Checkline CTM - Manual (Page 6)

2.2 Measurement
Practices
Do not apply tension greater
than rated capacity of the
instrument or overload damage
to the sensor may result.
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.
For best measurement, install the CTM at least 2 feet (0.6 m) from termina-
tions, clamps or other hardware. Do not install over the top of wire wrap-
pings.
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.
Do not use the CTM to measure tension for wires if both of the following are
true:
1. No wire calibrations are stored of the same diameter as the wire you are
looking to measure, and
2. You do not have sheaves of the same diameter.
If both of these conditions exist, contact your distributor.
Contact your distributor to improve accuracy for a specifi c wire type by cali-
brating to it.
Insure that the wire rope is riding in the groove of all three sheaves.
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.
The CTM has an internal temperature sensor inside the electronics cav-
ity. Dramatic temperature changes (such as moving from a warm vehicle to
cooler outdoors) requires time for the sensor to reach the same temperature.
Direct sunlight will heat the electronics cavity and cause higher readings
than actual ambient temperature. In these cases, use a seperate thermom-
eter to determine temperature. Be certain to enter this temperature into the
CTM if using the quick-tensioning mode with the temperature dependent
acceptance window.
For best tension accuracy, use the exact temperature of the wire. This may
be widely different from the ambient temperature if the cable has been sitting
in direct sunlight.
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3.0 Confi guration Mode
You need to access the Confi guration mode to perform certain tasks. Access
to some of these tasks may be restricted by a supervisor password.
To access Confi guration mode:
1. From normal operating mode, press the Right Arrow softkey
A new softkey set, shown below, appears:
Units Temp Setup Config
Te ns ion lbf 7/16 6X 19
2. Press the Confi g softkey. . .
The following is displayed:
P as s word: 0_
Num Num Adv Enter
3. Use the Num and Adv keys to enter the Confi g password. Default is 0.
After the number is displayed, press the Enter key. . .
The following is displayed:
C onfig
Wire Setup Reso Comm
4. The unit is now in the Confi guration mode. To see the rest of the softkeys
available in this mode, press the Right Arrow key. All the Confi g softkeys
are shown below.
The Num keys increment and
decrement the displayed num-
bers. The Adv key moves the
cursor to the next digit position.
Default Confi guration pass-
word is 0. If a new password is
lost or forgotten, contact your
distributor.
3.1 Accessing the
Confi guration Mode
C onfig
Wire Setup Reso Comm
C onfig
Mode Units Power ChPwd
C onfig
Reset
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