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ZLD series intelligent radar level gauge (0-35m)
The ZLD series intelligent radar level gauge emits and receives high-frequency microwave pulses through an antenna system. The radar waves travel at t
Product details
ZLDSeries intelligent radar level gaugeHigh frequency microwave pulses are transmitted and received through an antenna system, and radar waves travel at the speed of light. The travel time can be converted into level signals through electronic components. A special time extension method can ensure stable and accurate measurements in a very short period of time.
ZLDThe series of intelligent radar level gauges can measure a maximum distance of 35 meters and can be used for level measurement of storage tanks, intermediate buffer tanks, or process containers, outputting 4-20mA analog signals. The radar level gauge antenna emits extremely narrow microwave pulses, which propagate at the speed of light in space. When they hit the surface of the measured medium, some of their energy is reflected back and received by the same antenna. The time interval between transmitting and receiving pulses is proportional to the distance from the antenna to the surface of the measured medium. Due to the extremely high propagation speed of electromagnetic waves, it is difficult to confirm the time interval between the emitted pulse and the received pulse, which is very small (in the nanosecond range). The RTUL series radar level gauge adopts a special correlation demodulation technology, which can accurately identify the time interval between the transmitted pulse and the received pulse, and further calculate the distance from the antenna to the surface of the measured medium. Application scope: industries such as petroleum, chemical, tap water, sewage treatment, water conservancy and hydrology, steel, coal mining, electricity, transportation, and food processing
2、 Characteristics of Intelligent Radar Level Gauge
●Adopting advanced non-contact measurement
Made with extremely stable materials
Measuring the level of liquid and solid media, particularly in situations where viscous liquids or large temperature and pressure changes are measured.
Can measure all media with a dielectric constant greater than 1.8
Measurement range 0... 20m (can be extended to 35 meters)
Adopting a two-wire system and loop power supply technology, the power supply voltage and output signal are transmitted through a two core cable
● 4... 20mA output or digital signal output
Resolution 1mm
Not affected by working conditions such as noise, steam, dust, vacuum, etc
Not affected by changes in medium density, viscosity, and temperature
The process pressure can reach 4MPa
The process temperature can reach 250 ℃,High temperature with heat sink.
●Due to the use of advanced microprocessors and unique EchoDiscovery echo processing technology, radar level gauges can be applied to various complex working conditions.
The "false echo learning" function enables the instrument to correctly confirm the true echo and obtain accurate measurement results under multiple false echo conditions.
Multiple process connection methods and antenna types make the RTUL series radar level gauges suitable for various complex working conditions. For example, measurement of high temperature, high pressure, and low dielectric constant media.
2、 Characteristics of Intelligent Radar Level Gauge
●Adopting advanced non-contact measurement
Made with extremely stable materials
Measuring the level of liquid and solid media, particularly in situations where viscous liquids or large temperature and pressure changes are measured.
Can measure all media with a dielectric constant greater than 1.8
Measurement range 0... 20m (can be extended to 35 meters)
Adopting a two-wire system and loop power supply technology, the power supply voltage and output signal are transmitted through a two core cable
● 4... 20mA output or digital signal output
Resolution 1mm
Not affected by working conditions such as noise, steam, dust, vacuum, etc
Not affected by changes in medium density, viscosity, and temperature
The process pressure can reach 4MPa
The process temperature can reach 250 ℃,High temperature with heat sink.
●Due to the use of advanced microprocessors and unique EchoDiscovery echo processing technology, radar level gauges can be applied to various complex working conditions.
The "false echo learning" function enables the instrument to correctly confirm the true echo and obtain accurate measurement results under multiple false echo conditions.
Multiple process connection methods and antenna types make the RTUL series radar level gauges suitable for various complex working conditions. For example, measurement of high temperature, high pressure, and low dielectric constant media.
ThreeTechnical parameters:
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Model number
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ZLD-A
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ZLD-B
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ZLD-C
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picture a flat
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Application scope
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Capable of measuring solid and liquid media, suitable for various complex measurements such as small dielectric constant media, corrosive working conditions, fly ash and other media, as well as volatile corrosive liquid media.
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Suitable for measuring solid and liquid media, especially highly corrosive media, and for level measurement under certain temperature and pressure conditions.
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The process conditions are simple and suitable for measuring corrosive media and solid material levels.
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measuring range
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0~35 meters
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0~15 meters
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0~10 meters
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Connection method
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flange
（DN80/100/150/200/250）
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flange
（DN50/80/100/150）
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Thread (G1-1/2 ″,
1-1/2″NPT）
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Warehouse opening
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Φ110/160/220/270mm
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Φ60/90/110/160mm
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Φ50mm
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Working pressure
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-1.0～4.0 MPa
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-1.0～2.0 MPa
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Antenna material
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stainless steel
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PP/PPFE
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accuracy
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<0.2% (top blind spot 500mm)
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<0.2% (blind spot is 500mm downwards from the beam angle emission point)
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pick appearance
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Echo sampling 55 times/second
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Explosion proof grade
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EXiaIICT6/ExdIICT6
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protection grade
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IP66
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signal output
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Two wire 4-20mA/HART or three wire 4-20mA
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Shell material
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Aluminum/ABS+PC
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Power supply mode
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Power supply: 24VDC (± 10%); Ripple voltage: 1Vpp; Power consumption: Maximum 22.5mA
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ambient temperature
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-40～80℃
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Display mode
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LEDdisplay
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cable interface
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M20×1.5
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ZLD intelligent radar level gauge selection spectrum:
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OW-ZLD-A
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P
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Standard type (non explosion proof)
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explosion-proof
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I
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Intrinsic safety type (Exia II CT6)
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F
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Explosion proof type (Exd II CT6)
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A
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User requirements
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Connection method
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B
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Flange DN80PN1.6 horn antenna 75mm/stainless steel
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C
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Flange DN80PN1.6 horn antenna 95mm/stainless steel
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D
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Flange DN80PN1.6 horn antenna 145mm/stainless steel
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E
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Flange DN80PN1.6 horn antenna 195mm/stainless steel
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F
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Flange DN80PN1.6 horn antenna 240mm/stainless steel
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1
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not have
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Antenna extension tube
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2
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200mm
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3
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300mm
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4
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400mm
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0
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Atmospheric pressure
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Working pressure
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1
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1.6MPa
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2
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2.5MPa
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3
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4.0MPa
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Ordinary seal: -40~150 ℃
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Sealing/process temperature
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High temperature sealing: -40~230 ℃
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□
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Example: 800 represents 800mm
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range
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Y
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belt
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The programmer
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N
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without
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1
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Two wire system DC24V
4~20mA/HART
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Power/signal output
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2
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Three wire system DC24V 4~20mA
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OW-ZLD-A
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Complete selection
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Product Selection 2:
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OW-ZLD-B
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P
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Standard type (non explosion proof)
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explosion-proof
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I
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Intrinsic safety type (Exia II CT6)
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F
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Explosion proof type (Exd II CT6)
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A
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PP/-40~80℃
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Antenna material/operating temperature
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B
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PTFE/-40~230℃
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1
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DN50 P1.6
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Flange specification (HG20594-97)
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2
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DN80 PN1.6
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3
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DN100 PN1.6
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4
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DN150 PN1.6
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1
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Carbon steel flange
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Flange form
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2
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Stainless steel flange
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3
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PPFlanged flange
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4
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PTFEFlanged flange
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1
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not have
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Container takeover length
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2
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50mm
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3
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100mm
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4
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150mm
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5
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200mm
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6
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according to user requirements
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Y
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belt
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The programmer
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N
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without
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1
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Two wire system DC24V
4~20mA/HART
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Connection
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2
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Three wire system DC24V 4~20mA
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OW- ZLD-B
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notes
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Product selection three:
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OW- ZLD-C
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P
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Standard type (non explosion proof)
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explosion-proof
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I
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Intrinsic safety type (Exia II CT6)
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F
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Explosion proof type (Exd II CT6)
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A
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PP/-40~80℃
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Antenna material/operating temperature
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B
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PTFE/-40~230℃
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1
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DN50 P1.6
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Flange specifications
（HG20594-97）
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2
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DN80 PN1.6
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3
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DN100 PN1.6
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4
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DN150 PN1.6
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G
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Thread G1-1/2
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Process connection
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N
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Thread 1-1/2NPT
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1
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not have
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Container takeover length
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2
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50mm
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3
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100mm
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4
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150mm
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5
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200mm
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6
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according to user requirements
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Y
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belt
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The programmer
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N
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without
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1
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Two wire system DC24V
4~20mA/HART
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Connection
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2
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Three wire system DC24V 4~20mA
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OW-ZLD-C
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notes
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Data required for ordering and selection:
1The type of medium being measured, liquid or solid. If it is liquid: whether there is steam, fog, foam, wave, agitation and floating objects on the liquid surface; If it is a solid: whether there is dust.
2The minimum to maximum temperature and pressure of the medium.
3The corrosiveness of the medium, if it is placed in a can, requires knowledge of the material of the can and whether there is a corrosion-resistant lining.
4Do you need explosion-proof and anti-corrosion measures.
5What is the measurement range in meters.
6Connection methods: flange connection, threaded connection.
7Work environment: such as open pools, covered pools, horizontal tanks, vertical tanks, spherical tanks, whether the tanks are at atmospheric pressure, etc.
8Operating voltage: 24VDC.
9Output signal: 4-20mA current.
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