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High-frequency (26 GHz) two-wire, loop-powered non-contacting radar level transmitter with 4-20 mA HART output, up to 115 ft (35 m) range and +/-3 mm reference accuracy for liquids, slurries and solids.
The Rosemount 5402 is Emerson's high-frequency (~26 GHz) member of the Rosemount 5400 Series two-wire non-contacting radar level transmitters. It measures the distance to a liquid, slurry or solids surface using short radar pulses reflected from the product; because the microwave signal never touches the medium, the reading is virtually unaffected by density, dielectric, temperature, pressure or vapour changes, and there are no moving parts to wear or recalibrate.
The 26 GHz version produces a narrow radar beam, which makes the 5402 the preferred choice for a broad range of applications and ideal for mounting on valves, taller nozzles, bridles/stilling wells and smaller tank openings. Emerson's dual-port technology and circular polarization suppress echoes from tank walls and internal obstructions, improving reliability and installation flexibility. At reference conditions the 5402 delivers +/-3 mm accuracy with 1 mm repeatability, updates once per second, and reaches up to 115 ft (35 m) from the flange.
This particular unit is order code 5402AH1NA33PVCA: high-frequency electronics, polyurethane-covered aluminium dual-compartment housing, 4-20 mA HART (Revision 5) output, 1/2-14 NPT conduit entries, a stainless-steel cone antenna on a raised-face flange, and a Viton (fluoroelastomer) process O-ring. It is loop-powered at 16-42.4 Vdc, carries a Type 4X / IP66 / IP67 enclosure rating, and shipped from Rosemount Singapore in March 2018 with an integral 5-digit LCD display (option M1).
The 5400 Series is a proven, now-legacy platform (superseded in Emerson's catalogue by the Rosemount 5408) and remains widely used for storage and buffer tanks, reactor and mixing vessels, and silo/solids level. Full specifications are taken verbatim from the official Rosemount 5400 Product Data Sheet (00813-0100-4026).
| Attribute | Value |
|---|---|
| General | |
| Measurement principle | Pulsed, non-contacting radar |
| Performance & accuracy | |
| Frequency (5402) | High frequency, 26 GHz |
| Reference accuracy (5402) | +/- 0.1 in. (+/- 3 mm) |
| Repeatability | +/- 0.04 in. (+/- 1 mm) at 16.4 ft (5 m) distance |
| Resolution | 0.04 in. (1 mm) |
| Update interval | One second |
| Max measuring range from flange | 115 ft (35 m) |
| Beam angle (5402, 4-in. cone) | 9 degrees (2-in. cone 19 deg, 3-in. cone 14 deg, parabolic 4.5 deg) |
| Process conditions & connection | |
| Minimum dielectric constant | er = 1.4 |
| Process connection | Flange (ASME B16.5 / EN 1092-1 / JIS B2220), Tri Clamp, NPT thread or welded connection |
| Construction & materials | |
| Process temperature (SST cone antenna, Viton O-ring) | -4 to 302 degF (-20 to 150 degC), limited by Viton O-ring |
| Max process pressure (SST cone antenna) | 232 psig (16 bar) |
| Antenna / wetted materials | 316/316L SST (EN 1.4404) or alloy 400 / alloy C-276; PTFE fluoropolymer; process O-ring |
| Housing material | Polyurethane-covered aluminium (dual compartment) or SST grade CF8M (ASTM A743) |
| Ingress protection | Type 4X, IP66, IP67 |
| Weight (transmitter head, aluminium) | 4.4 lb (2 kg); SST head 10.8 lb (4.9 kg) |
| Power & output | |
| Output / communication | Two-wire 4-20 mA with HART Revision 5 |
| Supply voltage (HART) | 16-42.4 Vdc (16-30 Vdc IS; 20-42.4 Vdc explosion-proof/flameproof) |
| Microwave output power | < 1 mW |
| Internal power consumption | < 50 mW in normal operation |
| Ambient temperature (HART) | -40 to 176 degF (-40 to 80 degC) non-hazardous; -58 to 158 degF (-50 to 70 degC) IS/Ex ia |
| Integral display | 5-digit integral LCD display (option M1); readable -4 to 158 degF (-20 to 70 degC) |
| Approvals & safety | |
| Hazardous-area approvals (series options) | ATEX (flameproof/IS/FISCO/Type N), FM (XP/IS/FISCO), IECEx (flameproof/IS/FISCO/Type N), CSA. NOTE: this unit is ordered NA = No product certificates. |
| Model code | Description | Measuring range |
|---|---|---|
| 5402 | Rosemount 5402 - High-frequency (~26 GHz) [THIS UNIT] ★Narrow beam, +/-3 mm accuracy; preferred for most liquids, valves/nozzles and solids. This unit: order code 5402AH1NA33PVCA with SST cone antenna. | Up to 115 ft (35 m) |
| 5401 | Rosemount 5401 - Low-frequency (~6 GHz)For tough turbulence, foam, condensation and build-up; +/-10 mm accuracy. | Up to 115 ft (35 m) |
| Cone antenna | Cone antenna (2-8 in.) - fitted on this unitBuild-up resistant; can be recessed in smooth nozzles and used in stilling wells; 4-in. size also for solids. | 2-in. / 3-in. / 4-in. / 6-in. / 8-in. |
| Process seal antenna | Process seal antenna (2-4 in.)PTFE process seal; ideal for small tanks, corrosive service and heavy condensation/build-up. | Up to 115 ft (35 m) |
| Parabolic antenna (8A) | Parabolic antenna - solids onlyNarrowest 4.5 deg beam for long-range solids/silo measurement; process temperature to 392 degF (200 degC). | Up to 105 ft (32 m) on solids (er 2.0) |
All listed models can be supplied with your required certification, output protocol and process connection — contact us or request a quote for exact model-code selection.
The 5401 is the low-frequency (~6 GHz) model, best for tough turbulence, foam, condensation and heavy build-up, with +/-10 mm accuracy. The 5402 is the high-frequency (~26 GHz) model with a narrower beam and higher +/-3 mm accuracy, the preferred choice for most applications and for valves/nozzles and solids. This unit is a 5402.
This is a Rosemount 5402, order code 5402AH1NA33PVCA (high-frequency 26 GHz, aluminium housing, 4-20 mA HART, SST cone antenna on flange, Viton O-ring), tag LT-01, manufactured 2018 in Singapore. The 5400 Series is a legacy platform (Emerson successor: Rosemount 5408). For an accurate Barmaan proforma please confirm the exact flange size/rating/standard, antenna type and length, required hazardous-area certification (this unit shipped as NA / no Ex certificate), and target measuring range and process conditions. Contact Barmaan for availability, lead time and pricing.
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Endress+HauserLevel Sensors & Transmitters
2 units in stockEndress+HauserLevel Sensors & Transmitters
2 units in stockEndress+HauserLevel Sensors & Transmitters
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