66 AQUAMASTER4 | ELECTROMAGNETIC FLOWMETER TRANSMITTER | OI/FET400-EN REV. D
…15 Specification
Outputs
• Pulse/Alarm
• RS485 Modbus
• Mobile communications ( 4G fall back to 3G / NB - IoT)
Pulse outputs (option)
• Output 1: forward pulses
• Output 2: reverse pulses
• +35 V @ 20 mA solid state, unipolar
• Isolated with one common, shared with alarm output
Max ±50 V to earth
• 50 Hz max., programable pulse width, default 2 ms *
* Increasing pulse width beyond 2 ms at frequencies greater than 10 Hz
reduces battery life
Modbus interface (option)
• Modbus RTU over 2-wire EIA-485
• Supported baud rates: 9600 and 19200
• Max. devices on bus segment: 32
• Max. response time, 1 registered read: 60 ms
• Max. response time, 1 registered write: 600 ms
Alarm outputs (option)
• Indicates any problem with measurement, power supply
or flowrate alarm
• Bi-directional, solid state
• +35 V @ 50 mA
• Isolated with one common, shared with pulse outputs
Mobile communications – 4G/3G
• 4G LTE Cat1 with fall back to 3G (HSPA / HSPA+)
• Data exchange via FTPS protocol
• Data exchange format configurable to CSV/Json
• Data exchange interval 1 hour, 6 hours, 12 hours or 24
hours configurable
Mobile communications – NB – IoT
• NB – IoT over China Telecom
• Data exchange via LwM2M DTLS
• Data exchange format Json (JavaScript Object Notation)
for China Telecom
• Data exchange interval 1 hour, 6 hours, 12 hours or 24
hours configurable
Logger
Logger function Flow, pressure, forward, reverse, and net flow totals
No. of records 8832
Logging interval * 15 seconds
30 seconds
1 minute
5 minutes
15 minutes
(selectable)
Logger capacity 6 days @ 1 minute
90 days @ 15 minutes
* Based on a default 15 second measurement rate when operating on
battery or renewable power
Retrieval of logger data file via smartphone/tablet –
see Operation on page 50.
Logger data file format
• .csv for easy import into databases/spreadsheets
• Time-stamped records with flow, pressure and totalizers
in user-configured units of measurement
Audit logger
• Time-stamped records for all events, such as
configuration changes, diagnostics, regular alarms, and
critical alarms (firmware update, change of totalizer,
rollover of totalizer, reset of totalizer).
• Stored as standard (3000 records) and critical (1000
records) events in separate database.
• Available as .csv for easy import into databases/
spreadsheets.
Response time (programmable)
>0.1 second (mains-powered)
15 seconds (battery-powered + external renewable energy)
Report types in mobile communications
• Summary report with totalizer (fwd., reverse and net),
flow rate, alarm status (OK/Not OK), signal quality, and
battery life
• Detail report with totalizer (fwd., reverse, and net), flow
rate, pressure log, alarm status (OK/Not OK) signal
quality, battery life, diagnostic alarm report
• Diagnostic alarm report
Remote requests through mobile communications
• Summary report, detail report, and audit log report
• Firmware update
• Configuration changes
Environmental and operating conditions
Ingress rating
IP68 (NEMA 6P), <2m (6 ft.)
Submerged
9 months accrued time
Humidity
0 to 100 %
Temperature ranges
Storage: –20 to 60 °C (–4 to 140 °F)
Ambient: –25 to 60 °C (–13 to 140 °F)
Environmental classification
O, M1 and E2
Transmitter vibration
IEC 60068-2-6 (2007)
Vibration level 2g
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