Dakota NDT CMX Series Corrosion Thickness Gauge

Fits coated and bare corrosion surveys that need a handheld ultrasonic gauge measuring material and coating thickness together — Pulse-Echo, Echo-Echo ThruPaint, coating-only, and temperature-compensated modes across CMX1-DL / CMX2-DL / CMX3-DL.

Key advantages

Modes — P-E, PECT, PETP, E-E ThruPaint, E-EV, Coating Only (CT)
Range class — Pulse-Echo about 0.025–48 in (0.63–1219 mm) typical, transducer-dependent (OEM)
Display — Greyscale 1/8 VGA (CMX1/2) or 1/4 VGA AMOLED color with A-Scan (CMX3)
Logging — 4 GB internal sequential/grid with USB-C transfer
Gain — Manual or AGC ~110 dB; TDG on CMX2/3; dual pulsers/receivers

Typical applications

Remaining-wall corrosion on tanks, pipes, and coated steel structures
ThruPaint surveys where coating removal is not practical
Simultaneous material + coating thickness documentation
Field crews needing high-speed scan (up to 250 readings/s on CMX1 class)

Selection guide

Variant — CMX1-DL vs CMX2-DL vs CMX3-DL (color A-Scan / TDG on higher models)
Resolution — 0.01 mm (0.001 in); finer 0.001 mm selectable on CMX2/3
Transducer — Dual/single element 1–20 MHz; contact, delay, pencil configurations
Environment — Operating −10 to 60 °C (14–140 °F); extruded aluminum gasket-sealed case
Power / size — 3× AA or USB; about 383 g; 63.5 × 165 × 31.5 mm

Common mistakes

Ordering CMX1 when color A-Scan / TDG on CMX2/3 is required
Assuming ThruPaint range equals bare P-E range — E-E ranges are narrower and coating-dependent
Skipping transducer selection — range and coating performance are probe-dependent
Expecting >4 GB onboard without external workflow planning

When to RFQ / what to tell us

Exact model (CMX1/2/3-DL), coated vs bare primary work, and probe preference
A-Scan / TDG need, logging format (grid vs sequential), quantity
Ship-to and material/coating notes

Request a Quote · Get selection help

Specs

Spec	Value
SKU	141198
Brand	Dakota NDT
Model	CMX Series (CMX1-DL / CMX2-DL / CMX3-DL)
Product type	Ultrasonic corrosion thickness gauge
Modes	P-E, PECT, PETP, E-E, E-EV, Coating Only (CT)
Pulse-Echo range	About 0.025–48 in (0.63–1219.2 mm) typical, transducer-dependent
Echo-Echo (E-E)	About 0.100–6.0 in (2.54–152.4 mm); coating-dependent
Coating only (CT)	About 0.0005–0.100 in (0.0127–2.54 mm)
Resolution	0.01 mm (0.001 in); 0.001 mm selectable on CMX2/3
Display	CMX1/2 greyscale 1/8 VGA; CMX3 1/4 VGA AMOLED color with A-Scan
Scan rate	Up to 250 readings/s (CMX1 class); 50 readings/s CMX2/3 class
Gain	Manual or AGC ~110 dB; TDG on CMX2/3
Memory	4 GB internal; USB-C
Power / size	3× AA or USB; ~383 g; 63.5 × 165 × 31.5 mm
Operating temp	−10 to 60 °C (14–140 °F)

Documents

Dakota NDT CMX2-DL & CMX3-DL datasheet (PDF)

FAQ

Q: CMX1 vs CMX2 vs CMX3? A: Higher models add finer resolution options, TDG, and (CMX3) color AMOLED A-Scan — name the suffix on the RFQ.

Q: Can it measure through paint? A: Yes — Echo-Echo / E-EV ThruPaint modes; ranges are narrower than bare Pulse-Echo and coating-dependent.

Q: What should I send for a quote? A: Model suffix, coated vs bare, probe preference, quantity, ship-to. Compatible with systems using Dakota CMX — we do not claim authorized-dealer status.

Parameter	Value
Display	Greyscale 1/8 VGA (CMX1/2) or 1/4 VGA AMOLED color with A-Scan (CMX3)
Type	Dakota NDT CMX series ultrasonic corrosion thickness gauge (CMX1-DL / CMX2-DL / CMX3-DL)
Modes	Pulse-Echo, Echo-Echo (ThruPaint), PETP temp-comp, EEV, Coating Only, Pulse-Echo Coating
Range Pe	Pulse-Echo about 0.63 to 1219.2 mm (0.025 to 48 in) typical, transducer-dependent
Resolution	0.01 mm (0.001 in); finer 0.001 mm selectable on CMX2/3
Memory	4 GB internal sequential/grid logging with USB transfer
Scan Rate	Up to 250 readings/s high-speed scan (CMX1); 50 readings/s on CMX2/3
Gain	Manual or AGC with about 110 dB range; TDG on CMX2/3
Power Size	3 x AA or USB; about 383 g; 63.5 x 165 x 31.5 mm; operating -10 to 60 C
Document	Dakota NDT CMX2-DL & CMX3-DL datasheet (downloads.dakotandt.com)