Description
Product introduction:
Model: YF-2
Name: Strain amplifier
Manufacturer: Shanghai East China Electronic Instrument Factory
Application: YF-2 strain amplifier
DC bridge
Internal filter
YF－3 with bridge automatic balance
Range: 0～±100000με
Measuring wire: one wire, six wire, eight wire combination
Bridge voltage: DC 1、2、5、10V
Sensitivity coefficient: K＝2.00
Sensitivity: 0.5V/100με（bridge voltage 2V，K＝2.00）
Input characteristics: ±100mV（input resistance>10MΩ）
Output characteristics: 0～±10V（2KΩ load），0～±50mA(200Ω load)
Error
|
Model |
Linear |
Mark |
Reduce |
Frequency response |
|
YF－1 |
≯±0.05% |
≯±0.2% ±2με |
≯±0.1% |
0～25KHZ |
|
YF－2 |
≯±0.1% |
≯±0.5% ±2με |
≯±0.5% |
0～50KHZ |
|
YF－3 |
Signal noise ratio＞50dB(YF-1)\＞45 dB(YF-2、3)
Stability:
|
Model |
Zero drift |
Change of reading |
|
YF－1 |
≯±0.1%/2h |
≯±0.1%/h |
|
YF－2、3 |
≯±0.5%/2h |
≯±0.5%/h |
Resistance balance: YF－1、2：≮±0.5%（K＝2.00，strain resistance＝120Ω）
YF－3：automatic balance，≮±1%±10με（K＝2.00，strain resistance＝120Ω，reduce×1，gain 2000，bridge voltage 2V）
Working environment: temperature 0～＋40℃, relative humidity 30%～85%
Power: 220\50HZ
Weight: about 2～2.5 kg
