EN 12390-4 Concrete Compression Testing Machine Procurement Guide
Use EN 12390-4 as the machine-specification reference within an EN concrete strength workflow, then connect it to specimen geometry, the test method and model-specific verification evidence.
Separate the specimen test method from the machine specification
EN 12390-3 addresses compressive strength testing of hardened concrete specimens, while EN 12390-4 specifies requirements for compression testing machines. A procurement schedule should identify both the test workflow and the machine requirements, using the editions required by the project.
A catalog reference to EN 12390-4 is the start of the technical review. Ask which requirements and measuring ranges have been verified for the offered model, and request documents that identify the actual machine and configuration supplied.
Build the machine requirement from the specimen schedule
List cube sides and cylinder diameter and height, expected strength ranges, daily throughput and any unusual specimen formats. Calculate the likely failure-load range, then compare it with both the machine's maximum capacity and its verified measuring range.
Review the complete load path: frame, actuator, force measurement, controller, bearing faces, seating arrangement, platens and spacers. Confirm test-space clearance and operator access with the actual specimen arrangement installed.
EN 12390-4 procurement evidence checklist
| Review area | Purchasing question | Evidence to request |
|---|---|---|
| Force system | Does the capacity and verified range cover the expected loads? | Model-specific force-verification record and stated range |
| Loading control | How is the required loading sequence configured and recorded? | Controller demonstration and sample load-versus-time output |
| Bearing system | Which blocks, platens and spacers are supplied for each specimen? | Configuration drawing and fixture schedule |
| Machine identification | Do the records identify the offered and delivered machine? | Serial-numbered or model-specific documentation plan |
| Installation | Will the laboratory provide the required utilities and space? | Installation drawing, power requirement and handling plan |
Compare 2000 and 3000 kN machines with the same checklist
Apply the same evidence request to LS-CM2000A, LS-CM3000A and LS-CM3000P. LS-CM2000A is the 2000 kN automatic option for laboratories prioritizing quiet operation, stable loading, competitive price and production lead time. The 3000 kN models serve higher calculated loads and different frame or automation requirements.
The final selection must connect the applicable EN editions, specimen schedule, calculated load range, supplied fixtures, controller workflow and verification documents. Rated capacity by itself is not an EN 12390-4 conformity assessment.
Prepare the factory and laboratory acceptance review
Before dispatch, agree the documents, visual checks and operating demonstration included in the factory review. Confirm model and configuration, supplied fixtures, controller functions, safety provisions, sample output and packing list.
After installation, the laboratory should complete the required verification and approved method implementation before reporting routine results. Keep the official standard, machine instructions, verification records and laboratory procedure under document control.
Frequently Asked Questions
What is the difference between EN 12390-3 and EN 12390-4?
EN 12390-3 covers the compressive strength test for hardened concrete specimens. EN 12390-4 specifies requirements for compression testing machines. A laboratory procurement normally connects the applicable documents with its specimen and verification schedule.
Does an EN 12390-4 reference prove every machine configuration is compliant?
No. Review the applicable edition, the requirements verified for the offered configuration, the force range, bearing system, controller and model-specific evidence. The final laboratory acceptance process depends on the governing project and accreditation requirements.