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The SGA offers a wide bandwidth and a wide input signal range. The device can be powered from AC or DC supplies providing excitation for up to 4 x 350 ohm strain gauge bridges.
The conditioned output signal can be selected from 0-20 mA, 4-20 mA, 0-10 V, 0-5 V, ±5 V or ±10 V. Options include. Isolated DC supply, DIN rail mount and OEM module.
The Strain Gauge Amplifier (SGA) is supplied in a waterproof IP65 NEMA 4 bulkhead mountable case and is robust and fully CE compliant.
| Parameter | ||||
|---|---|---|---|---|
| Min | Typical | Max | Units | |
| Power supply (SGA/A):- (110/230Vac) 50 - 60Hz | 99/198 | 110/230 | 126/253 | V AC |
| Power supply DC :- | 18 | 24 | V DC (Note: 1) | |
| Power supply IS12/24 - Isolated | 9 | 36 | V DC | |
| Power supply current DC :- (depends on loading) | 50 | 90 | 200 | mA |
| Bridge excitation (10 V range) | 9.75 | 10 | 10.25 | V |
| Bridge excitation (5 V range) | 4.85 | 5 | 5.15 | V |
| Bridge resistance | 85 | Ohms | ||
| Bridge sensitivity (Switchable) | 0.06 | 30 | mV/V | |
| Gain adjustment (Pot - fine adj.) | 0.06 | 1.0 | mV/V (Note: 2) | |
| Offset adjustment (Pot - fine adj.) | -1.25 | +1.25 | %FR (FR=Full Range) | |
| Offset adjustment (Switchable - coarse adj) | ±1.25 | ±80 | %FR | |
| Output load (Voltage output) | 2 | mA | ||
| Output load (Current output) | 0 | 500 | Ohms | |
| Bandwidth (No filter and > 2mV/V) - 3dB point | DC | 6000 | Hz | |
| Filter cut-off (Switchable ranges) - 3dB point | 1 | 5000 | Hz | |
| Zero temperature coefficient at 2.5mV/V) | 0.002 | %FR/ ºC at 2.5mV/V FR | ||
| Span temperature coefficient | 0.007 | %FR/ ºC | ||
| Linearity | 0.03 | %FR | ||
| Gain stability -1st 1000 Hours | 0.2 | %FR | ||
| Gain stability - 2nd 1000 Hours | 0.1 | %FR | ||
| 90 day Offset stability | 3.3 | uV | ||
| Output load stability gain (0 - 100%) | 0.01 | %FR | ||
| Output load stability offset (0 - 100%) | 0.01 | %FR | ||
| Power supply rejection gain (0 - 100%) | 0.01 | %FR | ||
| Power supply rejection offset (0 - 100%) | 0.01 | %FR | ||
| Operating temperature range | -10 | 50 | ºC | |
| Storage temperature range | -20 | 70 | ºC | |
| Humidity | 95 | % | ||
| Note:1 18V max at full load. | Note:2 Depends on sensitivity settings | |||
| Output Options Set by On-Board Switch | ||||
| ±10V, ±5V, 0-10V, 0-5V, 0-20mA, 4-20mA | ||||
| Connections | ||||
| Field screw terminals - 2.5mm² rising clamp | ||||
| Enclosure | ||||
| ABS case 160 x 80 x 55 sealed to IP67 fitted with 3 off cable glands | ||||
| Controls | ||||
| Gain pot, Offset pot, Coarse gain switches, Coarse offset switches, Filter cut-off switches, Output mode switch | ||||
| Environmental | ||||
| CE Environmental Approvals | European EMC Directive 2004/108/EC, Low Voltage directive 2006/95/EC | |||
| Options | Code |
|---|---|
| 18/24V DC 50-60Hz for connecting up to 4 transducers (min 350R each) in an ABS Case | SGA/D |
| 110/230V AC 50-60Hz for connecting up to 4 transducers (min 350R each) in an ABS Case | SGA/A |
| Isolated DC PSU Module for SGA/D | IS1224 |
| Retro Fit PCB Bridge Completion Module for the SGA | SGABCM |
| Accessories | Code |
| DIN Rail for SGA cased | D4 |
| File | Date | Size | |
|---|---|---|---|
| Strain gauge signal conditioner SGA datasheet (English) | 02/09/2015 | 479KB | |
| Strain gauge signal conditioner SGA operation manual (English) | 02/09/2015 | 1.4MB | |
| SGABCM Bridge Completion Module for the SGA conditioner (English) | 02/09/2015 | 554KB |
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