Vaisala WMS302 Guia do Utilizador descarregar pdf (Página 210)

User's Guide ______________________________________________________________________

208 __________________________________________________________________M210630EN-B

Table 36 Description of Analog Measurement Channels

Channels Pin name Description

CH0, CH1, CH2,

CH3 16-bit ADC

E 12 V / 25 mA voltage excitation ON/OFF,

voltage can be measured. OR: 100mA/

1mA current excitation.

H Analog input (High)

L Analog input (Low)

C The pin has been connected to ground

(GND) via a 10 Ω resistor so that the

current can be measured.

CH4, CH5, CH6,

CH7 16-bit ADC

E 100 mA / 1 mA current excitation

H Analog input (High)

L Analog input (Low)

C Common return and reference level for

voltage measurements via the channel's

own E-, H- and L-pins. The pin has been

connected directly to ground.

CHA, CHB Suitable

for fast-changing

input signals 12-bit

ADC

F Frequency input

E 0 ... 12 V / 20 mA adjustable excitation

voltage, can be measured.

H Fast analog input (High)

L Fast analog input (Low)

C Common return (Analog ground)

Table 37 Description of the Power Channel

Pin name Description

GND Ground

+BATT 5 ... 14 V

GND Ground

+ExtDC 8 ... 16 V

1 2 ... 205 206 207 208 209 210 211 212 213 214 215 ... 261 262

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Vaisala WMS302 Guia do Utilizador Página 210