ULTRASONIC FLAW DETECTORS | Thickness Gages
Ultrasonic Precision Thickness Gauge


The CL 400 has all the ultrasonic performance needed to get the job done with the straightforward operation you
will appreciate. You can expand the instrument’s capabilities by adding the optional A-Scan or Programmable Data Recorder features.
Reliable Results
The CL 400 locks quickly on to the reading, displaying a rock–solid value that provides assurance of the measurements accuracy while minimizing test time. This is the result of combining the CL 400’s advanced signal processing with our highly damped single element transducers.
Basic Gauge Features
The basic CL 400 displays the thickness value in large easy-to-read digits.
From the very first time you turn on the instrument you will discover the ease of operation and versatility provided by the following useful features:
• Help Window - text messages outline step-by-step procedures for various tasks such as calibration, probe setup and data recording
• Six virtual keys - change function based on the task at hand to eliminate searching through numerous dedicated keys
• Large hollow/filled thickness digits
- clearly indicates coupling status
• Selectable resolution - down to 0.0001 inches or 1 micron
• Velocity Value - always indicated for immediate reference
• Alarm Bar Graph - quick visual aid to easily recognize when alarm values are exceeded
• Standard parameter setups – support an assortment of delay, contact and bubbler style probes
• Custom parameter setups – easily identify a setup by assigning a name related to material type or grade, part
name, description, etc. Store your named setup along with all probe parameters, calibrated settings and
alarm values for fast and easy recall at any time
• Virtual keyboard - simple alphanumeric naming of custom setups or data files
• Lockout feature - password protection allows a supervisor to select and limit user access to instrument functions
• Bi-directional RS232 port
- upgrade operating software via Internet; send readings directly to a PC; 2-way communication of data
recorder files or custom setup files
• Readily Available Power Sources
- “AA” Alkaline or externally charged NiMH and NiCad batteries can be used. Insertion of the AC power
supply’s plug into the instrument’s power receptacle automatically disconnects the batteries
• Custom molded, gasket-sealed, high impact resistant plastic housing
-for durable trouble-free use
The basic CL 440 Model is the cornerstone for constructing a solution that meets your exact needs by adding the options of displaying an A-Scan or Data Recorder. One or both can be installed at the time of purchase or can be retrofitted later as your testing requirements change.