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8138 Radar Level Measuring Device
Brand: Burkert Fluid Control Systems
The Type 8138 is a non-contact radar level measuring device for continuous level measurement. It is particularly suitable for use in small vessels that contain beverage liquids under sanitary process conditions.
Features- For level measurement up to 20 meters
- 4-20 mA/Hart - 2-Wires
- Adjustable via Display, key operation or PC-Tool with DTM
- ATEX approvals
Specifications
Accuracy
- ± 2 mm
Adjustment
- > 1 second (Dependent on the Parameter Adjustment)
Ambient Temperature Range
- Conformity Specification: -40° to 55° C (-40° to 131° F)
- Operation & Storage: -40° to 80° C (-40° to 176° F)
Applications
- In Highly Purified Water
- In the Stirring & Preparation Vessel
Approvals & Certifications
- Security: EN 61010-1
- ATEX: EN 60079-0, EN 60079-11, EN 60079-26
- EMC EN 61326
- Ex ia IIC T6
- FDA
- NAMUR: NE 21, NE 43
- PTB 08
Class
- Protection: Class II
Communication
- HART
Cover Material
- Polycarbonate (PC)
Current
- Fault Signal: < 3.6 mA (Selectable)
- Fault Signal: 20.5 mA (Output Unchanged)
- Fault Signal: 22 mA (Selectable)
Damping Adjustment
- 63 % of the Input Variable: 0 to 999 seconds
Deadband
- Dead Zone: 50 mm
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
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150# (ANSI B16.5)
- 2” (DN 50) - PN 16 (DIN 2501)
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150# (ANSI B16.5)
- 3” (DN 80) - PN 40 (DIN 2501)
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150# (ANSI B16.5)
- 4” (DN 100) - PN 16 (DIN 2501)
Flange Size - 6” (DN 150)
- 6” (DN 150) - 150# (ANSI B16.5)
- 6” (DN 150) - PN 16 (DIN 2501)
- 6” (DN 150) - PN 40 (DIN 2501)
Frequency
- K-band (26 GHz Technology)
Humidity
- 80 %, Max.
Interval Time
- Approximately 1 second
Load Resistance
- 1,000 ohms
Materials of Construction
- Ground Terminal: 316L Stainless Steel 1.4435
- Ground Terminal: 316Ti Stainless Steel 1.4571
Measuring Range
- 0.05 to 10 metres (Clamp 2”, DN 25 Connection or Flange DN 50 Version)
- 0.05 to 20 metres (Flange DN 100)
NPT Connection
- 1/2” NPT
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: -1 to 16
- kPa: -100 to 1,600
- psi: -14.51 to 232.16
Process Connection Material
- 316L Stainless Steel
Process Temperature
- With DN 25 Connection: -40° to 130° C (-40° to 266° F)
- With Clamp, Flange Connection: -40° to 200° C (-40° to 392° F)
Resistance
- 250 ohms
Resolution
- 1 mm, Max.
- 1.6 µA
Ring Material
- Seal Ring: NBR
Seat / Seal Material
- Seal: EPDM
Temperature Coefficient
- 0.03 % / 10 K (Average Temperature Coefficient of the Zero Signal Temperature Error)
Torque
- Torque of the Flange Screws: 60 Nm (531 In/Lbs)
Tri-Clamp Connection
- 2” Sanitary Clamp
- 3” Sanitary Clamp
- 4” Sanitary Clamp
Vibration
- Vibration Resistance: Mechanical Vibrations with 4 G at 5 to 100 Hz
Wetted Materials
- Antenna: TFM-PTFE
- In the Stirring & Preparation Vessel
- In highly purified water