Estink Pressure Transducer, Stainless Steel DC 5V Pressure Transducer Sender Sensor for Oil Fuel Gas Water Air Pressure, 1/8" NPT Thread Type, 100PSI

I use these alot when doing standalone engine harness cause there way cheaper. They read and work perfectly on the efi kits I use from Holley, Fast, MSD, FiTech and a couple others. I've had maybe 2 or 3 that read 3 to 5psi difference when checking with mechanical guages during setup. But its easily correctable in the tuning software. For the price of these you can buy a few and still have money leftover compared to the name branded ones.

No leaks or issues with the wiring harness, but I tested this against an analog gauge I know to be accurate, and it was VERY low. 0 psi shows 0 volts (should be 0.5) and 50psi shows 1.85 volts (should be 2.5). I also confirmed my source voltage is correct (5 volts) so the problem is the sensor.

100 psi transducer, installed and calibrated. works! pressure is indicated accurately until temperature of fuel warms up. pressure indication drops over 30 psi as temperatures changes by 100 degrees. this sensor cannot provide useable data in an environment that has temperature swings.

Worked good for 6 weeks, now there is no output. Dead

Holding up for 3 months as fuel pressure on a holley system. I used low-dollar calibration specs and it's very close to the mechanical gaugeCan't say how long it'll last but will definitely be a cheap back-up

I bought 7 of theses sensors (100PSI) to monitor our water well / filters / softener in february. The stainless steel case seems of good quality along the wire connector but once the system was up and running in march, I found out that only 1 sensor was working properly :3 sensors output a signal for a few seconds then go to V+ (5V)2 sensors output 200-300mv on the output pins1 sensor work part time with random readings1 sensor seems to work ok.I tested the sensors with a voltmeter and confirmed that they receive a clean 5V but their output is not within the scale (0.5-4.5) except the sensor that work. Replacing the sensors wil be a pain because I need to cut & drain the pipes.Would not recommend to buy theses.

Happy with the sensor so far. Seems accurate, well built.

I received a defective unit… was off by 15 LB’s when checked against two separate mechanical gauges. Doesn’t mean they are all bad. I sent it back for a refund.

Overall the transmitter seems quite accurate and linear. I believe the real scale is 0.5 to 4.5 volts - at least that's how I scaled it to make it work for my purposes.

The sensor is pretty accurate at room temp I use it for fuel pressure but when the under hood temp or fuel temp goes up the pressure it shows goes down compared to a mechanical or high quality sensor.