PZX 7 001

DAKOTA ULTRASONICS PZX-7 DL Precision Thickness Gauge

DAKOTA ULTRASONICS PZX Series has arrived. The variety of features offered in the PZX-7 and PZX-7DL allow the user to select a quality tool that will meet or exceed their specific application needs. In the Echo-to-Echo Mode you have the ability to measure the thickness of materials without removing the paint or the coating. Our 5 year limited warranty indicates how we feel about the reliability and durability of the PZX SERIES.

The PZX-7 DL series gauges are our basic single element precision gauges, and equipped with a variety of measurement modes to address a number of potential applications. They can use both high and low frequency transducers with a variety of diameter options. Both models have USB-C connectivity, with and without data storage, and serial over USB-C using a CDC class. Optional RS232 and bluetooth modules available for connection with data collectors and custom apps. Our 5 year limited warranty indicates how we feel about the durability of the PZX Series.


Precision Machining Stamping
Aircraft Automotive
Thin Plastics Variety of Applications

  • Weight: 11 ounces (with batteries).
  • Size: 2.5 W x 5.17 H x 1.24 D inches (63.5 W x 131.3 H x 31.5 D mm).
  • Operating Temperature: -22° to 167°F (-30° to 75°C).
  • Case: Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed).


  • Sealed membrane that is resistant to both water and petroleum products.
  • 9 tactile-feedback keys.


    • Single-element (delay line & contact)

5 to 20 MHz frequency range.

  • Locking quick disconnect LEMO 00 connector.
  • 4 foot cable.
  • Custom transducers available for special applications.


  • Factory calibration traceable to NIST & MIL-STD-45662A.


  • 5 years limited
Power Source

  • Two 1.5V alkaline, 1.2V NiCad, or 1.5V lithium AA cells.
  • Typically operates for 35 hours on alkaline and 18 hours on NiCad.
  • Low battery indicator on display. Auto shutoff after 5 minutes of inactivity.
  • Line power USB-C connected to PC or power adapter.


  • Multi-function 7 segment 4.5 digit liquid crystal display with 0.500 in digit height.
  • Two 0.125 in14 segment fields for labels and values, and one 7 segment field for labels and values. Additional icons to indicate features and modes.
  • Backlight is selectable On/Off/Auto, and selectable brightness (Lo, Med, Hi) options.
  • Bar graph indicates stability of reading.


  • Sequential data storage, 40 files of 250 readings per file, for 10,000 readings (PZX-7 DL).


  • Comes complete with USB download cable (PZX-7 DL). No software required, comma separated file type (.csv).


  • Measurement Modes:
  • Pulse-Echo (P-E): 0.040 to 36.0 in (1.0 to 914.4 mm).
  • Echo-Echo (E-E): Delay line – 0.006 to 1.00 in (0.152 to 25.4 mm). Contact – 0.040 to 6.0 in (1.0 to 152.4 mm).
Measuring (Cont’d)

  • Interface-Echo (I-E): Delay Line – 0.060 to 1.0 in (1.524 to 25.4 mm).
  • Plastics (PLAS): Graphite Delay Line – 0.005 to 0.250 in (0.127 to 6.35 mm). Ranges dependent on transducer type, material type, transducer frequency and diameters.
  • Units: English & Metric (Low & High resolution).
  • Resolution: 0.001 or 0.0001 in (0.01 or 0.001 mm).
  • Velocity Range: 0.0120 to .7300 in/μs (305 to 18,542 m/sec).
  • PRF: 200Hz Display Update Rate: 10Hz
  • Gain: Automatic or manual control.
  • Time Dependent Gain (TDG): Implemented in all measure modes.


  • Transducer Types: Single delay line & contact styles. Selectable diameters for contact style.
  • High Speed Scan: Display the lowest reading found during a scan. Scan speed at 100Hz.
  • Differential Mode: Display the +/- difference from a nominal value entered.
  • Alarm Mode: High & low alarm limits with audible and visual indicators.
  • VX velocity: Measure in terms of velocity for nodularity testing.
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