The complete range of Dakota thickness gauges
CX Series · Entry level
Dakota CX2 – Basic Thickness Gauge
Entry-level model of the CX series, for quick thickness checks on steel and common metals.
- Pulse-Echo mode
- Range 1.0 – 508 mm, resolution 0.01 mm
- 39 material presets
- IP64 protection, weight 210 g
CX Series · ThruPaint™
Dakota CX4 – Thickness Gauge with ThruPaint™
The CX2 platform with the addition of through-coating measurement.
- Echo-Echo ThruPaint™ mode
- Measurement on painted surfaces without removing the coating
- Velocity Mode to characterise an unknown material
- Same hardware platform as the CX2
CX Series · With data logger
Dakota CX6-DL – Thickness Gauge with Data Logger
First model of the CX series with built-in data logger.
- Built-in data logger
- Readings stored in alphanumeric batches
- Transfer to PC via DakMaster™
- PE + EE ThruPaint modes
CX Series · Top of the range
Dakota CX8-DL – Gauge with Data Logger and B-Scan
Top of the CX series, with B-Scan cross-sectional display.
- Cross-sectional B-Scan
- Scan mode up to 16 Hz
- Memory of 100,000 readings in 1,000 batches
- Part Number Z-313-0001
ZX Series · Family overview
Dakota ZX Series – Entry-Level Corrosion Gauges (ZX-1, ZX-3)
Family overview of the entry-level ZX series, comparing the two base models.
- ZX-1 pre-calibrated for steel
- ZX-3 with extended range, scan mode, differential mode and limit alarm
- Base models without data logger
- Extruded aluminium housing, 5-year warranty
- 2×AA power supply, up to 45 hours of operation
ZX Series · Fixed velocity
Dakota ZX-1 – Fixed-velocity thickness gauge
Fixed-velocity thickness gauge: set the material velocity and measure, with no specialist training.
- Pulse-Echo measurement from 0.63 to 914.4 mm
- No training required
- 120 MHz FPGA timing, 150 V square wave pulser
- Display readable down to −30 °C
- 45 hours of operation with alkaline AA cells, 5-year warranty
ZX Series · Adjustable gain
Dakota ZX-3 – Thickness gauge with adjustable gain
Adds to the base level of the ZX series what is needed when the surface does not cooperate.
- Pulse-Echo measurement from 0.63 to 914.4 mm
- Adjustable gain 40–52 dB in 3 dB steps
- High-speed scan at 100 Hz with minimum reading
- Manual or automatic zeroing, selectable probe diameter
- Operating temperature −30 / +75 °C, 5-year warranty
ZX Series · Multi-Echo with data logger
Dakota ZX6-DL – Multi-Echo Gauge with Data Logger
Top of the ZX series: the only one in the family that measures through paint and stores readings.
- The only one in the series with Multi-Echo Through-Paint
- Multi-Echo range 2.54 – 152.4 mm
- Data logger of 10,000 readings in 40 files
- Part Number Z-306-0003
CMX Series · Family overview
Dakota CMX Series – Corrosion Gauges with A-Scan
Family overview of the CMX series, comparing the three models of increasing capability.
- CMX1-DL range entry with basic A-Scan
- CMX2-DL with advanced modes
- CMX3-DL with colour display and automatic AGC
- Up to 200 hours of operation
CMX Series · Professional entry
Dakota CMX1-DL – Corrosion and coating gauge
Measures metal thickness and coating thickness at the same time.
- Six modes: P-E, PECT, PETP, Echo-Echo, E-E Verify and Coating Only
- Measures metal and coating without removing the paint
- Pulse-Echo range 0.63 – 1219.2 mm, resolution 0.01 mm
- Scan at 250 readings/s and cross-sectional B-Scan
- 64 custom setups, 4 GB data logger, USB-C
CMX Series · Greyscale A-Scan
Dakota CMX2-DL – Corrosion gauge with A-Scan
Adds the A-Scan waveform to corrosion measurement, so the reading can be validated rather than trusted.
- Rectified and RF A-Scan, greyscale VGA display
- Six modes: P-E, PECT, PETP, Echo-Echo, E-E Verify, Coating Only
- Pulse-Echo range 0.63 mm – 30.48 m
- Gain over 110 dB with AGC and TDG, damping 50–1500 ohm
- Probes from 1 to 20 MHz, 4 GB memory, USB-C
CMX Series · Colour A-Scan
Dakota CMX3-DL – Corrosion gauge with colour A-Scan
The CMX2-DL with a colour AMOLED display: same electronics, more readable A-Scan.
- Colour AMOLED 1/4 VGA display, 320 × 240 pixels, 60 Hz refresh
- Vertical and horizontal A-Scan
- Six modes: P-E, PECT, PETP, Echo-Echo, E-E Verify, Coating Only
- Pulse-Echo range 0.63 mm – 30.48 m
- 4 GB memory, USB-C
CMX Series · Top of the range
Dakota CMX10-DL – Top-of-the-Range Corrosion Gauge
The absolute top of the thickness gauge catalogue.
- 800×480 colour TFT touchscreen display, IP65
- PE / EE / EEV / 2nd Layer modes up to 1480 mm
- Full Wave Capture and Image Collect
- Li-Ion battery and Bluetooth LE
- Made in United Kingdom
MX Series · Legacy model
Dakota MX1-DL – Advanced A-Scan and B-Scan Gauge
Legacy model of the MX series, on the DFX platform.
- Retains B-Scan and data logger
- Without dynamic A-Scan
- Supported for service and calibration
- For new purchases the MX2-DL is recommended
MX Series · Current model
Dakota MX2-DL – A-Scan/B-Scan Corrosion Gauge
Current model of the MX range, advanced corrosion segment.
- RF, Rectified+ and Rectified− A-Scan
- 4 GB memory, scan mode 250 readings/sec
- Cross-sectional B-Scan, sequential and grid logging
- 40 dB AGC, Part Number Z-149-0006
PMX Series · Family overview
Dakota PMX2-DL / PMX3-DL – Universal Precision Gauges
Family overview of the two current models in the precision range.
- Identical in hardware and measurement modes
- PMX2-DL greyscale display (Z-157-0006)
- PMX3-DL colour display with Landscape View (Z-157-0007)
- 4 GB memory, 110 dB AGC gain
PMX Series · Precision, greyscale display
Dakota PMX2-DL – Precision gauge with A-Scan
Precision thickness gauge for the manufacturing world, not for corrosion.
- Selectable resolution 0.01 or 0.001 mm
- Five modes: P-E, E-E, E-E Verify, Interface-Echo and Interface-Echo-Echo
- Single contact, delay line and pencil probes from 1 to 25 MHz
- 100, 150 and 200 V pulser, 110 dB gain, TDG
- A-Scan and B-Scan, 4 GB memory, USB-C
PMX Series · Precision, colour display
Dakota PMX3-DL – Precision gauge with colour A-Scan
The PMX2-DL with a colour AMOLED display: same precision, more readable A-Scan.
- Colour AMOLED 1/4 VGA display, 320 × 240 pixels, 60 Hz refresh
- Vertical and horizontal A-Scan
- Selectable resolution 0.01 or 0.001 mm
- Five modes: P-E, E-E, E-E Verify, Interface-Echo and Interface-Echo-Echo
- Three gates, 64 setups, 4 GB memory, USB-C
PMX Series · High penetration
Dakota PMX4-DL – High Penetration Gauge
Specialist model for attenuating materials: ductile cast iron, austenitic stainless steels, thick composites, reinforced concrete.
- Three pulsers: 200 V Spike, 400 V Square Wave, 400 V Tone Burst
- Probes from 500 kHz to 10 MHz
- PE range on steel up to 30,500 mm
- Part Number Z-225-0002
PZX Series · Legacy model
Dakota PZX1-DL – Precision Gauge for Thin Substrates
Legacy model of the precision range, dedicated to thin substrates.
- Precision measurements on thin substrates
- Supported for service and calibration
- For new purchases the PMX2-DL or PMX3-DL are recommended
PCX Series · Precision Thickness Gauge
Dakota PCX8-DL – PTG Precision Gauge
PTG specialised for thin substrates, with Bluetooth and material presets.
- Three dedicated modes: Interface Echo, Echo-Echo, Plastic Mode
- Accuracy up to ±1%, 2.4″ colour TFT display
- 39 material presets, memory of 100,000 readings
- USB + Bluetooth LE, IP64
- 15 MHz probe supplied
The range is organised into two main areas — corrosion and precision — with a third cross-cutting family dedicated to attenuating materials. At the top of the page you will find all the catalogue entries, in series order and with a direct link to each data sheet.
How the range is organised: corrosion, precision, high penetration
Corrosion
Dual element probes 1-10 MHz. Includes the basic CX series, the entry-level ZX series, the advanced CMX series (including the CMX10-DL) and the MX series with B-Scan.
Precision
Single element probes 1-25 MHz, resolution down to 0.001 mm. Includes the universal PMX series and the PCX8-DL PTG with Bluetooth.
High penetration
For attenuating materials: the PMX4-DL with Tone Burst pulser.
The series at a glance
CX Series — Basic thickness gauges
The most versatile line for corrosion monitoring. Dual element probes 1-10 MHz, compact AA-battery housing, designed for field use by non-specialist operators.
ZX Series — Entry level for corrosion
The most economical line in the catalogue, designed for operators without specialist training. Extruded aluminium housing, 5-year manufacturer’s warranty, 2×AA power supply with up to 45 hours of operation.
CMX Series — Corrosion with A-Scan
Adds to the CX series the A-Scan display (real-time ultrasonic waveform) and multiple measurement modes for critical applications. 4 GB memory, LEMO-00 connector, USB-C.
MX Series — Advanced corrosion with B-Scan
The Dakota advanced corrosion segment. 4 GB memory, scan mode 250 readings/sec, cross-sectional B-Scan, sequential and grid logging with alphanumeric IDs, OBSTRUCT flag, hybrid 3×AA + USB power supply.
PMX Series — Precision gauges
Dedicated to precision measurement with single element probes 1-25 MHz. Selectable resolution 0.01 mm or 0.001 mm, Interface-Echo mode from 0.127 mm on plastic, 110 dB AGC gain, 100 MHz 8-bit TCXO digitizer, 64 user-definable setups.
Instrument selection guide
Not familiar with the Dakota range? Identify your use case among the six most frequent scenarios and we will point you to the recommended model. For requirements outside these profiles, we remain at your disposal through the contact details on the Contact page.
Remaining thickness on corroded pipes and tanks
Basic measurements for industrial inspections on carbon steel subject to external or internal corrosion.
Recommended model: Dakota ZX6-DL
Routine inspections with data storage
Recurring measurements on tank farms and process lines, with built-in data logger for traceability and reporting.
Recommended model: Dakota CMX2-DL
Measurement through paint or coating
Echo-to-Echo (ThruPaint) technique to measure the thickness of the metal alone, ignoring the coating.
Recommended model: Dakota MX2-DL
Micrometric precision on sheet metal and composites
High-resolution measurements on sound materials: thin sheet metal, composites, engineering plastics.
Recommended model: Dakota PCX8-DL
Highly attenuating materials
Rubber, thick plastics, coarse-grained castings: high penetration and low working frequencies are required.
Recommended model: Dakota PMX4-DL High Penetration
Extensive monitoring with advanced mapping
Structured inspection campaigns with high-capacity data logger, B-Scan, conditional alarms and PC management.
Recommended model: Dakota CMX10-DL
Need help choosing the right product?
Quick selection guide
| Requirement | Recommended model |
| First instrument, limited budget, quick measurements on steel | CX2 or ZX-1 |
| Measurement on painted surfaces without removing the coating | CX4, ZX6-DL, CMX Series |
| A-Scan and multiple modes needed for critical applications | CMX1/2/3-DL |
| Maximum functionality, full traceability, colour touchscreen display | CMX10-DL Full Wave Capture |
| Extensive mapping with 4 GB data logger | MX2-DL or CMX Series |
| 0.001 mm precision on thin components | PMX2-DL / PMX3-DL |
| Attenuating materials (cast iron, stainless steel, thick composites) | PMX4-DL High Penetration |
| In-line quality control with Bluetooth and 39 material presets | PCX8-DL |
| Underwater measurements in immersion | Not available in the catalogue — contact us to assess the application |
Measurement modes: glossary
PE (Pulse-Echo)
Standard method: pulse → back-wall reflection → return.
EE (Echo-Echo) / ThruPaint™
Ignores up to ~2 mm of coating.
EE-V (Echo-Echo Verified)
Checks consistency between multiple echoes.
IE (Interface Echo)
For thin thicknesses with delay line, from 0.127 mm on plastic.
PE-TP (Pulse-Echo Through-Paint)
Correction for thick coatings, over 2 mm.
CT (Coating Thickness)
Specific measurement of the coating alone.
PECT (Pulse-Echo Coating Thickness)
Simultaneous measurement of coating and material.
2nd Layer (PE2 / EE2)
Second layer of multilayer composite material: exclusive to the CMX10-DL.
Typical applications
Oil & gas, chemical and petrochemical
Inspection of piping, tanks and heat exchangers to API 570 and API 653; pressure vessels and distillation columns in the chemical and petrochemical industry.
Tanks, power generation, pulp & paper
Tank farms and storage vessels; boilers, steam generators and critical piping in power generation; erosion and corrosion monitoring in the pulp & paper industry.
Structural steelwork, marine and offshore
Structural steel elements, hulls, platforms and load-bearing structures in the marine and offshore sector.
Aerospace, automotive and quality control
Precision measurements on aluminium and titanium and on bonded structures; quality control of pressed sheet metal and structural components; incoming goods and in-process checks.
Application guides from the blog:
- How ultrasonic thickness measurement works: basic principles
- Uniform corrosion monitoring: methods, instruments and standards
- Echo-Echo and ThruPaint™: measuring thickness through paint
- What the PECT mode is and when it is essential
- API 570 and API 653: instrumentation requirements
- NDT in aerospace: precision measurement
- How to improve results on difficult materials
- Dakota CX2 vs CX4 vs CX8-DL: which one to choose?
- Dakota ZX-3 vs CMX1-DL: when the basic gauge is not enough
Reference standards
- EN 14127 — Non-destructive testing: ultrasonic thickness measurement
- ASTM E797 — Standard practice for measuring thickness by manual contact ultrasonic methods
- EN 15317 — Characterization and verification of thickness measurement instruments
- API 570 — Piping Inspection Code
- API 653 — Tank Inspection, Repair, Alteration, and Reconstruction
- NIST-traceable factory calibration and MIL-STD-45662A
Unable to identify the right model?Describe your application to us — material to be measured, thickness range, surface conditions, operating environment — and we will propose the complete configuration with a dedicated probe. Contact us for dedicated technical advice.
Further information and contacts
Systems division and sensor integration partner : www.roder.it
More information about RODER SRL : about us
Contact for general information : info@roder.it
Contact for information about these products : info@roder.it
The information contained on this web page is provided for information purposes only. Although it has been compiled with the utmost care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.
Some images on this website have been intentionally generated using Artificial Intelligence (AI). This is because, for many applications and projects, it is not possible to disclose photographs of the installation or of the actual system due to confidentiality agreements, confidentiality clauses and non-disclosure agreements (NDAs).