CALIBRATION OF BROOKFIELD VISCOMETER

Procedure:

Ensure that all the connection of the instrument is proper.

Turn the viscometer ON.

Take out the viscosity standard solution in 500ml beaker, adjust the temperature to 25° C. Attach the
required spindle, adjust required speed & measure the viscosity, not e down the constant reading.

Viscosity standards, speeds, spindles required & tolerance limits are as follows:

Sr. No	Viscosity of standard in cps	Actual viscosity of standard in cps	Spindle No.	Entry Code	RPM	Tolerance (in cps)
						Minimum	Maximum
1.	5.00	4.70	ULA	00	60	4.55	4.85
2.	50.00	48.40	LV1	61	60	46.9	4909
3.	5000.00	4820.00	LV3	63	10	4651.83	4988.17

Acceptance criteria

Viscosity should be within the tolerance limits.

Do not transfer the viscosity solution to the original container back after use.

Precautions

Take due care to avoid any contamination of the standard solutions.

Avoid air bubble entrapment during transfer of standard solutions.

Frequency

Once in 6 months.

Maintenance / Repairs:

When the instrument do not comply with the requirement/ tolerance range specified above, the instrument should be labeled “OUT OF CALIBRATION” and should be repaired / served.

 

 

QUALITY ASSURANCE DEPARTMENT

CALIBRATION REPORT OF BROOKFIELD VISCOMETER

Reference-                                                                                         Date –

Frequency – Once in 6 months                                                  Instrument No-

Make – Brookfield Engineering Laboratories, Inc.              Model – LVDV – II + Pro

Take out the viscosity standard solution in 500ml beaker, adjust the temperature to 25°C & attach the required spindle, adjust required speed & measure the viscosity, note down the constant reading.

Sr. No	Viscosity of standard in cps	Actual viscosity of standard in cps	Observed Viscosity CPS		Tolerance (in cps)		Remarks (S / NS)
					Minimum	Maximum
1.	5.00	4.70			4.55	4.85
2.	50.00	48.40			46.9	4909
3.	5000.00	4820.00			4651.83	4988.17
Conclusion: Calibration is satisfactory (S) / not satisfactory (NS)
Next Calibration Due On:
Done By: Date:				Checked By: Date: