Turndown Ratio describes the difference between the highest and lowest possible span of measurement output which can be set for a sensing device with a rangeable output signal such as 4 to 20mA output which is HART enabled.
Turn-down ratio refers to rangeable output devices and indicates how much the output setting can be changed.
e.g. A 10:1 turndown ratio on a 1 bar gauge pressure transmitter would allow the following:
- Highest range setting: 0 to 1 bar absolute = 4 to 20mA
- Lowest range setting: 0 to 100 mbar absolute = 4 to 20mA
Rangeable output measurement products
DS201P High Range Flush Pressure Gauge, Switch and Sensor
DS210 Combined Low Pressure Switch, Indicator and Sensor
XMPi Process Plant Gauge and Absolute Pressure Transmitter
DPS300 User Switchable Pressure Range, Volts or Current Output Low DP Sensor
Measurement Signal Related Terms
More pages related to measurement signal technical terms.
- 2 Wire
- 3 Wire
- 4 to 20 mA Current Loop Output Signal
- 4 Wire
- Amplified Voltage Output
- BFSG – Bonded Foil Strain Gauge
- Deadband
- Digital Interface
- FSO – Full Scale Output
- HART®
- High Frequency Response
- Intrinsic Safety
- Measurement Signal
- Millivolt Output Pressure Transducers
- mV/V – Millivolts per Volt Output Signal
- NC – Normally Closed
- NO – Normally Open
- Piezoresistive Strain Gauges
- Pressure Transmitters
- Rangeable
- Ratiometric
- Span
- Span Offset
- Span Sensitivity
- Square Root Extraction
- Threshold
- Totalizer
- Transducer
- Transmitter
- TSL – Terminal Straight Line
- TSS – Thermal Span or Sensitivity Shift
- USB
- Vented Cable
- Voltage Output Pressure Transducers
- Wheatstone Bridge Strain Gauge
- Zero Offset
- Zero Tare