The GS3 Gardner Sward Hardness Rocker is used for measuring the hardness of paint and most any other nonmetallic material with auto-calibration. It is an advanced automatic version of the time honored Sward Hardness Rocker with two major advances. The fabricated and assembled parts of the rocker are replaced by a single frame, machined from a solid metal bar.
Features
Model GS3 now includes a Mems Accelerometer/Micro controller with Auto-Calibration
The two bubble levels for determining the high and low limits of swing are replaced by Mems Accelerometer which, through electronic circuitry, automatically register the swings on a large character liquid crystal display digital counter.
Calibration feature that simplifies the calibration process
EDM machined from a solid brass bar block
No more bubble counting, the GS3 will do the counting for you, start it and walk away
Calibration settings stored and retained in NVRAM (Non-Volatile Random Access Memory)
Rocker Cycle Counts are Electronically Determined and Registered on a Large Liquid Crystal Display (LCD)
Automatically Starts and Stops Cycle Count with no continuous observation necessary
State-of-the-Art Design
One-Piece Frame Construction for Accuracy and Permanence
The Gardner/Sward Hardness Rocker is a delicate instrument. Any scratches or nicks that occur by improper handling on the ring radius in the arc of sample contact area may change results obtained by the instrument. There is no way of removing such damages without changing the original sensitivity, calibration and function of the instrument. This instrument should only be handled by qualified personnel. Do not use any type battery for replacement other than catalog number (HA-1023/B) listed in price section.
Technical Attributes
Weight: | 105 ± 2 grams |
Ring Radius (R1, R2) Between Instruments: | 2.000" ±0.010" |
Ring Radius Match (R1, R2) Each Instrument: | Within 0.002" |
Ring Concentricity (C/R1, C/R2): | Within 0.002" |
Ring Separation (X) Between Instruments: | 1.000 ±0.005" |
Ring Separation in Arc of Ring Contact (S): | Within 0.002" |
Ring Cross Section Outside Radius (r): | 0.0155 ±0.0001" |
Swing Cycles on Clean Level Plate Glass: | 50 ±1 |
Time for 50 ±1 Swing Cycles on Plate Glass: | 60 ± 5 seconds |
More Information
Accessories
Standards
Procedure
Procedure for Calibration
The Rocker is calibrated by the manufacturer to record 50 ±1 swing cycles in 60 ±5 seconds on the plate glass surface of the leveling plate used by the manufacturer and when operated in accordance with the detailed instructions furnished with the instrument. The hardness rocker is very sensitive and may not give exactly the same readings on other plate glass surfaces even when cleaned in the same manner or when readings are taken in different directions on the same glass surface.
Delivery Content
Model GS3 Hardness Rocker Complete with circular bubble level, wand (pencil w/flat rubber tip), battery, foam-fitted carrying case and Mems Accelerometer/Microcontroller
Accessories