METER OPERATIONS
Display
E-Series Ultrasonic Plus meters use a nine-digit
Liquid Crystal Display (LCD) to show consumption,
flow rate and alarm information.
Status Indicators
Indicators and alarms illuminate when the
condition is active, and dim when the condition
is eliminated.
Lines Indicating Black/White
Number Wheels
Indicators/Alarms
Unit of Measure
Flow Rate
Figure 29: E-Series Ultrasonic Plus Meter LCD
All E-Series Ultrasonic Plus meters are delivered in Storage mode so that a meter alarm is not triggered. During Storage mode,
the empty pipe shows on the LCD as an error message, but it will not trigger a meter alarm. The meter needs to sense a full
pipe for 24 hours for the meter to go from Storage mode to normal operation. If installed when the meter is still in Storage
mode, the meter will function as expected with the addition of also displaying “err” on the flow rate screen. The meter displays
consumption and, if connected to an ORION Cellular LTE-M or LTE-MS endpoint, sends a reading to the endpoint. When the
meter is in normal operation, the meter alarm displays immediately upon detecting the empty pipe condition. The alarm
clears immediately after the condition is corrected and the pipe is full. Systems that support the additional alarm conditions
will be notified that an empty pipe condition has occurred.
The chart below describes meter conditions that may be triggered and communicated when connected to an ORION Cellular
LTE-M or LTE-MS endpoint.
Meter Status
Indicator
Icon Description
Meter
functioning
correctly
Meter operating correctly.
Meter alarm
Meter alarm and consumption data are sent to the endpoint. Several potential conditions may
exist, including:
• Empty pipe: “err” displays on LCD. Last known good read is displayed. Alarm clears when
pipe is filled.
• Temperature limits exceeded: meter continues to operate but outside specified accuracy
range. Alarm clears after 60 days unless alarm condition continues.
• Maximum flow rate is exceeded. No consumption is displayed until back within specified
flow range. Both the meter functioning correctly and the meter alarm are active. Alarms
clear after 60 days unless alarm condition continues.
• Other meter or sensor issue: interference of ultrasonic signal. Meter continues to operate
unless sensors are damaged. Alarm clears after 60 days unless alarm condition continues.
Reverse flow
The meter detects reverse flow, triggers the reverse flow alarm icon on the E-Series display
and sends alarm message to the endpoint. The alarm remains active for 60 days. The alarm
automatically clears after 60 days if the condition has not recurred.
Suspected leak
Meter detects 24 hours without one 15-minute interval of no ow and sends alarm message to
the endpoint. The alarm clears automatically when a 15-minute no-ow interval occurs.
30 day no usage
No measured flow in past 30 days. Meter detects 30 day no usage and sends alarm to the
endpoint. The alarm automatically clears once flow occurs.
End of life
battery indicator
Indicated battery life based on pre-calculated consumption. Alarm is activated after 19 years
and does not clear. Meter sends alarm message to the endpoint.
Meter Operations
Page 20 August 2020ESM-UM-02156-EN-02
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