Ultrasonic velocity gauges.
QSV series Grey and ductile (nodular) ironQSV gauges determine the cast iron type (grey or ductile) and the nodularity percentage from the ultrasonic propagation velocity, and can also be used to classify materials by that velocity. The measurement starts from the part's thickness, entered manually or from a digital calliper connected via the dmq interface cable.
Is this your equipment?
Yes, if you need to
- Classify grey or ductile (nodular) cast iron without a destructive test.
- Estimate the nodularity percentage of a cast iron part.
- Separate or identify materials by their ultrasonic propagation velocity.
One model, with data logging built in.
QSV DL
Automatic one-step calibration, with no Cal key, plus memory and PC data output built in.
Propagation velocity, not thickness.
The QSV DL sends an ultrasonic pulse through the part that bounces back off the opposite face, just like an ultrasonic thickness gauge — but it runs the calculation in reverse: from an already known thickness (entered manually or from a digital calliper) and the pulse's round-trip time, it calculates the actual propagation velocity of sound in that material.
That velocity varies with the material's microstructure: in cast iron it's directly related to the graphite shape (flake in grey iron, spheroidal in ductile iron) and to the nodularity percentage, so the QSV displays the measured propagation velocity and, from that value, you classify the cast iron type and estimate the nodularity percentage. The same principle lets you classify and separate materials by propagation velocity when their external appearance isn't enough to tell them apart.
Compatible with digital callipers.
The QSV DL accepts thickness input from an external digital calliper (InSize or Mitutoyo) connected via the dmq interface cable, speeding up data capture compared with manual entry.
Transducers, interface and consumables.
Three transducers depending on part and material, a digital calliper interface, and couplant gel.
2 MHz, Ø12 mm, 90° transducer
For attenuating materials or thick sections. Range from 4 to 500 mm.
5 MHz, Ø10 mm, 90° transducer
General purpose. Range from 1 to 300 mm.
5 MHz, Ø10 mm, straight transducer
General purpose. Range from 1 to 300 mm.
Cable for InSize digital calliper
1 m length
Cable for Mitutoyo digital calliper
1 m length
LinQ USB interface cable
Sends measurements to Excel or Word in real time with no software to install.
Couplant gel
50 and 100 ml bottles, and 0.5, 1 and 5 kg containers. Operating temperature: -10 to 40 °C.
What's included when you buy here
- See it in action. The manufacturer can arrange a demo video call using your own parts and materials.
- 5-year warranty limited to the electronic unit, when the equipment is registered at www.demeq.com within the first year.
- Service across Europe. Technical support for everyday use, plus recalibration and repair, in and out of warranty.
- Documentation. Manufacturer's Certificate of Conformity included. Traceability certificate on request when you ask for your quote.
What do you need to classify?
Tell us which cast iron or which materials you need to distinguish, and how you measure your parts' thickness. We'll confirm the equipment and accessories for you.
