MODEL 551

COMPACT SIZE PRESSURE/LEVEL TRANSMITTER

Download the Delta Controls Model 551 Detailed Datasheet 
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Features

• Small Size For Tight Places
• Two Wire Loop Powered
• 4-20 mADC, Intrinsically Safe
• Integral Electronics/Sensor Module; Potted for Corrosive Locations
• Surface Mount Silicon Electronics
• Used For Pressure Or Level Measurement
• NPT, ANSI, DIN, or JIS Process Connection
• Ranges From 12 Inches Water To 1000 PSI (0.3 to 70 Bar)
• Zero & Span Pots For Field Recalibration
• Spark & Voltage Surge Protection
• Maintenance Free Operation

Description

The Delta Controls Model 551 Pressure Transmitter incorporates both the sensor and the electronics in a module mounted in a heavy duty body. Its compact size makes it ideal for very limited space conditions.

The sensor includes an oil filled 316-L S.S. or Hastelloy"C"® diaphragm which isolates the strain gage bridge from the process liquid or gas. The back of the sensor is usually vented to atmosphere to compensate for barometric pressure changes.

Application

The Delta Controls Model 551 is used to measure and transmit the pressure of liquids and gases in pipelines, tanks, ducts and other containments. The 551 is commonly used as a liquid level transmitter in vented tanks. The pressure at the bottom of a vented tank containing a liquid is linearly proportional to the height and density of the liquid.

Specifications

• Technology: Silicon Strain gage.
• Supply Power: 13 to 35 VDC, 2 Wire loop powered
• Output: 4-20 mADC isolated, Intrinsically Safe
• Loop Impedance: 550 ohms @ 24 VDC, 1100 ohms @ 35 VDC
• Adjustments: Span from 30% to 100% of sensor range, Zero to 30% basic and to 80% optionally, non-interactive.
• Over Pressure: 2X Range (35 PSI, 2.5 Bar min) without damage, 3X Range (1000 PSI / 70 Bar min) without rupture minimum
• Temperature Range:
  • -20 to +220°F (-30 to +105°C) Process
  • -20 to +185°F (-30 to +85°C) Electronics
  • 30 to +180°F (-1 to +65°C) Compensated (Higher Available)
• Accuracy: ± 0.25% F.S. or better
• Thermal Error: ± 0.02% F.S./ °F. maximum
• Barometric Effect: None

Optional Features

• ½" NPTM condensate pigtail for steam service.

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