SOP-TN-002 Rev. Q
T60 Operations and Service Manual
7
4-5.
TAKING TENSION READINGS, TYPE C9 -
The Type C9 cable Tensiometer is used in the same
manner as the Type C8 with the following exception: the larger size cables have two rows of preset
squares, one row identified by 250-, the other row identified by 250+. When measuring cable tensions
below 250 pounds use corresponding squares in the row indicated by 250- and conversely, for the
opposite condition, use 250+.(See Fig. 3.5)
Figure 3.5- Preset Instructions, Type C9
Note
: Shown figure is for reference purpose, actual dial may vary.
4-6.
DIFFICULT LOCATIONS
-
When taking readings among closely grouped cables or in awkward or
blind locations, let the actuating handle remain open with the instrument clamped on the cable. While
in this position, press the pointer lock button down. Remove the Tensiometer by compressing the
actuating handle against the case and remove. The dial indicator pointer will be locked in a position
directly over the tension reading obtained on the cable. To release this reading, press up on the
pointer unlock button.
Note: Do not attempt to take cable tension readings with the pointer lock button pressed down. If the pointer
lock button is depressed during a tension reading, a false reading will result due to the friction of the brake
mechanism.
4-7.
ACCURACY
-
Because of the uneven surface of stranded cable, slight variations in reading may occur
on the same cable at the same tension. This is especially true of 5/32-inch diameter cable and larger.
To obtain the greatest possible accuracy, take three to five readings at slightly different locations on
the cable. Average these readings to obtain the maximum degree of accuracy. Is consider
“
out of
tolerance
”
if not meet with the specification of following table 2:
Table 2- T60 Accuracy Tolerance
MODEL
RANGE
(LBS-TENSION
)
ACCURACY (+/-)
T60-C8
10-200
±5% of indicator or one minor division from dial scale whichever is
greater, values taken from dial scale average reading.*
T60-C9
150-450
±5% of indicator or one minor division from dial scale whichever is
greater, values taken from dial scale average reading.*
1
8
5
32
3
16
7
32
1
4
450
400
350
300
250
200
150
100
250-
250+
250-
250+
300
SET POINTER OVER CENTER OF LINE
WHEN READING TENSION LOADS
IN EXESS OF 250 POUNDS.
SET POINTER DIRECTLY
OVER CENTER OF
LINE TO THE CABLE DIAMETER
SET POINTER OVER CENTER OF LINE
WHEN READING TENSION LOADS
LESS THAN 250 POUNDS.
PACIFIC
CABLE TENSIOMETER
POUNDS TENSION
