Trans-Tek 1000系列振荡器/解调器为交流LVDTs提供完整的电气支持。这些模块采用未经调节的DC输入，为传感器产生稳定的正弦激励电压。模块的相敏解调器将LVDT的次级电压转换成DC电压。该解调器具有自动相位同步功能，无需为每个传感器调整相位角，从而简化了安装和设置。末级的有源三极点滤波器可降低输出纹波，同时最大限度地提高频率响应。其他功能包括零点和量程控制、全封装、用于安装的螺纹插件和自锁端子板。
关键特征
- 支持5线和6线LVDTs
- 内部调节的
- DC电压或4-20毫安输出
- 高频响应
ELECTRICAL SPECIFICATIONS
| INPUT POWER | Voltage | ±14.5 to ±28 VDC, Input polarity protected NOTE: DUAL DC OUTPUT POWER SUPPLY REQUIRED |
| Current | ±150 mA Max. plus LVDT current | |
| OSCILLATOR OUTPUT TO LVDT | Voltage | 4.25 to 5.75 VRMS adjustable via 15 turn span control |
| Current | Will drive LVDTs with primary impedance of 100 Ohms or greater. Short circuit and thermally protected | |
| SIGNAL OUTPUT – VOLTAGE | Voltage | DC output is 2 times the RMS output of the LVDT. Output voltage is limited to ±12 VDC. |
| MODELS 1000-0011, 1000-0012, 1000-0014 | Current | ±3 mA without distortion |
| Impedance | Less than 5 Ohms | |
| Ripple | 0.015 VRMS Max. | |
| SIGNAL OUTPUT – CURRENT | Current | 4-20 mA output with LVDT whose sensitivity is 0.5 V/V (±10%). Min. Full Scale Output current: 2-22 mA |
| MODELS 1000-0021, 1000-0022, 1000-0024 | Load Impedance | > 1×1010 Ohms; Operation into loop impedance between 5 and 400 Ohms. |
| ACCURACY | Non-linearity | ±0.05% Max. over ±10 VDC output |
| Temp. Coef. | < ±0.00025V/°F Zero, < ±0.01% output/°F Span | |
| TEMPERATURE RANGE | Operating | +32 °F to +158°F (0°C to +70°C) |
| Storage | -67 °F to +257°F (-55°C to +125°C) | |
| ZERO ADJUSTMENT | ±0.40 Min. VDC via 15 turn zero control | |
| TERMINAL CONÇNECTIONS | Friction terminals with self locking screws, accepts up to #16 AWG wire. |
BLOCK DIAGRAM
INTERCONNECTION DIAGRAM
