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8188 Guided Microwave Level Measurement Device
Brand: Burkert Fluid Control Systems
The Type 8188 is a level measurement device with cable, rod, both interchangeable probe or with coax probe, designed for continuous level measurement. The unit is suitable for liquids, for industrial use in all areas of process technology.
With a measuring range up to 75 meters, the 8188 is best suited for tall vessels. Even process conditions such as strong steam generation, density fluctuations or changes of the dielectric constant do not influence the accuracy of the measurement. Build-up or condensation on the probe or vessel wall do not influence the measuring result.
A liquid interface measurement is also possible with the Type 8188, typically an oil/ water interface.
Features- Universal level measurement device for liquids
- Liquid interface measurement
- Insensitive to dust and steam
- 4-20 mA/HART - 2-Wires, ATEX/IECEx certification
Specifications
Accuracy
- Measurement Deviation: ± 2 mm
Ambient Temperature Range
- Conformity Specification: -50° to 46° C (-58° to 114.8° F)
- With Display, Adjustment Elements (Operation & Storage): -40° to 80° C (-40° to 176° F)
Applications
- Bio-ethanol Storage Tanks
- Separating Tank, to Determine the Exact Proportion of Each Substance
- Volatile & Low-viscosity Solvents Vessels
Approvals & Certifications
- ATEX: EN 60079-0, EN 60079-11, EN 60079-26
- CE
- EEx ia IIC T6
- EU
- IECEx TUR 14.0014 X
- NAMUR: NE 21, NE 43
- TÜV
BSP Connection
- G 1” Male
- G 1/2” Male
- G 1-1/2” Male
- G 3/4” Male
Cable Length
- Cable-Ø 4 mm: 0.5 to 75 metres, Max.
- Rod-Ø 8 mm (Lateral Load: 10 Nm), Coaxial-Ø 21.3 mm (Lateral Load: 60 Nm): 0.3 to 6 metres
Cable Material
- Cable-Ø 4 mm with Gravity Weight: 316L Stainless Steel (1.4404 or 1.4435)
- PEEK
- Polyphenylene Sulfide (PPS)
Class
- Protection: Class III (IEC 61010-1)
Communication
- HART
Cover Material
- Polycarbonate (PC)
Current
- 21.5 mA - Max.
- Fault Signal (Adjustable): < 3.6 mA
- Fault Signal (Adjustable): ≥ 21 mA
Damping Adjustment
- 63 % of the Input Variable: 0 to 999 seconds
Deadband
- Oil (Coaxial -Ø 21.3 mm): from Top of Probe 100 mm
- Oil (Rod-Ø 8 mm - from Top of Probe, Cable-Ø 4 mm - from Bottom & Top of Probe): 150 mm
- Oil (Rod-Ø 8 mm, Coaxial-Ø 21.3 mm): from Bottom of Probe 50 mm
- Water (Coaxial-Ø 21.3 mm): from Top of Probe 30 mm (From Bottom of Probe 0 mm)
- Water (Rod-Ø 8 mm, Cable-Ø 4 mm): from Top of Probe 80 mm (From Bottom of Probe 0 mm)
Display
- LCD in Full Dot Matrix
Electrical Connectors
- Cable Gland 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 - 1-1/2” (DN 40)
- Unrated
Flange Size - 1” (DN 25)
- Unrated
Flange Size - 2” (DN 50)
- Unrated
Flange Size - 3” (DN 80)
- Unrated
Flange Size - 4” (DN 100)
- Unrated
Flange Size - 6” (DN 150)
- Unrated
Humidity
- Operation: 75 % Relative Humidity, Max.
- Storage: 85 % Relative Humidity, Max.
Inductance
- Internal: ≤ 5 µH
Materials of Construction
- Ground Terminal: 316L Stainless Steel
Measuring Range
- 0.03 to 6 metres
- 0.08 to 75 metres
NPT Connection
- 1” NPT Male
- 1/2” NPT Male
- 1-1/2” NPT Male
- 3/4” NPT Male
Operating Voltages
- 9.6-30 Vdc (Ex ia Instrument)
- 9.6-35 Vdc
- Conformity Specification: 30 V
Output
- 4-20 mA / HART (2-Wire)
Power
- 983 mW
Pressure Range
- bar: -1 to 40
- kPa: -100 to 4,000
- psi: -14.51 to 580.1
Process Temperature
- -40° to 150° C (-40° to 302° F)
Repeatability
- ± 1 mm, Max.
Resistance
- 250 ohms
Resolution
- 0.3 µA
Ring Material
- Seal Ring: NBR
Seat / Seal Material
- Process Seal Inner Conductor: FKM
Sensor, Probe Type
- Cable
- Coaxial
- Rod
Thermal Drift
- 0.03 % / 10 K
Wetted Materials
- Process Fitting Rod (Version up to 40 bar): PEEK
- Process Fitting Rod (Version up to 6 bar): PPS (Polyphenylene Sulfide)
- Process Fitting Rod, Coaxial-Ø 21.3 mm, Rod-Ø 8 mm: 316L Stainless Steel (1.4404 or 1.4435)
- Spacers: PFA (Only for Coaxial Probe Version)
Level measurement in:
- Bio-ethanol storage tanks
- Volatile and low-viscosity solvents vessels
- Separating tank, to determine the exact proportion of each substance
