Model 346 Housing (Braun Safety Port 25 mm – Pg13.5)

B5-13202-5T7

B5-11005-07-J

B2-LS103-015-M30

B4-21006-020-M10

B4-35005-020-M10

B4-41001-2T9-M10

B4-21005-015-M10

B4-35004-015-M10

B4-31024-8T9-B06

B4-31004-8T9-B06

B4-32023-5T7-B03

B4-21004-007-M10

B4-35002-005-M10

B4-31003-5T7-B06

B4-53004-020-M10

B4-22005-020-M10

B4-12004-020-M10

B2-LS202-020-M69

B5-11315-020

B5-11007-20-R

B4-82004-8T9-M27

B4-53003-015-M10

B4-22004-015-M10

B4-12003-015-M10

B4-44002-8T9-M27

B4-42002-8T9-M27

B4-72003-8T9-M27

B4-32005-8T9-B03

B4-32004-8T9-B03

B2-LS201-015-M69

B5-11314-015

B5-11006-15-R

B5-13103-8T9

B5-12103-8T9

B5-11355-07J

B4-21002-003-M10

B4-31002-2T3-B06

B4-35001-2T3-M06

B4-53002-007-M10

B4-22003-007-M10

B4-12002-007-M10

B4-32003-5T7-B03

B2-LS102-007-M30

B5-11313-007

B5-11004-07-R

B4-22002-005-M10

B5-11312-005

B5-11003-05-R

B5-13102-5T7

B5-12102-5T7

B5-11321-03J

B5-11002-03-J

B5-13201-003

B4-82002-2T7-G34

B4-82001-2T7-M18

B4-81003-2T9-M12

B4-81002-2T9-M10

B4-81001-2T3-M06

B5-51001-2T9-006

B4-53001-2T5-M10

B4-23001-2T9-M10

B4-22202-015

B4-22001-003-M10

B4-12001-2T5-M10

B4-44001-2T7-M18

B4-42001-2T7-M18

B4-72002-2T7-G34

B4-72001-2T7-M18

B4-32002-2T3-B03

B2-LS101-2T5-M30

B5-11311-2T3

B5-11001-03-R

B5-13101-003

B5-12101-003

There are two FermProbe® electrode housing designs, standard and metric, for B. Braun Biotech 25 mm side ports. These housings incorporate the latest B. Braun Biotech design requirements and are compatible with both the new 25 mm safety ports and the older 25 mm port designs.

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When these housings are used with the new B. Braun Biotech safety port, the port will release internal steam pressure in the vessel before the housing is completely disengaged from the port.

The standard FermProbe pH electrode is secured to the Models 326 and 336 style housings by a free-spinning threaded retainer nut. This allows the electrode to be installed and removed from the housing without twisting or disconnecting the electrode cable. This feature is very helpful when calibrating the pH electrode tank side in a production environment.

The metric FermProbe pH electrodes thread directly into the Models 346 and 356 style housings, eliminating the need for the threaded retainer nut. In order to prevent twisting the cable, the metric FermProbes have a detachable cable.

Guarded and unguarded versions are available. Using a guarded housing is highly recommended for pH electrodes to provide maximum protection against damage to the sensing bulb. However, highly viscous media is prone to clog the guard.

The model 326 and 336 housings are also designed to be used with Model F-607 and F-600 style FermProbe pH electrodes .

Storage of pH Electrodes

The first choice for storing FermProbe® electrodes is 2M KCl. If this is not available, buffer solution can be used, preferably pH 4 buffer. Deionized (DI) water should never be used to store pH electrodes. If an electrode has been stored in DI water the resistance of the junction will change, causing instability and noise in the reading. Soaking the electrode in 2M KCl overnight, prior to use, will usually reverse most of this effect.

Specification

  • 316L stainless steel construction.
  • Serialized for traceability to mill steel specifications.
  • RA32 finish with electropolish on all wetted parts.
  • FDA compliant external EPDM o-rings.
  • Permanently secured port retainer ring for additional operator safety.

Additional Features

  • Guarded versions for rugged handling while protecting the pH glass bulb in a production environment.
  • Unguarded versions for viscous media.
  • Custom designs and custom modifications promptly quoted.

How to Order a Housing

  1. Confirm that the vessel has a B. Braun Biotech 25 mm side port.
  2. Determine whether the application will permit the use of a bulb guard on the housing. The bulb guard design is highly recommended for all types of process applications except when media is highly viscous. Highly viscous media is prone to clog the guard area of the housing.
  3. Choose the correct steam sterilizable FermProbe pH electrode.
Housing Model Class Typical Vessel Insertion Length Used With pH Electrode Models Used With Electrode Length Housing Part Number
Model 346 D 25 mm ( 1″) F-635, F-695, F-800 120 mm 346-62-H085