Checkline CTM - Manual (Page 3)

1.0 Introduction
1.1 Unpacking
1.2 Description
This manual covers the setup and operation of the CTM Clamp Line Ten-
siometer. The CTM is a simple, accurate strand dynamometer. It is can be
clamped onto a cable, accurately determine the wire tension and be re-
moved in seconds.
The CTM 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.
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
When you receive your CTM, 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
CTM 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 Confi guration Mode and 4.0 Changing Sheaves.
The CTM is shown in Figure 1 with the parts labeled.
Sheaves
Lever arm
Support arm
Front panel
Battery
compartment
Figure 1
3
4.0 Changing Sheaves
As you use the CTM on different diameter cables you must change to the
correct sheave size. To change sheaves, remove the hex head screws
pointed out in Figure 6 below. Replace the sheaves with the correct letter
sheave and reinsert the screws and tighten.
Insure sheaves installed agree with sheaves noted in the Wire calibration.
Exception: Sheaves match the wire diameter of the cable to be measured
and alternate calibration is selected as per section 5.2.
Insure that the wire rope is riding in the groove of all three sheaves.
Screws
Figure 7
Changing sheaves
Do not use the CTM with cable
larger than indicated on the
sheaves. Overload and dam-
age to the instrument may
result.
Do not mix sheave sizes. This
will result in inaccurate mea-
surement and possible over-
load.
14