DR3451 Pressure Transmitter
DR3451 Pressure Transmitter
The DR3451 is an intelligent pressure transmitter with output RS485 or 4-20mA. It built-in high-performance diffused silicon pressure sensor and high-performance MCU. Benefit by the software and hardware anti-interference design and full digital calibration, the pressure transmitter can provide 4-20mA and RS485 communication output at the same time, no mutual interference, the overall performance of the product is stable and reliable.
Applications
- Petroleum, chemical, electric power
- Mechanical engineering
- Process control and automation
- hydrology and flow pressure measure
- Hydraulic pressure
Features
- RS485 or 4 ~ 20mADC two-wire output
- Digital compensation and nonlinear correction technology
- Anti interference design and hardware watchdog
- Support networking applications
Technical Specs
| Measurement range | -1bar…0bar~0.1bar…1000bar | Zero thermal drift | ≤±0.03%FS/℃ (≤1bar); ≤±0.02%FS/℃ (>1bar) |
| Pressure type | gauge, absolute or sealed gauge pressure | Span thermal drift | ≤±0.03%FS/℃ (≤1bar); ≤±0.02%FS/℃ (>1bar) |
| Over pressure | 200%FS or 1100bar (min. value is valid) | Compensated Temp. | -10 ℃ ~ + 80 ℃ |
| Accuracy | ±0.1% FS / ± 0.25% FS | Working temp. | -30 ℃ ~ + 70 ℃ |
| Stability | ±0.1 %FS(1 year) | Storage Temp. | -30℃～+70℃ |
| Output | 4mA~20mA DC(2-wire); RS485; | Pressure interface | NPT1/2 NPT1/4 G1/2 G1/4 M20 * 1.5 |
| Load | ≤(U-11)/0.02Ω(2-wire); | Insulation resistance | 50MΩ@50V DC |
| Housing | stainless steel 304 | Protection level | IP65 |
| Diaphragm | stainless steel 316L | Power supply | 12V~28VDC |
| Sealing ring | Viton | Cable | Φ7.5mm Polyethylene Special Cable |
Ordering Guide
| DR3451 | Pressure Transmitter | |||||
| Range | -1bar…0bar~0.1bar…1000bar | |||||
| [0～X]bar | X: the actual measured pressure | |||||
| Code | Output signal | |||||
| R1 | RS485 | |||||
| R2 | 4mA～20mA + RS485 | |||||
| Construction material | ||||||
| Code | Diaphragm | Pressure interface | Housing | |||
| M1 | SS 316L | SS 304 | SS 304 | |||
| M2 | SS 316L | SS 316L | SS 316L | |||
| Code | Notes | |||||
| B1 | 4-pin Plug connection | |||||
| B2 | Cable connection | |||||
| C1 | M20x1.5 male, face type seal | |||||
| C2 | M20×1.5 male, waterline seal | |||||
| C3 | G1/2 male | |||||
| C4 | G1/4 male | |||||
| C5 | G1/4 female | |||||
| C6 | NPT1/2 male | |||||
| C7 | NPT1/4 male | |||||
| D1 | 4digits LCD digital indicator(only for 4mA~20mA DC) | |||||
| D2 | 4digits LED digital indicator(only for 4mA~20mA DC) | |||||
| G | Gauge | |||||
| A | Absolute | |||||
| S | Sealed gauge | |||||
| DR3451- | [0~1]bar | R1 | M1 | B1C5G | The whole spec |
Outline Construction (Unit: mm)
Electrical Connection
FAQ
What’s the SPI protocal?
Serial Peripheral Interface (SPI) is a master-slave protocol-based interface bus that provides high-speed full-duplex communication and is typically used between microcontrollers and small peripherals such as shift registers, sensors, and SD cards send data. It uses separate clock and data lines, and a select line to select which device you want to talk to.