SOP for Operation and Calibration of Torque Test Apparatus

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Standard Operating Procedure for Operation and Calibration of Torque Test Apparatus

Standard Operating Procedure for Operation and Calibration of Torque Test Apparatus

1.0 Purpose:

To lay down a procedure for Operation and Calibration of Torque Test Apparatus.

2.0 Scope:

The scope of this procedure is applicable for Operation and Calibration of Torque Test Apparatus (Make: Dr. Schleuniger Pharmatron, Model: TM 200).

3.0 Responsibility:

QC Personnel: To Operate, Clean, Calibrate and Verify the Torque Test Apparatus. To Prepare the Calibration Report.

Section Head QC/ Designee: To Check the Calibration and Verification Report of the Torque Test Apparatus. To Monitor the Activity.

Head QC/ Designee: To Approve the Calibration and Verification Report of the Torque Test Apparatus. To Monitor the Activity.

4.0 Definitions:

NA

5.0 Procedure:

5.1 Handle the Torque Test Apparatus carefully.

5.2 Ensure that the instrument is clean before and after every operation.

5.3 Press and hold the “START” button for 2 seconds. The display will show “U 01”.

5.4 Release the “START” button.

5.5 Use the 10s and 1s buttons to set the desired menu number.

5.6 Press and release the start button to select the menu item.

5.7 Choose user menu item number 2 by using the 1s button to change the display so that it reads “U 02”.

5.8 Set the minutes value with the 10s and 1s buttons and press “START” to save. The display will now show the hour value of the current time (2 XX).

5.9 Set the hour value with the 10s and 1s buttons and press “START” to save. The display will now show the hour value of the current time (3 XX).

5.10 Set the weekday value (1 = Sunday, 2 = Monday, etc.) with the 1s buttons and press start to save. The display will now show the hour value of the current time (4 XX).

5.11 Set the day of the month with the 10s and 1s buttons and press start to save. The display will now show the hour value of the current time (5 XX).

5.12 Set the month value with the 10s and 1s buttons and press start to save. The display will now show the first two digits for the year value of the current time (6 XX).

5.13 Set the first two digits of the year value with the 10s and 1s buttons and press start to save. The display will now show the second two digits for the year value of the current time (7 XX).

5.14 Set the second two digits of the year value with the 10s and 1s buttons and press start to save. The display will now return to 0.0.

5.15 Cleaning Procedure:

  • While Cleaning keep the Instrument in “OFF” Condition.
  • Wipe out outer surface with clean smooth cloth.
  • Ensure proper cleaning of Instrument.

5.16 Calibration Procedure:

• Insert the Calibration Arm into the mounting block that is affixed to the bottom front of the Torque Meter.

• Arrange the block in line with the center and tighten the calibration arm into position with the socket head cap screw.

• Insert the Calibration Cable Pins into the port located under and above the Calibration Disk Shoulder.

• Position the cable in such a way that one lies on the right and the other lies on the left of the Calibration Disk.

• Bring both cables over the Calibration Arm and allow the cables to hang freely.

• Press and hold the start button to access user menu, display shows “U01”, then release the start button. Choose user menu item number 03 by using first button to change display so that display now shows “U03”.

• Press and release the start button, display flashes “0000”. Display will show “7 00”, wait for a few minutes until second display shows “0.0”. At this point, the Torque Meter is taring the force on the load cell as zero. After a few more seconds, the display will read “2”.

• Keep a 2 kg hook weight on left calibration cable, allow it to stabilize.

• Gently press and release start button to take calibration value. Wait for the display to return to 0.0, then remove 2 kg weight.

• Press and release start button to calibrate counter anti-clockwise Torque.

• Display will show “7 00”, wait for a few minutes until second display shows “0.0”. After a few more seconds, the display will read “2”.

• Keep a 2 kg hook weight on right calibration cable and allow it to stabilize.

• Gently press and release start button to take calibration value. Exit function. Wait for display to return to 0.0.

5.17 Verification Procedure:

• Repeat the applicable steps above.

• Press and hold the start button to access user menu, display shows “U01”, then release the start button. Choose user menu item number 04 by using first button to change display so that display now shows “U 04”.

• Press and release the start button, display will show the current target value. Use the 10s and first button to adjust the display to the desired target value and press start.

• The Torque meter is now in Live Mode. Gently hang and release the weight on either the left or right cable depending on whether you wish to verify opening or closing torque respectively.

• Wait until the weight has stopped moving and is completely stable. You may use your hand to stabilize the weight more quickly.

• Push the print button on the front panel to print a comparison of the target and measured values.

• Repeat the step (as applicable) for other weights. To complete the Calibration Verification Report function and obtain a printout, press and hold the start button for 2 seconds.

6.0 Acceptance Criteria:

Sr. No.   Target Torque in Kg.cm (Open/Close)Acceptable Limit in Kg.cm
15.00.1
210.00.2
315.00.3

Torque =  Force  Distance

1kg =  15 cm = 5 Torque

2 Kg = 2 5cm=10 Torque

3 kg =3 5cm= 15 Torque

7.0 Frequency:

7.1 Operation: As and when required.

7.2 Cleaning: After every Operation.

7.3 Calibration: Half Yearly ± 15 Days.

8.0 Format for recording:

8.1 Instrument Usage Logbook

8.2 Calibration Report

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