what's the black device attach on the meter

Status
Not open for further replies.
kylelee

kylelee

Member
Location
多伦多
dc7783a315b0262af1e58c57e15a581c.jpg

What is that thing? And what's the purpose for? And why some meter has it? Why some without it ?


从我的 iPhone 发送，使用 Tapatalk
 
ptonsparky said:
Tamper device. Some body must be late on paying their bill or that unit is unoccupied at the moment. Makes it more difficult to remove the insulating sleeves on the meter and reinsert for power.
Click to expand...

It looks like the meter could still be removed from the socket. It looks to me, cut the meter seal, unscrew the bolt that holds the ring, remove the ring, and pull the meter. Every anti tamper locking mechanism I have seen prevents the removal of the ring.

It is an odd looking thing though. Have you seen one installed on a meter before?
 
I have never seen anything like this but there appears to be some sort of adapter between the meter and meter socket. Maybe it's a utility installed TVSS device.

It certainly is interesting to look at.
 
It measures the power through the meter. It can detect the optical pulses on a digital meter or detect the black stripe as it rolls past on an electromechanical meter.
 
ptonsparky said:
Tamper device. Some body must be late on paying their bill or that unit is unoccupied at the moment. Makes it more difficult to remove the insulating sleeves on the meter and reinsert for power.
Click to expand...

But I think this unit is occupied and looks it doesn't prevent me from removing the meter


从我的 iPhone 发送，使用 Tapatalk
 
kylelee said:
But I think this unit is occupied and looks it doesn't prevent me from removing the meter


从我的 iPhone 发送，使用 Tapatalk
Click to expand...
The utility would cut the device loose. Might not be allowed in the first place.
 
mivey said:
See here:

https://www.bluelineinnovations.com/features#how-it-works
Click to expand...
Bingo!

That little arm coming off and going over the meter must be looking at the LED on the front of the meter that is connected to the KYZ pulse and is basically an external totalizer tied to (probably) a Bluetooth transmitter going to their personal meter inside.

On my system from PG&E, I can get an app for my phone that gives me the same info right off of their system.
 
Jamesco said:
It looks like the meter could still be removed from the socket. It looks to me, cut the meter seal, unscrew the bolt that holds the ring, remove the ring, and pull the meter. Every anti tamper locking mechanism I have seen prevents the removal of the ring.

It is an odd looking thing though. Have you seen one installed on a meter before?
Click to expand...
Good luck cutting that ring. I don't know what they're made out of, but they don't just cut off.
 
cowboyjwc said:
Good luck cutting that ring. I don't know what they're made out of, but they don't just cut off.
Click to expand...

In another galaxy far far away I had a roommate who (after I had moved elsewhere) discovered that he could pull the meter, turn it over, and restab it upside down to make it run backwards. He got caught when he forgot to turn it back over before the meter reader came by. I don't know what the consequences were but they must not have been too severe because a few years later he became a police officer.
 
I find it difficult to believe that a flipped meter runs backwards. Logic tells me that the current travels through the meter the same either way.
 
LarryFine said:
I find it difficult to believe that a flipped meter runs backwards. Logic tells me that the current travels through the meter the same either way.
Click to expand...

But since the meter measures power by integrating the instantaneous product of voltage and current, the phase relationship between the voltage and the current flips 180 degrees.
OTOH meters were quite early equipped with a single or dual ratchet mechanism that prevented reverse movement or rotated the dials in the same direction regardless of the disk movement direction.
 
Status
Not open for further replies.
Top