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LA_HN_LA_HP

LA_HN_LA_HP

LA_HN_LA_HP

Product catalog summary
Features:
  • Constructed with Hastelloy for excellent chemical compatibility.
  • Proprietary laser welding ensures durability in demanding environments.
  • Electric resistance-tape sensor provides stable output with no moving parts.
  • Easy installation with tank-top mounting.
  • Virtually maintenance-free and intrinsically safe.
  • Combines level and temperature measurement in a single sensor.
  • Operates over a wide temperature range.
Description:

The MetritapeTM Hastelloy Level Sensors LA-HN and LA-HP are designed for measuring petroleum products and various chemicals at temperatures up to 107°C (225°F). Available in lengths from 1 to 36 meters (3 to 120 feet), these sensors feature a high-resolution helix and gold-on-gold electric contacts for precise measurement. The LA-HN model is protected by a Nylon 12 channel, while the LA-HP uses a polypropylene channel. Optional temperature detection with up to three RTD detectors is available.

Operation Principle:

The sensor operates by compressing the outer envelope jacket under hydrostatic pressure, causing the gold-plated nichrome wire helix to contact the stainless steel base strip. This contact measures the resistance, indicating the liquid level.

Installation:

Installation requires a vented stillpipe with a minimum interior diameter of 40 mm. The sensor length should match the stillpipe length, with the stillpipe extending 45 mm beyond the sensor.

Technical Data:
  • Sensor Length: 1 to 36 meters or 3 to 120 feet.
  • Temperature Range: -15° to 107°C (5° to 225°F).
  • Wetted Materials: Hastelloy C276, 304 Stainless Steel, Nylon 12 (LA-HN), Polypropylene (LA-HP).
  • Helix Resolution: 5 mm (1/4 inch).
  • Resistance Gradient: 1000Ω/meter (305Ω/ft), ± 1.5%.
  • Approvals: Intrinsically safe with approved zener barrier, FM: Class I, Division 1, Groups C, D.
Disclaimer:

The information is provided in good faith without warranty. Users are responsible for determining the suitability of the product for their specific needs.

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Catalog excerpts

LA_HN_LA_HP-1

Metritape™ Hastelloy Level Sensors LA-HN and LA-HP • Hastelloy construction provides excellent chemical compatibility • Proprietary laser welding process delivers years of service in demanding environments • All electric resistance-tape sensor for stable output; no moving parts to stick or break • Tank top mounted for easy installation • Virtually maintenance-free • Intrinsically safe • Can combine level and temperature capability in a single sensor • Wide operating temperature range The LA-HN and LA-HP level sensors are used to gauge petroleum products and many chemicals with The LA-HN and LA-HP level sensors are available in overall lengths of 1 to 36 meters (3 to 120 feet). Both models have a high resolution helix and gold-on-gold electric contacts for 5 mm (1/4") turns resolution and long-term contact stability. The LA-HN is enclosed in a Nylon 12 channel for physical protection (LA-HP is enclosed in a polypropylene channel). The filter assembly protects the sensor from moisture and contaminants and provides pressure equalization. Optional temperature detection can be included in either model with up to three (3) RTD detectors mounted within the sensor envelope at specified Models LA-HN and LA-HP may not be suited for use in some chemicals, caustics, high vapor-pressure materials, or under cryogenic or high level nuclear radiation conditions. Check factory for details.

 Open the catalog to page 1
LA_HN_LA_HP-2

Metritape™ Hastelloy Level Sensors LA-HN and LA-HP Operation Principle: outer envelope jacket (1), is pressure causing the gold plated nichrome wire helix to contact the stainless steel base strip indicates the length of active or tance from sensor top to liquid The LA-HN and LA-HP sensors are installed into a customer supplied, vented stillpipe with a minimum interior diameter of 40 mm (1.55 inches). Specific stillpipe construction may vary with application. To Specify Length - (1) Select stillpipe in feet or meters; (2) Specify LA-HN or LA-HP sensor of same length as stillpipe; (3) LS = LP...

 Open the catalog to page 2
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