Model 565

SKU: 565

Pressure Transmitter, Large Diaphragm, Integral Electronics

The Delta Controls Model 565 Level Transmitter is a completely self-contained head pressure type level transmitter. The electronics and calibration adjustments are contained inside the body with the strain gage sensor. It is of modular construction and is field repairable. The cable is sealed to the transmitter body.

When installed in a lift station, sump, basin, or other containment, the strain gage sensor detects the liquid level as a function of the height and density of the liquid above it. Because the diaphragm is completely open to the product being measured, it cannot be plugged and rendered inoperable by liquids with high solids content such as sewage, wastewater, and slurries. The diaphragm is fabricated from tough rubber and is coupled to the strain gage through a nontoxic oil fill. The abrasion resistant face has superior resistance to damage from gravel and other moving solids. Its large 3″ active face size and its smooth outer surface makes it extremely durable and reliable in harsh services. A vent tube connected directly to the sensor automatically compensates for changes in atmospheric pressure. A desiccant filter or isolation bladder prevents condensation in the vent tube. No refilling or maintenance is required for the bladder.


  • Large, Rugged BUNA-N® Rubber Diaphragm Isolator For Wastewater And Slurries
  • Supported By Rigid Pipe Or Flexible SS Cable
  • 4-20 mADC, 2 Wire
  • 316 Stainless Steel Or Hastelloy"C"® Body
  • PVC Or TEF Cable Jacket
  • Zero & Span Pots For Field Recalibration
  • Spark & Voltage Surge Protection
  • Cable Junction Box With Isolation Bladder
  • Reliable, No Maintenance


  • Technology: Silicon strain gage
  • Supply Power: 13 to 35 VDC, 2 wire loop powered
  • Output Signal: 4-20 mADC isolated, Intrinsically Safe
  • Loop Impedance: 550 ohms at 24 VDC. 1100 ohms at 35 VDC
  • Adjustments: Span from 30% to 100% of sensor range. Zero to 30% basic; non-interactive.
  • Temperature Range:
    • -20 to +220°F (-30 to +105°C) Process
    • -20 to +180°F (-30 to +85°C) Electronics
    • 30 to +130°F (-1 to +55°C) Compensated (Higher Available)
  • Accuracy: ± 0.25% F.S. or better
  • Thermal Error: ± 0.02% F.S./ °F maximum
  • Barometric Effect: None
  • Over Pressure: 2x rated pressure range; 35 PSI (2.5 Bar) minimum


  • Sewage Lift Stations
  • Lime Slurry
  • Aerobic Digestors
  • Drilling Mud
  • Retention Basins
  • Latex Paint
  • Alum Tanks
  • Catch Tanks
  • Wastewater Sumps
  • Oil Field Slop Tanks

Optional Features

  • Large LCD; readout in engineering units
  • DC Power Supply for loop and alarms in box
  • Alarm Module (1 or 2); SPDT, 5 amp contacts
  • Model 352, 354, 358 or 360 pump controller

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