4-20 mA Sensor Board (Current Loop) for Arduino, Raspberry Pi and Intel Galileo
4-20 mA Sensor Board (Current Loop) for Arduino, Raspberry Pi and Intel Galileo

4-20 mA Sensor Board (Current Loop) for Arduino, Raspberry Pi and Intel Galileo

Cooking Hacks | A-000000-01537
This 4-20 mA current loop sensor board is an Arduino, Raspberry Pi and Intel Galileo compatible sensor capable of transmitting data to a receiver located up to 900 meters away by representing a physical quantity by an electric current.
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4-20 mA current loop shield board: a robust standard

The 4-20 mA analogue current loop shield board is one of the most reliable standards on the market and allows you to transmit information to a 4-20 mA current loop receiver, even if it’s located more than 500 metres away.

The advantage of the 88145 4-20 mA shield board is that it uses the current, and not the voltage, to represent a physical quantity on a defined scale.

The signal sent by the 4-20 mA current loop transmitter is therefore never affected by the voltage drops that occur throughout the line as the current passes through the different components installed on it.

The 4-20 mA current loop shield board is compatible with Arduino, Raspberry Pi and Intel Galileo to meet the needs of all users.

Uses of the 88145 4-20 mA Current Loop

Technically speaking, we use a current loop (usually 4-20 mA rather than 0-20 mA) to translate a given signal (barometric pressure, temperature, humidity, etc.) into electric power.

In this context, 4 mA represent level 0 in a given scale, and 20 mA its highest level. Physical quantities are hence transmitted as a scale percentage, e.g. a current of 12 mA would correspond to 50% of the given scale.

At the other end of the line, a 4-20 mA current loop receiver retranscribes this power as a voltage, which can then be processed by a computer or any other device and transmit the information to the user.

Technical specifications of the 4-20 mA Analogue Current Loop

  • Type: analogue
  • Media: twisted pair
  • Number of channels: 4
  • Distance: 900 m
  • Supply: 5–24 V
  • RoHS compliant

 

Resources for the 4-20 mA Sensor Board (Current Loop)

Check out this tutorial to get rapidly started with your 4-20 mA Sensor Board (Current Loop):

4-20 mA Sensor Board (Current Loop) tutorial

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