8  FEP630, FEH630 ELECTROMAGNETIC FLOWMETER  |  OI/FEP630/FEH630-EN REV. D   
 
 
… 2  Design and function 
… Overview 
 
HygienicMaster 
 
Integral mount design  Remote mount design 
G12161
FEH631 FEH632
1 2
 
1  Single-compartment transmitter housing   
 
2  Dual-compartment transmitter housing 
Figure 2:  Designs (example, devices with variable process connections) 
 
Flowmeter sensor 
Model  HygienicMaster FEH631, FEH632, FET632 
Housing  Integral mount design, remote mount design 
Measuring accuracy for liquids  0.4 % of the measured value, option for 0.3 % and 0.2 % of the measured value 
Permissible measuring medium 
temperature T
medium
 
Standard: −25 to 130 °C (−13 to 266 °F), DN 1 to 2 limited to a maximum of 120 °C (248 °F) 
Option: −25 to 180 °C (−13 to 356 °F), flange devices only 
Minimum conductivity  > 5 µS/cm, (> 20 µS/cm for demineralized water) 
> 20 µS/cm for nominal diameter DN 1 to 2 (¹⁄₂₅ to ¹⁄₁₂in) 
Nominal pressure  PN 10 to 40, ASME CL 150, 300, JIS 10K 
Nominal diameter  DN 1 to 100 (¹⁄₂₅ to 4 in) 
Process connection  Wafer type design: 
Flange in accordance with DIN, ASME or JIS 
Screwed connections for the food industry in accordance 
with DIN 11851: 
Welded spuds: 
Tri-clamp in accordance with DIN 32676 
Tri-clamp in accordance with ASME BPE: 
External thread in acc. with ISO 228 / DIN 2999 
DN 3 to 100 (¹⁄₁₀ to 4 in) 
DN 3 to 100 (¹⁄₁₀ to 4 in), PN 10 to 40 
 
DN 3 to 100 (¹⁄₁₀ to 4 in), PN 10 to 40 
DN 3 to 100 (¹⁄₁₀ to 4 in), PN 10 to 40 
DN 3 to 100 (¹⁄₁₀ to 4 in), PN 10 to 16 
DN 3 to 100 (¹⁄₁₀ to 4 in), PN 10 
DN 3 to 25 (¹⁄₁₀ to 1 in), PN 16 
Materials process connection  Flange design: stainless steel, variable process connections: 1.4404; 
devices with nominal diameter DN 1 to 2 (¹⁄₂₅ to ¹⁄₁₂ in): stainless steel 1.4571 (AISI 316 Ti), PVC, POM 
Lining material  PFA [vacuum-tight, from DN 3 (¹⁄₁₀ in)], PEEK [DN 1 to 2 (¹⁄₂₅ to ¹⁄₁₂ in)] 
Electrode material  Stainless steel 1.4571 (AISI 316Ti), 1.4539 [904L], Hastelloy B®, Hastelloy C®, platinum-iridium, tantalum, titanium 
IP rating  Integral mount design: IP 65 / IP 67, NEMA 4X 
Remote mount design: IP 65 / IP 67 / IP 68 (sensor only), NEMA 4X 
 
Approvals   
Pressure Equipment Directive 
2014/68/EU 
Conformity assessment in accordance with category III, fluid group 1 
CRN (Canadian regulatory number)  On request 
Hygiene design approvals  3A, FDA-approved materials 
Explosion protection (in preparation)  ATEX / IECEx Zone 1, 2, 21, 22; FM / cFM Cl 1 Div. 1, Cl 1 Div. 2 
Additional approvals  At www.abb.com/flow or on request.