Dynasonics WT-1 User Manual

DESCRIPTIONS

SPECIFICATIONS

ULTRASONIC THICKNESS GAUGE

WT-1

[e-mail]

dynasonics.com

FEATURES

Micro-computer circuit and crystal time base high

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accuracy measurements.

With high power transmission and sensitive

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reception, the WT-1 can be utilized on a wide
range of applications including pipes with rough
surfaces.

Ability to measure the thickness of many pipe

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materials; including Steel, Cast iron, Aluminum,
Red copper, Brass, Zinc, Quartz glass,
Polyethylene, Ductile Cast Iron and PVC/CPVC.

Automatic power shut off.

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1

2

5

4

7

10

1. Ultrasonic Sensor Plug (2)

2. Coupling Indicator

3. Ultrasonic Sensor

4. Calibration Key

5. Material Selection Key

6. Unit of Measure Key

7. Up (+) Key

8. Down (-) Key

9. Velocity Key

10. Power Key

11. Calibration Block

6

9

8

11

Display: LCD

Range: 1.0 - 200 mm (45# steel)

3

Resolution: 0.1 mm/0.001 inch

Accuracy: ±0.5%n+0.1 mm

Sound Velocity: 500 - 9000 m/s

With: Bluetooth interface

Power Supply: Four AAA cells

Operating Temp: 0 - 104 ºF (0 - 40 ºC)
Condition: Humidity: <80%

Size: 4.7" H x 2.4" W x 1.2" D

(120 mm x 62 mm x 30 mm)

Accessory: Carrying case, ultrasonic sensor,
manual, and grease couplant

CALIBRATION PROCEDURE

1.

Place a BB-sized drop of couplant on Calibration Block.

2. Press the Calibration Key. 'CAL' will show on the
display.

3. Position Ultrasonic Sensor on the Calibration

(•)

Block. When reading on Coupling Indicator (
steady at '0.197' inch ('5.0' mm) and 'CAL' is
shown on the display simultaneously, press
Calibration Key to confirm. Unit will return to state
of measurement.

4. The calibration result will be auto-saved to the unit
once confirmed. It is unnecessary to calibrate
often unless you suspect the accuracy of
measurement.

) is

BATTERY REPLACEMENT

1. When battery symbol appears on the display, it is
time to replace the batteries.

2. Slide Battery Cover away from instrument and
remove batteries.

3. Install batteries paying careful attention to polarity.

MEASURING PROCEDURE

1. Press the Power Key to turn on the unit.

2. Press the Material Selection Key. Display will show
the code 'Cdxx' or 'xxxx'. 'Cd' is abbreviation for
'code' and 'xx' is one number among 01-11.
'xxxx' is a 4-digit number which is the sound
velocity of material defined by the user. (Refer to
Material Selection Chart).

3. Press the Up (+) Key or Down (-) Key to select the
material code to measure. Then press Material
Selection Key to confirm. Display will show '0'.

4. Press the Unit of Measure Key to select the right
measurement unit.

5. Place a BB-sized drop of couplant on the material
to measure and lightly press Ultrasonic Sensor
onto the material surface. Be sure the sensor is

(•)

secure and the Coupling Indicator (
reading on display is the measurement value.

6. The reading is held until a new measurement
value is measured. The last value is held on the
display until the power is off.

) is on. The

MEASURING NON-STANDARD MATERIALS

If the pipe wall material is not listed in the "Material
Selection Chart", the sound speed velocity can be
entered manually in m/s (meters/second).

1.

Press Velocity Key and display will show one of the
material codes shown in the "Material Selection
Chart" or a 4-digit number (selection 12 in chart)
which is a user adjustable sound speed velocity value.

2. How to measure pipe wall thickness by the
velocity known?

The velocity can be changed by pressing the Up
(+) Key or Down (-) Key to the value of known
velocity. The increment is 10m/s every short Up
(+) Key or Down (-) Key press. Faster increments
will occur if the Up (+) or Down (-) Key is pressed
and held for more than 4 seconds.

3. Place a BB-sized drop of couplant on the material
to measure and lightly press Ultrasonic Sensor
onto the material surface. Be sure the sensor is

(•)

secure and the Coupling Indicator (
reading on display is the measurement value.

) is on. The

MATERIAL SELECTION CHART

Code MaterialNo.

Cd01 Steel1

Cd02 Cast Iron2

Cd03 Aluminum3

Cd04 Copper4

Cd05 Brass5

Cd06 Zinc6

Cd07 Quartz Glass7

Cd08 Polyethylene8

Cd09 PVC9

Cd10 Gray Cast Iron10

Cd11 Ductile Cast Iron11

xxxx Sound Velocity12

7. Two modes to turn off the power:
Manual off at any time by pressing the power key
or Auto power off after 1 minute from last key
operation.

4. If the sound speed velocity of the pipe material is
unknown and a sample of the material is available,
the sample can be utilized to configure the WT-1.
Measure the thickness of the sample piece and
repeat steps 2 and 3 above (higher sounds speed
velocity inputs will result in greater thickness
measurements - lower sound speed inputs in
thinner measurements) until the WT-1 indicates
the correct thickness. Record the velocity for
future use. Just get a sample of known thickness.
Then repeat Step 2 and 3 until the measurement
value is same as the known thickness. In such a
case, the set value is the velocity of the material to
measure, by which you can measure any
unknown thickness of same material.

5. To view the present configured sound velocity,
press the Velocity Key. To quit browsing, press the
Velocity Key again or wait until the meter
automatically shows '0'.

6. By use of velocity measurement, it is easy to
measure the thickness of any hard materials.

MATERIAL SELECTION NOTES

lf you select a material code but do not confirm the
selection, the code will automatically change to '0'
after several seconds. In such case, the meter will
still reserve the material code before exiting.

A 4-digit custom sound speed velocity value
(meters/second) will be shown on the display if item
12 on the Material Selection Chart is selected.

To view the material code selected, press the
Material Selection Key. To exit, press the Material
Selection Key again or wait until the code
automatically changes to '0' after several seconds.

04/12 Form No. 06-SEN-UM-00465