Industrial Sensors and Measurement Instruments
Common industrial sensors for temperature, pressure, flow, and level measurement.
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Overview
Process control relies on accurate measurement of temperature, pressure, flow, and level.
Temperature Sensors
6 rows
sensor |
|---|
| Type K thermocouple |
| Type J thermocouple |
| Type T thermocouple |
| Pt100 RTD |
| Pt1000 RTD |
| Thermistor (NTC) |
Source: 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 |