The strain gauge amplifier TA-8П

Print version
05 / 05 2015

Developer: 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.


Main technical characteristics of the device

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.


ta-8p.jpg 

Contacts:
Lazaryana st., 2,
Dnipro,
Ukraine, 49010.

Tel. / Fax: (056) 776-72-44, 793-19-08
E-mail: ONILDPPS@gmail.com

Visits : 2636

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