FPS Aquarian 9300-0002 Probe

Fossil Aquarian 9300-0002

The Aquarian 9300-0002 is a high-pressure probe manufactured by Fossil Power Systems. This probe is common in a number of systems that were part of a partnership gone wrong or copied by other companies. Fossil Aquarian, Tyco, Yarway, and Penberthy all share this common design. The pricing on the OEM parts is extremely high for no real reason. The DL964 is a direct replacement for all these probes and is available at a much lower price, but with the same quality and warranty.

The Aquarian OEM probe is constructed using brazed 304 stainless steel and a zirconia insulator. 304 stainless steel is not the best material to use for probe construction. The thermal expansion coefficient (rate of expansion with increase in temperature) of the two materials does not match well and it leaves the probe susceptible to failure at the brazed joint. Drumline use materials that are more closely matched in terms of thermal expansion coefficient, which results in a more reliable probe.

All probes come with the option of large thumb nut or 2 x knurled nuts, as per the pictures. The default is the one in the main picture. This will be supplied unless otherwise requested. 

All Drumline Ltd Levelstep probes are manufactured to the highest standards in the UK using stainless steel to zirconia (or ZTA) vacuum brazing. All materials are carefully selected to minimise The coefficient of thermal expansion (CTE) differences within the materials. This leads to a more reliable brazed joint. All probes have the brazed joints gilded to add an extra degree of protection. 

Multi-Probe Electronic Level Indicator - Electronic boiler drum level monitoring equipment and electronic single or multipoint level switches use vacuum-brazed conductivity based level probes to provide the sensing element of the system. These are typically constructed from stainless stee and a brazed zirconia insulator (Zirconia toughened Alumina being another option for higher temperatures). There are numerous drum level indicators in the world and typically they charge a premium price for replacement level probes. Drumline probes are the same construction and materials, but are priced at more realistic levels, which are between 50% and 500% lower than the OEMS.