5 Critical Criteria You Should Know for Choosing the Right Transmitter

Amazeng Technical Team
5 min read
Transmitter SelectionIndustrial AutomationSensorPrecisionSignal Type

Introduction

The success of an automation system depends on how accurately it reads the physical magnitude (pressure, temperature, load, etc.) in the field. Transmitter selection is at the heart of this reading process. Wrong selection leads to incorrect data, system downtimes, and cost increases. Here are 5 critical criteria you should know to choose the right transmitter.

1. Measurement Range and Resolution

The capacity of the transmitter should be slightly above the maximum value you want to measure. However, as the capacity increases, sensitivity at low values may decrease.

  • Critical Tip: Resolution is the smallest change the device can detect. High-quality digital transmitters (24-bit) offer millimeter precision even in wide measurement ranges.

2. Output Signal Type

You must determine the most suitable signal type for your system:

  • Analog (4-20mA / 0-10V): Suitable for classic PLC systems but can be affected by noise.
  • Digital (Modbus RTU/TCP): Prevents data loss, recognizes no distance limits, and carries more information (diagnostic data).

3. Operating Environment Conditions

The environment in which the transmitter will operate determines its durability.

  • Protection Class: IP65/IP67 protection is required for dusty or humid environments.
  • Temperature Range: Products with low drift (ppm/°C) values should be preferred so that changes in factory internal temperature do not affect the accuracy of the device.

4. Filtering and Response Time

Vibrations in the field (motors, mechanical parts) cause fluctuations in measurement.

  • Adaptive Filters: Smart transmitters must have digital filters that clean noise without distorting the truth.

5. Calibration Ease

Adjusting under field conditions can be difficult. It is a big advantage that "Zero" and "Gain" adjustments can be made without the need for a computer.

Solution: Amazeng GDT and ZMA Series

Are you having trouble choosing? As Amazeng, we offer a solution for every need:

  • Fast and Compact Jobs: GDT Digital Transmitter offers a plug-and-play solution with its on-screen display and Modbus support.
  • Multi-Channel and Precise Data Collection: ZMA Data Acquisition is designed for the most demanding test and measurement processes with its 24-bit resolution and 1kHz speed.

Conclusion

The right transmitter is the eye of your system. Determining your criteria correctly lowers your maintenance costs and increases your production quality in the long run.

Not sure which product is more suitable for your application? Try our product selection wizard or get ideas from our technical team.

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