I have a flow meter with 4-20 mA current loop outputs.
I’m trying to understand what type of interface I need. I’m looking at the 4-Channel 4-20 mA Current Loop Receiver 16-Bit ADS1115 I2C Mini Module.
I’m wondering if the interface or the device provides the voltage source? Is the module configurable to be the source or not?
Thanks - John
The ncd product you listed here does provide loop power.
I will recommend this one
This I2C 4-20mA Current Receiver Board is capable of reading 4-20mA, 0-40mA, 0-20mA input Signal from 4 remote sensors. It has on-board amplifier for signal conditioning. This Board uses an MCP3428 to read the amplified signal. The MCP3428...
How do I know if an interface provides the voltage source? I don’t see any documentation about that.
are you talking about the ncd board or the pressure sensor?
How do I know if the
ndc.io board provides or expects the voltage source. I’ll measure the voltage on the device (flow sensor) to see if it is providing a voltage source.
checkout the product bullet points
Onboard 16V Voltage Current Loop Supply
This mentions the voltage supply - but you suggested that this product did not have the voltage source. Also I think the customary voltage for this type of circuit is 24V, but this mentions 16V. Confused.