Hi folks, The lady of the house asked me to measure the fluid level in some tanks at home: fuel oil, rain water, ... And she wants to know the partial filled volume of those tanks. Must admit that I already kept here waiting for quite some time, but it became a bit clear now that waiting time was…

These resistive float sensors are an option, they are fully sealed and made of stainless and range from 150mm to 1000mm depths. Depth Sensor (Sealed resistive) [image] They do require a bit of effort to get a linear range output, but worth the effort.

I bought the same in a webshop for the Raspberry tutorial for hc-sr04-ultrasonic-range-sensor-on-the-raspberry-pi . Now it is waiting for me to finish a project I'm working on, to use it in a hydroponic system I suspended the developing. I haven't used the ultra-sensor, yet. (I just tried it on the…

[image] Argus.Tuft: Available Volume ? Het Neil, Thanks for proposing an alternative name for "emtyVolume"! But when I look at my oil tank for my heating systel, the filled volume is for me the 'available volume´. Because that oil is 'available' for heating...

Yes Bart, you're quite right. The old glass half full or half empty conundrum. I'll rethink and try again. WTS Cheers

Hello, I have used differential pressure sensors such as the MPX 5010DP to measure liquid depth, for instance in an underground rainwater reservoir or water butts in the garden.

A little bit of topic ... I have of these TL-136 (0-1m) pressure sensors for my pond on my desk (they are available in different ranges). They are a bit pricy, but should work fine. [image] I tried to use the water proof ultra sonic sensors too but they have a minimum sensing distance around 0,4…

[image] BartButenaers: It would be nice if some folks could do some tests with this node. There are a lot of online tank calculators available, so you can easily compare the results... Thanks!!!! BTW you don't need to have sensors installed to be able to test my node. You can easily inject t…

If you're using ultrasonic to measure level in a tank, the sender really ought to be in the middle of the top not off to one side; and the tank shouldn't have internal baffles or horizontal ribs. This rules out most heating oil tanks! One way to mitigate is to mount the ultrasonic unit in a short …

[image] impvan: I found it'll even work around bends @impvan , Thanks for this usefull info! So I assume you could also use a bended pipe to estimate the length of an underground tank, if you are not sure about the dimensions...

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[ANNOUNCE] node-red-contrib-tank-volume: beta

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BartButenaers 20 February 2022 16:36 52

Hey @StrongTown,
Have a look here, and read the comments from others.
Bart

Topic		Replies	Views
[ANNOUNCE] node-red-contrib-tank-volume: version 1.1.0 Share Your Nodes	16	865	22 March 2025
Fuel Tank Level General	23	924	17 November 2022
Help with making a volume gui widget with no html knowledge Developing Nodes	25	1781	27 January 2021
Water Level Meter - SR04M-2 General	20	1981	17 January 2022
Using Node-Red with Water Level Monitoring from prior recipe General	23	7974	4 January 2021

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[ANNOUNCE] node-red-contrib-tank-volume: beta

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