16
、
Table of sound velocity
15
、
Notices for users
－
15
－
－
16
－
14.3. This ultrasonic thickness gauge is a high-tech product,
so the maintenance work should be subject to
professional staff. Please do not disassemble and repair
the instrument on your own.
15.1. Warranty and Maintenance Regulations
After you purchase our company's products, please fill in
<warranty registration card> and stamp official seal. If our
products have quality problems within one year from the date of
purchase (excluding products of non-warranty), please send
purchase invoice and warranty card (or photocopy) to customer
service department of our company within warranty period. Our
company will not guarantee warranty for users with no warranty
card .
If warranty period (one year) expires, local agencies will be
responsible for after-sales service and maintenance for
products of quality problems,. Besides, the maintenance fee
will be charged according to our company's regulations. The
maintenance fee for "special configuration" out of our
company's regular products will be charged according to
relevant standards.
Our company does not guarantee warranty for the following
circumstances: any user's disassembling products on his/her
own, improper transportation or storage after purchase,
product damage caused by improper operation and not
following product manual, defacement of warranty card, and no
purchase certificate.
15.2. Non-warranty list
Color screen, battery, probe, test sample, case, coupling agent.
Sound velocities of common materials
SUS
Aluminum
Zinc
Silver
Gold
Tin
Iron/Stee
Brass
Copper
Acrylic resin
Water
（
20
℃）
Glycerinl
Soluble glass
2670
3530
4430
5440
5720
6310
6020
5630
5850
5660
6070
4650
2620
Acetate resin
Phosphor bronze
Turpentine
Glass
Incoloy alloy
Magnesium
Monel alloy
Nickle
Steel 4330
（
mild
）
Steel 330
Titanium
Zirconium
Nylon
6320
4170
3600
3240
3230
5900
4640
4700
5790
2730
1480
1920
2350
Material
Velocity(m/s)
Velocity(m/s)
Material
