Itron Inc. 51ESS Internal Photos
3
iCon™ Meter / Itron 51ESS ERT
®
Itron’s 51ESS ERT module is integrated into the iCon electronic residential Form 2S meter and arrives
from the factory ready for installation. The 51ESS ERT requires NO programming.
from the factory ready for installation. The 51ESS ERT requires NO programming.
How does the 51ESS ERT work?
Itron has provided integrated technology, the 51ESS ERT, that provides the same functionality of existing
ERT models 41ER-1 and 45ER-1 but now in the iCon electronic meter. The 51ESS ERT employs self-
initiated RF transmission technology for transmitting the Standard Consumption Message (SCM) and the
Interval Data Message (IDM). No “wake-up” tone is required. The ERT consumption register reading is
retrieved from the meter register. The iCon meter and the integrated 51ESS ERT are both pre-
programmed at the factory and are ready for installation. The meter serial number and the ERT serial
number will be included in the test data provided by Invensys Metering Systems and shown on the meter
inner cover.
ERT models 41ER-1 and 45ER-1 but now in the iCon electronic meter. The 51ESS ERT employs self-
initiated RF transmission technology for transmitting the Standard Consumption Message (SCM) and the
Interval Data Message (IDM). No “wake-up” tone is required. The ERT consumption register reading is
retrieved from the meter register. The iCon meter and the integrated 51ESS ERT are both pre-
programmed at the factory and are ready for installation. The meter serial number and the ERT serial
number will be included in the test data provided by Invensys Metering Systems and shown on the meter
inner cover.
How can I replace my 51ESS ERT module?
Refer to the section “Replacing the Register Display Board” in the Technical Manual for a detailed
procedure for replacing the iCon meter display board. The iCon meter retains a copy of the kWh reading
in non-volatile memory (NOVRAM) so changing the display/ERT board will not destroy your register
reading. After successful replacement of the display/ERT board and power up, the kWh reading will be
retrieved from NOVRAM and displayed. The ERT consumption register will then be updated with the
register read from the meter display.
procedure for replacing the iCon meter display board. The iCon meter retains a copy of the kWh reading
in non-volatile memory (NOVRAM) so changing the display/ERT board will not destroy your register
reading. After successful replacement of the display/ERT board and power up, the kWh reading will be
retrieved from NOVRAM and displayed. The ERT consumption register will then be updated with the
register read from the meter display.
To obtain a replacement display board, contact Invensys Customer Service at 800-375-8875. A
replacement ERT ID label will accompany each replacement display board to assist in records
maintenance. This ERT ID label is to be installed over the existing ERT ID label on the meter inner cover.
replacement ERT ID label will accompany each replacement display board to assist in records
maintenance. This ERT ID label is to be installed over the existing ERT ID label on the meter inner cover.
H o s t
M a i n f r a m e
iCon Meter with
51ESS ERT
51ESS ERT
Head End System
* PremierPlus2
* PremierPlus4
* PremierPlus4
* MV-RS
* Integrator
* Integrator
51ESS ERT ID
SCM - ERT ID & Data
Fixed Network
OMR
MAMR
MicroNetwork
Host Upload File
Host Download File
IDM – ERT ID & Data
IDM – ERT ID & Data
SCM - ERT ID & Data