64 AQUAMASTER4 | ELECTROMAGNETIC FLOWMETER TRANSMITTER | OI/FET400-EN REV. D
…15 Specification
Outputs
• Pulse/Alarm
• RS485 Modbus
• Sensus protocol
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
Automatic meter reading (AMR)
3-wire Sensus compatible
Logger
Logger function Flow and pressure Forward, reverse,
and net flow totals
No. of records 45871 3120
Logging interval * 15 seconds
30 seconds
1 minute
5 minutes
15 minutes
(selectable)
24 hours (fixed)
Logger capacity 31 days @ 1 minute
477 days @ 15 minutes
8 years
* 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
Response time (programmable)
>0.1 second (mains-powered)
15 seconds (battery-powered + external renewable energy)
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
Options
Compatible sensor styles
Reduced Octagonal Full Probe
bore bore bore
DN40 to DN40 to DN250 to 300 to
600 200 2400 1000 mm
External pressure transducer (option)
10, 20 and 40 bar absolute
Backward compatibility (option)
• Full compatibility with legacy AquaMaster remote
sensors. Plugs directly into AquaMaster 4 with no
specific configuration required.
MID/Tamper detection (option)
• Switch selectable inside the tamper-evident,
seal-protected enclosure
• Prevents changes to meter configuration that affect the
meter/output accuracy
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