KYOWA CDA-44AS Constant Current Amplifier Card, Compatible Bridge Resistance 120 Ω Conditioner Cards

Channels

4

Input Resistance

Approx. 10 MΩ + 10 MΩ (Strain mode)
Approx. 1 MΩ (Voltage mode)

Input Format

Balanced differential input (Strain mode)
Unbalanced input (Voltage mode)

IMRR

120 dB (When 500 ×10^-6 strain range)

Frequency Response

[DC coupling]
　DC to 200 Hz, deviation: +1 dB, -3 dB

[DC cut (AC coupling)]
　0.2 Hz (See the HPF)

Gage Factor

2.00 fixed (Strain mode)

Compatible Bridge Resistance

120 Ω

Bridge Excitation

Approx. DC 16.7 mA (Constant current) when gage resistance 120 Ω connected

*If sensitivity or temperature resistance is in the transducer bridge excitation lines, then sensitivity and temperature characteristics are not corrected.

Cable Length

500 m (At cross section: 0.5 mm²)

Range Accuracy

Within ±0.3% FS

Measuring Range

500, 1 k, 2 k, 5 k, 10 k, 20 k ×10^-6 strain, OFF (Strain mode)
1, 2, 5, 10, 20, 50 V, OFF (Voltage mode)

Balance Adjustment

Within ±2.4% (±12000 ×10^-6 strain) (At strain measurement)
Within ±5 V (At voltage measurement)

ZERO Accuracy

Within ±0.3% FS (Voltage OFF mode)

Nonlinearity

Within ±0.1% FS

Calibration (CAL)

Output at ±100% and ±50% of each range
Accuracy: Within ±0.3%FS

Monitor Output

Accuracy: Within ±5 V ±0.5%

LPF

Transfer characteristic : 2nd order Butterworth
Cutoff frequencies : 1, 3, 10, 30, 100 Hz and FLAT (6 steps)
Amplitude ratio at cutoff point : -3 ±1 dB
Attenuation : (-12 ±1) dB/oct.

HPF

Cutoff frequencies : 0.2 Hz
Attenuation : Within (-6 ±1) dB/oct.

AD Converter

16 bits

TEDS

Reads information from TEDS-installed sensors.

Isolation

Between input and case (output): Withstand voltage 500 VDC,1 min.
Between channels: Withstand voltage 500 VDC,1 min.