WGA-900A
Instrumentation Amplifier
- Recommended sensors:
WGA-900A
Enables Checking Waveform through Easy Operation
Features
- Easy to see display numbers of 5 digits (±99999)
- Wide measuring range up to ±3.2mV/V
- Comparator in 5 points enables delicate monitoring and controlling
- Display of waveform
- Easy calibration even for TEDS compatible senors
- Easy operation using touch panels on with easy explanations. No need to see a operation manual.
- SD card available as standard
- High resolution and high speed sampling
- Result of comparison will be showed on different colors
- Analog-hold circuit is used for detecting peak/bottom value
- MONITOR – output, RS-232C and I/O port is equipped as standard.
- Optional BCD-output, D/A output or RS-485 card are available.
PDF download
- WGA-900A (218.54 kB)
Specifications
Standard specification
| WGA-900A-0 | |
| Number of Measuring Channels | 1 |
| Applicable Transducer | Strain gage transducer |
| Applicable Bridge Resistance | 87.5 Ω to 1 KΩ (Up to four 350 Ω transducers can be connected in parallel.) |
| TEDS Compatible | Interface: Compatible to IEEE1451.4 Mixed ModeTransducer Interface Class 2.Applicable transducer: Should have the informationaccording to IEEE template No. 33.(Cable length: 30 m or less) |
| Excitation Voltage | 10 or 2V DC |
| Input Range | ±3.2 mV/V (including zero adjustment range) |
| Nonlinearity | Within (±0.02%FS +1 digit) |
| Stability |
Zero : Within ±0.25μVRTI/°C Sensitivity : Within ±0.005%/°C |
| Peak/Bottom Detection | Detecting method : Analog circuit and digital holdin combination/Digital hold onlyFrequency response : DC to 1 kHz (+1 dB, -2dB) |
| A/D Converter | Sampling speed : 4000 times/secResolution: 24 bits |
| Analog Monitor | Voltage output: ±(5 V ±200 mV)(load resistance 5 KΩ or more) |
| Indicators | 3.5-inch STN color LCD,display area : 73.0 × 55.2 mm320 × 240 dots, touch panel |
| Indication | ±99999Speed: 3 times/sec |
| Calibration | Manual calibration : No-load zero calibration, sensitivity registeringcalibration, actual load calibration, unit |
| TEDS-based automatic calibration Partial calibration based on TEDS calibration data: TEDS calibration item | |
| TEDS operation setting : TEDS reading operation, zero at TEDS calibration time, TEDS information display | |
| Smoothing Function | Analog filter : 1, 30, 300 Hz and None(1 kHz or more)Roll-off characteristic: -12 dB/oct. |
| Minimum scale : 1, 2, 5, 10, 20, 50, 100 | |
| Moving average : None, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024,and 2048 times | |
| Zero Compensation | Zero at every preset compensation time(Conducts digital zero when the measuring valueis within the compensation range at every presetcompensation time.)Determination Time : 0.00 to 9.99 secCompensation Range : 0 to 99999 |
| Least significant digit fixed at zero(Automatically changes the least significantdigit number to zero.)Setting Range: 0 to 9 | |
| Additional Value | Setting range: ±99999 |
| Sensor Output Value | Transducer output (±3.2 mV/V) is measuredat 0.5-second intervals. |
| Measurement condition numbers | 32 points (16 for control input) of measurement condition file can be saved. Capable of switching by the key operation, control input, and communication command. |
| Comparator Setting | The number of points : 5 |
| Type: extra high (HH), high (HI), OK, low (LO), extra low (LL) | |
| Compared value : ±99999 | |
| Hysteresis Width : 0 to 9999 | |
|
Using comparator can be set. Comparison speed : 4000 times per second (Normal Comp. Mode) |
|
| Measurement Mode | Operation mode : Normal, peak hold, block-specified peak hold,time-specified peak hold, bottom hold,block-specified bottom hold,time-specified bottom hold, arbitrary point hold,block peak-bottom, time peak-bottom,block arerage, time average |
| Detect times : Delay time, comparison mode and display modecan be set. | |
| Waveform Display | X-axis setting End point : 0.5, 1.0, 2.0, 5.0, 10.0 seconds |
| Y-axis setting Start point : -99999 to 99999End point : 250, 500, 1000, 2000, 5000, 10000,20000, 50000, 100000, 200000 | |
| Start mode of waveform, passed level, passed way, hold time of waveform Displays the waveform of the input variation regardless to the “Measure Mode Set” setting. | |
| System Setting | Key lock, setting value initialize,backlight illumination time, contrast, clock |
| Self-check | Memory, channel |
| Operation Check | Display, touch panel, control input/output,communication, BCD output, D/A output, SD card |
| Control Input | Number of points : 9 |
| Type : Zero command, hold command, reset command,waveform command, TEDS command,measurement condition select 0 to 3 | |
| Signal format : Non-voltage contact signal or open collector signal(12 VDC voltage and 5 mA current can be applied.) | |
| Control Output | Number of points: 10 |
| Type : HH, HI, OK, LO, LL, healthy, abnormal channel,abnormal memory, communication error, SD | |
| Output format : Open collector | |
| Load capacity : 30 VDC, 20 mA | |
| Communication | Signaling system : RS-232C full duplex system |
| Transmission system : Asynchronous | |
| Communication speed : 2400, 4800, 9600, and 19200 bps | |
|
Bit configuration Data bit 7 Stop bit 1 Parity Odd number |
|
| Flow control Not compatible | |
| SD Card | Saving set value : Saves the all setting value (excluding thecalibration value) to the SD card. |
| Reading setting value : Reads the all setting value (excluding thecalibration value) from the SD card and rewritethose of the WGA-900A to the read one. | |
| Waveform data editing : Browsing the waveform data,changing the name of the data, | |
| Waveform data editing : deleting the data are available. | |
| Format : Erase all data that are saved in the SD card (Quick format)available | |
| Update : Capable of updating the program version that is savedin the SD card. | |
| SD card type : Up to 2 GB; Non-SDHC-compliant | |
| Power Supply | 85 to 264 VAC, 50/60 Hz, 20 VA or less |
| Dimensions | 100 mm (W) × 96 mm (H) × 135 mm (D) |
| Weight : Approx. 1.0 kg (excluding options) | |
| Operating Temperature | 0 to 40 °C, 20 to 85 %RH (noncondensing |
| Pannel cut Dimentions | 92×92mm |
Optional Accessories
AC power supply cable(P-23), SD card(2GB)
OPTION Specifications
with BCD Output
| WGA-900A-1 | |
| Output | Format : Open-collector |
| BCD data : 20 bits (4-bit×5-digit) EOC (End Of Conversion) : 1 bit | |
| Format : Open-collector Max load capacity : 30V DC, 20 mA (load resistance) | |
| Input | Number of points : 2 |
| Type : Open collector or Non-voltage contact signalVoltage 12V DC and current 10 mA can be applied. | |
|
Porality logic, EOC logic, Data logic |
Negative or positive logic |
| Transmission speed | Approx. 16, 32, 64, and125 times/sec. |
with D/AOutput
| WGA-900A-2 | |
| OutputVoltage | ±10 V (load resistance 2 kohm or more),arbitrary scaling is available. |
| Output Current | 4 to 20 mA (load resistance 500 ohm or less)4 to 20 mA output is fixed when the voltage0 to 10 V is applied. |
| Insulation Voltage | 250V AC for 1 minute (output voltage and outputcurrent are non-insulated) |
| Conversion Speed | 2000 times/sec |
| Nonlinearity | ±0.1%FS |
with RS-485
| WGA-900A-3 | |
| Signaling System | RS-485 Half duplex system |
| RS-485 Half duplex system | 2400, 4800, 9600, 19200 bps |
| Device ID | Setting range : 1 to 99 |
| Bit Structure |
Data bit : 7 Stop bit : 1 Parity : Odd number |
| Flow Control | Not compatible |
with BCD and D/A Output
| WGA-900A-12 | |
| BCD/ Binary output | |
| Output | Format : Open-collector |
| BCD data : 20 bits (4-bit×5-digit) 1 bit Over : 1 bitEOC (End Of Conversion) : 1 bit | |
| Format : Open-collectorMax load capacity : 30V DC, 20 mA (load resistance) | |
| Input | Number of points : 2 |
| Type : Open collector or Non-voltage contactsignal Voltage 12V DC and current 10 mAcan be applied. | |
| Transmission speed | Approx. 16, 32, 64,and 125 times/sec. |
| Output Voltage |
±10 V (load resistance 2 kohm or more), arbitrary scaling is available. |
| Output Current |
4 to 20 mA (load resistance 500 ohm or less) 4 to 20 mA output is fixed when the voltage0 to 10 V is applied. |
| Insulation Voltage | 250V AC for I minute (output voltage and outputcurrent are non-insulated) |
| Conversion Speed | 2000 times/sec |
| Nonlinearity | ±0.1%FS |
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