Contents
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1. Introduction ................................................................ 1
2. Specifications ............................................................ 1
3. Measurement Concepts ............................................ 2
3.1 Differential Measurement .................................................................... 3
3.2 Completing the Current Loop Circuit .................................................. 3
4. Transducer Wiring ..................................................... 4
4.1 Two-Wire Transducers......................................................................... 4
4.1.1 Possible Ground Loop Problems ................................................... 5
4.1.2 Minimum Supply Voltage ............................................................. 5
4.2 Three-Wire Transducers....................................................................... 6
4.3 Four-Wire Transducers ........................................................................ 6
5. Sensor and Programming Example .......................... 7
5.1 Voltage Range ...................................................................................... 7
5.2 Calculating Multiplier and Offset—An Example ................................ 7
5.3 CR1000 Program Example .................................................................. 8
5.4 CR9000(X) Program Example ............................................................. 9
5.5 CR10(X) Program Example ................................................................. 9
5.6 CR23X Program Example.................................................................... 9
Figures
1-1. CURS100 terminal input module ......................................................... 1
2-1. CURS100 schematic ............................................................................ 2
3-1. CURS100 L terminal connected to a datalogger G terminal using
a jumper wire. ................................................................................... 4
4-1. 2-wire with datalogger power .............................................................. 4
4-2. 2-wire with external power .................................................................. 5
4-3. 2-wire supply voltage ........................................................................... 5
4-4. 3-wire with datalogger power .............................................................. 6
4-5. 3-wire with external power .................................................................. 6
4-6. 4-wire with datalogger power .............................................................. 6
4-7. 4-wire with external power .................................................................. 7
(40 pagine)
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