## Transmitter Turndown Ratio, Set Span and Zero Span

Explanation of the terms: Transmitter’s Turn down (TD) ratio, set span and zero based span Consider a Pressure Transmitter and

Explanation of the terms: Transmitter’s Turn down (TD) ratio, set span and zero based span Consider a Pressure Transmitter and

Calibration can be carried out using a handheld communicator in the field, a laptop on the bench in the workshop,

Range Setting (Re-range) Range setting (re-ranging) refers to setting the scale for the 4 mA and 20 mA points. This

Transmitter Output Current Trim (Analog Trim) It is rare for the analog output current circuitry of a 4-20 mA transmitter

One of the most misunderstood concepts when dealing with transmitters is zero elevation and suppression. Elevation and suppression adjustments are

The formula for calculating equivalent current (ma) from known process variable (PV), Lower range value (LRV) and Upper range value

Closed Tank Level Measurement with Dry leg and Transmitter installed below Tapping Point This calculation used for closed tank level

Closed Tank Level Measurement with wet leg and Transmitter installed below Tapping Point This calculation used for closed tank level

Open Tank Level Measurement (Single Seal Application) Transmitter installed below Tapping Point This calculation used for open tank level measurement

Open Tank Level Measurement (Single Seal Application) Transmitter installed above Tapping Point This calculation used for open tank level measurement