GSC TMRSOL User manual

1
GSC International
Phone: [phone]
Fax: [phone]
Toll Free: 888.756.4592
[e-mail]
2076 James River Court
Nixa, Missouri 65714
Introduction
Accurate timers are essential in the lab. Operating instructions for the
timer below are on the following page.
Intelligent Timer for Photogates and Solenoids
#TMRSOL
Warning:
•Not a toy; use only
in a laboratory or
educational setting.
•California Proposition
65 Warning: This product
can expose you to
chemicals including styrene and lead, which are
known to the State of California to cause cancer,
birth defects, or other reproductive harm. For more
information go to www.P65Warnings.ca.gov.
Parts and Buttons
1 2 3
4
5
86 7 9 10 11
12
1. Port for Photogate 1
2. Port for Solenoid
3. Display
4. Mode Dial
5. Port for Photogate 2
6. Start Button
7. Mode Button
8. Set Distance Button
9. Store Memory Button
10. Result Button
11. Reset Button
12. Power Cord

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Working of “Intelligent Timer with Solenoid” With “Inclined Plane” and “Loop The Loop
Apparatus”
1. Connect the photo gates with the apparatus by using connecting lead (EPST male – EPST male).
Photo gate of “Inclined Plane” or “Loop The Loop Apparatus” which is connected on Gate 1 EPST
Female Socket on apparatus will act as IN Gate for passing object and the photo gate of “Inclined Plane”
or “Loop The Loop Apparatus” which is connected on Gate 2 EPST Female Socket on apparatus will act as
OUT Gate for passing object.
2. Select the working mode “Inclined Plane” or “Loop The Loop Apparatus” whichever is required at present.
3. Plug-in the power cord with an input of 90-240V AC.
4. Press the switch “MODE” once to select the mode of distance on the device.
5. Now press the “SET DISTANCE” key to set the distance as equal to the distance between photo gates, actually.
Resolution of the set distance is 100mm.
6. Now press the “MODE” switch again, to enter this device in “TIME” mode, as the object will enter from
gate1, the timer will start and as the object will exit through gate2, the timer will stop.
7. The result on LCD will be the time taken by an object to enter from gate1 and exit from gate2 within a
distance.
*The unit will be “SECOND” for this “TIME” result.
8. As again you will press the “MODE” key the device will enter in the “SPEED” mode and it will show you
the auto calculated result for the speed of that object which entered from gate1 and exit from gate2. This
calculation is done by the device through microcontroller programming.
9. Press the “MODE” key again, the device will enter in the “ACCELERATION” mode and it will show you the
auto calculated result for the acceleration of that object which entered from gate1 and exit from gate2. This
calculation is done by the device through microcontroller programming.
10. To store these results of “TIME, SPEED & ACCELERATION” you can press the “STORE MEMORY” key.
This device can store up to 10 results only.
11. Repeat all of above steps to obtain the more observations for your experiment.
12. Now you can press the “RESULT” key to see the “TIME, SPEED & ACCELERATION” together for all your
previous observations. Even after the power cut, your results will remain store.
13. To delete all the previous stored results, press the “STORE MEMORY” key continuous for 3 seconds, a
message for “DELETING...” then “MEMORY DELETED!!” will show up.
14. Press the “RESET” key to initialize the device again for new experiments.
(Press the “RESET” key, if any unexpected result shown during experiment.)

3
Working of “Intelligent Timer with Solenoid” With “g By Free Fall Apparatus”:
1. Connect the photo gates with the apparatus by using connecting lead (EPST male – EPST male).
Connect the Upper Gate of “g By Free Fall Apparatus” on Gate 1 EPST Female Socket on apparatus and
connect the “Lower Gate” of “g By Free Fall Apparatus” on Gate 2 EPST Female Socket on apparatus.
2. Connect the Solenoid to the Solenoid EPST socket on the apparatus.
3. Select the working mode “g By Free Fall” on the apparatus.
4. Plug-in the power cord with an input of 90-240V AC.
5. Touch the Steel Ball to the core of Solenoid.
*The steel ball will remain in touch with the solenoid core. Because the solenoid core is magnetize during
the power ON of apparatus.
6. Press the switch “MODE” once to select the mode of distance on the device.
7. Now press the “SET DISTANCE” key to set the distance as equal to the distance between photo gates, actually.
Resolution of the set distance is 100mm.
8. Now press the “MODE” switch again, to enter this device in “TIME” mode.
9. Press the “Start” button provided on the apparatus to release the steel ball from the solenoid.
10. As the object will enter from gate1, the timer will start and as the object will exit through gate2, the timer will
stop.
11. The result on LCD will be the time taken by an object to enter from gate1 and exit from gate2 within a distance.
*The unit will be “SECOND” for this “TIME” result.
12. As again you will press the “MODE” key the device will enter in the “SPEED” mode and it will show you
the auto calculated result for the speed of that object which entered from gate1 and exit from gate2. This
calculation is done by the device through microcontroller programming.
13. Press the “MODE” key again, the device will enter in the “ACCELERATION” mode and it will show you the
auto calculated result for the acceleration of that object which entered from gate1 and exit from gate2. This
calculation is done by the device through microcontroller programming.
14. Repeat all of above steps to obtain the more observations with different distance set between two gates.
(more on next page)

4
Observation Table:
Sr No. Distance Between Gates Time g=2S/t²
Formula Used:
S = ut + ½ at
• Where s = Distance between metallic sphere and sensor plate
• t = time taken by the ball to reach at the sensor plate
• u = initial speed of the ball
• a = acceleration of the metallic sphere, Now a = g in vertical direction
• As the initial speed of the metallic sphere is zero
• Therefore
• 2 2 S = ½ gt => g = 2s/t
• Put all the value in the formula and calculate the acceleration due to gravity.