Hi, sorry for the late reply. It appears that AMPY are now Landis + Gyr. The strange thing is that all the references to your meter model show it as being a single rate meter. Now AMPY when they were going may have modified the Landis + Gyr machine but who knows. I think I would be very tempted to get it checked but as is the way of things nowadays they will probably charge you for the privilege. Best I can come up with for the moment I'm afraid.