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Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Specifications
MOQ :
1
Delivery Time :
Negotiable
Payment Terms :
T/T,XT,ALIPAY
Ambient Temperature :
-
Supply Ability :
100pcs per month
Power Supply :
1
Model Number :
TW251-G2BE5S00
Brand Name :
Endress+Hauser
Certifications :
S
Price :
Negotiable
Electrical Rating :
G
Certification :
ATEX
Place of Origin :
IT
Packaging Details :
carton
Description
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Endress+Hauser TW251-G2BE5S00 Levelflex TDR level transmitter. 2-wire 4-20mA HART, single rod probe, -1...40 bar, -196...+400°C, for liquids in tanks & stilling wells.

Product Overview

The Endress+Hauser TW251-G2BE5S00​ is a 2-wire guided wave radar (TDR/TDR – Time Domain Reflectometry) level transmitter​ from the Levelflex TW251 series, designed for continuous level measurement of liquids, pastes, and interface layers​ in storage tanks, process vessels, and stilling wells. This variant features a single rigid/flexible rod probe, 4-20mA HART output, and is suitable for applications with turbulent surfaces, foam, or changing dielectric constants​ where non-contact radar may struggle. It offers high accuracy (±3 mm) and is unaffected by changing media properties, dust, or vapor.

Technical Specifications (Measurement & Electrical)

Parameter
Specification
Model / Order Code​
TW251-G2BE5S00​
Product Family​
Levelflex TW251 (Guided Wave Radar / TDR)
Measured Variable​
Level (Distance, Volume, Interface — with dual probe or known dielectric)
Measuring Principle​
TDR (Time Domain Reflectometry) — Guided Microwave Pulse​
Measuring Range (Probe Dependent)​
Up to 20 m​ (flexible rope) / 6 m​ (rigid rod)
Accuracy​
±3 mm​ (probe + electronics)
Dead Zone (Top/Bottom)​
Probe-specific (typically 50–300 mm top dead zone)
Output Signal​
4…20 mA​ with HART 7​ (2-wire loop powered)
Supply Voltage​
18…35 V DC​ (loop powered)

Technical Specifications (Mechanical & Process)

Parameter
Specification
Probe Type​
Single Rod / Single Rope (configured in suffix G2BE5S00 — verify exact probe length from full code)​
Process Connection​
Flange / Thread (DN25…DN100 / 1"…4" — per order detail)
Max. Process Pressure​
-1 … +40 bar​ (gauge)
Process Temperature​
-196 … +400 °C​ (depends on probe & seal version)
Wetted Parts Material​
316L (1.4404) / Hastelloy C-276 / Tantalum​ (probe-specific)
Housing Material​
Aluminum (coated) / Stainless Steel (optional)
Protection Rating​
IP66/IP67 / NEMA 4X​ (Transmitter Housing)
Approvals / Area​
Non-hazardous / optionally Ex d / Ex i (check suffix)

Key Features

  • TDR Technology — Immune to Process Conditions:​ Unaffected by vapor, foam, turbulence, dust, or dielectric constant changes down to εᵣ > 1.4 — outperforms free-space radar in challenging tank conditions.
  • No Moving Parts:​ Solid-state measurement with no mechanical wear, ideal for sticky, coating, or crystallizing media (with appropriate probe choice — coated or segmented rods available).
  • HART 7 Communication:​ Full digital communication over the 4-20mA loop for remote configuration, diagnostics, and false-echo suppression (mapping tank obstructions).
  • Flexible Probe Options:​ Supports rigid rods (short tanks), flexible ropes with weight (deep tanks), and coaxial/cage probes (high turbulence or low dielectric).

Applications

  • Storage Tank Gauging:​ Continuous level of fuels, solvents, chemicals in above/below-ground tanks.
  • Process Vessels:​ Level in reactors, separators, and boiling pans — including under vacuum or high pressure.
  • Interface Measurement:​ Oil/water or solvent/aqueous layer detection (requires known dielectric contrast and dual-probe or single-probe + reference).
  • Problematic Media:​ Foaming liquids, turbulent surfaces, low-dielectric hydrocarbons where non-contact radar fails.
Note: The exact probe length, process connection (flange rating/size), and seal material are defined by the full 5th–8th character group in the order code (here "G2BE5S00" represents a typical TW251 base configuration with 4-20mA HART and standard electronics). Always verify the complete type code for probe specification.

Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Frequently Ask & Questions
Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

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Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod

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Product Detail
MOQ :
1
Delivery Time :
Negotiable
Payment Terms :
T/T,XT,ALIPAY
Ambient Temperature :
-
Supply Ability :
100pcs per month
Power Supply :
1
Contact Supplier
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod
Endress+Hauser TW251-G2BE5S00 | Levelflex TDR Level Transmitter, 4-20mA HART, Single Rod

Achievers Automation Limited

Verified Supplier
1 Years
hong kong
Since 2012
Business Type :
Agent, Importer, Trading Company
Main Products :
Allen Bradley PLC Controllers, Pepperl Fuchs Safety Barrier, E&H Instruments
Total Annual :
2000000-3000000
Employee Number :
>50
Certification Level :
Verified Supplier
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