Adcon A720 Guia do Utilizador descarregar pdf (Página 47)

CHAPTER 2

Installation

• Cabling: the pin on the connector of the Adcon

RTUs that the sensor cable is connected to (refer to

the addIT and addWAVE user manuals for a

description of the connectors).

WARNING If you plan to add your own sensors to an Adcon RTU,

note that the cable between the sensor and the RTU must be

shielded, with the shielding properly connected to the casing

ground of the RTU. In addition, the maximum cable length should

not exceed 10 m (33 ft.).

c. Specific entries for SDI-12 sensors (see Figure 19) are:

• Address: type the sensor’s SDI-12 address. Note

that this is the default address; you can still change

the sensor’s address when you connect it to an RTU

(see also “SDI-12 Sensors” on page 43). The default

address is usually 0, but you can get more details

from the sensor manufacturer.

• Method: this parameter is sensor-dependent and

you will need to determine it by consulting the

sensor manual. Typically it is 0 (corresponding to the

SDI-12 M0 request); in case of doubt, consult the

sensor manufacturer.

Figure 19. Defining a custom SDI-12 sensor

• Index: this parameter is sensor dependent and you

will need to determine it by consulting the sensor

manual. It represents the position of a sensor value

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 145 146

Sem comentários

Adcon A720 Guia do Utilizador Página 47