KROHNE VARIFLUX 6000 EN - Manual (Page 11)

Installation instructions VARIFLUX 6000 11
11 Technical data
Size/type
DN 2.5 – 150 and 1 /
10
” – 6”
Available connections see page 3
Electrical conductivity ≥ 5 µS/cm (≥ 20 µS/cm for demineralized water)
Ambient temperature – 25 to + 60°C – 13 to + 140°C
Max. permissible operating data
Operating pressure / product temperature see table “Limits” in Sect. 6
Vacuum load 0 mbar abs. / 0 psia
Insulation class of field coils H
Electrode design permanently fitted ( ≥ DN 25 / ≥ 1” surface
polished)
Power for field coils > 60 V from signal converter
Protection category (IEC 529/EN 60 529) IP 67, equivalent to NEMA 6
Materials
Measuring tube stainless steel 1.4301
Liner clear, virgin PFA, FDA-approved
DN 2.5 - 10 /
1
/
10
” -
3
/
8
” reinforced with sintered metal bearing bush
DN 15 - 150 /
1
/
2
” - 6” reinforced with stainless steel mesh
Electrodes
Standard Hastelloy C4
Special versions: ≤ DN 15 / ½’’
≥ DN 25 / 1’’
Hastelloy B2, stainless steel 1.4571/316 Ti-AISI,
titanium, tantalum, platinum
stainless steel 1.4401/316L, titanium
Connections stainless steel 1.4404/316L-AISI
L-shaped gaskets
Standard EPDM
Option
Silicone or FKM
Housing
DN 2.5 - 15 mm /
1
/
10
” -
1
/
2
” stainless steel 1.4462 Duplex
DN 25 - 150 mm / 1” - 6” stainless steel 1.4301/304-AISI
Terminal box
Standard die cast aluminium, paint finish
Special version stainless steel 1.4301/304-AISI, others on request