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HUGO SACHS ELEKTRONIK - HARVARD
A P P A R A T U S
GmbH D-79232 March-Hugstetten Germany
HSE PLUGSYS
®
TAM-A Type 705/1 and TAM-D Type 705/2
Application note:
Adaptation of a force transducer to a PLUGSYS TAM-A module
Before using a force transducer (e.g. F10, F30 or K30, K100, K1000) together with a
Transdcuer Amplifier Module TAM-A or TAM-D you have to do some adjustments and to per-
form a calibration.
As the different transducers deliver a different voltage signal first the GAIN on the amplifier
board must be set. Therefore you have to pull out the module from the housing. To do that
just open the upper and the lower screw (with a PHILIPS screwdriver) on the front panel
and pull the module out.
Coarse GAIN is adjusted on the jumper row J2.
Set GAIN for the transducers as follows:
F10
x 50 ... x200 depending on wished range (see table chapter 4.2.4)
F30
x100 ... x500 depending on wished range
K30
x200 ... x500 depending on wished range
K100
x100 ... x500 depending on wished range
K300
x100 ... x500 depending on wished range
K1000 x100 ... x500 depending on wished range
After you have installed the jumper in position install the module back in the housing and close the screws.
Switch on main power and connect the transducer to the module.
TAM-A basic settings:
•
Lowpass Filter on 300 Hz
•
Move the switch CAL/OFF/ MEASURE in MEASURE position
First step is the Zero adjustment:
•
Remove load (weight) from the transducer
•
Adjust Zero by pressing the AUTO ZERO button on the TAM module for 3 seconds
•
The red LED light above the button lights up during automatic zero adjustment. If
the module can not adjust zero the red LED light starts blinking, first is to check if
switch CAL/OFF/ MEASURE is really in MEASURE position.
•
If the module can not adjust Zero you have to adjust Zero manually with the
COARSE trimmer below to the AUTO ZERO button. Take the delivered little red screw-
driver and adjust zero, so that you see only one bar on the bargraph module at zero
position. If you have a voltmeter available, connect it to the OUTPUT BNC socket.
Zero Pressure should lead to 0V on the output.
•
After manual adjustment repeat ZERO adjustment by pressing again the AUTO ZERO
button for 3 seconds. This time the module should be able to adjust Zero automati-
cally. LED is no longer blinking.
Upper Calibration point / setting of measuring range
First you should think about the measurement range you intend to use. The range is the
area where you expect your measured signals.
In case of force signals and the differnt transducers a range the range can be wide.
The range and the GAIN (amplification) run contrary. If you use more GAIN the range gets
smaller, if you use less GAIN the range gets larger.
As an example let say the range should be up to 10g (approx 10cN = 100mN)
