Campbell-scientific CR9000X Measurement and Control System Instrukcja Użytkownika Strona 225

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7-1
Section 7. Measurement Instructions
7.1 Voltage Measurements
VoltDiff – Differential Voltage Measurement............................................. 7-3
VoltSE – Single-ended Voltage Measurement ............................................ 7-4
7.2 Thermocouple Measurements
Measure the output of thermocouples and convert to temperature.
TCDiff – Differential Voltage Measurement of Thermocouple .................. 7-5
TCSE – Single-ended Voltage Measurement of Thermocouple.................. 7-7
7.3 Resistance Bridge Measurements
7.3.1 Electric Bridge Circuits ..................................................................... 7-9
7.3.2 Bridge Excitation............................................................................... 7-9
7.3.3 Half Bridges..................................................................................... 7-10
7.3.4 Full Bridges ..................................................................................... 7-13
7.4 Self Measurements
Battery – Measures Battery Voltage or Current ........................................ 7-15
ModuleTemp – Measures the Temperature of the 9050 Analog Input
Module (used as a reference for thermocouple measurements)................. 7-15
Calibrate – Adjusts the Calibration for Analog Measurements ................. 7-15
BiasComp – Adjusts Analog Input Bias Current Compensation............... 7-15
InstructionTimes - measures time of program instructions ....................... 7-15
7.5 Peripheral Devices
AM25T ...................................................................................................... 7-16
CS7500 (LI7500)....................................................................................... 7-18
CSAT3....................................................................................................... 7-19
SDMAO4................................................................................................... 7-19
SDMCAN .................................................................................................. 7-19
SDMCD16AC ........................................................................................... 7-26
SDMCVO4 ................................................................................................ 7-26
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