Sometimes liquids are too opaque or oily to monitor effectively with traditional optical-based technology. That’s where Galvanic’s acoustic-based products come in, delivering rugged, reliable, real-time results to optimize your processes and assure consistent quality and regulatory compliance. The Monitek family of turbidity and total suspended solid (TSS) monitors are ideal for applications that require detecting suspended solids in samples that typically coat sensors, particles in opaque liquids, and oil in water.

Offering the Utmost in Flexibility to Meet Your Toughest Analytical Challenges

Monitek’s two-component systems include modular, fit-for-purpose probes to pair with a messenger controller. The monitors employ the principle of ultrasonic reflection for measurement, where an emitted ultrasonic pulse is reflected by the particles in a return “echo,” which is back-scattered and transformed into an electronic signal. The system detects, evaluates, and then displays the signal as a precise measurement value. Various sensor configurations allow for installation into process pipes, tanks, or open channels.


The Monitek UltraSonic multi-sensor controller delivers unparalleled flexibility and economical operation:

Analog output: 0/4-20 mA

Process calibration curve can be created between two and 16 standards

Measurement frequencies: 5 MHz and 15 MHz

High measurement sensitivity

Programmable range (maximum 1 % TSS)

Programmable measurement units (ppm, mg/l, %, etc.)

Linearization of measurement values

Four programmable setpoint relays

Backlit graphic display

Precision: +/- 1% of range

Rugged, reliable sensors deliver superior accuracy and repeatability to meet your real-time analysis need

Ranges: 0 – 10 ppm to 0 – 10,000 ppm

Process insertion through pipe adapter with or without ball valve

Measures in opaque liquids and in photo-sensitive fluids

Not affected by color

Insensitive to coatings

Easy insertion / removal without process interruption

Virtually maintenance-free; no wearing parts



Catalyst detection

Catalyst recharge

Food & Beverage

Edible oil processing

Oil & Refining / Petrochemical

Brine purification

Catalyst detection

Catalyst recharge

Oil in water

Pulp & Paper

Suspended solids in green liquor

Suspended solids in white liquor