USM 35 -

The latest version of the USM 35 portable ultrasonic flaw detector from GE’s Inspection Technologies business, is now totally protected against the ingress of dust and high pressure jets of water to IP 66 and contains new software which allows its operation to Japanese weld inspection standards.

  • Protection accorind to IP66
  • Can be operated in harsh or industrial environments
  • Fast and bright color LCD
  • Rechargeable battery with ability to operate for 14 hours
  • Max allowable operating temperature range from 0°C to 50°C
  • Optional DGS module for single element or dual element (T/R) probes. The module includes some preset GE’s single or dual probes. Other probes can be configured by the user.


USM 35 Specification

Min0 to 0.5 mm +10 % (steel), 0 to 0.02” +10 % (steel)
Max0 to 9,999 mm +10 % (steel), 0 to 390” +10 % (steel) within the frequency range from 0.2 to 1 MHz / 0.5 to 4 MHz 0 to 1,420 mm +10% (steel),0 to 56” +10 % (steel) within the frequency range from 0.8 to 8 MHz / 2 to 20 MHz
Sound velocity1,000 to 15,000 m/s, 40 to 600 inch/ms variable in steps of 1 m/s, 0.1 inch/ms and fixed programmed values
Display delayFrom -10 to 1,000 mm, -0.3 to 40” (340 μs)
Probe delay0 to 200 μs
Auto calibrationMeasurement and setting of sound velocity and probe delay using two known calibration echoes (2-point calibration)
Pulse intensity220 pF, 1 nF
Damping50 ohms, 500 ohms (1,000 ohms in TR mode)
Pulse repetition frequency4 to 1,000 Hz, variable in 10 steps
Frequency ranges (-3 dB)0.2 to 1 MHz / 0.5 to 4 MHz / 0.8 to 8 MHz / 2 to 20 MHz
Gain0 to 110 dB, variable in steps
Gain steps0.5 / 1 / 2 / 6 / 12 dB (or user-adjustable), step 0 is locked
Fine gain4 dB, continuously variable in 40 steps
RectificationFull-wave, negative and positive half-wave, RF mode
RejectLinear, 0 to 80 % screen height Variable in steps of 1 %
Monitor gates2 independent gates in color bar mode, start and width variable over the entire calibration range, response threshold of 10 to 90 % screen height variable in steps of 1 % (coincidence and anti-coincidence), alarm signal via LED and connectable internal horn, Gate A switchable as interface gate for Gate B, gate magnifier (zooming of gate range over the entire display range)
Sound path measurementDigital display of sound path (projection distance, depth) between initial pulse and the first echo in the gate, or between the echoes in the two gates, measurement always at the intersection point with the echo flank or echo peak
Measurement resolution0.01 mm within a range up to 99.99 mm/ 0.1 mm within a range from 100 to 999.9 mm/ 1 mm above 1,000 mm, 0.001” within a range up to 9.999”/ 0.01” above 10” With evaluation in the frozen A-scan: 0.5 % of the calibration range setting
Amplitude displayIn % screen height
USM 35X DAC: additionally in dB above DAC or TCG
USM 35X S: additionally in dB above DGS curve or ERS
Displayed readingSound path, (reduced) projection distance, depth, amplitude for every gate, userconfigurable at four positions of measurement line and of the zoomed display in the A-scan
A-scan functionsManual or automatic A-scan freeze, A-scan comparison, echo dynamics (envelope), peak echo storage
Color functionsPatented color-coded display of legs in angle testing, adaptation of background color to the light conditions of test environment, color display of monitor gates and of registration curves (DAC, TCG, DGS) for direct recognition, messages and alarms in red characters
DAC / TCG (Option)Only USM 35X DAC and USM 35X S: Distance- Amplitude Curves (DAC) or TCG line (TCG) with a maximum of 10 reference echoes, 4 other curves or lines can be displayed with variable dB intervals. JIS DAC can be selected in order to allow inspection acording to JIS Z3060-2002 (Japanese Inspection Standard). Automatic gain control during DAC recording.
DGS (Option)Only USM 35X S: DGS curves for single-element and dual-element probes (B1S, B2S, B4S, MB2S, MB4S, MB5S, WB…-1, WB…-2, SWB…-2, SWB…-5, MWB…-2, MWB…-4, SEB and MSEB) and for all materials, sound attenuation and transfer loss correction, 4 other curves can be displayed with variable dB intervals
Display size / resolution116 mm x 87 mm, 4.6" x 3.4" (W x H)
320 x 240 pixels
A-scan size / resolution116 mm x 80 mm, 4.6” x 3.2”
320 x 220 pixels (zoom)
Units of measurementmm, inch
Data memory800 instrument setups or reports, including AScans can be stored, recalled, printed or exported to a computer.
Direct documentationDisplay screen contents, report including A-scan, reading, function list (parameter dump)
Printer driverHP DeskJet, HP LaserJet, HP DJ 1200 (DeskJet),HP LJ 1012 (LaserJet), EPSON FX/LX, SEIKO DPU
RS 232 interface9-pin DSUB, bi-directional, 300 - 57,600 baud An USB adapator cable can be provided to connect the USM 35X to a computer that does not have RS 232 port
Input/Output8-way Lemo-1 socket (trigger output, gate alarm, test data release)
Additional analog output for amplitude or sound path in selected gate
VGA output10-way Lemo-1 socket for the connection of an external display screen or beamer
Probe connections2 x Lemo 1 or BNC
Dialog languagesGerman, English, French, Italian, Portuguese, Spanish, Danish, Swedish, Norwegian, Finnish, Czech, Slovenian, Romanian, Dutch, Croatian, Hungarian, Russian, Polish, Slovakian, Japanese
Battery operationLi-ion battery or 6 C-cells (NiCad, NiMH or AlMn), operating time: 14 hours with Li-ion battery (6.6 Ah), approx. 3 hours with NiMH cells (3 Ah), battery charge check by an icon in the measurement line
Power pack/ battery charger operationVia an external power supply (85 to 265 VAC);
Operating voltage: 6 to 12 VDC
Current consumption: max. 9 W, depending on the setting
Weight2.2 kg, 4.9 lbs., including batteries
Size177 mm x 255 mm x 100 mm, 7.0" x 10" x 3.9" (H x W x D)
EnvironmentalProtection class: IP 66 Shock proof acc. to DIN IEC 68: 6 ms, 60 g, 3 shocks per orientation Vibration proof acc.
to DIN IEC 68: 0 - 150 Hz, 2 g, 20 cycles per orientation
Operating temperature: 0° to 60°C; 32° to 140°F (-10°C; 14°F on special request)
Storage temperature: -20° to 60°C; 4° to 140°F
Memory capacity5,000 readings, 500 A-scans for the readings, 100 jobs, 10 comment texts per job
Storable readingsSound paths and sound path differences of all gates, amplitudes (% SH, dB-to-threshold, dBto-curve, %-to-curve, ERS), alarms of all gates or tolerance monitor
Lines / columnsNumber of lines: maximum 5,000 (Linear file with one column), numerical indexing Number of columns: maximum 26, indexing: A, …, Z
Tolerance monitorLower and upper acceptance level with monitor function
Minimum reading captureStorage of the minimum value measured in continuous scanning, display of the value 3 seconds after uncoupling the probe
Monitor gate additional independent gate in color bar mode
USM 35 -