Unguarded Metric Electrode Housings for Standard 25 mm Side Ports
Specifications
How to select the correct housing
Ordering Information
These electrode housings are designed to be used with model F-635 and F-695 Metric FermProbes® and models D140 or D145 12 mm OxyProbes®. They are also compatible with any electrode that has Pg13.5 threads. These housings fit nearly all standard 25 mm ports found on production and pilot plant vessels. Different housing lengths are available to accommodate various application or vessel requirements.

The sensor threads directly into this metric housing, eliminating the threaded retainer ring. In order to prevent twisting the cable, the metric FermProbes have a detachable cable.

Guarded and unguarded versions are also 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.

SPECIFICATIONS

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

How to select the correct housing

(1) Confirm the opening is a standard 25 mm side port.

(2) Determine whether the application will permit the use of a bulb guard on the housing. The bulb guard is highly recommended for all applications except when the media is very viscous. Highly viscous media is prone to clog the guard.

(3) Determine how far the housing and sensor should extend into the vessel.

(4) Confirm the sensor is a metric FermProbe, models D140 or D145 OxyProbe or European sensor with Pg13.5 threads.
Ordering Information
Call 1-800-288-2833 – For Price & Delivery
Housing Model Class
 Typical Vessel Insertion Length Used With pH and D.O. Electrode Models Used With Electrode Length Housing Part Number
Unguarded Housings
325 D 37 mm (1.5") F-695, F-635,
D-140, D-145
 120 mm 325-61-H070
325 F 113 mm (4.5") F-695, F-635,
D-140, D-145		 200 mm 325-61-H150
Guarded Housings
335 D 52 mm (2.1") F-695, F-635 120 mm 335-61-H070
335 F 128 mm (5.0") F-695, F-635 200 mm 335-61-H150

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