Elcometer 2350 Viscosity Flow Cups User Guide

User Guide
Elcometer 2350, 2351,
2352, 2353 & 2354
Viscosity Flow Cups

For the avoidance of doubt, please refer to the original English language version.
Elcometer Viscosity Flow Cups are packed in a cardboard package. Please ensure that this packaging is disposed of in an environmentally sensitive manner. Consult your local  Environmental Authority for further guidance.
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United Kingdom
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OVERVIEW

Elcometer Viscosity Flow Cups are easy-to-use instruments for measuring the consistency of liquids.
The cup is supported in a standª and is filled with the liquid under test. The time taken for the liquid to drain through the orifice in the bottom of the cup is measured.

The measured kinematic viscosity is generally expressed in seconds (s) flow time, which can be converted to Centistokes (CST) if stipulated in the Standard. The Elcometer  400 Viscosity Conversion Discª, Elcometer ElcoCalc™ Mobile App (see www.elcometer.com), or the look-up tables in Appendix 1 (after page jp-7) can be used for this purpose.
A wide range of cups with different orifices is available for measurements between 5 CST and 5100 CST.

BOX CONTENTS

• Elcometer Viscosity Flow Cupb
• Batch or Cup Specific Calibration Certificate
• User Guide

TEST PROCEDURE

3.1 BEFORE YOU START

1. Select a cup that gives a flow time of between 30 seconds and 100 seconds.
2. Ensure the cap and the orifice are clean and free of debris.
3. The liquid being tested must be homogeneous and must not contain any bubbles. Use freshly strained samples only.
4. The liquid being tested must be Newtonian. To determine whether a liquid is Newtonian, carry out the following measurements using the instructions given in Section 3.2  ‘Test Procedure’ on page en-3:
   • Fill the cup and measure flow time immediately after filling.
   • Fill the cup, wait one minute, then measure flow time.
   If the difference between the two flow times is greater than 10%, the liquid is considered to be non-newtonian and cannot be tested using the Viscosity Cup.
5. Measure and record the temperature of the liquid.
   a Available to purchase as an optional accessory, see Section 5 ‘ Spares & Accessories’ on page en-5.
   b Depending on part number ordered, see Section 7 ‘Technical Specification’ on page en-6 for details.

3.2 TEST PROCEDURE

1. Place the cup into the standª and level the cup using the glass plate and bubble level supplied with the stand (Figure 1).
2. Allow the temperature of the cup and the sample to stabilize at the agreed temperature. Check the temperature of the sample before filling it.
3. Place a finger over the cup orifice to close the orifice (Figure 2).
4. Pour the liquid gently into the cup, avoiding the formation of air bubbles (Figure 2).
5. Slide the glass plate over the rim of the cup to remove the excess samples. Avoid the formation of air bubbles between the glass plate and the liquid (Figure 3).
6. Remove your finger from the cup orifice and wait for a few minutes to allow any air bubbles to rise to the top of the liquid.
7. Remove the glass plate and start the stopwatchª (Figure 4).
8. Watch the flow of liquid from the orifice and stop the stopwatchª the moment the flow breaks for the very first time (Figure 5).
9. Repeat the test.
10. If the test results do not differ by more than 5%, calculate the average of the two test results and record the result.
    

a Available to purchase as an optional accessory, see Section 5 ‘ Spares & Accessories’ on page en-5.
c If the test environment is not temperature stabilized a double-walled Thermo jacket can be used, see Section 5 ‘ Spares & Accessories’ on page en-5.

The measured kinematic viscosity is generally expressed in seconds (s) flow time, which can be converted to Centistokes (CST) if stipulated in the Standard. The Elcometer  2400 Viscosity Conversion Disc, Elcometer ElcoCalc™ Mobile App (see www.elcometer.com), or the look-up tables in appendix 1 (after page jp-7) can be used for this purpose.

3.3 AFTER TEST
Clean the viscosity cup and all the equipment used using a suitable solvent.

DO NOT use wire brushes, metal scrapers, metal files, or other metallic tools for cleaning.
After cleaning, ensure that all materials are removed and that the instrument is dry.

CARE & MAINTENANCE

Elcometer Viscosity Flow Cups are designed to give many years of reliable service under normal operating conditions.

•  Regularly inspect the cup for damage to the orifice, scratches on the internal surface, or deformation as such flaws will affect the readings and the cup may have to be replaced.
•  To check for wear, use Elcometer 2410 Viscosity Cup Standard Calibration Oilsª in place of your liquid and measure the flow time. If wear is detected, contact Elcometer or your local Elcometer supplier.
• Regular calibration checks over the life of the cup are a requirement of quality management procedures e.g. ISO 9000 and other standards.

SPARES & ACCESSORIES

5.1 VISCOSITY CUP STANDS
Using a viscosity cup stand ensures that the cup is positioned correctly to carry out the test.
Each stand is supplied with a bubble level; to ensure the cup is parallel to the surface and a glass draw-down plate; to retain the test sample until the user is ready to begin the test.  The glass draw-down plate also provides a surface for the bubble level.

A stand complete with a Thermo jacket is also available for heating test samples if the temperature of the test environment is unstable.

5.2 STOPWATCH
To time the flow of the liquid from the viscosity cup.

5.3 VISCOSITY CONVERSION DISC
The measured kinematic viscosity is generally expressed in seconds (s) flow time. This can be converted to Centistokes (CST) using the Elcometer 2400 Viscosity Conversion  Disc.

5.4 GLUCOMETER 2410 VISCOSITY CUP STANDARD CALIBRATION OILS

In order to check the viscosity cup’s calibration or to certify it for ISO purposes, it is imperative that viscosity cup standard calibration oils are used.

Supplied in ½ liter (1 pint) bottles complete with calibration certificate, standard oils have a specific drain time, dependent upon the viscosity cup type (Ford, DIN, ISO, etc.) and the orifice size or cup number used.

Specific calibration oils can only be used with specific flow cups – refer to the table below to determine which calibration oil is required for each cup.

Material Safety Data Sheets for the Elcometer 2410 Viscosity Cup Standard Calibration Oils can be downloaded via our website:
http://www.elcometer.com/images/stories/MSDS/elcometer_2410m021.pdf
http://www.elcometer.com/images/stories/MSDS/elcometer_2410m022_m023.pdf
http://www.elcometer.com/images/stories/MSDS/elcometer_2410m024_m025_m026.pdf

WARRANTY STATEMENT

Elcometer Viscosity Flow Cups are supplied with a one-year warranty against manufacturing defects, excluding contamination and wear.

TECHNICAL SPECIFICATION

Part Number*	Cup Type’ Number	Orifice Diameter (mm)	Applicable Standards	Range (CST)	Certificates Available*
					Batch	Cup
K0002350M001	DIN 2	2.00	DIN 53211 (Cup 4 only)	–
K0002350M002	DIN 4	4.00		96 – 683	♦
K0002350M003	DIN 6	6.00		–
K0002350M004	DIN 8	8.00		–
K0002351M001	FORD / ASTM 1	1.90	ASTM D1200 (All cups)	10 – 35	♦
K0002351M002	FORD / ASTM 2	2.53		25 – 120	♦
K0002351 M003	FORD / ASTM 3	3.40		49 – 220	♦
K0002351 M004	FORD / ASTM 4	4.12		70 – 370	♦
K0002351 M005	FORD / ASTM 5	5.20		200 – 1200	♦
K0002352M001	AF NOR 2.5	2.46	NF T30-014 (All Cups)	–
K0002352M002	AFTER 4	4.00		–
K0002352M003	AFTER 6	6.00		–
K0002353M001	ISO 3	3.00	ISO 2431′ (Cups 3, 4, 5 & 6)ASTM D 5125 (Cups 3, 4, 5 & 6)	7 – 42	♦
K0002353M002	ISO 4	4.00		34 – 135	♦
K0002353M003	ISO 5	5.00		91 – 326	♦
K0002353M004	ISO 6	6.00		188 – 684	♦
K0002353M005	ISO 8	8.00		–
K0002354M003	BS 4	3.97	BS 3900 A6:1971 (Cup 4 & 5) AS/NZS 1580.214.2 (Cup 4 only)	89 – 340	♦
K0002354M004	BS 5	4.76		79 – 441	♦

♦ Batch Certificate supplied as standard.
Optional Calibration Certificate Available: Efflux Time Certificate
Optional Calibration Certificate Available: Dimensional Certificate

‡ Add ‘C’ to the end of the sales part number for the cup supplied complete with Efflux Time or Dimensional Calibration Certificate as indicated. Calibration Certificates must be requested at the time of order, they can not be supplied retrospectively.
† ISO 2431 supersedes DIN 53224, NF T30-070, EN 535, and NBN T22-108

The look-up tables on the following pages can be used to convert the measured kinematic viscosity flow time seconds (s) to Centistokes (cSt). In the example below, a measured flow time of 47 seconds using a BS 4 cup equates to 126 CST.

Elcometer 2350: DIN

Elcometer 2351: FORD / ASTM

Elcometer 2353: ISO

Elcometer 2354: BS

www.elcometer.com

References

• Elcometer - World Leaders in Inspection Equipment, Blast Equipment and Laboratory & Physical Test Equipment
• Elcometer - World Leaders in Inspection Equipment, Blast Equipment and Laboratory & Physical Test Equipment