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Technical Specifications
| Input | ||
| Measured Variable | Gauge pressure, Absolute pressure, Sealed gauge pressure | |
| Measuring Range | –100 kPa to 0…10 kPa up to 60 MPa | |
| Output | ||
| Analog Output | Output Type | Load Resistance RL |
| 4–20 mA (without display) | RL ≤ (U − 9 V) / 0.02 A | |
| 4–20 mA (with display) | RL ≤ (U − 13 V) / 0.02 A | |
| 0–5 V | RL ≥ 5 kΩ | |
| 1–5 V | ||
| 0–10 V | ||
| Note: U refers to the supply voltage (V). | ||
| Communication Output | RS485 interface, Modbus protocol | |
| Power Supply | ||
| Power Supply | Output Type | Supply Voltage |
| 4–20 mA output without display | 9–32 VDC | |
| 4–20 mA output with display | 12–32 VDC | |
| 0–5 V / 1–5 V / 0–10 V output | 12–32 VDC | |
| 4–20 mA + RS485 output with display | 10–32 VDC | |
| Electrical Connection | M20 × 1.5 cable gland | |
| Performance | ||
| Accuracy | Class 0.2 / 0.25 / 0.5 | |
| Long-term Stability | ±0.2% FS/year， Note: For pressure ranges below 35 kPa, accuracy is increased proportionally. | |
| Response Time |
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| RS485 output: T90 ≤ 100 ms | ||
| Temperature Drift | 10 kPa ≤ range ≤ 60 kPa: 2% FS (within compensated temperature range) | |
| 60 kPa < range ≤ 60 MPa: 1.5% FS (within compensated temperature range) | ||
| Compensated Temperature Range | 10 kPa ≤ range < 25 kPa: 0 to 60 °C | |
| 25 kPa ≤ range ≤ 60 kPa: 0 to 70 °C | ||
| 60 kPa < range ≤ 60 MPa: −10 to 70 °C | ||
| Insulation Resistance | 20 MΩ @ 250 VDC | |
| Ingress Protection | IP65 | |
| Process Conditions | ||
| Overload Pressure | 0.035–10 MPa: 150% FS | |
| 10–60 MPa: 125% FS | ||
| Medium Temperature | −20 to 85 °C | |
| Ambient Conditions | ||
| Operating Temperature | −20 to 85 °C | |
| Storage Temperature | −40 to 85 °C | |
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Applications
The 2088 Housing High-Temperature Digital Pressure Transmitter is widely used in:
Industrial process control systems
Petroleum and oil & gas processing
Chemical and petrochemical industries
Metallurgical and steel plants
High-temperature fluid and gas pressure monitoring
Industrial automation and DCS / PLC systems
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Measuring principle
The transmitter operates based on the piezoresistive effect of a diffused silicon pressure sensor. When pressure from the measured medium is applied to the diaphragm, the diaphragm undergoes a micro-displacement proportional to the applied pressure.
This deformation causes a corresponding change in the resistance of the diffused silicon elements. The internal electronic circuit detects and amplifies this change and converts it into a standardized electrical signal corresponding to the measured pressure value.
