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9 Supplement
WIKA Operating Instructions - Process pressure transmitter CPT-2x
9 Supplement
9.1 Technical data
Note for approved instruments
The technical data in the respective safety instructions which are included in delivery are valid for
approved instruments (e.g. with Ex approval). These data can differ from the data listed herein, for
example regarding the process conditions or the voltage supply.
All approval documents can be downloaded from our homepage.
Materials and weights
Materials, wetted parts
Process fitting
316L, PVDF, Alloy C22 (2.4602), Alloy C276 (2.4819),
Duplex (1.4462), Titanium Grade 2
Diaphragm
Sapphire-ceramic
®
(> 99.9 % Al
2
O
3
ceramic)
Joining material, diaphragm/base ele-
ment of measuring cell
Glass (with double and form seal, non-wetted parts)
Measuring cell seal
FKM (VP2/A, A+P 70.16), EPDM (A+P 70.10-02), FFKM
(Kalrez 6375, Perlast G75S, Perlast G75B)
Seal for process fitting (in the scope of delivery)
Ʋ Thread G½ (EN 837), G1½
(DIN 3852-A)
Klingersil C-4400
Ʋ Hygienic connection with compres-
sion nut
FKM, EPDM, FFKM, FEPM
Ʋ M44 x 1.25 (DIN 13), M30 x 1.5
FKM, FFKM, EPDM
Materials for applications in foodstuffs
Surface quality, hygienic fittings, typ.
Ʋ Process fitting
R
a
< 0.8 µm
Ʋ Ceramic diaphragm
R
a
< 0.5 µm
Seal below wall mounting plate with 3A
approval
EPDM
Materials, non-wetted parts
Housing
Ʋ Plastic housing
Plastic PBT (Polyester)
Ʋ Aluminium die-cast housing
Aluminium die-casting AlSi10Mg, powder-coated (Basis:
Polyester)
Ʋ Stainless steel housing
316L
Ʋ Cable gland
PA, stainless steel, brass
Ʋ Sealing, cable gland
NBR
Ʋ Blind plug, cable gland
PA
Ʋ Seal between housing and housing lid Silicone SI 850 R, NBR silicone-free
Ʋ Inspection window housing cover
Polycarbonate (UL-746-C listed), glass
5)
Ʋ Ground terminal
316L
5)
Glass with Aluminium and stainless steel precision casting housing