The strain gauge amplifier TA-8П
Print versionDeveloper: Dnepropetrovsk National University of Railway Transport named after Academician V. Lazaryan, Branch research laboratory of dynamics and durability of the rolling stock.
Manufacturer: PKF "Avtomatika-Service" (Dnipro).
This device is dedicated for measurement, registration and processing of signals of mechanical deformations, forces and pressure. TA-8P works with the personal computer which carries out functions of settig up the channels, data storage, processings and visualization of the studied processes.
|
№ |
Name and dimension of parameter |
Value of parameter |
|
1. |
Quantity of signals |
8 |
|
2. |
Connection scheme of tensoresistors |
bridge/halfbridge |
|
3. |
Nominal resistance of the tensoresistors Rn, Om |
≥200 / ≥100 |
|
4. |
Supply voltage of tenzobridge, VDC |
4.096 |
|
5. |
Power supply for tenzobridge |
separate on each channel with protection from short cercuit |
|
6. |
Communication line type |
the halfbridge – 3-wire; the bridge – 4-wire |
|
7. |
Strengthening coefficients |
400; 800; 1600; 3200; 6400 |
|
8. |
Nominal ranges of measurements ∆R/Rn at supply voltage 4.096 V and Rn=200 Om, rel. unit×10-3 |
12.5; 6.25; 3.12; 1.56; 0.78 |
|
9. |
Mode of measurements |
Static dinamic |
|
10. |
Frequency range with disconnected FLF, Hz |
0÷1000 |
|
11. |
The range of initial balancing of tensoresistors resistance dispersion profided to their nominal value, % not less |
±2 |
|
12. |
Value of resistance of the built-in imbalances, kOm |
560 |
|
13. |
Cut frequency of FLF, Hz |
20 (options are possible) |
|
14. |
Transfer coefficient of FLF |
1 |
|
15. |
Unevenness of AFCh of FLF on a pass-band, % no more |
2 |
|
16. |
Output voltage of the channel, VDC |
±5 |
|
17. |
Communication Interface with the personal computer |
≥USB 1.1 |
|
18. |
Word length of the built-in ADС, bit |
12 |
|
19. |
Maximum frequency of transformation, kHz |
120 |
|
20. |
The temperature zero drift given to an entry, mkv/°C |
2 |
|
21. |
The time of zero shift drift given to an entry after 20 min. warming up during 3 hours, mkv/°C |
5 |
|
22. |
Temperature instability of the channel transfer coefficient, rel. unit.×10-6/°C, no more |
20 |
|
23. |
Main channel error, % |
±1 |
|
24. |
Fixing of the channels settings (amplifying, balance, FLF) |
long-term, non-volatile |
|
25. |
Power supply of the device |
220 VAC, 50 Hz |
Distinctive feature of the TA-8P is exlcluding the high-frequency electromagnetic influence (portable radio stations, mobile phones, etc.) on measurement results.
