Using excitation voltage from DEWE-43a for Honeywell pressure sensor that uses only 3.3V?

Hello,

In my research lab, we recently bought a Honeywell ABP2DRRT001PDAA3XX (https://cz.mouser.com/ProductDetail/Honeywell/ABP2DRRT001PDAA3XX?qs=ljCeji4nMDmtNzy%252B%2Fo3xmg%3D%3D - I am attaching the manual) that requires 3.3V (min. 3V, max. 3.6V) DC for power supply. Looking at the DEWE-43a manual and several answers on this forum, I see that its excitation voltage is fixed at +/- 5V, which is too much for our Honeywell sensor. I was wondering if this was always true? And, if there actually is a way to change the excitation voltage of the DEWE-43a, could you please provide it to me?

I have been thinking of using resistors to reduce this excitation voltage to 3.3V, do you think that would be a viable solution?

Thank you in advance for your assistance.

Hugo

Dear Hugo,

as you already figured out the excitation on DEWE-43 is fixed and cannot be changed. There is no other way to lower the voltage without an external circuit.

You can use the mentioned solution with resistors or use a 3.3V voltage regulator. For example https://eu.mouser.com/ProductDetail/STMicroelectronics/L78L33ABZ-AP?qs=7IaIRco65plqHZGvVBuyKw%3D%3D

Just be sure to choose the correct one that will withstand the current required for the sensor.

Best Regards,

Rok

Dear Rok,

Thank you very much for your fast response, very much appreciated! I will definitely look up voltage regulators and try to find one we could use in our setup. Thank you for the help, have a great day.

Best regards,

Hugo