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Model P57 Detailed Datasheet 
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Features
· Direct insertion, open
construction
· A rod parallel to the sensing probe provides a linear ground reference and
increases sensitivity
· PTFE Teflon® sensing rod jacket allows operation in conductive or nonconductive
liquids
· High pressure PTFE Teflon® seal is reliable. Thousands have been in
service for over 30 years
· Service working pressure to 1500 PSIG (100 BAR)
· Service working temperature to 450°F (230°C)
· Can be used to measure liquids with entrained solids in most applications
· Works in highly corrosive applications
· Available with sanitary flange
Application
The Delta Controls Model P57 probe is commonly used in tanks made of reinforced plastics, or metal tanks lined with rubber or plastic. Such tanks do not provide the ground reference plane required by an admittance instrument. The P57 has a ground rod, mounted parallel to the insulated sensing probe, which provides the required ground reference. A stability bar(s) stabilizes the sensing probe and ground rod position when the insertion length is long.
The Delta Controls P57 is widely used on water treatment chemicals, stored fuel oil, day tanks, oil/water interface, and processed food oils. The open design allows it to be used in many applications; even when solids are entrained in the liquid.
Specifications
Working Pressure:
1500 PSIG (100 BAR) @ 100°F (40°C).
Working Temperature: -460 to +450°F (-273 to +233°C), using
temperature extensions.
Insertion Length: Up to 20 feet (6 meters).
Process Connection: 1½" ANSI male pipe thread; larger sizes and
flanges are optional.
Electronic Module: Compatible with all Delta Controls Models.
Process Temperature Sensing: Optional.
Insulation and Seals: PTFE Teflon®.
Wetted Body/Connection Material: Steel, 316 Stainless Steel,
Hastelloy® "C", PVC, or Kynar®.
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