E4000 series offer flexible output options including 4 - 20mA current output and digital communication protocols such as HART and MODBUS, facilitating seamless connection to control and monitoring systems.
With user-friendly interface, it allows for convenient configuration and real-time monitoring of flow parameters. The transmitter boards are designed to withstand harsh industrial conditions, thanks to its robust construction and advanced anti-interference technology. It also incorporates functions like data backup and recovery, ensuring the integrity of measurement data.
Parameters
Main Features
- Low-frequency square wave excitation, with excitation frequencies of 1/10 of the power frequency, 1/12 of the power frequency, and 1/16 of the power frequency.
- Excitation current: 187.5 mA.
- Empty pipe detection function without the need for additional electrodes.
- Flow velocity measurement range: 0.1 – 15 meters per second. Flow velocity resolution: 1 millimeter per second.
- AC linear power supply, applicable voltage range: 85 – 305 VAC.
- DC power supply: 18 – 30 VDC.
- Communication functions: Supports RS232/RS485 communication based on the MODBUS RTU protocol. Optionally, HART communication is available.
- Simultaneously supports Chinese and English display modes.
- Analog current output options include 4 – 20 mA, 4 – 12 – 20 mA, and 0 – 10 mA (customization required).
- Configurable active or passive (customization required) frequency output.
- Configurable active or passive (customization required) equivalent pulse output.
- Equipped with three totalizers that can record the forward total amount, reverse total amount, and difference total amount respectively.
- Configuration function: Supports the configuration of 59 types of instrument parameters.
- Alarm function: Supports alarms for excitation, empty pipe, upper and lower limits, and excitation drive.
- Small flow linear correction function: Supports 4-point linear correction for small flow.
- Data backup and recovery: Allows for backup and recovery of the original information from the manufacturer.
Technical Specifications
| Items | Specifications |
| Operating Temperature Range | -20°C to +70°C |
| Relative Humidity | 5% to 90% |
| Analog Current Output | Output Mode: Active output is the default. Passive output requires customization.
Load Resistance: When the output is 0 – 10 mA, the load resistance is 0 – 1200 Ω. When the output is 4 – 12 – 20 mA, the load resistance is 0 – 600 Ω. When the output is 4 – 20 mA, the load resistance is 0 – 600 Ω. Basic Error: 0.1% ± 10 μA. |
| Digital Frequency Output | Output Mode: Active output is the default. Passive output requires customization.
Frequency Output Range: 1 – 5000 Hz. Electrical Isolation of Output: Photoelectric isolation. Isolation Voltage: > 1000 VDC. Frequency Output Drive: Common-ground output. The internal pull-up resistor is 2 kΩ, and the drive current is 10 mA. When using external power supply, the maximum withstand voltage is 24 VDC, and the maximum load current is 100 mA. |
| Digital Pulse Output | Output Mode: Active output is the default. Passive output requires customization.
Output Pulse Equivalent: 0.001 – 1.000 m³/cp, 0.001 – 1.000 Ltr/cp. Output Pulse Width: The maximum is 50 ms. It will automatically convert to a square wave at high frequencies. Electrical Isolation of Output: Photoelectric isolation. Isolation Voltage: > 1000 VDC. Pulse Output Drive: Common-ground output. The internal pull-up resistor is 2 kΩ, and the drive current is 10 mA. When using external power supply, the maximum withstand voltage is 24 VDC, and the maximum load current is 100 mA. |
Overall measurement accuracy
| Diameter (mm) | Flow velocity range (m/s) | Accuracy |
| 3～20 | 0.3以下 | ±0.25%FS |
| 0.3～1 | ±1.0%R | |
| 1～15 | ±0.5%R | |
| 25～600 | 0.1～0.3 | ±0.25%FS |
| 0.3～1 | ±0.5%R | |
| 1～15 | ±0.3%R | |
| 700～3000 | 0.3以下 | ±0.25%FS |
| 0.3～1 | ±1.0%R | |
| 1～15 | ±0.5%R | |
| %FS: Relative to the full – scale range;
%R: Relative to the measured value. |
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Sensor matching requirements
- Sensor matching requirements:
Users can select different excitation currents by changing the resistance value of the precision resistor in the excitation part. The default excitation current at the factory is 187.5 mA. If a 125 mA current is required, the surface – mount resistor R21 on the power supply board can be removed.
- Resistance of the sensor excitation coil:
For an excitation current of 187.5 mA: 20 – 80 Ω;
For an excitation current of 125 mA: 80 – 120 Ω.
Ordering information
| Product Type | Part No. | Description | |
| Electromagnetic Flow Transmitter Board | RS485 | E4000AR | Intergrated Electromagnetic Flow Transmitter Board |
| E4000FAR | Split-type Electromagnetic Flow Transmitter Board | ||
| E4000DR | Intergrated Electromagnetic Flow Transmitter Board | ||
| E4000FDR | Split-type Electromagnetic Flow Transmitter Board | ||
| HART | E4000AH | Intergrated Electromagnetic Flow Transmitter Board | |
| E4000FAH | Split-type Electromagnetic Flow Transmitter Board | ||
| E4000DH | Intergrated Electromagnetic Flow Transmitter Board | ||
| E4000FDH | Split-type Electromagnetic Flow Transmitter Board | ||
