Corrosion Thickness Gage 37DL PLUS
The Panametrics-NDT™ 37DL PLUS is an advanced nondestructive ultrasonic thickness gage that combines powerful measurement features with sophisticated data acquisition and output capabilities for applications involving pipes, tanks, and other metal structures subject to internal corrosion or erosion. The 37DL PLUS includes many innovative features that simplify true metal thickness measurements even when the exposed surface is coated or painted. A new Thru-Coat technology measures and displays the thickness of the metal part and its coating using a 'single backwall echo'. A new Oxide/Scale option measures and displays the thickness of the steel and the oxide/scale build-up on the inside of boiler tubes to help predict tube life. Accuracy of high temperature thickness measurements can be improved by using the new Temperature Compensation feature that adjusts the material velocity for changes in material temperature. A new Average/Min mode saves the average or minimum of several successive thickness measurements.
Features
• New Thru-Coat™ technology measures and displays the thickness of the metal part and its coating using a 'single backwall echo'.
• New Temperature Compensation feature adjusts the material velocity for changes in material temperature.
• New optional Oxide/Scale feature measures and displays the thickness of the steel and the oxide/scale build-up.
• New Average/Min mode saves the average or minimum of several successive thickness measurements.
• New A-scan display is brighter with better contrast and visibility.
• New: uses a vast array of dual element and single element contact, delay line, and immersion transducers.
• EMAT transducers for no-couplant steel thickness measurements through heavily scaled surfaces.
• The file-based alphanumeric datalogger can use longer file names (32 character max) and ID numbers (20 character max).
• Improved: every thickness reading in a stored B-scan can now be reviewed in the WIN37DL PLUS Interface Program and on the gage.
• Improved: select to view (Min/Max, Alarm, or A-scan flags) flags for Grid points.
• Grid files can be expanded by adding rows or columns or by changing the incrementing direction.
Advanced Ultrasonic Corrosion Gage
Improvements
New 37DL PLUS electronics bring improvements to many standard measurement features. The new A-scan display is brighter with better contrast and visibility. Every thickness reading in a stored B-scan can now be reviewed on
the 37DL PLUS and in the Interface Program. The user can select to view (Min/Max, Alarm, or A-scan flags) flags with Grid points. The file-based alphanumeric datalogger can use longer file names (32 character max) and ID numbers (20 character max). Grid files can be expanded by adding rows or columns or by changing the incrementing direction.
New Transducers
The 37DL PLUS can be used with a vast array of dual element and single element transducers. Its full line of D790 series dual element transducers feature Automatic Probe Recognition to provide maximum gage performance for each transducer. The 37DL PLUS also has the ability to use the E110-SB EMAT transducer for no-couplant steel thickness measurements through oxide-scaled surfaces. The M2017 and M2091 transducers are ideally suited for measuring internal oxide/scale build-up on boiler tubes. The 37DL PLUS is also compatible with the Panametrics-NDT complete line of Microscan single element direct contact, delay line, and immersion transducers ranging in frequency from 2 to 30 MHz. As a result, the gage can be used for non-corrosion applications involving materials such as plastic, fiberglass, composites, rubber, castings, rubber and glass. Application Auto-Recall automatically recalls 16 default and 10 custom Microscan transducer setups from the gage's memory.
37DL PLUS Specifications*
Measurements
Dual Element Measurement Mode: Time interval from a precision delay after the excitation pulse to the first echo.
Thru-Coat Measurement: Measurement of true metal and coating thickness
using a single backwall echo (with D7906-SM and D7908 transducers).
Thru-Paint Echo-to-Echo: Time
interval between two successive backwall echoes for elimination of paint or coating .
Single Element Measurement Mode:
Mode 1: Time interval between
excitation pulse to first backwall echo.
Mode 2: Time interval between delay line echo to first backwall echo with delay or immersion transducers.
Mode 3: Time interval between successive backwall echoes following the first interface echo after the excitation pulse with delay line or immersion transducers.
Optional Oxide/Scale Measurement:
Measure metal thickness and internal oxide/scale build-up of pipes. Oxide/scale thickness range:
M2017: 0.010 - 0.050" (0.25 - 1.25 mm)
M2091: 0.006 - 0.050" (0.15 - 1.25 mm)
ThicknessRange:
0.003 - 25.000 inches (0.080 - 635.00mm), depending on material, transducer surface condition, temperature, and SETUP selected
MaterialVelocity Range:
0.020 - 0.551 inch/µS
(0.508 - 13.998 mm/µS)
Resolution, selectable:
| LOW: | 0.01" | 0.1 mm |
| STANDARD: | 0.001" | 0.01 mm |
Battery:
6V rechargeable NiCad battery pack, or field-replaceable alkaline AA batteries
BatteryLife:
25 hours in normal measurement mode with backlight off
Fast-Charger:
Two-hour Fast-Charger with universal voltage
TransducerFrequency Range:
2-30 MHz (-3 dB)
Operating Temperature:
-10 to +50°C (+14° to 122°F)
Keypad:
Sealed color-coded keypad with tactile and audible feedback
Case:
Impact-resistant and Water-resistant, gasketed Lexan® case with sealed connectors. Environmental IP-65 compliant
Liquid Crystal Display:
With backlight. Contrast keypad adjustable. Display area 4.0 x 3.39 inch (102 x 86 mm)
Hazardous Area Operations:
As defined by MIL-STD-810E, method 511.3, procedure 1
Rectification:
Full wave, RF, half wave positive, or half wave negative
DisplayRangeand Delay Control
Metric/English Units
Size:
9.375 x 5.45 x 1.5" (238 x 138 x 38 mm)
Weight:
2.1 lbs. (0.95 Kg)
INTERNAL DATALOGGER
Datalogger and RS-232:
The 37DL PLUS identifies, stores, recalls, clears, and transmits thickness readings, waveform images, and gage setup information via the RS-232 serial port. Baud Rate, Word Length, Stop Bits, and Parity are adjustable from the keypad.
Maximum # of Stored Values:
Standard: 60,000 thickness readings
or 4,500 waveforms with thickness readings
File Names, ID# and Comments:
32 character file name plus 20 character alphanumeric location code with 4 comments per location
File Structures:
7 standard or custom application
-specific file structures
Reports:
On-gage reporting of summary with statistics, Min/Max with locations, File Comparison, and Alarm Report. On-screen comparison of current and previous readings.
Standard Inclusions
Model 37DL PLUS Digital Ultrasonic Thickness Gage with Waveform Verification, AC or Battery Operation, 50-60 Hz
• D790-SM Transducer, 5.0 MHz, 0.434" (11mm) tip, temp. range -5° to 932°F
• Charger/AC adapter (100, 115, 230 VAC)
• Internal Datalogger
•WIN37DL PLUS Interface Program
• Test Block and Couplant
• RS-232 Cable
• Protective Pouch with Neck Strap
• Instruction Manual
• Two-Year Limited Warranty
• Measurement features: Thru-Coat, Echo-to-Echo Thru-Paint, EMAT Compatability, Min/Max Mode, Two Alarm Modes, Differential Mode, B-scan, Application Auto Recall, Temperature Compensation, Average/Min Mode
Optional Accessories
| 37DLP/EW | Third-Year warranty |
| WIN37DL PLUS/CCG | (Color-coded Grid software) |
| 36CA/EC-115 | External Fast Charger, 115 VAC |
| 37DLP/SU/OXIDE | Software option for the measurement of boiler tubes and internal oxide |
| 1/2XA/E110 | Filter adapter for E110-SB EMAT transducer |