Campbell CR7 Manuale delle Istruzioni Pagina 141
- Pagina / 186
- Indice
- SEGNALIBRI
Valutato. / 5. Basato su recensioni clienti
SECTION 13. CR7 MEASUREMENTS
13-17
-10123456789
Excitation
+Vx
-Vx
0 V
Measurement Sequence
Integration
Integration (ms)
Integration
A/D Conversion
A/D Conversion
FIGURE 13.5-2. Excitation and Measurement Sequence for 4 Wire Full Bridge
TABLE 13.5-1. Comparison of Bridge
Measurement Instructions
Instr. Circuit Description
4 DC Half Bridge User entered settling
time allows
compensation for
capacitance in long
lead lengths. No
polarity reversal. One
single-ended
measurement.
Measured voltage
output.
5 AC Half Bridge Rapid reversal of
excitation polarity for
ion depolarization.
One single-ended
measurement at each
excitation polarity.
Ratiometric output.
6 4 Wire Slightly lower noise than
Full Bridge 9. One differential
measurement at each
excitation polarity.
Ratiometric output.
7 3 Wire Compensates for lead
Half Bridge wire resistance,
assuming resistance is
same in both wires.
Two single-ended
measurements at each
excitation polarity.
Ratiometric output.
9 6 Wire Compensates for lead
Full Bridge wire resistance. Two
or 4 Wire differential
Half Bridge measurements at each
excitation polarity.
Ratiometric output.
Calculating the actual resistance of a sensor
which is one of the legs of a resistive bridge
usually requires the use of one or two
Processing Instructions in addition to the bridge
measurement instruction. Instruction 59 takes a
value, X, in a specified input location and
computes the value MX/(1-X), where M is the
multiplier and stores the result in the original
location. Instruction 42 computes the reciprocal
of a value in an input location. Table 13.5-2 lists
the instructions used to compute the resistance
of any single resistor shown in the diagrams in
Figure 13.5-1, provided the values of the other
resistors in the bridge circuit are known.
- INSTRUCTION MANUAL 1
- WARRANTY AND ASSISTANCE 3
- CR7 OPERATOR'S MANUAL 5
- TABLE OF CONTENTS 5
- OVERVIEW 5
- PROGRAMMING 6
- DATA RETRIEVAL/COMMUNICATION 6
- PROGRAMMING EXAMPLES 7
- INSTRUCTIONS 7
- INSTALLATION 8
- APPENDICES 8
- SELECTED OPERATING DETAILS 9
- CAUTIONARY NOTES 10
- OV1. PHYSICAL DESCRIPTION 11
- OV2. MEMORY AND PROGRAMMING 13
- CONCEPTS 13
- 720 I/O MODULE 14
- OV3. PROGRAMMING THE CR7 17
- OV4. PROGRAMMING EXAMPLE 19
- 32 give the 20
- , advance to next 21
- OV5. DATA RETRIEVAL OPTIONS 25
- 700X CONTROL MODULE 26
- OV6. SPECIFICATIONS 27
- SECTION 1. FUNCTIONAL MODES 29
- CLOCK - *5 MODE 30
- MEMORY OR FLAGS - *6 MODE 30
- 1.5 MEMORY ALLOCATION - *A 32
- STATUS - *B 33
- 1.7 *C MODE -- SECURITY 34
- 1.8 *D MODE -- SAVE OR LOAD 35
- ARRAYS, AND MEMORY POINTERS 39
- 2.2 DATA OUTPUT FORMAT AND 40
- RANGE LIMITS 40
- KEYBOARD/DISPLAY - *7 MODE 41
- 3.1 PARAMETER DATA TYPES 43
- 3.2 REPETITIONS/CARD NUMBER 43
- 3.4 INDEXING INPUT LOCATIONS 44
- 3.5 VOLTAGE RANGE AND 44
- OVERRANGE DETECTION 44
- 3.6 OUTPUT PROCESSING 44
- PROGRAM CONTROL 45
- 3.8 PROGRAM CONTROL LOGICAL 46
- CONSTRUCTIONS 46
- 3.9 INSTRUCTION MEMORY AND 48
- EXECUTION TIME 48
- 3.10 ERROR CODES 51
- 4.1 ON-LINE DATA TRANSFER 53
- INSTRUCTION 96, *4 MODE 53
- 4.2 MANUALLY INITIATED DATA 54
- OUTPUT - *9 MODE 54
- 4.3 STORAGE MODULE 55
- 4.4 PRINTER OUTPUT FORMATS 56
- 5.1 TELECOMMUNICATIONS 59
- COMMANDS 59
- 6.1 PIN DESCRIPTION 63
- SILICON PYRANOMETER 69
- 7.2 DIFFERENTIAL VOLTAGE 69
- MEASUREMENT 69
- USING 723-T REFERENCE 70
- USING AN EXTERNAL REFERENCE 70
- JUNCTION 70
- DIFFERENTIAL TEMPERATURE 71
- 7.5 THERMOCOUPLES FOR 71
- THERMOCOUPLES 72
- 7.7 107 TEMPERATURE PROBE 73
- 7.9 ANEMOMETER WITH 74
- PHOTOCHOPPER OUTPUT 74
- 7.10 TIPPING BUCKET RAINGAGE 74
- WITH LONG LEADS 74
- 7.14 PRESSURE TRANSDUCER - 4 78
- WIRE FULL BRIDGE 78
- 7.17 NONLINEAR THERMISTOR IN 82
- HALF BRIDGE (CAMPBELL 82
- SCIENTIFIC MODEL 101) 82
- 8.1 COMPUTATION OF RUNNING 83
- 8.2 RAINFALL INTENSITY 84
- SYNCHED TO REAL TIME 85
- 8.4 ANALOG OUTPUT TO STRIP 86
- 8.5 CONVERTING 0-360 WIND 87
- DIRECTION OUTPUT TO 0-540 FOR 87
- STRIP CHART 87
- Parameters 6 101
- SECTION 13. CR7 MEASUREMENTS 125
- LENGTH ON THE SIGNAL SETTLING 127
- /(R ( )) 129
- 13.4 THERMOCOUPLE 135
- MEASUREMENTS 135
- 13.5 BRIDGE RESISTANCE 139
- Excitation 141
- Measurement Sequence 141
- 13.6 RESISTANCE MEASUREMENTS 143
- REQUIRING AC EXCITATION 143
- MULTIPLE I/O MODULES 144
- SECTION 14. INSTALLATION 145
- AND OPTIONS 146
- 14.3 HUMIDITY EFFECTS AND 149
- 14.4 RECOMMENDED GROUNDING 149
- PRACTICES 149
- 14.5 USE OF DIGITAL CONTROL 150
- PORTS FOR SWITCHING RELAYS 150
- 15.1 I/O CARD IDENTIFICATION 151
- NUMBER DECODING 151
- APPENDIX A. GLOSSARY 159
- This is a blank page 162
- WITH STANDARD SOFTWARE 163
- C.1 TELECOMMUNICATIONS 165
- COMMAND WITH BINARY 165
- RESPONSES 165
- C.2 FINAL STORAGE FORMAT 167
- D.1 VOLTAGE REFERENCE 171
- CALIBRATION PROCEDURE 171
- D.2 CLOCK CALIBRATION 172
- PROCEDURE 172
- FIGURE D.2-2. CR7X CPU Card 174
- LIST OF TABLES 175
- LIST OF FIGURES 177
- 13. CR7 MEASUREMENTS 178
- 14. INSTALLATION 178
- CR7 INDEX 179
- CR7 INDEX 186
Prodotti e manuali riguardandi Misurazione, test & controllo Campbell CR7
(4 pagine)© 2020, manymanuals.it. Tutti i diritti riservati | 0.172 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commenti su questo manuale