FUSCH 500 PSI Pressure Transducer Sensor with Connector Harness, 1/8"NPT Thread Stainless Steel Pressure Transmitter for Oil Fuel Water Air

The first one I received did not work. It output a voltage that floated around 100mV with or without any pressure. I hooked it up to a 5Vdc wall wart rated to 1A. At atmospheric pressure (not plumbed into a service line) the output was 112mV. It's supposed to be 500mV. Although I was not optimistic, but since I already bought the fittings required to connect it to a hose bib, I put domestic water pressure on it. As expected -- 100mV output. I can only assume the circuit inside (wheatstone bridge?) is just regulating the supply down to 100mV as opposed to actually measuring strain on a stainless diaphragm. I asked Amazon to send a replacement. If that works, there will be an edit below outlining what happened and I will adjust my rating accordingly. If there is nothing posted beyond this, I was 0-4-2. Edit: azn sent a replacement (next day!) and it works. If it works well in-situ, I'll come back and report. I raised my rating to reflect how well this one is working. I am running it on an esp8266 that has it's own voltage divider (100k/220k) onboard for 0-3.3v. I added another one with 47k/68k resistors to take 0-5v to 0-3v so I am running on the ADC ~100-1000 for 0-100 psig. I only need it to run for a year taking data, which I don't think is too much to ask. if it fails before that I will come back here and update. Otherwise, no news is good news. Edit - been working for 11 days so far... Averaging 1k readings and posting every 10min.

First thing when you tighten it it stops and only the sensor moves but threaded portion stops moving so you cannot tell if on tight or not! Also after installation the readings were all over the place fluctuated to over 100psi then down to 40 and so forth so basically useless and am past 30 day return window. I would try another brand

Time under constant pressure and heat etc. will tell, but out of this box so far this thing is amazingly accurate. I took about 25 measurements along the range on the bench and it's dead on. I only could go to 144psi but the best fit line for the 25 points estimates that 200psi should be at 4.53v. Pretty impressive. Lets hope it stays this way.

FUSCH 100 PSI Pressure Sensor Update 2025-09-15 Still very pleased, operating accurately to 0.10 PSI. See pic for current 37.2-psi on screen and gauge. Demand pressure changes about 15-times per day between 30psi and 60psi. FUSCH 100 PSI Pressure Sensor Update 2025-05-17 Three months in and the sensor is still working perfectly. It has been accurate to 1-Deciaml point with the gauge from 30.0 to 50.0. I have an IP camera on the gauge and Arduino display in the pump-house and they have not wavered at all. The live video is on the main IoT display on the house and the gauge is precisely following the sensor reports and controlling the pump on-off accurately. Love it so far. I bought another as a spare but doubt it will be used, but will report back here if needed. Original review: 2025-02-16 Using this with an IoT system monitoring our well water pump. The claimed output voltage rating is quite a way off, so I just set it to match the pressure gauge that I know is exact. The output is linear as I compared it at 20, 30, 40, 50, 60 and 70-PSI with the gauge, so I just added 7-PSI to the calculated result. The starting offset of 0.5vdc at 0-PSI was closer to 0.8vdc. It seems pretty stable and consistent over many daily 5-minute pump-cycles. I will report back if that changes. Previous sensors I have tried never mentioned "water" in their descriptions so they eventually rusted and became erratic. Hopefully this one is really rated for water. If there is no update above then it is still working well.

These are WAY cheaper than name brands like TE, Ashcroft, etc. Seem to be about as accurate. Have been using them outdoors in industrial application - winter and summer (Texas) and have no complaints. Could be a little better documentation, user diagrams, but that's not a big deal after the first one. Seem to be well made and the connector alone is worth the price.

I would like to say I did have an issue with my sensor and contacted the seller about it. The issue was that I expected the wiring to be Red - Power, Black - Ground, and Green - Data. Hooking it up like that made my sensor not work. I tested the pins of my harness with a multimeater and the black was Power, the red was ground, and green was still data. Follow the diagram of the sensor and not the picture of the plug for the pinout, and triple-check that the plug is wired correctly. I'm giving them 5 stars because their incredibly quick response and willingness to fix the issue with no hesitation! Not everything you buy in the world will work as expected. A company willing to fix the issue and help when things are not correct is way more to me than the inconvenience of replacing it or dealing with a company that makes you out to be the problem or denies the issue.

First one sent lasted 10 minutes and failed. Upon inspection oil was leaking in the connector around the pins. Sent back and got a replacement. Replacement lasted 5 mins before the same problem. Very bad product.

Si problemas con el vendedor entrego a tiempo Pero el producto no funcionó.por más de 1 minutos comenzó a fugar líquido por el conector electrico Se compraron dos piezas y las 2 presentaron la misma falla de fuga el producto es de 100 psi y comenzó a fugar a a 45 psi