7773 mounting capabilities encompass the industrial measurements of pH, ORP, specific ion and temperature in a flow or submersion configuration. 7773 is available in seven configurations; change between flow and submersion-type mounting requires substitution of only one part. When supplied with a preamplifier, the mounting can be used with any Honeywell analyzer/controller or transmitter. Wetted material choices include 316 stainless steel, glass-fiber reinforced polypropylene or Ryton for use in corrosive solutions at pressures up to 1034 kPa (150 psig) and temperatures up to 130°C (266°F).

• Polypropylene offers the advantage of a lightweight, tough plastic with good chemical resistance at low cost. The material may be weakened by some organic solvents and chlorine but is recommended for all general purpose applications.
• Ryton provides excellent chemical resistance and higher temperature and pressure ratings than polypropylene at moderate cost.
• 316 stainless steel offers ruggedness and the highest pressure ratings.

Honeywell’s 7773 mounting is available with the widest available electrode, preamplifier, automatic temperature compensator and mounting assembly options. Capabilities now include state-of-the-art ISFET technology with Honeywell Durafet® II electrode options. These truly solid state sensors feature exceptionally fast response and a low impedance signal right from the sensing element that is virtually unbreakable. An improved packaging design allows the Durafet II electrode to be used in a wide variety of process applications. Preamplifier options allow interface with Honeywell or other pH instrumentation. The 12.0mm diameter combination Durafet II pH electrode is specifically designed for use with the 7773 immersion or flow through housing.

Meredian II pH measuring electrodes installed with the 7773 mountings are useable over a wide pH range. These sensitive, rugged electrodes have quick-disconnect cable connections. Glass membrane formulations are available for a variety of temperature ranges.

Reference electrodes are filled with a KCI slurry or a long-lasting viscous KCI gel. The gel is recommended for general purpose use, especially for applications involving severe contamination, temperature or pressure cycling, continuous high temperatures and dry periods. The Ryton electrode is virtually unbreakable and has an easily replaced porous-plug junction of ceramic. The glass body reference electrode has the porous plug sealed into the tube and the cap, and internal elements are removable for maintenance.