Load Cell Amplifier | Signal Conditioner | SGA
High-Speed, High-Performance Signal Conditioner for Up to 4 Strain Gauge Bridges
The SGA Load Cell Amplifier by Applied Measurements is a reliable, high-speed signal conditioner ideal for industrial environments. It transforms low-level input signals (as low as 0.06mV/V) from up to four 350Ω strain gauge bridges into stable, high-level analog outputs, including 0-5Vdc, 0-10Vdc, ±5Vdc, ±10Vdc, 4-20mA, or 0-20mA, meeting industry standards.
Key Features:
- Environmental Protection: Rated IP67 for dust and water resistance, making it suitable for demanding industrial settings.
- High-Speed Bandwidth: Operates up to 6kHz for fast, accurate signal processing.
- Power Supply Options: Available in both AC (110 or 240Vac) and DC (18-24Vdc) versions.
- Easy Setup: Non-interactive span and zero controls simplify configuration, while a variable low-pass filter enables fine-tuning.
- Flexible Applications: Dust-tight, waterproof, and suitable for various industrial uses.
- Calibration Services: Save time with our calibration services. We can pre-calibrate the SGA with any compatible strain gauge transducer in our range.
Let the SGA Load Cell Amplifier enhance your precision and efficiency with its high-performance signal conditioning and rugged design. Explore our selection of strain gauge transducers to pair seamlessly with the SGA for reliable measurement solutions.
Technical Specifications
| Parameter | Min | Typical | Max | Units |
|---|---|---|---|---|
| Power supply (SGA/A) 50 - 60Hz | 99/198 | 110/230 | 126/253 | Vac |
| Power supply DC (SGA/A and SGA/D) | 18 | 24 | Vdc (Note: 1) | |
| Power supply IS12/24 - Isolated (optional) | 9 | 36 | Vdc | |
| Power supply current DC :- (depends on loading) | 50 | 90 | 200 | mA |
| Bridge excitation (10V) 350R Strain Gauge | 9.75 | 10 | 10.25 | Vdc |
| Bridge excitation (5V) 350R Strain Gauge | 4.85 | 5 | 5.15 | Vdc |
| 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 | 6 | kHz | |
| Filter cut-off (Switchable ranges) - 3dB point | 1 | 5000 | Hz | |
| Zero temperature coefficient (@ 2.5mV/V) | 0.002 | 0.009 | %FR/ ºC at 2.5mV/V FR | |
| Span temperature coefficient | 0.007 | 0.01 | %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 164 x 84 x 55 sealed to IP65 fitted with 3 off cable glands | |||
| Controls | Gain pot, Offset pot, Coarse gain switches, Coarse offset switches, Filter cut-off switches, Output mode switch | |||
| CE Environmental Approvals | European EMC Directive 2004/108/EC, Low Voltage directive 2006/95/EC | |||