How to simulate sensor signals?

[aju11]

I am working on a project that involves 26PC-series Honeywell pressure sensors (linked below) interfaced to Filtering, ADC and microcontroller.

https://www.mouser.in/datasheet/2/187/honeywell-sensing-26pc-series-miniature-low-pressu-1143546.pdf

The 1 psi part of the 26pc series has output voltage range of 0 V to 16 mV.

It is not practically possible to have a full setup (pumps, valves, pipes, sensors, etc) at the desk while software is being developed.

I want to have a quick and simple solution that could generate a 0 to 16mV DC signal and can be controlled by a pot to simulate the sensor.
May be like some opamp circuit

Can anyone help please?

[DaJMasta]

Provided your measuring circuit is pretty high impedance, you could just do it with a voltage divider and a supply rail.  Either a fixed divider and a variable supply, or a divider with a pot (probably on the low side so you can go to 0mV) and if you're feeling fancy maybe a small capacitor to stabilize it.

If output impedance of the sensor is a problem (your measurement system needs a bit of current), then something like a divider with an opamp follower through a suitable output resistor would do the job.

[David Hess]

Build or buy a bridge transducer simulator.

It would be easier to describe what is needed to build one if the schematic shown in the datasheet was not wrong; based on the numbers given, there is obviously a large modulus (series) resistor which is not shown.

In practice, a simple bridge will give the proper results however.  Use 4 precision resistors to make a bridge, about 7.5 kilohms) and then use resistors from one output to either supply to create various calibrated output levels.  No active devices are required.

I could not find any example schematics of a simulator online.  It might be considered too trivial.  Real simulators tend to be pretty expensive because of the precision requirements although that pressure sensor is not particularly demanding in this regard.