TX-1 Series Instrument
www.tensitron.com
pg. 14
7. ADVANCED OPERATION
•
General Calibration Precautions
1. To verify accuracy or to calibrate your instrument, hang a sample length of
material vertically, and suspend known weight(s) from the opposite end. (See
Figure 9.)
2. When performing this test, use a micrometer to measure your material
diameter and verify it is dimensionally within tolerance and not out of round.
3. Only use free-hanging weights which are traceable to National Standards.
4. Never use any tensioning device that attempts to convert rotational torque
values into tension loads, as these types of systems are highly inaccurate.
Also, any load cell system must be routinely checked for accuracy using
traceable weights, as these types of systems are also highly inaccurate and
generally do not meet minimum repeatable accuracy standards.
•
Check Accuracy
1. To check the accuracy of your meter, first hang the test material and suspend
weights from it as described in “General Calibration Precautions” above.
2.
Select from your meter’s menu the material type and material diameter
corresponding to your test material.
3. Before engaging the instrument onto the material, zero the instrument by
holding it in the same attitude you’ll be taking the readings, and pressing the
“Enter” or “Zero” button. This will eliminate any small tare effects.
4.
Take readings along the material.
FOR
BEST
RESULTS
ALWAYS
TAKE
SEVERAL
READINGS
OF
THE
MATERIAL
TENSION
BY
DISENGAGING
AND
THEN
RE-
ENGAGING
THE
INSTRUMENT
ON
THE
MATERIAL.
5.
If the meter is accurately calibrated, readings will fall within 1% of the full-
scale capability of the instrument:
▪
TX-125-1: +/- 1.3 grams
▪
TX-1000-1: +/- 10 grams
▪
TX-5000-1: +/- 50 grams
If you have additional questions, please contact Tensitron for assistance.
Figure 9: Free Hanging Weight
simulating cable tension.
