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The Dakota Ultrasonics CMX Corrosion Thickness Gauge is a durable multi-mode, dual element gauge designed for rough conditions. This IP65 rated unit is ideal for detecting corrosion and pitting in applications on glass, tanks, tubes and pipe, and boilers. The CMX is protected by an extruded aluminum body and nickel-plated aluminum end caps (gasket sealed). The 12-key keypad is made with a sealed membrane to make it resistant to water and petroleum products. A backlit display allows the operator to view readings even in dim settings. For harsher environments, operators can take advantage of the alarm mode and set a high and low temperature limit.
This gauge is CDC compatible serial over USB and also features USB-C connectivity. The CMXDL includes a Data Logger for storage of measurements, B-Scans, and custom setups. The data logger model is available with 25Hz and 60Hz screen refresh rate options as well as an AMOLED color VGA screen. While having the same features as the MMX-7, the CMX also offers coating modes, automatic probe zeroing and recognition, and temperature compensation. The CMX Corrosion Thickness Gauge offers four modes to match the challenges presented in a variety of industry applications.
Pulse-Echo Mode
Echo-Echo Mode
Echo-Echo Mode (E-EV)
Coating Only Mode
The CMX utilizes dual square wave pulsers and dual receivers with manual or AGC gain control (limited 110dB range). To improve linearity, the operator can select transducer types with built-in dual path error correction. A bar graph shows the stability of readings during inspection. Velocities can be set manually using the CAL key or selected from a list of 8 common material velocities. This unit includes 4GB of internal SD memory.
| Measuring | |
| Pulse Echo Range* | 0.025" - 48.0" (0.63mm - 1219.2mm) |
| Echo-Echo Range** | 0.100" - 6.0" base metal |
| Echo-Echo (E-EV) Range** | 0.050 - 1.0" (1.27 - 25.4mm) |
| Coating Only Range** | 0.0005 - 0.100" (0.0127 - 2.54mm) |
| Units | Imperial and Metric |
| Resolution | 0.001" (0.01 mm) |
| Velocity Range | 0.0122 to .7300 in/μs (309.88 to 18,542 m/sec) |
| Pulser | Dual square wave pulsers |
| Receiver | Dual receivers with Manual or AGC gain control with 110dB range (limited) |
| Timing | Precision TCXO timing with single shot 100MHz 8 bit ultra low power digitizer |
| Display | |
| Display | 1/8" VGA grayscale display (240 x 160 pixels) Viewable area 2.4 x 1.8" (62 x 5.7mm) EL backlit (on/off/auto) |
| Display + Data Logger | CMXDL+ - 25HZ refresh rate CMXDL+Color - 60HZ refresh rate with AMOLED color VGA |
| A-Scan | Scope available in Data Logger Plus models |
| B-Scan | Time based cross section view. Display speed variable (10 to 200 readings per second) |
| Scan Bar | Speed 10 Hz. Viewable in B-Scan and Large Digit views |
| Keypad | 12 tactile feedback keys |
| Memory | |
| Data Structure | Grid (alpha numeric) Sequential (Auto Identifier) |
| Screen Capture | Bitmap graphic capture for quick documentation (.tif) |
| Obstruct | Indicates inaccessible locations |
| Capacity | 4GB internal SD card |
| Data Output | USB-C 1.1 PC connectivity |
| Power Source | |
| Battery | Three AA cells Alkaline - grayscale 35 hrs, color 12 hrs Nicad - grayscale 10 hrs, color 5 hrs NI-MH - grayscale 35hrs, color 12 hrs |
| Line Power | USB-C to PC or power outlet |
| Physical | |
| Weight | 13.5 ounces (with batteries) |
| Size (WxHxD) | 2.5x6.5x1.24" (63.5x165x31.5mm) |
| Operational Temperature | -14 to 140°F (-10 to 60°C) |
| Case | Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed) |
| Certification | Factory calibration traceable to NIST & MIL-STD-45662A |
| Warranty | 2 year limited |
| Transducer | |
| Frequency Range | 1 - 10MHz |
| Type | Dual Element (transmit and receive) |
| Connectors | Locking quick disconnect |
| Cable Length | 4' |
*Range dependent on material and transducer type.
**Range dependent on coating thickness.
