Post by Meter Repair on Aug 15, 2012 23:36:39 GMT -5
the T10 series doesnt have a direct coupled register, its magnetic coupled. this register is sealed, so it seems they still used the changegear technology in the mid 80s but wouldnt be able to be changed without tearing up the roll sealing around the glass.
we have some Hersey master meters in our system that use change gears on the main line, but my boss hasnt played with the gears in a long time. we are replacing all the old herseys with neptune Protectus fire service compounds, the old herseys suck, they give lots of free water.
interestingly enough, i just remembered, on the hersey turbine meters, they make different sealed registers that are geared for +1 +2 -1 -2 % so if the meter tests slow, you change the register to a different %, he has a bucket full of 3inch hersey turbine registers on his truck. the change gears arent visible on those registers, so i would assume that neptune prob made different % T10 registers in the style in the pic.