What kind of sensor is this?

童心老叟

What kind of sensor is this? [Copy link]

 

I am repairing a ventilator. There is a component on the PCB that I don't recognize. There is no mark on it. There are two nozzle interfaces on the top and four pins on the bottom. The board is marked as +SIG, GND, -SIG, and Ve. The other two pins have no line connection. Is this a flow or pressure sensor? Does anyone know? Please provide information, thank you!

littleshrimp

Look at the two holes for ventilation. It is unlikely to be a differential pressure sensor.

btty038

I haven't used it. I've really never used it.

chunyang

This is a differential pressure sensor. The four pins are power supply, ground and a pair of differential signal outputs.

童心老叟

chunyang posted on 2019-1-12 23:45 This is a differential pressure sensor, the four pins are power supply, ground and a pair of differential signal output.

Good morning, Laba! Thanks for your reply! Can you find its information? Anything similar will do, let's learn more about it.

童心老叟

Remove the two screws and lift up the module. The original logo is underneath.

天天1

Check out Honeywell's official website

eric_bestmyself

It is a Honeywell pressure sensor, which is very common on ventilators.

chunyang

Posted by Tongxin Laosou on 2019-1-13 09:12 Good morning Laba! Thank you for your reply! Can you find its information? Anything similar will do, let's learn more.

https://wenku.baidu.com/view/d5823f5ceefdc8d377ee3215.html

chunyang

Posted by Tongxin Laosou on 2019-1-13 09:12 Good morning, Laba! Thank you for your reply! Can you find its information? Anything similar will do, let's learn more about it.

The reply has external links that need to be reviewed, and it can be easily found by searching on the Internet.

童心老叟

chunyang posted on 2019-1-13 19:54 Reply There are external links that need to be reviewed. You can easily find them by searching on the Internet.

Good morning! Found it. Thank you

童心老叟

eric_bestmyself posted on 2019-1-13 13:30 This is a Honeywell pressure sensor, which is very common on ventilators.

This is a pressure sensor, Honeywell's scx01dnc

童心老叟

eric_bestmyself posted on 2019-1-13 13:30 This is a Honeywell pressure sensor, which is very common on ventilators.

This sensor has two airway ports A and B. Is there a difference between these two ports? Are they also divided into input and output?

eric_bestmyself

Tongxinlaosou published on 2019-1-23 14:20 This sensor has two gas pipe ports A and B. Is there a difference between these two pipe ports? Are they also divided into input and output?

My impression is that one port is used as input and the other port is used as output