KYOWA CVM-41A Strain/Voltage/Acceleration Measurement Card Conditioner Cards

Applicable Recorders

EDX-100A, EDX-200A, EDX-5000A

Channels

8

Measuring Targets

Strain gages, strain-gage transducers
* For strain measurement, use bridge boxes

Voltage
Voltage-output sensors

Piezoelectric accelerometers (Built-in amplifier)

Input Modes

[Strain measurement]
　Balanced differential input

Balanced differential input
*When using the Conversion Adapter FV-1A, this becomes unbalanced input
*Common mode input voltage range ±20 VDC, absolute input voltage range ±50 V

Unbalanced input
　*Conversion Adapter FV-1A usage possible

Input Impedance

-

1 MΩ + 1 MΩ
　Within ±10%
*When using Conversion Adapter FV-1A (At unbalanced input), within 1 MΩ ±10%

-

Bridge Excitation or Power Supply to Sensors

Const. voltage output
BV2V: 2 VDC
BV5V: 5 VDC
BV10V: 10 VDC

Const. voltage output
　BV2V: 2 VDC (±1 V)
　BV5V: 5 VDC (±2.5 V)
　BV10V: 10 VDC (±5 V) or OFF
　20 mA/channels or less

Const. current output (Approx. 4 mA)
　(Excitation voltage: Approx. 23 VDC, Load: 1 kΩ or less)

*Each channel settable.
The max. channels of CVM-41A in EDX-100A is 3 times of units of CVM

Gage Factor

2.00 fixed

-

-

Compatible Bridge Resistance

BV2V: 120 to 1000 Ω
BV5V: 350 to 1000 Ω
BV10V: 500 to 1000 Ω

-

-

Balance Operation Settings(Zero suppression)

-------Autobalance enabled
Cancel the unbalanced bridge portion in the analog circuit, and zero the measurement value.

-------Autobalance disabled
Do not cancel the unbalanced bridge portion
(The initial unbalanced value in the bridge circuit can be confirmed)

-------Zero suppression enabled
Cancel the input voltage in the analog circuit, and zero the measurement value

-------Zero suppression disabled
Do not cancel the input voltage in the analog circuit
(Display the input voltage as is)

-

Balance Adjustment Range

BV2V: Resistance ±10% (±50k ×10^-6 strain)
BV5V: Resistance ±4% (±20k ×10^-6strain)
BV10V: Resistance ±2% (±10k ×10^-6 strain)

±5 V

-

Measuring Range

BV2V: 5 k, 10 k, 20 k, 50 k, 100 k, 200 k, 500 k ×10^-6strain
BV5V: 5 k, 10 k, 20 k, 50 k, 100 k, 200 k ×10^-6 strain
BV10V: 2 k, 5 k, 10 k, 20 k, 50 k, 100 k ×10^-6 strain

1, 2, 5, 10, 20, and 50 V

100, 200, 500, 1000, 2000, and 5000 mV

Range Accuracy

Within ±0.2%FS

Within ±1.0%FS

Nonlinearity

Within ±0.1%FS

Within ±0.2%FS

Calibration (CAL)SHUNT CAL

±100% and ±50% of each range and SHUNT
*When SHUNT CAL has 350 Ω load connected, approx. 257 ×10^-6 strain output.

±100% and ±50% of each range

±100% and ±50% of each range

Frequency Response

DC coupling: DC to 5 kHz, deviation +1dB, -3dB
AC coupling: 0.2, 1 Hz to 5 kHz (See the HPF.)

0.5 Hz to 5 kHz, deviation +1dB, -3dB

LPF

Transfer characteristics : 5 Butterworth type
Cutoff frequencies : 30, 100, 300, 1 k, 3 k Hz, FLAT and AUTO
*With AUTO settings, the cutoff frequency is set to 1/4 of the sampling frequency.
Cutoff accuracy : Within -3 ±1 dB
Attenuation : -30 (+3, -7) dB /oct.

HPF

Cutoff frequencies: 0.2 Hz, 1 Hz
Attenuation: -6 dB/oct.

Cutoff frequencies: 0.2 Hz, 1 Hz
　Attenuation: -6 dB/oct.

-

Resolution

24 bits
*When installed in EDX-100A, its resolution becomes 16 bits.

Distortion Rate

-

-

1% or less

Monitor Output

Accuracy: Within ±5 V ±0.5% (With ±FS)
Nonlinearity: Within ±0.5%FS

Dimensions

22 W x 119 H x 213 D mm (Excluding protrusions)

Weight

Approx. 400 g

TEDS

Reads information from TEDS-installed sensors.

Compliance

Directive 2014/30/EU (EMC)
Directive 2011/65/EU, (EU) 2015/863 (10 restricted substances) (RoHS)