This document analyzes the differences between a standard transmitter and a smart transmitter that absorbs pressure, a different pressure transmitter, and an estimated temperature.

smart transmitter

Standard transmitter

  1. Conventional transmitters that offer 4-20 mA signal output in a two-wire connection, corresponding to 0-100% of the rated frequency range, have limited adjustment for various compression ranges.
  2. Performance varies in parameters such as temperature changes, duration, and static pressure variations.
  3. A restructuring schedule is required to maintain acceptable performance.
  4. This remodeling process is time-consuming and difficult to perform in an open, high-risk environment.

Smart transmitter

  1. Smart transmitters can replace conventional transmitters and are connected by standard 4-20 mA dual wires but with additional digital communication power from a hand-held optical connector (SFC) connected wherever 4-20 mA is available.
  2. Smart transmitters are capable of working with a wide variety of thermocouple components, as well as RTD.
  3. Smart transmitters allow remote adjustment of the transmission data.
  4. For smart senders who get diagnostic details to reduce loop rest time.
  5. The importance of the concept of transmission concept provides the most advanced functionality and versatility.
    Digital electronics has enabled quantum push forward in performance and benefits.



Significant improvements in smart transmitter accuracy, static pressure effects, temperature performance, and time stability provide a complete improvement in performance.


The power switch is increased to 400: 1 with a smart transmitter against a standard transmitter from 6: 1

The most noticeable variation helps to

  1. Reduce the cost of backup management,
  2. Increase the transfer of transmission equipment through crop rotation, too
  3. It offers other benefits such as the freedom to define the distances directly when ordering units.
    A clear example of real savings with increasing variability is in applications where two or more standard units are used on a single orifice plate to improve the accuracy of various flows.

The difference in durability of intelligent transmission means that only one unit is required, thus only the other units and the cost of installing and maintaining them can be maintained and also prevent the low reliability that occurs in two or three loops against each other. In the case of a smart transmitter, the range can be changed manually using the speaker for various plant operating conditions.

Remote control adjustment

The range of the smart transmitter, water drain, etc., can now be adjusted from 1500 m away by contact over the 4-20 mA signal line. Adjustments can be made by connecting a smart field communicator (SFC) to all two signal lines at any location in their path.

  1. The output can be seen as a straight or square root
  2. The reduction time can be changed in several steps
  3. LRV / URV can be adjusted to any value in the pressure range.
    Adjustments are made to any engineering units that can be selected in PSI, m bar, bar, k Pa.

Redesigning the smart transmitter without applying pressure is possible. Measurement corrections can be made with minor errors caused by ascending angle effects. Zero testing, and adjustments if necessary, can be done from the control room where the plants are closed or during regular maintenance. Remote diagnoses and remote control can now be performed back in the control room, thus taking a fraction of the previous maintenance period that usually requires two men several hours to do any field testing or switch.

All of the above can be done by one man from easily in the middle.


The main purpose of intelligent transfer is built on reliable and stable work as a prerequisite. Few materials are used, and protection is provided against harmful influences, such as reverse polarity, over-pressure, and high voltage.

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