Vaisala PTU300 Guia do Utilizador descarregar pdf (Página 79)

Chapter 4 ________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 77

NOTE

This command changes both the serial output and display units to

either metric or non-metric units. When you want to output both

metric and non-metric units simultaneously on the display, select the

display units later by using the display/keypad.

NMEA Data Format

The PTU300 transmitter can be used in connection with a GPS

receiver. It responds to a GPS input command by outputting a single

predefined NMEA format message or the transmitter serial number.

NOTE

The pressure unit has to be set as bar when the NMEA data output

format is used.

The maximum length of FORM is 128 characters.

NOTE

Check that the serial bus settings of the transmitter and those of the

GPS receiver are the same. A baud rate less than 9600 is

recommended.

Example:

"$PASHS,XDR,P,"1.5_P_",B,"_SN_",C,"_3.2_T_",C,"_SN_",H,"_RH_",P,"

_SN_#r #n

where,

"$PASHS,XDR,P," text field $PASHS,XDR,P, (P transducer type

= pressure)

1.5 number field

P pressure

",B," text field (B transmitter unit = Bar)

SN transmitter ID (serial number)

",C," text field (C transducer type = temperature)

3.2 number field

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 172 173

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Vaisala PTU300 Guia do Utilizador Página 79