VLF-201 Pressure Transmitters
Product description
The VLF-201 pressure transmitter adopts the diffused silicon pressure sensor core from an internationally renowned company. Adopt high reliability amplification circuit and precise digital temperature compensation and nonlinear correction technology,Convert the pressure of the measured medium into 4~20mA, 0~10VDC analog signals and standard digital signals such as IIC and RS485. Coupled with the versatile Herschmann plug, it ensures excellent product quality and optimal performance. Users can measure the pressure of various fluids conveniently, quickly and accurately. The ultra-high cost performance can be widely used in petroleum, chemical industry, metallurgy, electric power, variable frequency pumps, complete water supply, refrigeration, air conditioning, air compressors and other fields.
Main feature
The high-performance diffused silicon sensor core is equipped with a highly integrated bridge pressure sensor dedicated advanced chip for signal conditioning.
Digital temperature compensation and non-linear correction
A variety of signal outputs, equipped with waterproof and breathable self-forming plugs, perfectly suitable for conventional sockets such as Hirschmann and HTP, and have a wide range of applications High sensitivity, high precision, high stability
Full temperature zone temperature compensation, good electrical performance and long-term stability
Hirschmann plug, wide adaptability
Process connections can be customized
High cost performance, one year warranty
Technical specifications
| Pressure range | -1…0~0.1…700Bar | ||||
| Overload pressure | 200%FS | ||||
| Electrical connection | G1/4 etc., can be customized | ||||
| Accuracy | ±0.5％ | ||||
| Temperature drift | ±0.03%/℃ | ||||
| Temperature compensation range | -10～70℃ | ||||
| long term stability | ±0.3%FS/year | ||||
| Operating temperature | -40~85℃ | ||||
| Storage temperature | -40~125℃ | ||||
| Output signal |
absolute 0-10V |
Proportional value 0-5V |
4-20mA | IIC | 485 |
| Supply voltage (V) | 10-36 | 3.0-5.5 | 10-36 | 3.3-5.5 | 10-36 |
| Load (Ω) | ＞10K | ＞10K | ≤50(U-10) | - | - |
| Protection level | IP65 | ||||
| Media adaptability | Various fluids that are non-corrosive to 304 stainless steel | ||||
| Vibration | 10gRMS,(20~2000)Hz | ||||
| Impact | 100g,11ms |
| Insulation | more than the 100MΩ @250VDC |
| Response time | less than 1ms |
| CE certification | EMC: IEC61326-1 Category B Electrostatic discharge immunity: IEC61000-4-2 Electromagnetic field immunity: IEC61000-4-3 EFT Immunity: IEC61000-4-4 Surge Immunity: IEC61000-4-5 |
Overall dimensions (unit: mm)
Electrical connections
| Output definition |
4～20mA | Vout | IIC | RS485 |
| 1 ○ |
Vin(red) | Vin(red) | Vin(red) | Vin(red) |
| 2 ○ |
GND(black) |
GND (black ) |
SCL ( white ) |
A( yellow ) |
3 ○ |
Vout (white) |
SDA (yellow ) |
B( white ) | |
| 4 ○ |
GND ( black ) |
GND ( black ) |
Selection tips
1.When selecting, please note that the medium to be measured must be compatible with the part of the product that is in contact with the medium.
2.Voltage input and output have various ranges, which need to be specified in the order.
3.The process connection can be customized and needs to be specified in the order.
4.The IIC output type has no polarity protection. The installation and use process must be confirmed before powering on.
5.For special requirements, please discuss with our company and indicate them in the order.
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