PTFE-Encased. Acid-Resistant. Flow-Through Bathymetry. The EchoLogger ETF 400S.
The EchoLogger ETF 400S is a professional-grade single-frequency echo sounder engineered for depth measurement in chemically aggressive environments. All externally exposed components — including the transducer body and cable — are constructed from PTFE (Teflon), delivering full compatibility with low-pH conditions down to approximately pH 2 and resistance to aggressive acids under normal operating temperatures. Designed as a flow-through sensor, the ETF 400S integrates directly into pipelines, tanks, and industrial water systems where standard echo sounders cannot operate, providing reliable, continuous depth and level data in environments that would degrade conventional sensor materials.
Key Specifications
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Full PTFE (Teflon) Construction — All externally exposed parts, including the cable, are PTFE-encased for complete chemical resistance in corrosive liquid environments
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Low-pH Compatibility — Rated for operation in conditions down to approximately pH 2, including aggressive acids under normal temperature
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Flow-Through Design — Engineered for direct integration into pipelines, tanks, and industrial fluid systems for continuous depth and level monitoring
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Single-Frequency Operation — Optimized acoustic frequency for reliable bottom detection in chemically complex liquid media
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Industrial-Grade Durability — Built for sustained deployment in process environments where chemical exposure, moisture, and contamination are constant factors
Full Specifications
| Model |
EchoLogger ETF 400S |
| Type |
Single-frequency echo sounder |
| Design |
Flow-through |
| Wetted Materials |
PTFE (Teflon) — all externally exposed parts including cable |
| Chemical Compatibility |
Low-pH environments (~pH 2); aggressive acids at normal temperature |
| Vendor |
SPH Engineering / EchoLogger |
| SKU |
IS-EL-ETF-400S |
In the Box
- EchoLogger ETF 400S flow-through echo sounder × 1
- PTFE-jacketed cable × 1