服务热线
OMEGA提供应力消除或残余应力模式应变计。这些应变计安装在已经受力的试件上。仪器连接到应变片中的所有3个元素。应力大小是通过在应变计中心钻孔或钻一个小孔来卸载试样来确定的。通过去除材料，您可以释放应力，并测量孔附近的松弛残余应力。孔径和深度为1.85毫米（0.07英寸）
OMEGA应变片订货信息：
| 图片 |
型号(10件装) |
NOM. |
尺寸mm(inch)† |
max PERMITTED |
TERMINATION |
TEMP |
COMP |
|||
| grid |
carrier |
|||||||||
| A |
B |
C |
D |
|||||||
| 矩形应变花 |
||||||||||
| 实际尺寸27mm
|
SGD-13/120-RY91 |
120 |
11.0 |
5.0 |
27.0 |
27.0 |
15 |
Ribbon Leads |
ST |
BPT-6 |
| SGD-13/120-RY93 |
120 |
20 |
Ribbon Leads |
AL |
||||||
| SGD-13/120-RY21 |
120 |
Corner rosette |
15 |
Solder Pads |
ST |
|||||
| SGD-13/120-RY23 |
120 |
20 |
Solder Pads |
AL |
||||||
| 残余应力应变花 |
||||||||||
| 实际尺寸10.5mm
|
SGD-1.5/120-SR11 |
120 |
1.20 |
1.33 |
10.50 |
10.50 |
2.5 |
Ribbon Leads |
ST |
BPT-6 |
| SGD-1.5/120-SR13 |
120 |
3.5 |
Ribbon Leads |
AL |
||||||
| SGD-1.5/120-SR41 |
120 |
Corner stress |
2.5 |
Solder Pads |
ST |
|||||
| SGD-1.5/120-SR43 |
120 |
3.5 |
Solder Pads |
AL |
||||||
典型应变片安装
规格：
| SGD系列 |
KFH系列—预接线 |
|
| 铝箔测量栅 |
Constantan foil 5 microns thick |
Constantan foil 6 microns thick |
| 载体 |
Polyimide |
Kapton® |
| 基板厚度 |
20 microns |
15 microns |
| 盖板厚度 |
25 microns |
9 microns |
| 连接尺寸:mm(inch) |
Solder pads or ribbon leads, tinned copper flat wire 30Lx0.1Dx0.3mmW (1.2x0.004x0.012") |
Pre-wired,2 or 3 leads 27 AWG strand polyvinyl insulation 1x2mm(0.04x0.08") |
| 标称电阻 |
Stated in “To Order” box |
120 ±0.4 or 350Ω |
| 每个封装的电阻容差 |
±0.15% to ±0.5% depending on gage spec |
0.3% |
| 表压系数: 每个包装上印有实际值） |
2.0 ±5% |
2.10 ±10% |
| 每个封装的表压系数公差 |
1.00% |
1.00% |
| THERMAl属性 |
||
| 参考温度 |
23℃(73℉) |
23℃(73℉) |
| 使用温度 |
||
| 静态测量 |
-75 to 200℃(-100 to 392℉) |
-20 to 100℃(-4 to 212℉) |
| 动态测量 |
-75 to 200℃(-100 to 392℉) |
-20 to 100℃(-4 to 212℉) |
| 温度特性 |
||
| 钢（和某些不锈钢） |
11 ppm/℃(6.1 ppm/℉) |
10.8 ppm/℃(6 ppm/℉) |
| 铝 |
23 ppm/℃(12.8 ppm/℉) |
—— |
| 无偿 |
±20 ppm/℃(11.1 ppm/℉) |
—— |
| 温度补偿范围 |
-5 to 120℃(5 to 248℉) |
10 to 80℃(50 to 176℉) |
| 温度补偿的容差 |
2 ppm/℃(1.0 ppm/℉) |
1 ppm/℃(0.5 ppm/℉) |
| MECHANICAl属性 |
||
| 至大应变 |
3% or 30,000 microstrain |
5% or 50,000 microstrain |
| 磁滞现象 |
Negligible |
Negligible |
| 疲劳(at±1500 microstrain) |
>10,000,000 cycles |
>10,000,000 cycles |
| 至小弯曲半径 |
3mm(1⁄8") |
3mm(1⁄8") |
| 横向灵敏度 |
—— |
Stated on each package |