SGD-3-ELEMENT45-90

Supported Applications

The Omega SGD series comprises precision rectangular corner rosette strain gauges configured with a 0°/45°/90° pattern. These sensors are designed for measuring multi-directional strain in structural and mechanical testing applications.

Operating Conditions & Performance

Performance parameters vary by model size, nominal resistance, termination type, and temperature compensation material. The series offers three distinct physical sizes with corresponding grid dimensions:

• Size 1 (9.3 mm carrier): Grid A dimension of 1.6 mm (0.063 inch) and Grid B dimension of 1.7 mm (0.067 inch).
• Size 3 (11.0 mm carrier): Grid A dimension of 3.0 mm (0.118 inch); Grid B dimensions are 1.7 mm (0.067 inch) for 120 Ω models and 2.1 mm (0.83 inch) as printed in the source table for 350 Ω models.
• Size 6 (16.3 mm carrier): Grid A dimension of 6.0 mm (0.236 inch); Grid B dimensions are 3.2 mm (0.126 inch) for 120 Ω models and 3.1 mm (0.122 inch) for 350 Ω models.

Maximum permitted bridge energizing voltage ranges from 3 Vrms to 20 Vrms depending on the specific configuration of resistance, size, termination, and temperature compensation material.

Configuration Options

The SGD series is configurable across multiple parameters including nominal resistance, physical dimensions, electrical connection methods, and base metal compatibility. The following options are available:

• Nominal Resistance: 120 Ω or 350 Ω.
• Termination Types: Ribbon Leads (RYT) or Solder Pads (RYP).
• Temperature Compensation Materials: Steel (ST) or Aluminum (AL).
• Packaging: Sold in packages of 10.

Custom-designed strain gages are available with no minimum quantities; consult engineering for details. Accessories information is referenced online by the manufacturer.

Key Product Differences

Variants within the SGD series differ primarily in size code, resistance value, and termination/compensation combinations as indicated in the model number structure: SGD---RYT-. Specific distinctions include:

• Size 1 Models (e.g., SGD-1): Feature a 9.3 mm carrier with the smallest grid dimensions.
• Size 3 Models (e.g., SGD-3): Utilize an 11.0 mm carrier and intermediate grid sizes.
• Size 6 Models (e.g., SGD-6): Employ a 16.3 mm carrier with the largest grid dimensions in the series.

Voltage ratings increase with larger physical sizes, higher resistance values, and specific termination/compensation pairings; for example, Size 6 models with 350 Ω nominal resistance and Aluminum compensation support up to 20 Vrms (Ribbon Leads) or 14–20 Vrms depending on the exact model row.