|
|
| Features |
| ■ Wide bandwidth |
| Response frequency DC to 500 kHz - AS2503 |
|
| ■ High input impedance, excellent non-linearity |
| Ensures input impedance 10 MΩ, non-linearity ±0.01%/FS. Highly accurate measurement is possible even with transducers with high resistance. - AS2503
|
|
| ■ Prevents erroneous operation. |
| Each setting key can be locked (except for CAL voltage application).
|
|
| ■ Input/output isolation ideal for system applications - AS2603 |
| Isolation circuits are used between input/output and power supply. |
|
| ■ Loaded with various filters (high pass/low-pass filters) |
|
| ■ Can be used as a voltage amplifier. |
| Can be used as a high precision voltage amplifier with a maximum gain of 10,000 times - AS2503 or 5,000 times - AS2603.
|
 |
| Functions |
| ■ Bridge Check function |
The "Bridge Check" function automatically detects disconnections, shorts, and cable breaks at each circuit of the bridge. The easy detection of disconnected or short-circuited wires reduces measurement preparation time and helps prevent problems with the input section.
|
|
| ■ Cable Length Correction function |
If the distance between the bridge circuit and the amplifier is long, the bridge voltage will drop due to the conductor resistance of the cable. In the past, remote sensing with a 6-core cable and compensation by numerical setting (cable length, wire diameter, etc.) were used. (Remote sensing was not possible with the AC strain amp using 6-core cable.) This series of products employs a unique automatic compensation circuit to compensate for bridge voltage drops even with 4-core cables, enabling highly accurate strain measurement.
|
|
|
|
| Specifications |
| Item |
AS2503
(Wide bandwidth type) |
AS2603
(Isolated type) |
| Number of channels |
1 channel/unit |
| Bridge resistance |
60 to 1,000 Ω |
| Gauge factor |
2.00 |
| Bridge power supply (BV) |
2, 3, 5, 9, 10 VDC |
| Bridge Check (BRC) function |
Detects disconnections and shorts in the bridge circuit (120 Ω or more) and disconnections in the cable to the input bridge circuit, and displays the results on LEDs. Function can be turned ON/OFF with the setting switch on the bottom.
|
| Cable Length Compensation (CLC) function |
Automatic compensation for bridge power supply voltage drop due to cable length to bridge circuit. Function can be turned ON/OFF with the setting switch on the bottom.
|
| Equilibrium adjustment range(Auto-balance) |
Resistance Deviation: ±2% (±10,000 x 10-6 strain) |
| Equilibrium adjustment accuracy |
Within ±1.0 ×10-6 strain
(RANGE = 1k, FINE = x1, BV = 2 V) |
Within ±2.0 ×10-6 strain
(RANGE = 2k, FINE = x1, BV = 2 V) |
| Maximum input range |
±125,000 x10-6 strain (RANGE = 50k, FINE = x2.5, BV = 2 V) |
±250,000 x10-6 strain (RANGE = 100k, FINE = x2.5, BV = 2 V) |
| Voltage sensitivity |
±10 V output at ±1,000 x10-6 strain (RANGE = 1k, FINE = x1, BV = 2 V) |
±10 V output at ±2,000 x10-6 strain (RANGE = 2k, FINE = x1, BV = 2 V) |
| Measurement range (RANGE) |
1k, 2k, 5k, 10k, 20k, 50k
(x10-6 strain × 2/BV value), OFF |
2k, 5k, 10k, 20k, 50k, 100k
(x10-6 strain × 2/BV value), OFF |
| Measuring range fine adjustment (FINE) |
Continuously variable within the RANGE and adjustable with the FINE knob. Amount of variation can be changed in two steps. |
| Internal Calibrator (+CAL, -CAL) |
Calibration value range ±1 to 9,999 x10-6 strain, accuracy ±(0.2% rdg + 0.5 x10-6 strain) |
| Non-linearity |
Within ±0.01%/FS |
Within ±0.05%/FS |
| Frequency characteristic (W/B) |
DC to 500 kHz +1, -3 dB |
DC to 100 kHz +1, -3 dB |
| High-Pass Filter (HPF) |
Cutoff frequency: 0.5 Hz
2-pole Bessel type (filter drop characteristics -12dB/oct) |
| Low-Pass Filter (LPF) |
Cutoff frequency: 10, 30, 100, 1k, 30 kHz
4-pole Bessel type (filter drop characteristics -24dB/oct)
|
| Temperature stability |
Zero-point |
Within ±1 ×10-6 strain/°C, within ±5 ×10-6 strain/24h |
| Sensitivity |
Within ±0.01%/°C, within ±0.05%/24h |
| Noise |
80 x10-6 strain p-p input conversion
(W/B, RANGE = 1k, FINE = x1, BV = 2 V, at 120 Ω bridge)
20 ×10-6 strain p-p input conversion (DC to 30 kHz, RANGE = 1k, FINE = x1, BV = 2 V, at 120 Ω bridge) |
50 x10-6 strain p-p input conversion
(W/B, RANGE = 2k, FINE = x1, BV = 2 V, at 120 Ω bridge)
20×10-6 strain p-p input conversion (DC to 30 kHz, RANGE = 2k, FINE = x1, BV = 2 V, at 120 Ω bridge) |
| Output voltage |
OUTPUT1 ±10 V ±5 mA, OUTPUT2 ±10 V ±10 mA |
| 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 a setting switch on the bottom. |
| Key Lock function |
Key lock ON/OFF by pressing the key lock button for 1 second |
| Remote function |
Function of the I/F connector on the back. +CAL and -CAL input, BAL function [Bridge Check (BRC), Cable Length Compensation (CLC), Auto-balance (resistor balance)], KEY LOCK |
| Saving of setup values |
Save to flash memory |
| Vibration resistance |
29.4 m/s2 (50 Hz, XYZ each for 10 minutes) and compliant with MIL-STD-810F 514,5C-1 |
| Withstand voltage |
Between input terminals (A, B, C, D, E) and the output, and the case: AC 1 kV, for 1 minute - AS2603
Between AC power input and input, output, and the case: AC 1.5 kV, for 1 minute - AS2503,AS2603
Between DC power input and input, output, and the case: AC 500 V, for 1 minute - AS2503
Between DC power input and input: AC 1 kV, for 1 minute - AS2603
Between DC power input and output, and the case: AC 500 V, for 1 minute - AS2603
|
| AC power supply |
85 to 132 VAC / 180 to 264 VAC (switchable by internal switch) 10 VA or less, 50/60 Hz |
| DC power supply |
10 to 30 VDC, 7 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 |
| External dimensions |
H143 x W49.5 x D252 mm (excluding protruding parts) |
| Weight |
Approx. 1.4 kg |
|
|
| Specifications as a voltage amplifier (only items different from strain) |
| Item |
AS2503 |
AS2603 |
| Input impedance |
Approx. 10 MΩ + approx. 10 MΩ (at DC) |
| Zero adjustment range(Auto-balance) |
±10 mV (input conversion value) (BV = 2 V), includes Auto-balance and fine tuning. |
| Equilibrium adjustment accuracy |
Within ±1 μV (input conversion value), (RANGE = 1k, FINE x1, BV = 2 V) |
Within ±2 μV (input conversion value) (RANGE = 2k, FINE x1, BV = 2 V) |
| Measurement range |
±125 mV (RANGE = 50k, FINE = x2.5, BV = 2 V) |
±250 mV (RANGE=100k, FINE =x2.5, BV = 2 V) |
| Gain |
x10,000 (RANGE = 1k), x5,000 (2k), x2,000 (5k), x1,000 (10k), x500 (20k), x200 (50k), FINE = x1 |
x5,000 (RANGE = 2k), x2,000 (5k), x1,000 (10k), x500 (20k), x200 (50k), x100 (100k), FINE = x1 |
| Gain accuracy |
±0.1% |
| Common Mode Rejection Ratio (CMRR) |
70 dB or better (50, 60 Hz) at 1 kΩ balanced input |
100 dB or more (50, 60 Hz) at 1 kΩ balanced input |
| Maximum allowable input voltage |
±8 VDC or AC peak |
| Allowable Common Mode input voltage |
±5 VDC or AC peak |
| Internal Calibrator |
Setting value: ±0.01 to 99.99 mV (±0.01 to 59.99 mV when BV = 2 V)
Accuracy: ±(0.2% rdg + 5 μV)
|
| Non-linearity |
Within ±0.01%/FS |
| Temperature stability |
Zero-point |
Within ±1 μV/°C, within ±5 μV/24h |
| Sensitivity |
Within ±0.01%/°C, within ±0.05%/24h |
| Noise |
80 μV p-p input conversion (W/B, RANGE = 1k (x10,000), FINE = x1, BV = 2 V)
20 μV p-p input conversion (DC to 30 kHz, RANGE = 1k, FINE = x1, BV = 2 V) |
50 μV p-p input conversion (W/B, RANGE = 2k (x5,000), FINE = x1, BV = 2 V)
20μV p-p input conversion (DC to 30 kHz, RANGE = 2k, FINE = x1, BV = 2 V) |
|
|
|
|
