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Is it possible to use 4-20mA self powered sensors using current receivers ? If not then what will be the best way to use these sensors and interface it Particle Photon to monitor the readings?

Note:- 4-20mA current receiver is new device and easy to use with IOT device and I am giving try with particle

Experienced suggestions on this will be helpful.

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  • \$\begingroup\$ Can you please provide links and more description to what devices you are talking about? \$\endgroup\$ – loudnoises May 2 '18 at 12:16
  • \$\begingroup\$ Without more data from you: IF the sensor accepts a voltage, uses some of the voltage to power itself and then modulates the currentto 4-20 mA to return signal, then eg placing a resistor from negative return to ground will provide a voltage across the resistor proportional to current. Who needs a receiver ? :-). Placing a type unspecified link not provided easy to use if you have the spec sheet receiver where the resistor is probably works. \$\endgroup\$ – Russell McMahon May 3 '18 at 0:43
  • \$\begingroup\$ Garglabet maybe relevant search \$\endgroup\$ – Russell McMahon May 3 '18 at 0:43
  • \$\begingroup\$ Many of these may be relevant, This provides a good tutorial. \$\endgroup\$ – Russell McMahon May 3 '18 at 0:46
  • \$\begingroup\$ I am using (pressure sensor)[industrybuying.com/… which Is connected to 24v DC supply placing a 1.2K resistor across the output will this type connection will be okay to get it interface with IoT device or there will be some problem in it ? I am looking for module which will easily connect the sensor with particle photon \$\endgroup\$ – Jordan May 3 '18 at 7:47
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Please provide links to equipment used.

Excellent tutorial here.
Images below are from the above web page.

For a sensor powered by the loop current / voltage: If the sensor accepts a voltage, uses some of the voltage to power itself and then modulates the current to 4-20 mA to return signal, then eg placing a resistor from negative return to ground will provide a voltage across the resistor proportional to current. Who needs a receiver ? :-).

enter image description here

If the sensor has its own power supply then placing a resistor across the output will provide a voltage proportional to current. Who needs a receiver ? :-).

enter image description here

In both cases a receiver in place of the resistor should provide a useful signal.

Many of these may be relevant, This provides a good tutorial.

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