Campbell-scientific 3WHB10K 3-Wire Half-Bridge Terminal Input Module Manual do Utilizador descarregar pdf (Página 3)

3WHB10K Table of Contents

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1. Function........................................................................1

2. Specifications ..............................................................1

3. Wiring............................................................................2

4. Programming Examples..............................................2

4.1 CR10(X) ...................................................................................................3

4.2 21X ...........................................................................................................4

4.3 CR7...........................................................................................................4

4.4 CR9000X..................................................................................................5

4.5 CR1000.....................................................................................................5

5. 100 Ohm PRT in 3 Wire Half Bridge ...........................5

5.1 Excitation Voltage ....................................................................................6

5.2 Calibrating a PRT .....................................................................................6

5.3 Compensation for Wire Resistance...........................................................7

Figures

1-1. Terminal Input Module ...........................................................................1

2-1. Schematic ................................................................................................1

3-1. 3-Wire Half Bridge Used to Measure PRT .............................................2

Tables

3-1. 3WHB10K Connections to Campbell Scientific Dataloggers.................2

4-1. Excitation Voltage for 100 Ohm PRT in 3WHB10K Based on

Maximum Temperature and Input Voltage Range...............................3

1 2 3 4 5 6 7 8 ... 13 14

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Campbell-scientific 3WHB10K 3-Wire Half-Bridge Terminal Input Module Manual do Utilizador Página 3