Ultrasonic Transducers, Generators & Retrofit Kits

The components

Pick the part you need

Everything here is sold on its own — retrofitted into a tank you already own, as parts for a system you are building, or as replacements for a machine that has gone quiet. Start with what goes in the tank; the generator follows from it.

The generators

Two generators

Everything here runs on one of these two. The generator is chosen by the transducer — never the other way round.

VarioSonic G4 Multi-frequency. Nine models · 28/45, 40/80, 80/130, 40/130 kHz · 800 to 1,500 W dual, higher single Pick a model →

SonoDrive G5 Fixed frequency, matched to the rod for power output — 25 kHz standard, 40 kHz optional The SonoDrive →

Not sure which?Send the tank dimensions, the working depth and what you are cleaning. We will tell you which system the vessel wants and quote the pair.Scope a retrofit →

Only after a generator? Read this firstOpen

We do not sell a generator on its own to drive transducers we have not specified, and we do not sell transducers to run on a generator we did not supply. It is not a policy about paperwork — the two are tuned to each other, and an unmatched pair usually means no cavitation, a drive running hot, and both halves replaced inside a year.

There is no warranty on an unmatched pair. If you already own one half, tell us what it is and roughly when it went in and we will tell you where you stand before you spend anything.

Why that is — the five things that have to line up →

The transducers

And what they drive

Start here. What goes in the tank decides the drive, and each of these is quoted with the generator that matches it.

Immersible transducers Custom built — your dimensions, SS304 or SS316L, your frequency, your fixing points. Driven by the VarioSonic G4 Specify a box →

BLT transducers — single frequency The bolted element on its own, one tuned note — 28, 40, 68, 80 and 130 kHz. For transducer plates, OEM builds and repairs. Driven by the VarioSonic G4 Single-frequency elements →

BLT transducers — dual frequency One element, two tuned notes, switched at the generator — 25/45, 28/68, 40/80, 40/130 and 80/130 kHz. Coarse pass and finish pass in the one tank Dual-frequency elements →

Solo 360 rod resonators Twelve lengths, 340 to 1327 mm · 800 to 1,500 W · 25 or 40 kHz. Driven by the SonoDrive G5 Pick a length →

They do not cross over. The G4 is a multi-frequency generator for immersibles and plates. Rod resonators are fixed-frequency and run on the matched SonoDrive G5. Fitting one to the other does not work — if you are unsure which system your tank wants, send the dimensions and the duty and we will tell you.

Why buy components

Three situations where the machine is the wrong purchase

If you are converting a tank you already own, start here: adding ultrasonics to an existing tank →

You have a good tank that is not ultrasonic

Stainless, sound, the right size, already plumbed, already heated. Replacing it to gain ultrasonics is buying a tank you already have. A rod or an immersible array drops in and changes what it is.

You have an ultrasonic tank that has gone deaf

Bonded transducers fail. Generators drift off resonance and nobody notices until parts stop coming clean. Transducers and generators are replaceable line items — not a reason to scrap the machine.

You are building something we do not make

A process line, an OEM machine, a one-off rig. You need the ultrasonic engine and the engineering to size it — not a catalogue product bent to fit.

And one where it is the wrong call

If the vessel is near the end of its life, retrofitting it is money into a tank you will replace. We will tell you that rather than sell you the hardware.

Choosing between them

Rod or immersible?

	Rod resonator	Immersible array
Field shape	360° along the whole immersed length — fills the vessel	Directional from the array face — aimed where the work sits
Best for	Deep tanks, cylindrical work, brutal soil loads, awkward vessels	Rectangular tanks, defined work zones, high power density
Frequency	Fixed per rod — 25 kHz standard, 40 kHz optional	Fixed single — 28, 40, 68, 80 or 130 kHz. Or a selectable pair — 28/45, 40/80, 80/130 or 40/130 kHz
Fitting	Horizontal or vertical, through the wall or from the rim — and out again in minutes	Hung, floor-stood or bulkhead-mounted
Room taken	Very little — several rods fit where one plate would go, so more power goes into the same tank	Takes a face of the tank
Fine finishing work	Not its strength — robust deep-field cleaning	Better for finer, controlled work

The engineering limit: rod resonators are single-frequency devices, and their strength is robust, even, deep-field cleaning rather than high-frequency finesse. Precision multi-frequency work belongs on bonded and immersible platforms. The rod owns depth and durability.

All specifications — incl. dimensions, ultrasonic power and volume — are confirmed at quotation.

Feasibility

Five things and a photo

That is genuinely all we need to tell you whether a retrofit will work — and whether it is worth doing.

Tank dimensions — length, width and working depth.
Where it sits — open shop floor, in a line, or inside a process bath.
Vessel material and remaining life — there is no point retrofitting a tank that is nearly through.
Heating and filtration already present — what you already have, we do not need to sell you.
Power available at the wall — the constraint on how much ultrasonic power you can actually run.

How it is sold

The generator and the transducer are bought together

A generator is tuned to the transducers it drives. Four things have to line up: the frequency the generator tracks, the total capacitance of the array wired to it, the impedance and phase that array presents once it is in the liquid, and the voltage across the group under load. We specify all four against each other, so the pair is quoted, built and commissioned as one item.

What goes wrong when they are not matched

The label is not the loadTwo transducers both marked 40 kHz are not the same electrical load — they differ in capacitance, in phase, and in how the assembly moves. A generator is tuned to a particular array, not to a number on a plate.

The tuning is inside the generatorA matching network — transformer ratio and a tuning inductance — cancels that array's capacitance so the drive sees a near-resistive load at resonance. Change the array and the power goes into heat and reactive current instead of cavitation.

Tracking only has a windowThe generator hunts for resonance within a narrow band around its design frequency. A stack outside that window is never found: the drive sits off resonance, runs hot, and trips or limits.

Power has to match both waysOverdriven, the ceramic depoles and the bond lines and the radiating face fail years early. Underdriven, there is no useful cavitation at all — a bath that looks like it is running and does not clean.

The cable counts tooCable capacitance sits inside the tuned circuit, which is why the length is quoted with the set and should not be extended on site.

A new generator will not rescue an old set. Transducers age — output falls away, the resonant point drifts and the impedance climbs — so an older array is no longer the load a new drive was tuned for. A set of mixed ages is worse again: the weakest element pulls the rest off tune and the drive spends its power hunting for a resonance that has moved. What you get is a generator running hot or dropping out, a bath cleaning unevenly, and transducers failing earlier than they should — and from the outside there is no way to tell which end is at fault, so you end up replacing both anyway.

There is no warranty on an unmatched pair. Equipment warranty covers a generator and transducers supplied and matched by Misonics. A Misonics transducer driven by a generator we did not supply, or a Misonics generator fitted to transducers we have not specified, is not covered — we have no way to characterise the combination, so we will not stand behind it. If you already own one half, tell us what it is and roughly when it went in, and we will tell you where you stand before you spend anything.

You already own the tank. Buy the sonics.