Cooper Instruments WTM502-10K Installation Manual
66
WTM 502
QUICK-CHECK TENSION METER
USER’S GUIDE
http://www.cooperinstruments.com
TEL (540) 349-4746 • FAX (540) 347-4755
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................1
1.1 Unpacking.............................................................................................................. 1
1.2 Description ............................................................................................................1
1.21 Front Panel and Keys...................................................................................... 2
1.3 Important features................................................................................................. 2
2.0 OPERATION...................................................................................................2
2.1 Typical Operation..................................................................................................2
2.2 Measurement Practices ........................................................................................ 4
2.3 Softkey Functions ................................................................................................. 4
2.31 Top Level Softkeys...................................................................................... 5
3.0 CONFIGURATION MODE..............................................................................7
3.1 Accessing the Configuration Mode..................................................................... 7
4.0 CHANGING SHEAVES ..................................................................................9
5.0 ACHIEVING BEST ACCURACY ..................................................................10
5.1 Accuracy.............................................................................................................. 10
5.2 Calibration to Specific Wire Type ......................................................................10
5.3 Loading Error ......................................................................................................11
5.4 Non-repeatability................................................................................................. 11
5.5 Non-linearity ........................................................................................................11
5.6 Wire Characteristics ...........................................................................................11
6.0 TROUBLESHOOTING .................................................................................11
7.0 SPECIFICATIONS........................................................................................12
8.0 WARRANTY REPAIR POLICY ....................................................................13
LIMITED WARRANTY ON PRODUCTS ...................... Error! Bookmark not defined.
OBTAINING SERVICE UNDER WARRANTY.............. Error! Bookmark not defined.
REPAIR WARRANTY................................................... Error! Bookmark not defined.
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1.0 INTRODUCTION
= Tip
= Remember
With its battery-powered electronic interface, setup and operation is made simple with on-screen prompts.
This manual covers the following:
• Unpacking
• Setup
• Operation
• Maintenance
• Troubleshooting
1.1 Unpacking
When you receive your WTM 502, unpack it and inspect the container and the instrument for any
damage. Report any problems to the shipping company immediately and save the packing materials.
Insert 2 AA batteries into the battery compartment, shown in Figure 1. Your WTM 502 probably comes
from the factory with the proper sheave size installed and calibrated for your application. If not, follow the
setup directions later in section 3.0 configuration Mode and 4.0 Changing Sheaves.
1.2 Description
This manual covers the setup and operation of the WTM 502 Clamp Line
Tensionmeter from Cooper Instruments. The WTM 502 is a simple,
accurate strand dynamometer. It is can be clamped onto a cable, accurately
determine the wire tension and be removed in seconds.
The WTM 502 can handle multiple wire diameters, it can display live
tension, dual live/peak tension, average tension captured from several
tests, dual tension/temperature display and a check-tensioning graphical
display.
The WTM 502 is shown in Figure 1 with the parts labeled.
FIGURE 1. WTM 502 PARTS
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1.2.1 Front Panel and Keys
The front panel of the WTM 502 is shown in Figure 2.
FIGURE 2. WTM 502 FRONT PANEL
Following are descriptions of the keys and their functions:
ON/OFF key. Press this key to power up and turn off the WTM 502.
ESC key. Press this key to escape an area of the menu or to clear the field when in data
entry mode.
WIRE key. Press this key to change the wire diameter you are testing with the WTM 502.
Choose from the listed selection when the desired size is highlighted, press the ENTER
softkey. Up to 15 sizes available.
Soft key. Softkey function changes as needed for different tasks. The soft key labels appear
above the keys themselves. You will use these for operation and configuration
Arrow key. Press this key to reveal more softkeys in a group of softkeys.
1.3 Important features
Quick to use Attaches and removes from tensioned line in seconds. Quick-tensioning
readout for ultra fast line tensioning.
Direct tension readings No more complicated lookup charts! Save time and improve accuracy
Portable & rugged Designed for outdoor use.
Accurate Employs Weigh Bar® technology used for precise weighing.
Multiple wire size storage Stores up to 15 different calibrations.
2.0 OPERATION
Typical operation of the WTM 502 is covered below, followed by explanations of the various display
modes, how to change wire size, how to change the unit of measure, etc.
2.1 Typical Operation
To perform a typical tension measurement, see the Tip below and follow these steps:
1. Turn the unit on by pressing the ON/OFF key…
The display shows DILLON briefly, then, in this example, the screen shows the following:
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Sample display
2. This example shows the wire is a 7/16”, 6X19 stranded cable and the unit of measure is lbf. Place the
WTM 502 so the two outside sheaves hang on the wire. Insure that the wire rope is riding in the
groove of all three sheaves. See Figure 4. Press the Zero softkey to zero the display
0 should be displayed.
3. Raise the lever arm until it locks in the upright position to apply tension to the wire. Read the line
tension on the display.
4. Release the lever arm and you are ready to perform another measurement.
FIGURE 4. WTM 502 ATTACHED TO CABLE
Take readings at three different places along the cable, moving the tension meter at least four
inches for each reading. Take the average of the readings. The built-in average function is ideal
for this task.
The handle quick release pin should be used when the WTM 502 is attached to a cable that will
be de-tensioned and retensioned. The pin prevents the handle from opening once the tension
falls to a small level. The pin should also be used if the WTM 502 will be installed for a prolonged
period.
Press the WIRE key to list the stored calibrations.
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