jumpers).

OPENED COVER OF THE DMP248

X15

CHANGE OF SETTINGS

DISABLED

FIGURE 4-1 Location of the security lock jumper.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 144 145

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Vaisala DMP248 Manual de servicio Pagina 31