Elevator & Escalator System Quality Control,
Ride Quality Measurement & Analysis for the Elevator / Escalator Industry
Physical measurement technologies EVA – 625 elevator vibration analysis system and EVA vibration analysis tool software has quickly become the global standard for the measurement of elevator and escalator ride quality and vibration & sound. Designed to meet international standard for the recording and analysis of elevator and escalator vibration & sound, only the EVA system allows all elevators and escalators to be measured, analyzed and documented absolutely, easily and at a Very Low Cost. Through continuous refinement & enhancement, the EVA system remains the product of choice for the measurement and analysis of elevator/ escalator ride quality vibration & sound, while PMT has become the world’s number one supplier of sign accuracy instrumentation for the vertical transportation industry.
Quantity Elevator/Escalator ISO 18:08 Ride Quality
Measure Acceleration/Deceleration, Speed, Jerk
Identify & Joint Management
Diagnose Bad Roller Guides Document Pre/Post Modernization Changes
Troubleshoot Sheave, Ropes, Count Weight
Assess Drive & Controller Function
Document Elevator Performance
Year-to-Year Elevator Operation Comparison
Escalator Stap index (W/IMD-1)
Optional Flash Drive Storage
Elevator & Escalator System Quality Control, Diagnosis & Inspection
Elevator ride quality is a first indicator of quality design, installation and service. The EVA system includes powerful tools to assist quality improvement in all areas of the elevator mechanical and control system. The highly accurate response of the EVA system and the analysis capabilities offered by the EVA Vibration Analysis Tool software allows techinician to engineering level personnel to rapidly identify problem areas and perform corrective actions. Only the EVA system provides the ability to measure the vibration & sound that people feel, hear and analyze the broad band vibration & sound that is the result of the function of all dynamic aspects of the elevator system. With a little practice, problems with roller guides, rail joints, motor control systems and other dynamic elements can be identified in minutes and repairs targeted precisely. Quality of installation and service can be improved dramatically. Because the simplicity of the EVA system and the information that is returned, the EVA-625 offers unmatched capabilities as an inspection and fast survey tool. The condition of the elevator can easily be compared year after year.
When the first elevators were installed in the mid 1800’s, passengers were probably not overly concerned about safety until Elisha otis demonstrated his safety gear in 1852 which healded the new business of the elevator manufacturer, Milestones in the new business were the use of electric elevators by siemens in 1880 and the Eiffel tower in 1889 which at 321 meters is still recognised as the symbol of Paris. The first generation of elevators used either water hydraulic or steam as their motive force and the travelling public were probably only too glad to move automatically up and down buildings rather than using stairs or ramps. Passenger comfort was not thought of as an important item for elevators. if you consider the motor car industry of that time the modern cars were open with no heating, were very noisy and very different from today.
The elevator industry and building owners remained stagnated in this position for over 100 years after Elisha Otis gave his revolutionary demonstration, in that elevator ride quality was not a major concern as it did not have an affect on sales or maintenance revenues.
It was not until the last quarter of the 20th Century did the concept of elevator ride quality start appearing in specification documents. The Japanese Elevator industry had basic ride quality
requirements in place during the early 1980’s due to the cultural demands of the Japanese population. These Japanese concepts started to be an incorporated into international buliding owners and elevator consultants specification with varying degrees if success. The ride quality requirements were ask being graded into Principle Standards of quality without specif-ing other Parameters and requirements essential for enhanced passenger perception for enhanced passenger perception to some elevator suppliers, manufacturers, consultants and installers it was an easy way to increase some income without understanding the dynamics of elevator ride quality or what really was good or bad elevator ride quality in terms of human perception.
Cruciality there was no accepted method of testing for elevator ride quality, at the simplistic and testing was by placing a coin on its edge in the centre of the car floor and driving the elevator up and down, if the coin did not fall over it was good ride quality. A more sophisticated approach on the same theme was to balance the coin on the car handrail.
To overcome these shortfalls some elevator consultants specification attempted to incorporate very detailed testing procedures using highly complex testing and recording instruments, which also required highly
skilled technicians to operate keep the instrumentation in calibration and understand the data and results obtained. To enable a Worldwide method OG standardized elevator testing of ride comfort an ISC Standard for Lifts (Elevators) Measurement of lift ride quality ISO 18 738 was published in 2003. This Went a long way to provide an international standardized method of testing and recording elevator ride quality, provided standardized terms and definitions, measuring instrumentation. Evaluation of ride quality, procedures for measuring ride quality and reporting of results. ISO 18 738 crucially did not detail what is poor or good elevator ride quality.
Technical Specitications
The classification of elevator ride quality is a perception of the passenger, but technical specifications being produced by elevator manufaturers and elevator confusion, as sometimes they are without technical or commercial basis and it is doubtful that they bring added value to a project in terms of base commercial cost, reduced maintenance price, increased reliability or increased rentable value of a building.