Difference between revisions of "4-20mA Sensor Brick"

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[[File:IM140819001_4.jpg|400px|thumb|right]]
 
[[File:IM140819001_4.jpg|400px|thumb|right]]
 
4~20mA Sensor Brick is an electronic brick module that can be used to test electronic current loop from 4mA to 20mA and support type2,3,4 current output. With a 5V to 24V DC-DC power boost convertor, its max current output can be 150mA, which can be for equipment use.
 
4~20mA Sensor Brick is an electronic brick module that can be used to test electronic current loop from 4mA to 20mA and support type2,3,4 current output. With a 5V to 24V DC-DC power boost convertor, its max current output can be 150mA, which can be for equipment use.
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Go shopping [http://imall.iteadstudio.com/im140819001.html 4-20mA Sensor Brick(IM140819001)]
  
 
==Features==
 
==Features==
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==Loop current type==
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*'''Type 2 loop current'''
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[[File:type 2 loop current.jpg|400px]]
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*'''Type 3 loop current'''
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[[File:type 3 loop current.jpg|400px]]
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*'''Type 4 loop current'''
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[[File:type 4 loop current.jpg|400px]]
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==The relationship between output voltage and input current in channel 1,2==
 
==The relationship between output voltage and input current in channel 1,2==
Output voltage V= 100 * I * 2
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In theory, their relationship can be described into this formula:
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Vout1 = R1 * Iin1 * 2
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Vout2 = R2 * Iin2 * 2
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R1=R2=100ohm
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Note: error ±2% in practical test.
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==Instruction==
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*1. Upload the demo [[:File:4_20mA_demo.zip]] into Iteaduino UNO
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*2. Connect the sensor brick and UNO as following picture. S1->A4 and S2->A5.
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::[[File:IM140819001in1.jpg|500px]]
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*3. Measure current loop
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::When access in type2,3 loop current, please connect JP1 or JP2, both 1In- and 2In- is equal to connecting ground, 1In+ and 2In+ are connected with the current pins to be measured.
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::When access in type4 loop current, connect the input end to 1In+ or 2In+, the output end to 1In- or 2In-, and unplug JP1 or JP2 simultaneously.
  
==Installation==
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==Download==
*1.When access in type2,3 electronic current loop, please connect the jumper of JP1 or JP2, both 1In- and 2In- is equal to connecting ground, 1In+ and 2In+ are connected with the current pins to be measured.
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*Schematic--[[:File:IM140819001-4~20mA Sensor Brick-schematic.pdf]]
*2.When access in type4 current loop, connect the input end to 1In+ or 2In+, the output end to 1In- or 2In-, and plug out the jumper of JP1 or JP2 simultaneously.
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Latest revision as of 01:45, 31 January 2015

Overview

IM140819001 4.jpg

4~20mA Sensor Brick is an electronic brick module that can be used to test electronic current loop from 4mA to 20mA and support type2,3,4 current output. With a 5V to 24V DC-DC power boost convertor, its max current output can be 150mA, which can be for equipment use.

Go shopping 4-20mA Sensor Brick(IM140819001)

Features

  • Compatible with the mainstream 2.54 and 4-pin Grove interface in market
  • Compatible with type2,3,4 electronic current loop
  • With use of M4 standard fixed holes, compatible with M4-standard kits such as Lego and Makeblock.

Specification

PCB size 40.6mm X 29mm X 1.6mm
Power supply 5V DC
Compatible interfaces 2.54 4-pin interface and 4-pin Grove interface(1)

Electronic Characteristics

Parameter Min. Typical Max. Unit
Power supply 4.5 5 5.5 VDC
Input measurement current 4 - 20 mA
Output Current(DCDC) - - 150 mA

Hardware

IM140819001pic1.jpg IM140819001pic2.jpg IM140819001pic3.jpg

JP1 JP2
Connected CH1 Type 2/3 CH2 Type 2/3
Disconnected CH1 Type4 CH2 Type4

Loop current type

  • Type 2 loop current

Type 2 loop current.jpg

  • Type 3 loop current

Type 3 loop current.jpg

  • Type 4 loop current

Type 4 loop current.jpg

The relationship between output voltage and input current in channel 1,2

In theory, their relationship can be described into this formula:

Vout1 = R1 * Iin1 * 2

Vout2 = R2 * Iin2 * 2

R1=R2=100ohm

Note: error ±2% in practical test.

Instruction

  • 1. Upload the demo File:4_20mA_demo.zip into Iteaduino UNO
  • 2. Connect the sensor brick and UNO as following picture. S1->A4 and S2->A5.
IM140819001in1.jpg
  • 3. Measure current loop
When access in type2,3 loop current, please connect JP1 or JP2, both 1In- and 2In- is equal to connecting ground, 1In+ and 2In+ are connected with the current pins to be measured.
When access in type4 loop current, connect the input end to 1In+ or 2In+, the output end to 1In- or 2In-, and unplug JP1 or JP2 simultaneously.

Download