Misonics VarioSonic G4 dual-frequency ultrasonic generator

Specification

Model	G4-1040/80
Ultrasonic frequencies	40 & 80 kHz
Rated power	1,000 W
Power adjustment	10–100 %Linear control across the range
Power supply	220 VAC ±10 %, 50/60 Hz
Control topology	Full-bridge phase shift
Power regulation	Constant power control
Frequency control	Automatic trackingLoad self-adaptation
Frequency switching	24 VDC ±10 %, 20 mA
Communications	RS485 (Modbus RTU)
Protection class	IP21
Ambient conditions	0–40 °C, 0–90 % RH
Enclosure size	412 × 160 × 238 mmL × W × H — 19-inch cabinet integration supported
Conversion efficiency	Up to 95 %

What the control actually does

Full-bridge phase shift	Stable, efficient power conversion for industrial ultrasonic loads.
Constant power output	Holds controlled output as the load and the bath conditions change.
Automatic tracking	Follows the resonant frequency and adapts to impedance changes — no manual retuning visit.
Peak power	Available on demand for stubborn contamination — the figure is confirmed against the model.
Sweep	Breaks up standing waves and evens out the energy distribution.
Monitoring	Voltage, current, phase, status, temperature, run time and both frequencies on the front LCD.
Protection	Over-current, over-voltage and short circuit, internally.
Integration	Remote control to PLC and HMI, RS485 Modbus RTU, 19-inch cabinet mounting.

VarioSonic G4-1040/80

40 & 80 kHz · 1,000 W rated

One generator, two selected operating frequencies — aggressive soil removal and fine cleaning on the same platform. Pick the frequency pair your parts need, then the power your transducer set draws.

Frequency pairrun either, or both

Which frequency should I choose? → How loud is each band? →

Rated power

Single frequency buys you powerTwo bands share one generator, so the dual models stop at 1,500 W. Where the process only ever runs one band, the same platform is built single-frequency and drives higher power — all of it into that band. Say which you need on the enquiry.

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 →

Price on application

Quoted with the transducer set it drives

Units

Not sure which — ask us

The VarioSonic G4 drives immersible transducers and transducer plates. It does not drive rod resonators — those are fixed-frequency and take the matched SonoDrive G5 instead. If you are retrofitting a tank with rods, start there.

Delivered within Australia. Outside Australia, request a delivered price.

The range

Nine dual-frequency models

Model codes read power then frequencies: G4‑10 40/80 is 1,000 W at 40 and 80 kHz. Tap a row to load that model into the configurator above.

Model	Frequency	Rated power

These nine are the dual-frequency range, and 1,500 W is the ceiling for running two bands from one generator. Built as a single-frequency unit the same platform drives higher power, because all of it goes into one band instead of being shared across two. Tell us the transducer set and we will confirm the generator, or the number of them, that drives it.

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.