Campbell-scientific CR800 and CR850 Measurement and Control Systems Manual de usuario descargar pdf (Pagina 37)

100

101

Section 4. Quickstart Tutorial

37

Figure 4: Analog sensor wired to differential channel #1

Table 1. Single-Ended and Differential Input

Channels

Differential Channel Single-Ended Channel

1H 1

1L 2

2H 3

2L 4

3H 5

3L 6



4.1.3.2 Bridge Sensors

Many sensors use a resistive bridge to measure phenomena. Pressure sensors and

position sensors commonly use a resistive bridge. Examples:

• A specific resistance in a pressure transducer strain gage correlates to a

specific water pressure.

• A change in resistance in a wind vane potentiometer correlates to a change in

wind direction.

4.1.3.2.1 Voltage Excitation

Bridge resistance is determined by measuring the difference between a known

voltage applied to a bridge and the measured return voltage. The CR800 supplies

a precise scalable voltage excitation via excitation terminals. Return voltage is

measured on analog terminals. Examples of bridge sensor wiring using voltage

excitation are illustrated in figures Half-Bridge Wiring -- Wind Vane

Potentiometer

(p. 38) and Full-Bridge Wiring -- Pressure Transducer (p. 38).

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 565 566

Comentarios a estos manuales

Sin comentarios

Campbell-scientific CR800 and CR850 Measurement and Control Systems Manual de usuario Pagina 37

Comentarios a estos manuales

Relacionado con productos y manuales para Instrumentos de medición Campbell-scientific CR800 and CR850 Measurement and Control Systems