Hi, For my pellet stove I’d like to monitor my pellet consumption in real time. My idea is monitoring the time a feeder screw motor is operated to compute the quantity of pellet burned by the stove. Question : is it possible to count the amount of time a device is operated, wether using a CT or vo…

[image] pagaille: My idea is monitoring the time a feeder screw motor is operated to compute the quantity of pellet burned by the stove. Is the power to it hard wired or a plug?

Welcome to the OEM forum, Matthieu. Do you want the time to go into emonCMS (or similar?) I think it might be easier to count revolutions of the feed screw, because that will give you a direct measurement of the quantity - always assuming the pellets don’t run out. You can do that either with a c…

@borpin I can access the wires. The real deal I guess is wether the software is able to count the time the device is operated and how.

Thanks @Robert.Wall ! The feeder is driven by a small 230V AC motor (probably 100W or so). The motor is directly hooked to a speed reducer, there is no easily accessible moving asset. That’s why I wanted to measure the time it was operated. [image]

[image] Robert.Wall: Do you want the time to go into emonCMS (or similar?) I think it might be easier to count revolutions of the feed screw, because that will give you a direct measurement of the quantity - always assuming the pellets don’t run out. Since there is a speed reducer behind the …

[image] pagaille: The real deal I guess is wether the software is able to count the time the device is operated and how. Sounds like an ideal candidate for the emonCMS Input on-time function.

[image] Bill.Thomson: Sounds like an ideal candidate for the emonCMS Input on-time function. That’s probably what I was looking for ! I can’t find any documentation mentioning “input on-time”, could give me some pointers to it ? Txs !!

[image] pagaille: could give me some pointers to it ? I wish I could. But I’ve never actually used it. (just know that it exists in the emonCMS “Input” pull-down menu)

[image] pagaille: I wanted to measure the time it was operated. I’d forgotten about on-time. My thinking was: the quantity is proportional to time if the speed is constant. OK, it should be. But also, if the calorific value of your pellets is constant, then the amount of heat you get is direc…

This might be of some help: [image] Gas total to consumption per hour Emoncms I use emoncms now already for several years and recently got gas meter reading working. The only problem is that I can read just the absolute gas usage (current gas meter reading since the meter…

Counting operating time

Getting Started

Bill.Thomson (Bill Thomson) 20 April 2020 16:26 11

This might be of some help: