barfield CT12A - Holding a Tension Measurement; Use of the Verification Bar

CT12A INSTRUCTION MANUAL
56-101-03100-E CH. 3
May
/ 29 / 09 Page 16 of 19
 The unit will be ready to start the measurement procedure at a new location of the ca-
ble, or at a new cable, as soon as the lever is opened from the third reading and the
LED stops blinking.
8. HOLDING A TENSION MEASUREMENT
While the CT12A is clamped onto the cable, pressing the MEASURE
/ HOLD button will
hold the value in the display window. The Hold feature is especially helpful when the dis-
play is not in the line of sight, such that the user will need to remove the CT12A from the
cable to take the reading. The value in the display window will remain frozen until the
MEASURE
/ HOLD button is pressed again to release the Hold Mode. The LED will blink,
indicating that the Hold Mode has been deactivated. If this action does not occur, move
the lever towards and away from the body of the unit and observe if the LED blinks.
9. USE OF THE VERIFICATION BAR
The purpose of the Verification Bar is to give the user of the CT12A assurance that the unit
is performing within specifications. The Verification Bar can be used at any time and as of-
ten as needed.
Note:
If the CT12A is dropped, verify the unit before using it again.
The CT12A and the Verification Bar are a matched set: a particular CT12A must be verified
only with its own Verification Bar, and a Bar must not be used with a CT12A other than its
match. Make sure that the bar is always identified by keeping its tag attached.
The CT12A
and the Verification Bar that belongs to it should always be calibrated together.
The Verification Bar should be treated with care. If the Bar is stressed mechanically so it is
permanently deformed, as would occur if used with a pair of risers that are different from
the one specified here, or if any other load is applied outside of what is intended, the bar
will no longer be useful and a new bar will need to be calibrated to the unit. Check the Bar
periodically and discontinue use if damage is found.
To use the Verification Bar:
Make sure the Verification Bar you are using has the same serial number as the CT12A
model you are verifying.
If you have a multi-riser CT12A model, set the risers to the position number and configure
the CT12A to the cable diameter indicated on the Bar tag or as per the Table 3, following
the procedures indicated in Section 6.