Search found 6 matches

by bandtank
Mon Jun 03, 2019 6:35 am
Forum: Electric Meters
Topic: Shorting CT outputs indefinitely
Replies: 3
Views: 747

Re: Shorting CT outputs indefinitely

Thanks for the response. How can you tell if the CTs have become damaged? Is there a test that can be performed? I have a lot of test equipment and the background to do it, but I'm not sure how to accurately assess the condition of a CT. For reference. I heard a buzz for approximately 3 seconds befo...
by bandtank
Mon May 27, 2019 3:22 pm
Forum: Electric Meters
Topic: Shorting CT outputs indefinitely
Replies: 3
Views: 747

Shorting CT outputs indefinitely

I may not need to measure the current in a handful of wires, but I would like to install CTs just in case because pulling the leads through the wall will not be feasible in the future. I read in the CT's instructions that the outputs can be shorted if the load needs to be energized while the CTs are...
by bandtank
Fri Mar 08, 2019 3:32 pm
Forum: Developers Sandbox - Meter Data
Topic: Send data without a Push
Replies: 1
Views: 1211

Send data without a Push

Is it possible to upload data to the cloud data repository/database without a Push? In other words, is the API read only or are there endpoints that allow writing data as well?
by bandtank
Fri Mar 08, 2019 10:51 am
Forum: Water Meters
Topic: Double triggering/clocking/pulsing
Replies: 1
Views: 1663

Double triggering/clocking/pulsing

Similar to this thread, I am seeing multiple pulses per rotation with regularity. I'm using a custom solution that I designed (I'm a seasoned EE if it helps) through a Raspberry Pi Model 3B+, which works well with other pulse meters and pulse generating devices. The physical connection is a direct c...
by bandtank
Fri Mar 08, 2019 10:27 am
Forum: Water Meters
Topic: Pinout of SPWM-075-HD
Replies: 1
Views: 338

Pinout of SPWM-075-HD

I have not been able to locate a pinout of the SPWM-075-HD meter in the datasheet, FAQ, or anywhere on this site. The electrical properties of each wire, even if they aren't used, should be available somewhere. Timing diagrams with setting times, maximum pulse rates, etc. would be helpful as well. I...
by bandtank
Fri Mar 08, 2019 9:56 am
Forum: Water Meters
Topic: Design a circuit "simulate" opening/closing a valve for a water tank
Replies: 1
Views: 6107

Re: Design a circuit "simulate" opening/closing a valve for a water tank

I realize this post is very old, but I thought I'd answer it in case someone else has a similar question. It's a common situation for filling tanks. You need to design a state machine to understand the logic before trying to implement a solution. It's very likely you will need to add more states and...