Anderson Negele’s potentiometric level transmitters deliver continuous, hygienic level measurement in demanding sanitary applications—especially where foam, pasty/adhesive media, shallow vessels, or temperature swings can challenge other technologies. The portfolio centers on the NSL-F (with optional IO Link + 4–20 mA) and the compact NSL-M two wire RTD style transmitter, both designed for metallic vessels up to ~3 m (10 ft) and available with 3 A/EHEDG compliant CLEANadapt process connections.
Unlike hydrostatic sensors, these potentiometric transmitters excel in viscous and foamy products and support pressurized tanks and fast level changes thanks to sub 100 ms sampling (model dependent).
Key Benefits
1.) Accurate in “difficult” media
- Designed to measure reliably with foam, pasty/adhesive media, and during rapid filling/dispensing, maintaining stable readings where traditional systems may drift.
- Typical response time < 100 ms enables tight control of dosing and filler bowls.
2.) Hygienic by Design
- CLEANadapt hygienic installation with FDA‑compliant wetted materials; versions conform to 3‑A and (on variants) EHEDG requirements.
- Built for CIP/SIP up to ~143 °C (289 °F) for defined durations; IP69K options for washdown environments.
3) Minimal or No Re‑tuning
- Potentiometric principle does not require re‑adjustment when changing media (within specified conductivity), reducing setup time and error risk.
4.) Flexible Outputs & Configuration
- Flex‑Hybrid (NSL‑F): IO‑Link + 4–20 mA in parallel; configurable via on‑sensor display or PC (MPI‑200).
- NSL‑M: simple 2‑wire 4–20 mA with optional PC programming; compact form factor ideal for crowded tank tops.
5.) Installation Versatility
- Top, side, or bottom mount; factory‑bent rods and remote head versions available on NSL‑F to accommodate vessel geometry and visibility needs.
Common Uses
Food & Beverage / Brewing
- Filler bowls, balance tanks, syrup/ingredient vessels, and pressurized small tanks where level changes are fast and foam is present.
Dairy
- Cream, yogurt, whey, and milk vessels requiring hygienic, continuous measurement that’s insensitive to adhesion and foam.
Pharmaceutical & Life Sciences
- Sanitizable continuous level for buffer/media tanks in metallic vessels with hygienic connections and CIP/SIP compatibility; IO‑Link aids diagnostics/integration.
Shallow & Pressurized Tanks
- Applications where hydrostatic level is less effective (e.g., shallow vessels, frequent temp swings) benefit from potentiometric sensing accuracy and speed.
Summary
Anderson‑Negele potentiometric level transmitters—NSL‑F and NSL‑M—offer fast, precise, and hygienic continuous level measurement when media are foamy, sticky, or fast‑moving, and where small or pressurized vessels are common. With CLEANadapt hygienic fittings, CIP/SIP readiness, IP69K options, and flexible outputs (IO‑Link + 4–20 mA or 2‑wire analog), they integrate easily into sanitary automation while minimizing setup and maintenance. If your process demands repeatable level control under challenging conditions, these potentiometric transmitters are a proven fit
