90º Strain Gauges
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Product Description
BCM SENSOR 90° type strain gauges or T rosettes are specially developed for manufacturing column load cells which employ column working principle. For the purpose of this specific application, the 90° strain gauges are temperature and creep compensated, and they can be either encapsulated or open-faced according to the requirement.
The karma gauges can be manufactured with effective modulus compensation (EMC). The EMC gauges are mostly for manufacturing low-cost force transducers, because with the EMC gauges the manufacturers can eliminate the use of compensation resistors and achieve the sensitivity compensation.
For creep compensation, there are 18 creep codes: “N10, N9, N8, …, O, …, P5, P6, P7″. The “N10” is the most negative creep code, while the “P7″ is the most positive one. The “O” stands for a moderate creep code. For a specific strain gauge, please find its available creep code below its dimensions at the “Option *9″ on the following pages. For a customized creep code, consult BCM SENSOR.
For more information on self-temperature compensation (STC), creep compensation, and EMC of strain gauges, please refer to the corresponding articles respectively on the website of BCM SENSOR.
Additional Information
| Pattern | 2 grid / 90º (or T): BB, BB(A), BB(B) |
|---|---|
| Nominal Resistance | 350Ω, …, 3000Ω |
| Backing Material | modified phenolic resin (F), modified polyimide resin (I), laminated polyetherketone (B), advanced laminated polyimide (A), laminated polyimide (L) |
| Working Temperature Range | -30~+80°C for backing F, -85~+150°C for backing I, -45~+150°C for backing B, -195~+200°C for backing A, -55~+150°C for backing L |
| Tolerance Of Resistance | <±0.1% |
| Gauge Factor | constantan: 2.1±0.1, karma: 2.03±0.17 |
| Gauge Factor Dispersion | <±1% |
| Maximum Working Strain | ±5000µε |
| Strain Limit | up to ±30000µε |
| Fatigue Life | >10^7 at 1000µε |
