Vaisala MAWS101, Руководство пользователя

Страница: 165 / 196

Chapter 7 _____________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 163
Table 35 Description of Analog Measurement Channels
Channels Pin name Description
E 12 V / 25 mA voltage excitation ON/OFF,
voltage can be measured. OR:
100
µ
A/1mA current excitation.
H Analog input (High)
L Analog input (Low)
CH0, CH1, CH2,
CH3
16-bit ADC
C The pin has been connected to ground
(GND) via a 10 ohm resistor so the
current can be measured.
E
100
µ
A/1mA current excitation
H Analog input (High)
L Analog input (Low)
CH4, CH5, CH6,
CH7
16-bit ADC
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.
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)
CHA, CHB
Suitable for fast-
changing input
signals
12-bit ADC
C Common return (Analog ground)
NOTE Each sensor of the basic configuration has its own dedicated channel.
The table above is for reference purposes only.
Table 36 Description of the Power Channel
Pin name Description
GND Ground
+BATT 5 ... 10 V
GND Ground
+ExtDC 8 ... 16 V
Wiring Diagrams
For the basic set of sensors, the wiring has been done at the factory
according to Figure 121 on page 164. Do not change the wiring
between the connectors and logger pins. For special deliveries, a
separate wiring diagram is supplied in order to help you connect the
sensor wires to correct connectors. The numbers next to the plug
connectors indicate poles for connection wires.