Bubble Viscometers A5-A1 / A-T / U-Z6 / Z7-Z10

Size: px

Start display at page:

Download "Bubble Viscometers A5-A1 / A-T / U-Z6 / Z7-Z10"

Clementine Griffin
6 years ago
Views:

1 Measure what you see. Bubble Viscometers A5-A1 / A-T / U-Z6 / Z7-Z10 Manual A member of Additives & Instruments

Bubble Viscometers A5-A1 / A-T / U-Z6 / Z7-Z10 Manual English PV-0500 Series PV-0600 Series BYK - Gardner USA 9104 Guilford Road Columbia, MD 21046 USA Phone 800-343-7721 301-483-6500

2 Bubble Viscometers A5-A1 / A-T / U-Z6 / Z7-Z10 Manual English PV-0500 Series PV-0600 Series BYK - Gardner USA 9104 Guilford Road Columbia, MD USA Phone Fax BYK-Gardner GmbH Lausitzer Str. 8 D Geretsried Germany Tel gardner ( ) Fax

3 DIRECTIONS FOR USING THE GARDNER BUBBLE VISCOMETER A-5 to A-1 CAT. NO. PV-0500 This instrument is based on the principle that the viscosity is directly proportional to the bubble speed. The viscosity of a sample of varnish or other transparent liquid is therefore determined by reference to the standard tubes in which an air bubble rises with the same speed as it does in a tube of the sample being tested. For this purpose two carefully calibrated empty tubes are furnished with each set. The bubble size of the sample is first adjusted as nearly as possible to that in the standard tubes. The tubes are then brought to a temperature of 25ºC (77ºF). This is essential due to the difference in the temperature coefficient of viscosity of mineral oils and varnishes. It is suggested that a water bath be used, which quickly brings the tubes to the proper temperature and insures greater accuracy. The bubble should be started from the flat end of the tube held in a true vertical position. The bottom meniscus of the bubble should be used for comparing the samples. It is only necessary that they start together. Owing to unavoidable differences in bubble sizes and in the shapes of the ends of the tubes, it may be necessary to raise one of the tubes so that the points of comparison will be on the same level. The observation is made after the bubbles are completely formes and moving upwards along a true vertical line. This takes place about 1½ to 2 cm from the bottom of the tube. The standard empty grade A tubes have been carefully selected to and I.D. of ± mm. and should be used for exact determinations. However, this close tolerance is relatively expensive, and for the sake of economy, tubes 2

4 having the same approximate diameter with a tolerance of ± mm. Grade B are used by many manufacturer for general factory control tests. This viscometer meets the requirements of ASTM D 154, D 555, D 1131, D 1545, D 1725, FTMS 14la-Method 4271, and AOCS Method Ka6. Approximate Viscosity in Stokes at 25º C (77º F) A A A A A

5 DIRECTIONS FOR USING THE GARDNER BUBBLE VISCOMETER A to T CAT. NO. PV-0510 This instrument is based on the principle that the viscosity is directly proportional to the bubble speed. The viscosity of a sample of varnish or other transparent liquid is therefore determined by reference to the standard tubes in which an air bubble rises with the same speed as it does in a tube of the sample being tested. For this purpose two carefully calibrated empty tubes are furnished with each set. The bubble size of the sample is first adjusted as nearly as possible to that in the standard tubes. The tubes are then brought to a temperature of 25ºC (77ºF). This is essential due to the difference in the temperature coefficient of viscosity of mineral oils and varnishes. It is suggested that a water bath be used, which quickly brings the tubes to the proper temperature and insures greater accuracy. The bubble should be started from the flat end of the tube held in a true vertical position. The bottom meniscus of the bubble should be used for comparing the samples. It is only necessary that they start together. Owing to unavoidable differences in bubble sizes and in the shapes of the ends of the tubes, it may be necessary to raise one of the tubes so that the points of comparison will be on the same level. The observation is made after the bubbles are completely formes and moving upwards along a true vertical line. This takes place about 1½ to 2 cm from the bottom of the tube. The standard empty grade A tubes have been carefully selected to and I.D. of ± mm. and should be used for exact determinations. 4

6 However, this close tolerance is relatively expensive, and for the sake of economy, tubes having the same approximate diameter with a tolerance of ± mm. Grade B are used by many manufacturer for general factory control tests. This viscometer meets the requirements of ASTM D 154, D 555, D 1131, D 1545, D 1725, FTMS 14la-Method 4271, and AOCS Method Ka6. Approximate Viscosity in Stokes at 25º C (77º F) A 0.54 B 0.69 C 0.93 D 1.03 E 1.23 F 1.52 G 1.60 H 2.11 I 2.24 J 2.68 K 2.88 L 3.02 M 3.35 N 3.45 O 3.78 P 4.09 Q 4.42 R 4.67 S 5.18 T

7 DIRECTIONS FOR USING THE GARDNER BUBBLE VISCOMETER U to Z-6 CAT. NO. PV-0540 This instrument is based on the principle that the viscosity is directly proportional to the bubble speed. The viscosity of a sample of varnish or other transparent liquid is therefore determined by reference to the standard tubes in which an air bubble rises with the same speed as it does in a tube of the sample being tested. For this purpose two carefully calibrated empty tubes are furnished with each set. The bubble size of the sample is first adjusted as nearly as possible to that in the standard tubes. The tubes are then brought to a temperature of 25ºC (77ºF). This is essential due to the difference in the temperature coefficient of viscosity of mineral oils and varnishes. It is suggested that a water bath be used, which quickly brings the tubes to the proper temperature and insures greater accuracy. The bubble should be started from the flat end of the tube held in a true vertical position. The bottom meniscus of the bubble should be used for comparing the samples. It is only necessary that they start together. Owing to unavoidable differences in bubble sizes and in the shapes of the ends of the tubes, it may be necessary to raise one of the tubes so that the points of comparison will be on the same level. The observation is made after the bubbles are completely formes and moving upwards along a true vertical line. This takes place about 1½ to 2 cm from the bottom of the tube. The standard empty grade A tubes have been carefully selected to and I.D. of ±

8 mm. and should be used for exact determinations. However, this close tolerance is relatively expensive, and for the sake of economy, tubes having the same approximate diameter with a tolerance of ± mm. Grade B are used by many manufacturer for general factory control tests. This viscometer meets the requirements of ASTM D 154, D 555, D 1131, D 1545, D 1725, FTMS 14la-Method 4271, and AOCS Method Ka6. Approximate Viscosity in Stokes at 25º C (77º F) U 6.66 V 8.89 W 10.7 X 12.0 Y 17.4 Z 22.9 Z Z Z Z Z Z

9 DIRECTIONS FOR USING THE GARDNER BUBBLE VISCOMETER Z-7 to Z-10 CAT. NO. PV-0560 This instrument is based on the principle that the viscosity is directly proportional to the bubble speed. The viscosity of a sample of varnish or other transparent liquid is therefore determined by reference to the standard tubes in which an air bubble rises with the same speed as it does in a tube of the sample being tested. For this purpose two carefully calibrated empty tubes are furnished with each set. The bubble size of the sample is first adjusted as nearly as possible to that in the standard tubes. The tubes are then brought to a temperature of 25ºC (77ºF). This is essential due to the difference in the temperature coefficient of viscosity of mineral oils and varnishes. It is suggested that a water bath be used, which quickly brings the tubes to the proper temperature and insures greater accuracy. The bubble should be started from the flat end of the tube held in a true vertical position. The bottom meniscus of the bubble should be used for comparing the samples. It is only necessary that they start together. Owing to unavoidable differences in bubble sizes and in the shapes of the ends of the tubes, it may be necessary to raise one of the tubes so that the points of comparison will be on the same level. The observation is made after the bubbles are completely formes and moving upwards along a true vertical line. This takes place about 1½ to 2 cm from the bottom of the tube. The standard empty grade A tubes have been carefully selected to and I.D. of ± mm. and should be used for exact determinations. However, this close tolerance is relatively expensive, and for the sake of economy, tubes having the same approximate diameter with a 8

10 tolerance of ± mm. Grade B are used by many manufacturer for general factory control tests. This viscometer meets the requirements of ASTM D 154, D 555, D 1131, D 1545, D 1725, FTMS 14la-Method 4271, and AOCS Method Ka6. Approximate Viscosity in Stokes at 25º C (77º F) Z Z Z Z

12 EDFIS 0408 Europe

Instructions Manual. Variable area flowmeter 60 M-1. Series. instrumentation for fluids. Technical Data. C-MI-60M1 Rev.: 0 English Version

Instructions Manual. Variable area flowmeter 60 M-1. Series. instrumentation for fluids. Technical Data. C-MI-60M1 Rev.: 0 English Version instrumentation for fluids Variable area flowmeter Series 60 M-1 Instructions Manual Technical Data Accuracy: ± 2,5% of full scale value. Based on VDE/VDI 3513 Scales: In l/h, l/min, m³/h, kg/h, %, mm.,