全部大地測量觀測儀器

應變計 & 鋼筋計 - Model 4200HT 高溫型應變計

Model 4200HT 高溫型應變計

The Model 4200(HT), 4202 and 4210 Vibrating Wire Embedment Strain Gages are designed for direct embedment in concrete. The Model 4200 (standard model) has a 153 mm gage length and is commonly used for strain measurements in foundations, piles, bridges, dams, containment vessels, tunnel liners, etc. The Model 4210 has a 250 mm gage length and is designed for use in mass concrete with coarse aggregates. It is extra rugged to resist bending, and has large flanges to provide greater engagement area. The 4202, with a 51 mm gage length, is designed for laboratory use and/or where there are space limitations.

Specifications
Standard Range 3000 microstrain Active Gage Length 144mm
Resolution 1.0 με Thermal Coefficient of Expansion 12.0 ppm/°C
Accuracy¹ ±0.5% F.S. Coil Resistance 120 Ω
Nonlinearity < 0.5% F.S. Cable Type 4 conductor shielded 22 awg
Temperature Range –20°C to +80°C Frequency Datum³ 800 Hz

¹±0.5% F.S. with standard batch calibration. ±0.1% F.S. with individual calibration. Accuracy established under laboratory conditions.
²Other lengths available on request.
³Typical.