Supplement; Technical Data - bürkert 8138 Bedienerführung

11 Supplement

11.1 Technical data

General data
316L corresponds to 1.4404 or 1.4435
Materials, wetted parts
Ʋ Hygienic antenna encapsulation
Ʋ Surface roughness of the antenna
encapsulation
Ʋ Additional process seal with certain
hygienic fittings
Materials, non-wetted parts
Ʋ Process fitting
Ʋ Housing
Ʋ Seal between housing and housing
cover
Ʋ Inspection window in housing cover
(optional)
Ʋ Ground terminal
Ohmic contact
Process fittings
Ʋ Flanges
Ʋ Hygienic fittings
Weight (depending on housing, process
fitting and antenna)
Required torque of the flange screws
Max. torque for NPT cable glands and Conduit tubes
Ʋ Plastic housing
Ʋ Aluminium/Stainless steel housing
Input variable
Measured variable
LEVEL TRANSMITTER 8138 • 4 ... 20 mA/HART - two-wire
PTFE, TFM-PTFE, PFA
R < 0.8 µm
a
FKM, EPDM
316L
plastic PBT (Polyester), 316L
Silicone
Polycarbonate
316L
Between ground terminal and process fitting
DIN from DN 25, ASME from 1"
Clamp, slotted nut according to DIN 11851, hygienic
fitting with saddle flange according to DIN 11864-2-A,
SMS
approx. 3.5 ... 15.5 kg (4.409 ... 33.95 lbs)
60 Nm (44.25 lbf ft)
10 Nm (7.376 lbf ft)
50 Nm (36.88 lbf ft)
The measured quantity is the distance between process
fitting of the sensor and product surface. The reference
plane is the seal surface on the process fitting or the
lower side of the flange.
11 Supplement
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