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Analog Inputs and Output
Part 17997
Rev. 6, March 2011
2-13
25.
OK - System status indicator LED
: This green LED confirms that the
Hydran 201T
i
is operating properly and that the fail alarm relay is energized. It turns
off if a fail alarm condition is detected and if the fail alarm relay is de-energized.
26.
HH - High-High alarm LED
: This red LED is lit when a High-High alarm condition
is detected and the High-High alarm relay is energized.
27.
H - High alarm LED
: This red LED is lit when a High alarm condition is detected
and the High alarm relay is energized.
2.5
ANALOG INPUTS AND OUTPUT
2.5.1
Analog Inputs
The Hydran 201T
i
uses three analog inputs:
• Gas level reading (supplied by the Hydran 201 sensor)
• Temperature of the H201 sensor (supplied by the sensor thermistor)
• Temperature of the heating plate (supplied by the heating plate thermistor)
All H201T
i
’s inputs pass in a first level of processing which has the following functions:
• To protect the H201T
i
against interferences and surges
• To filter out (low-pass) the noise from signals
• To convert the signals in voltage
• To amplify the signals
Next, the signals go through an analog/digital converter so the microprocessor can use
them.
• Two calibration constants (offset and slope) are used to convert the signal from the H201
sensor.
• Three calibration constants (short circuit, open circuit and a mid-scale value) are required
to convert (nonlinear) the signals from the thermistors.
Содержание Hydran 201i
Страница 1: ...GE Energy Services Digital Energy Hydran Instruction Manual 201i System ...
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Страница 8: ...Instruction Manual viii Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 22: ...Instruction Manual xxii Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 36: ...Chapter 1 Introduction 1 10 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 72: ...Chapter 3 Hydran 201Ci Controllers 3 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 114: ...Chapter 5 Before Installation 5 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 143: ...Installation Part 17997 Rev 6 March 2011 6 29 Figure 6 9 Installing the CPU Module ...
Страница 176: ...Chapter 8 Hydran 201Ci 1 Installation 8 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 190: ...Chapter 9 Communications and Networking 9 14 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 216: ...Chapter 11 Operating the Hydran 201i System 11 8 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 236: ...Chapter 12 Troubleshooting 12 20 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 244: ...Chapter 13 Maintenance 13 8 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 254: ...Appendix B Mechanical Drawings B 2 Rev 6 March 2011 Part 17997 Figure B 3 1 5 In Adaptor ...
Страница 255: ...Hydran 201Ti Intelligent Transmitter Part 17997 Rev 6 March 2011 B 3 Figure B 4 1 In Adaptor ...
Страница 262: ...Appendix C Functional Block Diagrams C 4 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 282: ...Appendix F Default Values of the Parameters F 4 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 284: ...Appendix G Unit Conversions G 2 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Страница 298: ...Appendix I Glossary I 12 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
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