9) Enter the name of the units grams in the box below the weights. Click on the
OK button in the lower right corner of the window to activate the units conversion.
In the 10 gram range the FT-302 will deliver approximately 75 mV/gram at X1 gain
and approximately one tenth of that in the 100 gram range. From the graphs in the
technical data section of this manual you can see that the sensor is actually linear
to about 14 g in the 10 g range and about 140 g in the 100 g range. This upper limit
will vary from transducer to transducer but will never be less than 10/100 g. The
FT-302 is now ready for use.
Experiments
LabScribe experiments using the FT-302 Force Transducer include:
•Experiment AM-2: Skeletal Muscle Summation (found in the Animal
Muscle category of the LabScribe Settings menu as SkeletalMuscle-
Summation-Tetanus)
•Experiment AM-3: Heart Muscle (found in the Animal Muscle category of
the LabScribe Settings menu as HeartMuscle)
•Experiment AM-7: Crayfish Heart (found in the Animal Muscle category of
the LabScribe Settings menu as CrayfishHeart)
•Experiment AM-8: Mytilus Anterior Byssal Retractor Muscle (found in the
Animal Muscle category of the LabScribe Settings menu as ByssalMuscle)
•Experiment AM-9: Crayfish Gut Pharmacology (found in the Animal
Muscle category of the LabScribe Settings menu as
CrayfishGutPharmacology)
•Experiment AM-10: Summation Tetanus and Fatigue in an Intact Nerve-
Muscle Prep (found in the Animal Muscle category of the LabScribe
Settings menu as FrogNerveMuscle)
•Experiment AM-11: Earthworm Smooth Muscle Contractions (found in the
Animal Muscle category of the LabScribe Settings menu as
EarthwormSmoothMuscle)
Technical Data and Specifications
How It Works
The FT-302 uses a reflective photomicrosensor to optically measure the distance
of the blade from the sensor. The beam is positioned so that it stays within the
initial linear region of the graph. As a result beam movement at the 10 g point of
attachment is limited to less than 500 µm and movement at the 100 g attachment
point is approximately half that. Since the sensing technology is optical there is no
thermal drift. The sensor requires an amplifier/conditioner with an excitation voltage
of ±5 V. Full-scale voltage output swing for either range is approximately ±1 V so
amplification requirements for the conditioner are minimal. Since the FT-302 has
no integral cable detachable cables are used to connect to amplifiers and
FT-302 Force Transducer
iWorx Systems Inc.
www.iworx.com
