ABB WaterMaster Instruction Manual page 43

Electromagnetic Flowmeter
WaterMaster
Sensor – Physical Specification
Non-wetted Parts
Flange material
Carbon steel
Housing material
Carbon steel (sizes DN40 to 200 [1
and DN700 to 2200 [28 to 84 NB])
Plastic (sizes DN250 to 600 [10 to 24 NB])
Terminal box material
Polycarbonate or aluminium
Cable gland material
Plastic or brass
Transmitter – Functional Specification
Power supply
Mains
Low voltage
DC
Supply voltage fluctuations within the specified range have no
effect on accuracy
Digital Outputs (3 off)
Rating 30 V @ 220 mA, open collector, galvanically isolated
Maximum output frequency 5250 Hz
1 off dedicated to Alarm/ Logic, programmable function
2 off configurable to either Pulse/Frequency or Alarm/Logic function
Current output
4 to 20 mA or 4 to 12/20 mA, galvanically isolated
Maximum loop resistance 750 Ω
HART protocol Version 5.7
Signal levels compliant with NAMUR NE 43 (3.8 to 20.5 mA)
Low alarm 3.6 mA, High alarm 21.8 mA
Additional accuracy
±0.1 % of reading
Temperature coefficient
Electrical connections
1
20 mm glands, / in NPT, 20 mm armored glands
2
Temperature limitations
Ambient temperature
Temperature coefficient
Environmental protection
Humidity: 0 to 100 %
Rating: IP67 (NEMA 4X) to 1m (3.3 ft) depth
IM/WM Issue 7
1
/ to 8 NB]
2
85 to 265 V AC @ <7 VA
24 V AC +10 %/–30 % @ <7 VA
24 V ±30 % @ <0.4 A
Typically <±20 ppm/°C
–20 to 60 °C (–4 to 140 °F)
Typically <±10 ppm/°C @ Vel ≥0.5 mls
6 Specification
41