Download the Delta
Controls Model P51 and P52 Datasheet 
Note: You will need the Acrobat Reader to view the data sheet. 
Features
· General purpose for most
applications
· Simple construction and easily installed
· Small 3/4" MPT process connection size
· PTFE Teflon® insulation allows operation in conductive or nonconductive
liquids at high temperatures
· High pressure Teflon® seal is reliable; up to 1500 PSIG (100 bar) working
pressure @ 100°F (40°C)
· Up to 450°F (230°C) process temperature
· Clamped Teflon® seal is very reliable, thousands have been in service for
more than 30 years
· Double gland seal available for lethal and toxic services
· Open design resists material deposition and is easy to clean. Sanitary flanges
are also available
· Easy to install, vertically or horizontally; top down, bottom up, or in from
the vessel side
· Can be used in many slurry and entrained solids applications
Application
The Delta Controls Model P51 and P52 probes are designed as a general purpose sensors for use in many common applications. The sensing rod is jacketed in thick extruded and welded PTFE Teflon®. There are no thin coatings or glued joints to fail.
The sensing rod sealing gland is extremely reliable. Thousands have been installed over the last 30 years, sealing in such process materials as steam, hydrogen cyanide, gasoline, chlorine, liquid oxygen, chocolate, and wastewater. The gland follower seals are inside the body, which has a solid exterior. There are no screwed joints in the gland which can inadvertently be turned, causing leaks, environmental spills, or toxic discharges. The gland body may be made of exotic metal or industrial plastics for highly corrosive services.
The Delta Controls P52 probe has the same appearance as the P51 probe except that it has a larger gland, seal, and sensing probe. It is intended for use in services with higher mechanical stress, such as agitated tanks, services requiring long unsupported sensing rods, mixers, and the like.
Specifications
Working Pressure:
1500 PSIG (100 BAR) at 100°F (40°C)
Working Temperature: -460 to +400°F (-273 to +200°C)
Temperature Extension: Required for less than -20°F (-30°C)
or higher than 175°F (80°C)
Insertion Length: To 20 feet (6 M)
Process Connection: MPT basic, flanged (any type) is optional
Electronics Module: Compatible with all Delta Controls Models
Wall Mount Support Bracket: Optional
Process Temperature Sensing: Optional on P52 only; any span
from -125 to 250°F (-85 to 120°C); over a second 4-20 mA isolated signal loop.
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