14
3.6 Air Damping
(Optional Accessory Code
A
)
fig. 3.6a
Air damping with
slotted screw
fig. 3.6b
Air damping with
hex-head screw
3.7 Memory Pointer
(Optional Accessory Code
M
)
Memory pointer
Knurled screw
The tension meter Model DX2 can be factory-equipped with a
memory pointer for retaining the highest reading obtained during
a measuring period.
This is achieved by a memory pointer which trails the scale
pointer and stops at the highest tension reading (PEAK value)
obtained during the measuring period.
To reset the memory pointer before a new measuring period:
- Set the memory pointer to zero manually with the
knurled screw.
fig. 3.7
Setting the dashpot:
- Screw in the setscrew clockwise as far as it will go = maximum possible damping.
The screw is protected against overwinding. The damping is now at its maximum
setting.
- Turn the setscrew counterclockwise until the desired damping of the pointer is
reached, and the pointer swings are minimal.
The setting range is three counterclockwise revolutions, starting from the maximum
setting.
During operation, as in spooling or winding machines, high frequency tension
fluctuation can occur. This process fluctuation can result in rapid pointer swings which
make it difficult to read the scale. This effect can be reduced by using the built in
Air Dashpot Damping mechanism. The dashpot is infinitely variable and ensures the
best readable pointer results with minimum pointer swings.
The air dashpot is built in during production of the tension meter and can therefore
not be retrofitted.
Dashpot
Turn setscrew clockwise
= Increase damping
Turn setscrew counterclockwise
= Decrease damping
