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TSI Service and Calibration Offerings
Engine Exhaust Particle Counters and Reference Instruments
TSI service, performed on an annual basis, helps to keep your Engine Exhaust CPC (EECPC) in proper working order and delivering accurate measurements. TSI services include preventive and corrective maintenance, as well as instrument calibration that is compliant with both UNECE PMP (Particle Measurement Programme) requirements and with ISO 27891 (Aerosol particle number concentration — Calibration of condensation particle counters), with full traceability to National Standards and Metrology Institutes. TSI also offers ISO 17025 accredited services for EECPCs, enhancing the quality, accuracy and reliability of these calibrations to the highest achievable level.
** Models 3791 and 3792 can also be serviced with these services in the ‘Order’ column. When selecting the correct service for a 3791 or 3792, be mindful of the D50 cutpoint of the instrument (i.e. 23 nm or 10 nm).
** D50: The D50 cutpoint is a traditional specification of CPC’s, and is defined as the particle size at which the CPC can count particles with 50% efficiency. In the case of the 3790A-10, counting efficiency at 10 nm is required by upcoming PMP regulations to be between 50-80%.
Note that while ISO 17025-accredited calibrations are available for the EECPCs, such calibrations are not available for the Reference units:
* D50: The D50 cutpoint is a traditional specification for CPCs, and is defined as the particle size at which the CPC can detect the particles with 50% efficiency.