The DM5E Family of Corrosion Thickness Gauges
A Range of High Performance, Reliable and Easy-to-Use Instruments
The DM5E family is the latest generation of portable corrosion monitoring thickness gauges
from GE Sensing & Inspection Technologies. It offers significant improvement in performance
over previous corrosion thickness gauges in terms of better thickness measurement stability
and repeatability at normal and elevated temperatures. It has been designed for operation
in the harshest of working environments, performing wall thickness measurements on pipelines,
pressure vessels and storage tanks in the oil and gas industry, as well as the petrochemical
and power generation sectors.
Three levels
There are three versions in the DM5E Family, which offer three levels of functionality:
§  DM5E Basic
§  DM5E
§  DM5E DL
The DM5E Basic
The rugged housing of the DM5E Basic is common to all versions. It is ergonomically designed
with a weight of just 223g, including its AA batteries, which allow up to 60 hours of operation.
The basic version is specified to EN 15317 and features an LCD data display, which is backlit
to be visible in all lighting conditions. Instrument operation is carried out with one hand via
a user-friendly interface. This is a sealed, watertight and dust-proof membrane keypad, which
features a minimum of function keys and arrow keys. Navigation through menus is simple
and intuitive. The basic version incorporates a wide range of features including Min/ Max
capture, B-Scan generation, alarms and differential thickness measurement to allow instant
comparison between measured and nominal thickness.
Technical Specifications – DM5E Family
Operating Principle	Ultrasonic, Pulse Echo Measurement Method
Measuring Range	Depends on Probe and Material, 0.60 mm to 508 mm (0.025” to 20.00”) in IP to 1st BW Measurement Mode, 2.00 mm to 127.0 mm (0.079” to 5.00”) in Dual-Multi Measurement Mode, The Coating Thickness Range shall be 0.3 mm to 2.50 mm (0” to 0.098”)
Measuring Resolution	0.01 mm Default – Selectable 0.01, 0.1 mm (0.001” Default – Selectable 0.001, 0.01”)
Material Velocity Range	0.508 to 18.6999 mm/msec (0.0200 to 0.7362”/msec)
Material Velocity Resolution	1 m/s (0.0001”/msec)
Units	Inch or Millimeter
Calibration	One-Point Cal, On-Block and Off-Block, Two-Point Cal
Pulser	Excitation Pulse	Spike Pulser
	Voltage	120 V into 50 ohm Load, Using 20 MHz Oscilloscope
Receiver	Bandwidth	500KHz to 12 MHz @ -3 dB
	Gain	Automatic Gain Control
Display Type	High-Resolution Graphical LCD, 64 x 128 Pixels, 53.0 mm x 27.0 mm with Backlight and Adjustable Contrast
Update Rate	4 Hz or 8 Hz, User Selectable, 24 Hz Scan Mode Capture Rate
Thickness Value Display	NORMAL View Mode	5 Digit, 10.6 mm (0.4”) High
	B-SCAN View Mode	5 Digit, 2.55 mm (0.1”) High
Display of Last Reading	Solid Filled or Hollow Digits Indicate Coupled or Uncoupled Condition
Setups	9 Standard Setups for Probes
Alarm Settings	Minimum and Maximum Alarms, Range of 0.25 mm to 508 mm, 0.(0.010” to 20.00”) Reading Alternates Between Solid and Hollow When Alarms Are Enables and Violated
Power Requirements	2 “AA” Size Batteries
Battery Life/ Operating Time	Approximately 60 Hours
Instrument Shut-Off	Selectable ALWAYS ON or AUTO OFF After 5, 10, 15, 30 Minutes of Inactivity
Language	Selectable English, German, French, Spanish, Italian, Russian, Japanese and Chinese
I/O Connectors	Transducer	Dual Lemo 00 (coax)
	Mini-USB	Mini-USB to PC
Temperature	Operating	-10°C to +50°C (+10°F to +120°F)
	Storage	-20°C to +60°C (-10°F to + 140°F)
Weight	223 g (0.597 lb) Including Batteries
Size	138 mm x 32 mm x 75 mm
Shock	IEC 68-2-27 Ea, as per Mil Std 810C Method 516.2 Procedure I with a 15g 11ms Impulse Half Sinusoidal Wave Applied 6 Times per Axis
Sealing	IEC 529/IP54, Dust Proof/Dripping Water Proof as per IEC 529 Specifications for IP54 Classification