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Product Description
- Automatic hydraulic pump ensures smooth and continuous pressure application for consistent, repeatable adhesion strength results
- Fully adjustable pull rates 0.1-1.4MPa/s (14.5-203psi) to meet National and International Standards
- Can be used with 10,14.2, 20 and 50mm diameter dollies
- User definable limits with unique pressure hold and release function
- User definable measurement range with an accuracy of ±1% of full scale:
- 10mm dolly: 100MPa (14400psi)
- 14.2mm dolly: 50MPa (7200psi)
- 20mm dolly: 25 MPa (3600psi)
- 50mm dolly: 4MPa (580psi)
- Dust and water resistant rugged design to IP64
- Interchangeable units: MPa, psi, Nmm2 and N
- A range of standard and thin substrate actuator skirts (compatible with Elcometer 506) available for adhesive strength testing on thick, thin, flat or convex substrates
- Store up to 60,000 readings with individual pull graphs in up to 2,500 alpha numerical batches, complete with attribute failure information
- USB and Bluetooth® data output - compatible with ElcoMaster® App for iPhone, iPod, iPad and Android mobile devices
Assessing The Results - Failure Attributes
Many National and International Standards, including ISO 4624 & ASTM D4541, require the user to record not only the adhesion pull-off force but also the nature of the failure. This is done by examining the bottom of the dolly and assessing the failure. In ‘Advanced’ mode on the Elcometer 510 it is possible to select the 'Attributes' feature (Menu/Setup/Gauge Mode/Advanced) allowing the nature of the fracture to be recorded against each reading and stored within the batch. | |||
Examining The Dolly
a) Cohesive Failure: The coating fails within the body of a coating layer leaving the same coating on the surface and on the dolly face. | |||
b) Adhesive Failure: Failure occurs at the interface between layers (intercoat) where one pulls away from the other. The “coating” on the dolly face will not be the same as that on the test area. | |||
c) Glue Failure: When no coating is present on the dolly it must be recorded as a failure of the glue. This maybe due to incorrect or insufficient mixing of the component parts of the adhesive, incompatibility between the adhesive/coating/dolly/test surface. |
The data is saved in the batch and can be viewed at any time displayed as
##.## MPae N% A M% A/B, where;
##.## MPae = Pull Force in MPa or other measurement units (psi, Newtons or Nmm-2)
N% = Cohesive failure percentagef
A = Cohesive failure layer
M% = Adhesion failure percentagef
A/B = Intercoat adhesive failure layers
| |||
d The number of layers can be user defined for each batch via Batch/New Batch/Number of Layers. This will affect the number of layers available for selection during attribute recording. The maximum number of layers available is five, excluding the substrate and glue. e Or equivalent units. f To the nearest 10%, in line with International Standards. |