COND SGA-A & SGA-D Manuel_EN Rev3.doc
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Rev: 03/08/2006
COND SGA-A & COND SGA-D
STRAIN GAUGE TRANSDUCER AMPLIFIER
1. INTRODUCTION......................................................................................................................................................................................................... 2
2. INSTALLING THE COND SGA/A & COND SGA/D .................................................................................................................................................... 2
2.1. Pre Installation.................................................................................................................................................................................................... 2
2.2. Dimensions......................................................................................................................................................................................................... 3
2.3. Cabling................................................................................................................................................................................................................ 3
2.3.1. Power Connection ..................................................................................................................................................................................... 3
2.3.2. Input (Sensor) Connections....................................................................................................................................................................... 4
2.3.3. Output Connections................................................................................................................................................................................... 5
3. SWITCH SETTINGS ................................................................................................................................................................................................... 6
3.1. Output Settings - Switch 4.................................................................................................................................................................................. 6
3.1.1. Output Option ............................................................................................................................................................................................ 6
3.1.2. Switch 4 ..................................................................................................................................................................................................... 6
3.1.3. Example :- 0-10 Volt output with no filter required. ................................................................................................................................... 7
3.2. Output Filter Settings –Switch 3 ......................................................................................................................................................................... 7
3.2.1. Switch 3 ..................................................................................................................................................................................................... 7
3.2.2. Example : The Switch Settings for a cut-off frequency of 50 Hz setting is illustrated below..................................................................... 8
3.3. Output Current Mode and Input Filter Settings – Jumpers JP1, JP2 & JP3....................................................................................................... 8
3.4. Span (Gain) Setting Switch 1 ............................................................................................................................................................................. 8
3.4.1. SW1 ........................................................................................................................................................................................................... 9
3.4.2. Example : A strain gauge has a sensitivity of 2.809 mV /V..................................................................................................................... 10
3.5. Shunt Calibration Switch SW1/8....................................................................................................................................................................... 10
3.6. Zero (Offset) Setting Switch SW2..................................................................................................................................................................... 10
3.6.1. Example :An installation has a tare of 15 kg with a 200kg strain gauge which gives an output of 6.37mV/V at 10V excitation............. 11
4. CALIBRATION........................................................................................................................................................................................................... 11
4.1. Output............................................................................................................................................................................................................... 11
4.2. Zero Offset........................................................................................................................................................................................................ 11
4.3. Sensitivity.......................................................................................................................................................................................................... 11
4.4. Calibration Connections using mV Source....................................................................................................................................................... 12
5. TROUBLESHOOTING .............................................................................................................................................................................................. 13
5.1. No output .......................................................................................................................................................................................................... 13
5.1.1. For voltage output.................................................................................................................................................................................... 13
5.1.2. For current output .................................................................................................................................................................................... 13
5.2. Low Output ....................................................................................................................................................................................................... 13
5.3. High output ....................................................................................................................................................................................................... 14
5.4. Unstable Output................................................................................................................................................................................................ 14
5.4.1. Poor Installation....................................................................................................................................................................................... 14
5.4.2. Noisy Environment................................................................................................................................................................................... 14
5.5. Calibration......................................................................................................................................................................................................... 14
5.6. Fine Span (Gain) and Zero (Offset) Adjustment Problems .............................................................................................................................. 14
6. PRODUCT CARE...................................................................................................................................................................................................... 15
7. GLOSSARY............................................................................................................................................................................................................... 15
8. SPECIFICATIONS FOR COND SGA/A & COND SGA/D LOAD CELL AMPLIFIERS ............................................................................................. 18
8.1. Parameter......................................................................................................................................................................................................... 18
8.2. Output options .................................................................................................................................................................................................. 19
8.3. Connections...................................................................................................................................................................................................... 19
8.4. Enclosure.......................................................................................................................................................................................................... 19
8.5. Controls ............................................................................................................................................................................................................ 19
8.6. EMC Approvals................................................................................................................................................................................................. 19
8.7. W A R R A N T Y .............................................................................................................................................................................................. 19
8.8. Connection Details ........................................................................................................................................................................................... 20
