Chemical Compatibility

Radar / Ultrasonic / Hydrostatic Level Transmitter — Water/Aqueous

Strong evidence

Named chemicals

potable waterriver watersea waterdemineralized watertreated waterwater/glycol solutionssump and clarifier contents

What LibertyCES's vendor documentation shows

Signet's Application Suitability Matrix is the decision content and it is unusually crisp: hydrostatic (2250) and float switch (2285) are the only two technologies rated '+' for both dense surface foam and high surface agitation, while 2260/2270/2284 ultrasonic are rated '-' because foam and turbulence disrupt the acoustic echo. Only ultrasonic and radar are non-contacting. The 2280 Tuning Fork is the broadest-compatibility point-level option — explicitly independent of conductivity, dielectric constant, viscosity, pressure and temperature. The 2290 radar is the documented exception to the anti-foam pattern (works with fumes, condensation and light foam), which is the conclusion the LibertyCES bulk fertilizer job reached independently when 80 GHz radar replaced failing ultrasonic in dense chemical vapor. Two hard limits: the 2281 needs >10 µS/cm so it will not work in DI/UPW, and the 2285 is positioned only for tap water, river water and sump shafts.

Materials documented for this service

PVDF and ceramic (2250)
PP/EPDM or PVDF/FKM (2260/2270)
Stainless DIN 1.4571 (2280)
PPS (2284)
PP body with PVC cable (2285)
SS316Ti horn with PP/PTFE enclosure (2290)
316SS rod/cable with special-order coated versions (2291)

Products cited for this service

GF Signet 2250 Hydrostatic (0-10 or 0-50 psig, PVDF/ceramic/FKM, submersible)2260 Ultrasonic (0.2-4m to 0.45-15m, PP/EPDM or PVDF/FKM, 25° down to 5° beam by range, 32-point linearization, secondary lightning protection, ATEX II 1 G EEx ia IIB T6 option)2270 Ultrasonic (compact 2-wire, PP or PVDF 'best chemical resistance where concentrated chemical shall be detected')2280 Tuning Fork (stainless DIN 1.4571, to 130°C/266°F, min density ≥0.7 kg/dm³, max viscosity ≤10,000 cSt, ATEX and WHG approved)2281 Conductive Multipoint (requires >10 µS/cm, up to 4 relays)2282 Guided Float2284 Ultrasonic Gap (PPS body)2285 Float Switch (PP body, PVC cable, mercury-free)2290 Unguided Radar (25GHz K-band, 0.2-18m, 19° beam, SS316Ti horn, tank mapping)2291 Guided Wave Radar/TDR (cable 6m or rod 2m, 316SS, min εr ≥1.9)

Sourced to

data/vendor-sources/gf-signet-instrumentation-catalog.md
data/case-studies/radar-level-fertilizer.md

Every material and product claim on this page traces to the vendor documentation listed above. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.

Request a spec review →Back to Radar / Ultrasonic / Hydrostatic Level Transmitter