AND AS3803, AS3903 AC Strain Amplifier

Noise resistant

Input noise suppression circuitry

Number of channels

1 channel/unit

Bridge resistance

60 to 1,000 Ω

Gauge factor

2.00

Bridge power supply (BV)

Voltage

0.5 V, 2 V AC

Frequency

5 kHz sine wave

12.5 kHz sine wave

Synchronization input/output signal (OSC)

2.5 V AC

E-terminal Connection Switching function

The Shield Wire Potential Switching switch (E-SW) can be used to switch the potential of the E-terminal (Shield Wire) of the input cable to the input common (COM) or GND (casing ground potential via protective element).

Bridge Check (BRC) function

Detects disconnections and shorts in input bridge circuits with bridge resistance of 120 Ω or more and disconnections in input cables, and displays the results on LEDs. Function can be turned ON/OFF by FNC setting.

Cable Length Compensation (CLC) function

Automatic compensation for bridge power supply voltage drop due to cable length to bridge circuit (bridge resistance 120 Ω or more). Function can be turned ON/OFF by FNC setting.

Balancing adjustment range(Auto-balance)

Resistance Deviation: ±2% (±10,000 x 10^-6 strain), capacitance imbalance: Approx. 2,000 pF

Balancing adjustment accuracy

Within ±0.4 ×10^-6 strain
(RANGE = 200, FINE = x1, BV = 2 V)

Within ±1.0 ×10^-6 strain
(RANGE = 500, FINE = x1, BV = 2 V)

Maximum input range

±200,000 x 10^-6 strain
(RANGE = 20k, FINE = x2.5, BV = 0.5 V)

±500,000 x 10^-6 strain
(RANGE = 50k, FINE = x2.5, BV = 0.5 V)

Voltage sensitivity

±10 V output at ±200 ×10^-6 strain (RANGE = 200, FINE = x1, BV = 2 V)

±10 V output at ±500 ×10^-6 strain (RANGE = 500, FINE = x1, BV = 2 V)

Measurement range (RANGE)

200, 500, 1k, 2k, 5k, 10k, 20k (x10^-6 strain × 2/BV value), OFF

500, 1k, 2k, 5k, 10k, 20k, 50k (x10^-6 strain × 2/BV value), OFF

Measuring range fine adjustment (FINE)

Continuously variable within the RANGE and adjustable with the FINE knob. Variation can be changed in two steps.

Internal Calibrator (+CAL, -CAL)

Calibration value range: ±1 to 9,999 x10^-6 strain, calibration value accuracy: ±(0.5% rdg + 0.5 ×10^-6 strain)

Auto-range (ARG) function

Automatic adjustment of RANGE and FINE so that the output voltage becomes the specified value when the calibration value set in the Internal Calibrator is applied.
Output voltage value (OFF, 5 V, 8 V, 10 V) can be specified by the FNC setting.

Non-linearity

±0.1%/FS

±0.1%/FS

Frequency characteristic (W/B)

DC to 2 kHz ±10%

DC to 5 kHz ±10%

High-Pass Filter (HPF)

Cutoff frequency: 0.5 Hz, 2-pole Butterworth type (filter drop characteristic -12dB/oct)

Low-Pass Filter (LPF)

Cutoff frequency: 10, 30, 100, 300, 500 Hz, 4-pole Butterworth type (filter drop characteristics -24dB/oct)

Cutoff frequency: 10, 30, 100, 500, 3 kHz, 4-pole Butterworth type (filter drop characteristics -24dB/oct)

Temperature stability

Sensitivity

Within ±0.05%/°C, Within ±0.2%/24h

Zero-point

Within ±0.1 ×10^-6 strain/°C, ±0.5 ×10^-6 strain/24h

Noise

2.0 ×10^-6 strain p-p input conversion
(W/B, RANGE = 200,
FINE = x1, BV = 2 V, at 120 Ω bridge)

5.0 ×10^-6 strain p-p input conversion
(W/B, RANGE = 500,
FINE = x1, BV = 2 V, at 120 Ω bridge)

Output voltage

OUTPUT1 ±10 V ±5 mA (2 kΩ load or more), OUTPUT2 ±10 V ±10 mA (332 kΩ load or more), Operable at output resistance 0.5 Ω or less, capacitive load up to 0.1 µF.

Output adjustment

OUTPUT2 ADJ (continuously variable from 1 to 1/10 independently)

Level indication

17-dot LED display for monitoring OUTPUT1, Green LED in the center lights up within approx. ±100 mV and LEDs on both ends blink at approx. ±10.5V or more

Digital display

4 1/2 digit digital display for OUTPUT2 monitor, scaling available with OUTPUT2 ADJ. Decimal point position can be changed by FNC setting.Accuracy: Within ±0.05% rdg ±1 count

Key Lock function

Key lock ON/OFF of the operation panel is possible by pressing the key lock button for about 1 second (excluding the calibration value application switch (+CAL, -CAL) )

Remote function

Rear interface connector: D-SUB, 9P, female, Mounting: #4-40 inch screw
+CAL and -CAL input, BAL function [Bridge check (BRC), Line length correction (CLC), Auto range (ARG), Auto balance (resistance balance)], RANGE OFF and KEY LOCK controls are possible by external signal

Saving of setup values

Save to flash memory

Vibration resistance

29.4m/s² (50 Hz, XYZ each for 10 minutes) and compliant with MIL-STD-810G-514.6

Withstand voltage

Between input terminals (A, B, C, D, E) and the output, and the case: 1 kV AC for 1 minute
Between AC power input and signal input, output, and the case: 1.5 kV AC for 1 minute
Between DC power input and signal input: 1 kV AC for 1 minute
Between DC power input and signal output, and the case: 500 V AC for 1 minute

AC power supply

100 to 120 V AC / 200 to 240 V AC (switchable with [AC power supply voltage switch] on the bottom)
Approx. 9VA when AC100V, Approx. 11VA when AC120V, Approx. 12VA when AC240V

DC power supply

10 to 30 V DC, 6 VA or less

Operating temperature/humidity

-10°C to +50°C, within 20% to 85% RH, with no condensation

Storage temperature/humidity

-20°C to +70°C, within 10% to 90% RH, with no condensation

External dimensions

H143 x W49.5 x D252 mm (excluding projection)

Weight

Approx. 1.4 kg