| Feature | User Level (ACU) | Expert Level (ACEU) | Master Level (ACMU) | | :--- | :--- | :--- | :--- | | | Core software proficiency | Advanced & complex systems | Comprehensive mastery & integration | | Format | Multiple choice & lab | Multiple choice & lab | Multiple choice & lab | | Duration | 4 hours | 4 hours | 4 hours | | No. of Questions | 65 | 73 | 72 | | Passing Score | 70% | 70% | 70% | | Prerequisite | None | Must pass the User exam first | Must pass the Expert exam first | | Certification Path | Entry-level | Second-level | Top-level |
A) A pump with negative delta P B) A compressor with a pressure ratio < 1 C) A pressure reducer valve D) An expander (with optional work recovery)
A Explanation: If the feed stream to a standard HYSYS Separator is completely defined (temperature, pressure, flow rate, composition), the vessel automatically calculates the vapor-liquid equilibrium at the feed condition. It requires 0 additional specifications to converge unless a pressure drop is introduced.
Aspen HYSYS is the industry-standard software for process simulation, modeling, and design in the chemical, oil and gas, and energy sectors. Earning an demonstrates proficiency in building, navigating, and optimizing steady-state simulation models. aspen hysys user certification exam questions
You will be asked to configure and troubleshoot standard equipment:
"You are running a distillation column simulation, and you receive an error that the column will not converge. What are the first three steps you would take to diagnose and resolve this issue?"
Modeling heaters, coolers, and heat exchangers (including EDR - Exchanger Design and Rating). | Feature | User Level (ACU) | Expert
When switching to Dynamics, HYSYS strips out steady-state pressure specs and replaces them with dynamic valve equations and tank levels.
This is the core of the exam. You must understand the degrees of freedom for each block.
Configuring separators, heat exchangers, pumps, and complex column models (like reflux ratio parameters). Advanced Analysis: Case Studies , using the Pipe Segment models, and performing Safety Analysis (PSV sizing). Troubleshooting: Aspen HYSYS is the industry-standard software for process
C. The Recycle Advisor helps with placement and configuration, but it does not automatically create a new workbook for stream analysis.
The ability to add a stream, define its composition using the component list, correctly enter the specified temperature, pressure, and flow, and verify that the results match the expected physical state.
Ultimate Guide to Aspen Hysys User Certification Exam Questions
The exam is practical and scenario-based. You will be expected to use the software to find answers. Here are some examples of the types of questions and concepts you may face. Question 1: Fluid Package Selection
Before you commit to taking the exam, run through this final checklist to ensure you're fully prepared.