FUTEK IHH300 (D530) Digital Display - Manual (Page 10)

Stop applying torque when you hear this sound, and press the clear key to stop the
buzzing.
The Torque Meter and torque transducers are factory calibrated and should be
checked on a regular basis. We recommend that, provided the transducers are used
according to this manual, they be re-certified yearly. Since the frequency of use,
among other factors, may affect the calibration, the user must determine the best
calibration interval.
It is important to use the correct arm length since arms that are too short may
create excessive bending loads.
4” 100 in lb
10” 250 in lb and 50 ft. lb.
24”
50 and 250 ft.lb.
48” 500 ft. lb.
These arm lengths closely represent the length of typical wrenches that will be
used on the transducers. They also allow for no more than 150 lbs of weights,
which also represents the “typical” amount of force required to generate the torque
with a wrench. Do not use a 10” arm to calibrate a 250 ft. lb. wrench. This would
require 300 lbs of weights, this is not good for the transducer and is not
representative of the typical weight needed to generate 250 ft.lb. applied by a
person. Most conventional torque wrenches are designed to be long enough to
allow a 150-175 lb person to generate the force required to generate the needed
torque. Using the above arm lengths will be consistent with this philosophy.
The accuracy of the meter is such that any incorrect zero caused by out of balance
arms, mis-alignment or sloppy adapters used on the torque arm system may cause
a “perceived”out of tolerance situation. This can happen when you use a female
drive torque arm on a female drive transducer and use a male-male adapter in
between. It can also happen when you use an adapter to reduce a ½” female drive
arm down to a 3/8” female drive using an off-the-shelf adapter. For this reason you
must always use the proper drive arm with the transducer. If the transducer is a ½”
female drive then you must use a ½” male drive torque arm.
Even benches that are not flat or deflect during high load calibrations are
unacceptable. In this case the transducer will not be perpendicular with the
Checking for accuracy
Recommended torque arm lengths:
1
16
The MV/v (cal factor) is in the lower digits.
Smart Transducers will show “Auto Xducer”
1. Activate the menu function by pressing the mode and
units key at the same time (the display will show set-up).
2.
Press the next key to step through the various options.
Press the save key to select the option that is displayed.
1. Press menu keys (set-up icon comes on).
2. Press the next key once or until the ”recall mem” icon is
on (if you miss keep pushing the next key until “recall
mem” shows.
3. Press save to select (SEL) the recall memory option.
The number of data in memory now shows.
4. Press the next key to view the data (press the increase
key to view the previous torque data).
5. Press the clear key when finished.
Note: The data number is shown in the upper right digits.
Menu functions:
To recall memory
0005
35.50
0005
9