## 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

## Smart Transmitter Calibration Tutorial Part 1

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

## Smart Transmitter Calibration Tutorial Part 2

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

## Smart Transmitter Calibration Tutorial Part 3

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

## Zero Elevation and Zero Suppression in Level Measurement

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

## Formulas to calculate mA from PV, LRV and URV

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

## Level Measurement with Dry leg and Installed Below Tapping Point

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

## Level Measurement with Wet leg and Installed Below Tapping Point

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

## Differential Pressure (DP) Level transmitter Installed Below Tapping Point

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

## Differential Pressure (DP) Level transmitter Installed Above Tapping Point

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