Name of the equipment: Portable Falling Deflectometer Make & Model: PRIMA 100 LWD I-Stem Registration ID- 3220873                            Category of Instrument Characterization and Testing Types of Analysis / Testing To determine the deflection of pavements and assess pavement condition. Application: The PRIMA 100 is used to determine the deflection of pavements under load, typically in the context of road testing and evaluation. Description of Instrument The PRIMA 100 Light Falling Weight Deflectometer is a field measuring equipment consisting of a body, load plates, guide rod, drop weight, and geophones.

Book through I-STEM: https://www.istem.gov.in/ Slot Booking Link I-STEM Slot Booking link for External User

Booking available for Internal and External Both Requisition form for Internals Externals

Faculty In-charge: Dr. M. Sivakumar Email ID: sivakumarm@nitc.ac.in Phone number: 0495-2286232

Technical Staff: Ajin Das C K ajindasck@nitc.ac.in Abhiraj A R abhirajar@nitc.ac.in Chandni P R chandnipr@nitc.ac.in

Department CED Office Email ID cedoffice@nitc.ac.in Location Transportation Laboratory Lab Phone No. 0495-2286243

Features of the equipment ✔ Unique technology: Based on 30+ years of experience ✔ Wireless data collection: With Bluetooth antenna and PDA ✔ Advanced user setup: Customizable to suit specific needs ✔ Calibration: Easy to calibrate and verify ✔ Data collection: With 1-3 geophones, exportable to spreadsheet	Unique features/Measurement capabilities, if any ● Impact depth measurements ● Measurement with 3 geophones ● Data export to spreadsheet ● Wireless data collection
Instrument Technical Description and Major Specifications (This Specifications Limited to Major 5) ▪ Main components: Body with geophone housing, load cell, and electronics box ▪ Load plates: Ø100 mm and Ø300 mm ▪ Drop weight: 10 kg ▪ Guide rod: With release handle and buffers ▪ Power supply: Rechargeable batteries ▪ Communication: Bluetooth connectivity for wireless data transfer	Measurement/Sample specifications: ▪ Impact depth: On various surfaces ▪ Stress dependency: Measures stress dependency on different surfaces ▪ Drop height: Allows selection of drop height for accurate measurements ▪ Frequency: Measures frequency of impact ▪ Amplitude: Measures amplitude of impact

● Sample type: Pavement surfaces (asphalt, concrete, etc.)

● Sample size: Variable, depending on measurement requirements

● Preparation: None, but surface must be clean and dry

● State: In-situ measurement, no need for laboratory preparation

● Submission guidelines: Measure on-site, using PRIMA 100 device

Internal	External Academic Institutes	National R&D Lab	Industry
5000/- per test	5000/- per test	10000/- per test	15000/- per test