The Panametrics-NDT™ Model 25 MULTI PLUS is an advanced ultrasonic precision thickness gage with several unique measurement capabilities. In addition to making thickness measurements on metal, plastic and many other materials with varying thickness ranges, the 25 MULTI PLUS has the ability to calculate and simultaneously display up to four separate measurements. The Summation Mode accurately displays total thickness of selected layers.
Another unique feature of the 25 MULTI PLUS is the Barrier Layer Mode. This feature makes it possible to measure critical barrier layers in multilayer plastic parts such as gas fuel tanks and bottle preforms. This special Mode displays the thickness of thin barrier layers that are typically too difficult to measure with conventional ultrasonic thickness gages because of lack of separation between the echo from the front and back of the barrier layer.

The 25 MULTI PLUS is ideal for the following applications:
• Multilayer fuel tanks
• Multilayer plastic bottle preforms
• Calculating radius of curvature and the thickness of contact lenses
• Multilayer aircraft windows
• Co-extruded plastic
• Two layer hot tubs and spas
• Two layer automotive air intake ducts

Features

• A-scan Display for Waveform Verification
• Wide Thickness Range: 0.003" to 20.000" (0.08 mm- 508.00 mm)
• Resolution up to 0.0001" (0.001 mm)
• Uses Contact, Delay Line, and Immersion transducers
• Internal Alphanumeric File-Based Datalogger stores 18,000 thickness or 1,750 waveforms
• Application Auto-Recall with Stored Standard and Custom Setups

The 25 MULTI PLUS calculates and simultaneously displays thickness measurements of up to four individual layers. It also displays total thickness of selected layers.The 25 MULTI PLUS measures thickness of barrier layers in applications such as plastic fuel tanks and bottle preforms.

25 MULTI PLUS Specifications*

Measurements

Mode 1:	Time interval between excitation pulse and first backwall echo, using contact transducers.
Mode 2:	Time interval between the first interface echo after the excitation pulse and the first backwall echo, using delay line or immersion transducers.
Mode 3:	Time interval between successive backwall echoes following the first interface echo after the excitation pulse, using delay line or immersion transducers.

Thickness Measurement Range:

Steel:	0.006 - 20.000 inches (0.150 - 508.00 mm)†
Plastic:	0.003 - 2.0000 inches (0.08 -50.00 mm)†

Thickness range depends on material, transducer, surface condition,temperature, and SETUP selected.

Barrier Layer Plastic Mode:
Only for Mode 1 and 2, Thickness Range
0.004 - 0.020 inches (0.100 - 0.50 mm).*

Multilayer Measurement Mode:
Simultaneously displays up to four thickness measurements.
Summation Mode: Displays the sum of up to three layer thickness measurements.
Material Velocity Range:
0.02000 - 0.55110 inch/µS
(0.5080 - 13.9979 mm/µS)
Resolution: (keypad selectable)

LOW:	0.01"	0.1 mm
STANDARD:	0.001"	0.01 mm