8177 Ultrasonic Level Measuring Device

Brand: Burkert Fluid Control Systems

The Type 8177 is a non-contact ultrasonic level measuring device designed for continuous level measurement in open or closed vessels. 

The unit is suitable for liquids, but also for solids, in virtually all industries, particularly in water and waste water management.
Features
  • For level measurement up to 8 meters
  • 4-20 mA/HART - 2-Wires
  • Suitable for solids
  • ATEX certification

Specifications

Adjustment

  • > 3 seconds

Ambient Temperature Range

  • Conformity Specification: -20° to 41° C (-4° to 105.8° F)
  • With Display, Adjustment Elements: -20° to 70° C (-4° to 158° F) (Operation & Storage)

Applications

  • Continuous Level Measuring for Fluids & Solids
  • Distance Measuring
  • Open Basins
  • Sludge Container

Approvals & Certifications

  • ATEX: EN 50014, EN 50020, EN 50284
  • CE
  • EEx ia IIC T6
  • EU
  • NAMUR: NE 21, NE 43
  • PTB

BSP Connection

  • G 2” Male

Class

  • Protection: Class II

Cover Material

  • Polycarbonate (PC)

Current

  • Fault Signal: < 3.6 mA (Adjustable)
  • Fault Signal: 20.5 mA Output Unchanged
  • Fault Signal: 22 mA (Adjustable)

Damping Adjustment

  • 63 % of the Input Variable: 0 to 999 seconds

Deadband

  • Dead Zone: 1.3 feet (0.4 metres)

Display

  • LCD in Full Dot Matrix

Electrical Connectors

  • Cable Glands M20 x 1.5

Electrical Rating

  • Short Circuit Rating: 131 mA

Enclosure, Body Material

  • 316L Stainless Steel, 1.4404
  • Polybutylene Terephthalate (PBT)

Environmental Protection

  • IP66
  • IP67

Frequency

  • 55 kHz

Humidity

  • Operation: 75 % Relative Humidity, Max.
  • Storage: 85 % Relative Humidity, Max.

Interval Time

  • > 2 seconds

Load Resistance

  • 1,000 ohms

Materials of Construction

  • Ground Terminal: 316L Stainless Steel 1.4435
  • Ground Terminal: 316Ti Stainless Steel 1.4571

Measuring Error

  • < 0.2 % or ± 4 mm

Measuring Range

  • Liquids: 0.4 to 8 metres
  • Solids: 0.4 to 3.5 metres

NPT Connection

  • 1/2” NPT Male
  • 2” NPT Male

Operating Voltages

  • 14-30 Vdc (Ex ia Instrument)
  • 14-36 Vdc
  • Conformity Specification: 30 V

Output

  • 4-20 mA / HART (2-Wire)

Power

  • 983 mW

Pressure Range

  • bar: -0.2 to 2
  • kPa: -20 to 200
  • psi: -2.9 to 29.02

Principle of Operation

  • Ultrasonic

Process Connection Material

  • PVDF

Process Temperature

  • -40° to 80° C (-40° to 176° F)

Resolution

  • 1 mm, Max.
  • 1.6 µA

Ring Material

  • Seal Ring: EPDM

Seat / Seal Material

  • Process Seal: EPDM

Temperature Coefficient

  • 0.06 % / 10K (Average Temperature Coefficient of the Zero Signal - Temperature Error)

Torque

  • Torque Mounting Boss: 25 Nm, Max.

Vibration

  • Vibration Resistance: Mechanical Vibrations with 4 G at 5 to 100 Hz

Wetted Materials

  • Transducer: PVDF

  • Continuous Level Measuring for Fluids & Solids
  • Open basins
  • Distance measuring
  • Sludge container

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