Industrial sensors und measurement instruments
Common industrial sensors für Temperatur, Druck, Strömung, und level measurement.
sensortypesmeasurement
Overview
Process control relies on accurate measurement of temperature, pressure, flow, and level.
Temperature Sensors
7 Zeilen
Sensor Type | Temperature Range(°C) | Accuracy | Response Time |
|---|---|---|---|
| Type K thermocouple | -200 to 1260 | ±1.5°C or 0.4% | Fast |
| Type J thermocouple | -210 to 760 | ±1.5°C or 0.4% | Fast |
| Type T thermocouple | -200 to 350 | ±0.5°C or 0.4% | Fast |
| Pt100 RTD | -200 to 850 | ±0.1°C (Class A) | Medium |
| Pt1000 RTD | -200 to 850 | ±0.1°C | Medium |
| Thermistor (NTC) | -50 to 300 | ±0.1°C | Fast |
| Infrared (non-contact) | -50 to 3000 | ±1–2°C | Very fast |
Quelle: engineeringtoolbox.com
Pressure Sensor Types
| Type | Range | Accuracy |
|---|---|---|
| Strain gauge | 0–600 bar | ±0.25% FS |
| Piezoelectric | 0–7000 bar | ±1% |
| Capacitive | 0–400 bar | ±0.075% FS |
| Manometer (U-tube) | 0–2 bar | ±1 mm |
| Bourdon tube | 0–600 bar | ±0.5–2% |
Flow Measurement
| Type | Application | Accuracy | Turndown |
|---|---|---|---|
| Orifice plate | General liquids/gas | ±1–3% | 3:1 |
| Electromagnetic | Conductive liquids | ±0.2–0.5% | 100:1 |
| Ultrasonic (transit time) | Clean liquids | ±0.5–1% | 50:1 |
| Coriolis | Mass flow (any fluid) | ±0.1–0.5% | 100:1 |
| Vortex | Steam, gas, liquid | ±0.75–1.5% | 20:1 |
| Turbine | Clean liquids | ±0.15–0.5% | 10:1 |