Xi 'an Qinwei Instrument Factory (General Partnership Enterprise)
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability | 100PCS/Month |
| Delivery Time | 5-8 work days |
| Packaging Details | Carton |
| Output Signal | 4-20 mA, HART, Modbus |
| Material | Stainless Steel+PTFE+Quartz glass |
| Material Of Wetted Parts | Stainless steel 316L |
| Temperature Range | -40℃~+120℃ |
| Measuring Frequency | 80GHz |
| Precision | <0.1% |
| After Service | Twelve months |
| Enclosure Protection | IP67 or IP68 |
| Explosion Proof Grade | Exia llC T6 Gb |
| Output | RS485/MODBUS; 4…20mA/HART |
| Brand Name | QINWEIYB |
| Model Number | QWRD80G613 |
| Certification | Explosion-proof certificate ，Safety certificate |
| Place of Origin | China |
View Detail Information
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Supply Ability | 100PCS/Month |
| Delivery Time | 5-8 work days | Packaging Details | Carton |
| Output Signal | 4-20 mA, HART, Modbus | Material | Stainless Steel+PTFE+Quartz glass |
| Material Of Wetted Parts | Stainless steel 316L | Temperature Range | -40℃~+120℃ |
| Measuring Frequency | 80GHz | Precision | <0.1% |
| After Service | Twelve months | Enclosure Protection | IP67 or IP68 |
| Explosion Proof Grade | Exia llC T6 Gb | Output | RS485/MODBUS; 4…20mA/HART |
| Brand Name | QINWEIYB | Model Number | QWRD80G613 |
| Certification | Explosion-proof certificate ，Safety certificate | Place of Origin | China |
| High Light | Rod Antenna Radar Level Gauge ，Radar Level Gauge Low Dielectric Constant ，Rod Antenna Radar Level Transmitter | ||
Low Dielectric Constant Foam And Steam Interference Resistant Rod Antenna Radar Level Gauge
The rod antenna radar level gauge, also a variant of the "cable" or "guided wave radar" (but note that the principles are different), has the most notable feature that it uses a metal rod as the antenna and/or wave propagation conductor.
Scenario: Small reaction vessels, metering tanks, bypass pipes, ship cabins, and other containers with very small installation openings.
Advantage: A thin rod (such as Φ16mm, Φ24mm) can easily be inserted into a small diameter flange, while horn antennas require a larger installation space.
Scenario: Media prone to crystallization, condensation, and high viscosity (such as asphalt, molten salt, syrup, polymers).
Advantage: The smooth metal rod surface is less likely to accumulate material. Even if there is a small amount of adhesion, its impact on rod-type (especially guided wave) measurements is much smaller than that on horn antenna signals.
Scenario: Liquids with very low dielectric constants such as liquefied petroleum gas (LPG), and certain solvents.
Advantage (especially guided wave type): Electromagnetic waves propagate along the rod in a directional manner, with concentrated energy, effectively guiding weak liquid surface reflection signals back, making it the preferred solution for measuring low dielectric constant media.
Scenario: Boiling liquids, vigorously stirred reactors, and conditions with thick foam.
Advantage (especially guided wave type): The rod directly passes through the foam and steam layers, guiding the wave directly to the true liquid surface, with minimal interference from the gas phase, ensuring very stable measurements.
Scenario: Oil-water interfaces, stratification measurement of two immiscible liquids.
Advantage (guided wave type): Multiple echoes from different dielectric constant interfaces can be clearly detected, enabling reliable interface measurement.
| Characteristics | Rod Antenna Radar (mainly guided wave type) | Horn Antenna Radar |
|---|---|---|
| Measurement Principle | Time-domain reflection / can also be non-contact radar | Non-contact FMCW or pulse radar |
| Contact with Medium | Yes (guided wave type) / No (non-contact type) | No |
| Signal Propagation | Propagates along the rod, energy concentrated | Free propagation in space |
| Low Dielectric Constant Medium | Excellent, preferred solution | Difficult, requires high frequency and large antenna |
| Resistance to Foam/Vapor Interference | Very strong | Strong (higher frequency radar is better) |
| Installation Space Requirements | Small | Larger (considering the size of the horn) |
| Interface Measurement | Possible | Difficult |
| Typical Applications | LPG, light oil products, chemical solvents, reaction vessels, viscous media | Large storage tanks, cement silos, water treatment, most general liquid level measurements |
When you encounter challenges such as small openings, easy adhesion, low dielectric constant, strong foam, or the need for interface measurement, it is the most worthy choice to consider. It sacrifices the convenience of complete non-contact, but in return, it offers unparalleled measurement reliability and stability under harsh conditions. Correctly understanding its principle and applicable boundaries is the key to successful application.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
Establishe
Total Annual:
5 million-10 million
Employee Number:
500~800
Ecer Certification：
Verified Supplier
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