ABB WaterMaster - Page 9

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WATERMASTER ELECTROMAGNETIC FLOWMETER | DS/WM-EN REV. Y
Specification – Sensor
Functional specification
Temperature limitations
Ambient temperature
Remote transmitter –20 to 70 °C (–4 to 158 °F)
Integral transmitter –20 to 60 °C (–4 to 140 °F)
Process temperature See table below.
0.1 to 50 °C (32.2 to 122 °F)
OIML R49 T50 Approved
Medium temperature °C (°F)
Code Lining Flange material Minimum Maximum
FEF, FEW3 Hard rubber Carbon steel  
Stainless steel  
FEW1 PTFE Carbon steel  
Stainless steel  
FEW3 PTFE Carbon steel  
Stainless steel  
FEW3 Elastomer Carbon steel  
Stainless steel  
FEF, FER Elastomer Carbon steel  
FEV Polypropylene  
Pressure limitations
As flange rating
PN25 Max Process Temp 50 °C (122 °F)
PN40 Max Process Temp 40 °C (104 °F)
OIML / MID Approved Meters 16 bar (232 psi)
UL Fire Service approved meters 285 psi
Pressure equipment directive 97/23/EC
This product is applicable in networks for the supply,
distribution and discharge of water and associated
equipment and is therefore exempt.
IP rating
IP68 (NEMA 6) to 7 m (20 ft.) depth
Note. Not sizes DN10 to DN32 (3/8 – 11/4 in. NB)
IP67 (NEMA 4X) – DN10 to DN32 (3/8 – 1¼ in. NB)
Buriable (sensor only)
FEV, FEF and FEW – DN450 to 2400 (18 to 96 in. NB)
to 5 m (16 ft.) depth
Conductivity
>20 µS cm–1
Transmitter mounting
Integral (not FEF) or remote
Electrical connections
20 mm glands
½ in. NPT
20 mm armored glands
Sensor cable
ABB WaterMaster cable available in two forms –
standard and armored
Maximum length 200 m (660 ft.)
Suspended solids
Suspended solids percentage of process medium should
not exceed 6 % of total volume
Physical specification
Wetted parts
Electrode material
Stainless steel 316 L / 316 Ti
Super-austenitic steel
Hastelloy® C-22 and Hastelloy C4
(other electrode materials available on request)
Potential equalizing rings
Minimum of 1 recommended
Lining material / potable water approvals
Potable Water Approvals
Code Size Range Liner WRAS
WRAS
60°C
ACS DVGW NSF
AZ/
NZS
4020



PTFE




PTFE



Elastomer
 



Hard
rubber
  
NSF
approved
material
FEV


Poly-
propylene
  


FEF


Elastomer
  


FEF


Hard
rubber
  
NSF
approved
material
FER


Elastomer
   
*Size is dependent on flange specification
Lining protection plates
Not required
Installation conditions (recommended)
Straight pipe requirements
Upstream Downstream
FEW / FEF 5 x DN 2 x DN
FEV 5x DN 0 x DN
FER 0 x DN 0 x DN
Pressure loss
Negligible at Q3 All full bore meters
<0.25 bar (<3.62 psi) at Q3 FEV (DN40 to 200
[1½ to 8 in. NB])
<0.63 bar (<9.13 psi) at Q3 FER (DN40 to 600
[1½ to 24in. NB])