Guided wave radar level transmitter uses advanced microprocessor technology and unique EchoDiscovery echo processing technology, along with multiple process connection options and types of detection components. This makes the ZDW921 series suitable for various complex working conditions and applications, such as high temperature, high pressure, and media with low dielectric constants. The guided wave radar level transmitter operates in pulse mode with very low transmission power, allowing it to be installed in both metal and non-metal containers, with no harm to the human body or the environment.
Technical parameters
Working frequency: 100MHz
Measuring range: cable type: 0-35m rod type, coaxial type: 0-6m
Repeatability: ±3mm
Resolution: 1mm
Sampling: echo sampling 54 times/s
Response speed:>0.2S (depending on the specific use)
Accuracy:<0.1%
Output current signal: 4-20mA
Communication interface: HART communication protocol
Process connection: G1-1/2,G3/4 Flange: DN50, DN80, DN100, DN150
Process pressure:-1 ~ 60bar
Power supply: 24VDC(± 10%) Ripple voltage: 1Vpp
Power consumption: max22.5mA
Environmental conditions: temperature: -40 ℃ ~ +250 ℃
Enclosure protection class: IP68
Explosion-proof grade: EXiaIICT6
Cable entry: M20 × 1.5 (cable diameter 5~9mm)
Selection table:
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ZDW921
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Selection code
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Description
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Grade
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A
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High precision, high stability
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B
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High stability
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Explosion-proof grade
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P
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Standard type (without explosion-proof)
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I
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Intrinsic safety type (Ex ia II CT6).
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C
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Intrinsic safety type + marine license (Ex ia II CT6).
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G
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Intrinsic safety type + explosion-proof type (Ex d[ia] II CT6).
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Detection component type/material
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A
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Cable type/Φ6mm/stainless steel 316L/PTFE
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B
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Rod type/Φ6mm/stainless steel 316L/PTFE
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C
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cabled/stainless steel 316L/ceramic
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D
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Rod/stainless steel 316L/ceramic
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E
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Double cable/Φ4mm/stainless steel 316L/PTFE
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F
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Double rod/Φ8mm/stainless steel 316L/PTFE
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G
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Coaxial type / stainless steel 316L.
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T1
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Special requirements
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Electronic components
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A
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4 ~ 20mA two-wire system
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B
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4~20mAHART two-wire system
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C
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4 ~ 20mA/24VDC220V four-wire system
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D
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4 ~ 20mA/24VDC220V/HART four-wire system
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Process Connection
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GP
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Thread G1/₂ A
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KP
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Thread G2A
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NP
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Thread 1/₂ NPT
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T2
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Special requirements
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Seal/Process Temperature
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A
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Viton fluorine rubber/(-30~150)℃
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B
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Kalrez perfluorinated rubber/(-40~150)℃
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T3
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Special requirements
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Enclosure/Degree of Protection
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A
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Aluminum/IP67
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D
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Aluminum two-chamber/IP67
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G
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Stainless Steel 316L/IP67
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Cable entry
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M
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M20 × 1.5
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N
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/NPT
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Field Display
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A
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Have
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X
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None
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Selection example
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ZDW921 BPAA GP BDNX
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Ordering Method
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C D W the selection personnel can ignore it
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