A voltage transmitter is an electronic device that converts various types of input voltages—such as AC, DC, or pulse signals—into a proportional DC voltage or current output. It also provides electrical isolation between the input and output signals, ensuring safe and accurate transmission of analog or digital data. These devices are widely used in power systems, industrial automation, and monitoring applications where precise voltage measurement and signal conditioning are required.
**Working Principle of Voltage Transmitters**
1. **Voltage Transformer**: This component reduces high-voltage signals to lower levels while providing galvanic isolation between the primary and secondary circuits.
2. **Opto-isolator**: It converts the voltage signal from the power system into a low-voltage signal and isolates it electrically, preventing interference and ensuring safety.
3. **Voltage-to-Frequency Converter**: This type of transmitter transforms the input voltage into a corresponding frequency signal, which can be easier to transmit over long distances.
4. **AC to DC Conversion**: Some transmitters convert AC voltage signals into DC signals for compatibility with control systems that require DC inputs.
Voltage transmitters typically accept a range of input voltages, such as 0–5V, 0–10V, or 1–5V, and output either a DC current (e.g., 0–10mA, 0–20mA, 4–20mA) or a DC voltage (e.g., 0–5VDC, 0–10VDC, 1–5VDC). They are commonly categorized into two types: DC voltage transmitters and AC voltage transmitters.
**AC Voltage Transmitters** are used to convert measured AC voltages into linear proportional DC outputs. They are widely applied in power systems, industrial control, and infrastructure monitoring. These devices often come in single-phase or three-phase configurations. On the other hand, **DC Voltage Transmitters** convert DC input signals into DC outputs, making them ideal for use in power management, remote monitoring, and medical equipment.
**FZL Series Rail-Mounted AC Voltage Transmitter Technical Specifications**
1. **Accuracy**: Typically 0.5% for standard industrial grade, with custom options available at 0.2%.
2. **Linearity**: Generally 0.5%, with custom versions offering 0.2% linearity.
3. **Rated Working Voltage**: DC +24V ±20%, with a maximum working voltage of ≤35V. Custom options may include AC 220V ±15%.
4. **Power Consumption**: For DC +24V, static power consumption is 4mA, with dynamic current up to 25mA ±10%. Power consumption is approximately 0.6W. Custom AC models consume 1W.
5. **Rated Input Power**: For current type, ≤1VA; for voltage type, ≤1VA.
6. **Rated Input Voltage**: Options include 70V, 100V, 120V, 250V, 300V, 450V, 500V, 600V, 800V, 1000V, or custom values.
7. **Operating Frequency**: 50Hz or 60Hz.
8. **Output Format**: Standard 2-wire system with a 4–20mA DC output. Temperature drift coefficient is ≤50ppm/°C, with a response time of ≤100ms.
9. **Load Resistance**: RL = (24V – 10V) / 0.02A = 700Ω when using a 24V supply. For 1–5V conversion, RL includes 250Ω plus the resistance of the transmission lines.
10. **Input Overload Capacity**: Current type allows 1.5x continuous and 30x peak per second; voltage type allows 1.2x continuous and 30x peak per second.
11. **Overcurrent Protection**: Internal limit set at 25mA ±10%.
12. **Surge Protection**: Two-wire port features TVS suppression with a capability of 35A/20ms/1.5kW.
13. **Reverse Polarity Protection**: The +24V power supply port includes reverse connection protection.
14. **Short-Circuit Protection**: Output current is limited to 25mA ±10% for long-term short-circuit conditions.
15. **Insulation Strength**: 2000V AC for 1 minute, with a leakage current of 1mA. Custom options available.
16. **Insulation Resistance**: ≥20MΩ (DC 500V).
17. **Operating Environment**: -25°C to +70°C, with humidity between 20% and 90% (no condensation).
18. **Storage Conditions**: -40°C to +85°C, with humidity between 20% and 90% (no condensation).
19. **Installation Method**: DIN-35mm rail mounting with M4 screw fixing.
20. **Compliance Standards**: GB/T 13850-1998.
WiFi 5 Outdoor Wireless AP
WiFi 5 Outdoor Wireless AP is a wireless access point for outdoor environments. It is a device based on the IEEE 802.11ac standard, also known as WiFi 5. The device has a number of features and advantages that make it ideal for wireless networking in outdoor environments.
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Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommtech.com