VLF-211 High Temperature Pressure Transmitter
Product Description
VLF-211 high temperature type pressure transmitter adopts the diffusion silicon pressure sensor core of the international famous company, after the highly reliable amplification circuit and precision digital temperature compensation and non-linear correction technology, the pressure of the measured medium will be converted into 4-20mA, 0-10VDC analogue signals and IIC, RS485 and other standard digital signals; the shell heat sink design can be used in high temperature scenarios. Equipped with universal Hirschmann plugs to ensure the excellent quality and best performance of the product. Users can easily, quickly and accurately measure the pressure of various types of fluids, cost-effective can be widely used in petroleum, chemical, metallurgy, electric power, frequency pumps, complete sets of water supply, refrigeration, air conditioning, air compressors and other fields.
Features
The heat sink design of the shell can be used in high temperature scenes
High-performance diffused silicon sensor core with highly integrated bridge pressure sensor signal conditioning dedicated advanced chip
Digital temperature compensation and nonlinear correction
Multiple signal outputs, with self-made molded plugs, waterproof and breathable, perfectly adapted to conventional sockets such as Hirschmann and HTP, with a wide range of adaptability
High sensitivity, high precision, high stability
Warming up the entire temperature range. Good electrical performance and long-term stability
Hirschmann plug, wide adaptability
Process connections can be customized
High-cost performance, one-year warranty
Technical Parameters
| Range | -1…0~0.1…700Bar | |||||
| Overload pressure | 200%FS | |||||
| Process connection | G1/4, etc., customizable | |||||
| Comprehensive accuracy | ±0.5% | |||||
| Temperature drift | ±0.03%/℃ | |||||
| Temperature compensation range | -20～85℃ | |||||
| Long-term stability | ±0.3%FS/year | |||||
| Ambient temperature | -40~85℃ | |||||
| Medium temperature | -40~120℃ Six heat sinks | -40~150℃+ heat sink | ||||
| Output signal |
Absolute 10V |
Proportion al 0-5V |
4-20mA | IIC | 485 | |
| Power Supply (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 | |||||
| Medium adaptability | Various fluids that are non-corrosive to 304 stainless steel | |||||
| Vibration | 10gRMS, (20~2000) Hz | |||||
| Shock | 100g, 11ms | |||||
| Insulation | More than 100MΩ @250VDC | |||||
| Response time | Less than 1ms | |||||
| CE certification | EMC: IEC61326-1 Class B Electrostatic discharge immunity: IEC61000-4-2 Electromagnetic field immunity: IEC61000-4-3 EFT immunity: IEC61000-4-4 Surge immunity: IEC61000-4-5 |
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Dimensions (in mm)
Electrical connection
| 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
- When selecting the model, please note that the medium to be measured must be compatible with the part of the product that comes into contact with the medium.
- Voltage input and output have various ranges, which need to be specified in the order.
- Process connections can be customized and must be specified in the order.
- The IIC output type has no polarity protection. The installation and use process must be confirmed to be correct before powering on.
- For special requirements, please contact us and indicate them in the order.
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