High-Temperature Radar Level Transmitter (up to 1200°C, 10 MPa) | SRL630-HT
The SRL630-HT FMCW Radar Level Meter is the ultimate non-contact measurement solution engineered specifically for extreme industrial environments where standard sensors fail. Operating at a high frequency of 76–81 GHz, it utilizes a proprietary millimeter-wave RF chip to deliver unparalleled signal penetration through heavy dust, steam, and agitated liquid surfaces.
Equipped with specialized quartz isolation flanges and high-temperature buffer devices, the SRL630 confidently handles process temperatures up to 1200°C and pressures up to 10 MPa (100 bar).
Key Highlights:
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Extreme Process Limits: Rated up to 1200°C and 10 MPa process pressure.
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Highly Focused Signal: Narrowest 3° beam angle avoids obstacles, agitator blades, and narrow nozzle interference.
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Metrology-Grade Precision: Stable, repeatable ±1mm measurement accuracy.
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Zero Maintenance: Non-contact lens antenna with anti-corrosion, anti-condensation, and anti-hanging PTFE/Teflon material options.
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Wireless On-Site Setup: Fully configurable via integrated Bluetooth on your mobile phone.
Description
In heavy industries like steelmaking, petrochemical processing, and energy generation, tracking material levels is a constant battle against physical destruction. Standard radar sensors melt, warp, or fail when exposed to blast furnaces or high-pressure reactors. The SRL630-HT 80GHz FMCW Radar Level Transmitter is structurally engineered to survive and operate precisely where conventional sensors cannot.
How It Survives 1200°C Heat
The SRL630-HT does not expose its sensitive electronics directly to the process heat. Instead, it achieves high-temperature insulation by firing its narrow 80GHz signal directly through thick quartz glass. When paired with its specialized high-temperature isolation device and quartz isolation flange, the transmitter safely monitors molten materials and glowing steel up to 1200°C while the core electronics remain safely isolated outside the heat zone.
How It Withstands 10 MPa (100 bar) Pressure
High-pressure chemical reactors require absolute structural integrity to prevent catastrophic blowouts. The SRL630-HT utilizes specially designed shaped glass capable of withstanding up to 10 MPa of process pressure at process temperatures of 200°C.
Impervious to Corrosive Vapors
For extreme chemical applications combining pressure, heat, and highly corrosive vapor-liquids, the SRL630-HT features an integral lens with a Teflon (PTFE) sealing surface. This structural design ensures that aggressive corrosive gases and liquids can never penetrate or degrade the internal equipment.
The 80GHz FMCW Advantage in Extreme Conditions
The true power of the SRL630-HT lies in combining these physical extreme-environment barriers with an advanced 80GHz continuous frequency modulation wave. The ultra-focused 3° beam angle easily penetrates the quartz glass isolation barriers and slices right through the thick smoke, splashing, and violent turbulence typical of extreme-environment vessels, delivering metrology-grade accuracy of ±1mm.
Features
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Proprietary RF Chip Architecture: Built on a self-developed millimeter-wave radio frequency chip to achieve a exceptionally compact RF structure with an enhanced signal-to-noise ratio.
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Virtually Unaffected by Fluctuations: Advanced digital algorithms ignore rapid level fluctuations, surface splashing, and eddy currents from heavy stirring.
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High-End Antenna Options: Choose between spherical PTFE lens antennas, fully anti-corrosive PTFE flanges, or high-temperature quartz isolation assemblies.
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Smart Bluetooth Maintenance: Easily configure, calibrate, and troubleshoot the sensor at safe ground level using your smartphone’s Bluetooth connection, eliminating the need to climb tall silos or open hazardous enclosures.
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Low Dielectric Measurement: High-frequency, high-gain signal reliably tracks materials with low dielectric constants ($epsilon_r ge 1.5$).
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Explosion-Proof & IP67 Rated: Enclosed in a rugged IP67-rated aluminum or stainless steel case, certified under ExdiaIICT6 for hazardous, explosive environments.
Specification
| Parameter | Technical Specification |
| Operating Frequency |
76 GHz ~ 81 GHz (FMCW) |
| Measuring Range |
0.08m to 120m (Options: 10m / 20m / 30m / 60m / 120m) |
| Measurement Accuracy |
±1 mm |
| Beam Angle |
3° or 8° |
| Process Temperature |
Up to 1200°C (Options: -40 to 85°C / 200°C / 350°C / 1000°C / 1200°C) |
| Process Pressure |
Up to 10 MPa (100 bar) (Options: -0.1 to 0.6 / 1.0 / 1.6 / 2.0 / 2.5 / 10 MPa) |
| Blind Area |
3 cm (Standard) / 8 cm (Antiseptic version) |
| Output / Communication |
4-20mA / HART / Modbus |
| On-Site Programming |
128 × 64 dot matrix display with 4 buttons / PC Software / Bluetooth |
| Enclosure Material |
Aluminum alloy or Stainless steel |
| Antenna Design |
Lens Antenna (Optional PTFE Shield, quartz isolation flange, thermal paste) |
| Explosion-Proof Rating |
ExdiaIICT6 |
| Protection Class |
IP67 |
| Process Connection |
Thread (G1-1/2, G3-1/2) or Flange (DN50 to DN200) |
FAQ
Q: Can this sensor be used on highly corrosive chemicals like hot acids?
A: Yes. The SRL630-HT is available with a fully anti-corrosive, solid PTFE (Teflon) lens and process connection. This ensures that aggressive chemical vapors or splashes will not degrade or build up on the antenna surface.
Q: How does the SRL630-HT withstand extreme process temperatures of up to 1200°C?
A: To operate at extreme temperatures, the sensor uses a proprietary quartz isolation flange or a dedicated high-temperature cooling/isolation assembly. This physical barrier blocks extreme furnace heat while allowing the 80GHz radar signal to pass through unhindered, keeping the transmitter housing at a safe operating temperature.
Q: Is this radar sensor suitable for tanks with active agitator or mixer blades?
A: Absolutely. Thanks to its ultra-narrow 3° beam angle and mature tracking algorithms, the radar beam can be targeted precisely between the mixer blades and the tank wall, avoiding false reflections caused by moving agitators.
Q: Do I need specialized tools to program the sensor?
A: No. You can configure the sensor directly from its physical 4-button interface, connect a PC, or simply use the built-in Bluetooth chip to calibrate and run diagnostics directly from your smartphone.



