A meter for every density
Eight measurement methods across ten product series. Pick by physics, by application, or browse the full catalog.
Three quick paths to the right principle
By medium
Abrasive bubbly slurry → ultrasonic acoustic impedance (PS7000). Clean liquid → ultrasonic sound velocity, tuning fork or Coriolis. Opaque water-bearing slurry → microwave. Multi-component analysis → spectroscopic.
By accuracy
Lab-grade ±0.0005 g/cm³ → ultrasonic sound velocity (PS7020). Process-grade ±0.001 g/cm³ → tuning fork or Coriolis. Field-grade ±1% FS → ultrasonic slurry, microwave, gamma. Tank gauging → DP.
By constraint
No drilling / hot tapping → ultrasonic acoustic attenuation clamp-on (PS7010) or gamma clamp-on (PS7500). Sanitary CIP/SIP → ultrasonic sound velocity (PS7020) or Coriolis with Tri-Clamp. Hazardous area → ExdⅡCT6Gb available across the catalog.
Ultrasonic
Sound waves through the medium — three sub-methods covering the full slurry-to-clean-liquid range. Acoustic impedance (PS7000) handles abrasive bubbly slurries; acoustic attenuation (PS7010) supports clamp-on no-cut installation; sound velocity (PS7020) delivers ±0.0005 g/cm³ on clean liquids.
Acoustic impedance
1 models
Acoustic attenuation
1 modelsSound velocity
1 models
Tuning fork
Piezo-driven fork resonating in the liquid — frequency tracks density, with PT1000 temperature compensation. No moving mechanical parts, no electrodes, no consumables. Six installation accessories cover pipeline, tank-top and side-mount applications.
Coriolis
Coriolis-effect vibrating tube — pure-frequency density measurement, no zero or span drift, long-term stable. Two body styles: triangular bent tube (PS7210) for general industrial use, straight tube (PS7220) for high-viscosity (≤ 20000 cP) or solids-laden liquids.
Optical
Two distinct optical methods. Spectroscopic (PS7100): UV-Vis-NIR LED array + Beer-Lambert absorption, multi-component identification, no reagents. Refractive index (PS7110): sapphire prism + CCD critical-angle detection, immune to color, turbidity, bubbles and particles.
Spectroscopic (UV-Vis-NIR)
1 modelsRefractive index
1 modelsMicrowave
Microwave phase-shift transmission (PS7600) — water's high dielectric constant (ε ≈ 80) makes phase shift the most sensitive water-content signal. Pt-100 real-time temperature compensation. Ideal for opaque slurries: FGD, coal washing, ore slurry, sludge.
Differential pressure
Differential pressure across a known column height (PS7300) — ρ = ΔP / (g·H). Pure physical measurement, no moving parts, ≤ ±0.2%/12 months drift. Three installation styles (straight insert / bent insert / side-mount) cover tank-top, in-tank and tank-wall layouts.
Gamma (Na-22)
Sodium-22 gamma source at exempt activity (PS7500, < 1000 KBq) — clamp-on, non-contact, suits any pipe shape and the toughest conditions (high temperature, high pressure, abrasive, corrosive). The exempt activity level means no radiation licensing is required — a major operational advantage over Cs-137 systems.