SGD-EXTRA-LONG

Supported Applications

The Omega SGD Extra Long Linear Strain Gages are precision instruments designed for strain measurement in materials. The series features an extra-long pattern specifically intended for use with non-homogenous (inhomogeneous) materials, alongside standard linear patterns.

Operating Conditions & Performance

The series supports nominal resistances of 120 Ω, 240 Ω, 350 Ω, and 1000 Ω. Maximum permitted bridge energizing voltage (Vrms) varies by model configuration; documented values include 10 Vrms through 75 Vrms depending on grid size and resistance.

Temperature compensation options are available for Steel (ST), Aluminum (AL), or Uncompensated (UNC). The series includes models with term pads designated as BPT-5 and BPT-6, while other configurations do not include a specified term pad. Dimensions vary by grid size; the extra-long pattern table lists carrier dimensions ranging from 36.00 mm to 165.00 mm.

Configuration Options

The SGD series offers configurable options across grid sizes, resistances, terminations, and temperature compensation materials. The model number guide follows the format: SGD-/-.

• Grid Sizes: Available in 10 mm, 13 mm, 25 mm (SGD-30), 30 mm (SGD-30N and SGD-30), 50 mm, and 150 mm.
• Nominal Resistance: Options include 120 Ω, 240 Ω, 350 Ω, and 1000 Ω.
• Termination Types: Models are offered with Ribbon Leads or Solder Pads.
• Packaging: Standard linear patterns (SGD-10/xxx and SGD-13/xxx) are packaged in quantities of 10. Extra-long models for inhomogeneous materials (e.g., SGD-30, SGD-50, SGD-150) are packaged in quantities of 5.
• Temperature Compensation: Configurable for Steel (ST), Aluminum (AL), or Uncompensated (UNC).

Key Product Differences

The series distinguishes between standard precision linear patterns and extra-long patterns designed for inhomogeneous materials. The "Extra-Long For Inhomogeneous Material" table lists specific models such as SGD-30/120-LY40, SGD-30N/120-LY40, SGD-50/120-LY40, and SGD-150/240-LY40. These extra-long variants feature larger carrier dimensions (C) ranging from 36.00 mm to 165.00 mm compared to the standard linear patterns which have carrier C dimensions of 17.70 mm or 22.70 mm.

Termination differences are evident across model numbers: models ending in "-LY1" and "-LY3" utilize Ribbon Leads, while those ending in "-LY4" feature Solder Pads. Additionally, the SGD-30N variant presents a distinct grid geometry with Grid A at 30.00 mm (1.181 inch) and Grid B at 3.00 mm (0.118 inch), differing from the standard SGD-30 which lists Grid A as 25.00 mm or 30.00 mm depending on resistance, with a corresponding change in carrier dimensions.