PTC®306RL RACING TIRE經典款式DUROMETER快速準確的輪胎硬度。

PTC®公司宣布型號306RL，專門為測量賽車輪胎硬度硬度。模型306RL硬度是由輪胎制造商，技術檢查員，車隊和工程師使用的*。用于確定符合硬度規則，班規和輪胎制造商的規格。模型306RL也是察覺化學軟化輪胎的一大利器。

模型306RL硬度準確，方便地測量輪胎的賽車硬度符合ASTM D2240 A型的大的矩形底座，非常適合獲得可重復的讀數輪胎。硬度計具有低眩光的表盤，大膽容易閱讀的數字和明亮的紅色油漆工作因此很容易找到。硬度計標配zui大保持手，保留峰值讀數，方便閱讀。頂部旋鈕同時允許手持使用和安裝附件型號4411公斤恒定負載自重。模型441提供向下的力提供了更*的測量。每臺儀器的使用符合NIST標準單獨校準。測試模塊和堅固的便攜包都包含在硬度。認可的認證是可選的。

PTC® 306RL RACING TIRE CLASSIC STYLE DUROMETER For Fast and Accurate Tire Hardness.

PTC® has announced Model 306RL, the durometer specifically tailored to measuring racing tire hardness. The Model 306RL durometer is the first choice for use by tire manufacturers, technical inspectors, race teams, and engineers. Used to determine conformance to durometer rules, class rules and the tire manufacturers specifications. The Model 306RL is also a great tool for spotting chemically softened tires. 

The Model 306RL Durometer accuray and easily measures racing tire hardness in compliance with ASTM D2240 Type A. The large rectangular base is ideally suited to obtaining repeatable readings on tires. The durometer features a low glare dial, bold easy to read numbers and a bright red paint job making it easy to locate. The durometer comes standard with a Max Hold hand, which retains the peak reading for easy reading. The top knob permits both hand held use and attachment the accessory Model 441 1kg Constant Load Deadweight. The Model 441 provides more consistent measurements by providing the downward force. Each instrument is individually calibrated using standards traceable to NIST. A test block and sturdy carrying case are included with the durometer. Accredited certification is optional. 

TYPE	PTC MODEL No.	MAIN SPRING TRAVEL	INDENTER DESCRIPTION	INDENTER IMAGE	APPLICATIONS
A ASTM D2240 JIS K6253 ISO 868	201 211 306L 408 501A 511A	821 gf 1.81 LB 0.100 inch travel	Truncated Cone 35° Included Angle		Soft rubber, elastomers, neoprene, silicone, vinyl, nitrile, and butyl,  soft plastics, felt, leather,  waxes, printing rollers  and similar materials
B ASTM D2240	201B  211B 306BL 408B 501B 511B	821 gf 1.81 LB 0.100 inch travel	Conical 30° Included Angle		Rubber, elastomers,  use when off the high end of the A scale
C ASTM D2240	202C 212C 307CL 409C 502C 512C	4.53 kgf 10 LB 0.100 inch travel	Truncated Cone 35° Included Angle		Medium hard rubber or plastics use when off the low end of the D scale
D ASTM D2240 JIS K6253 ISO 868	202 212 307L 409 502D 512D	4.53 kgf 10 LB 0.100 inch travel	Conical 30° Included Angle		Hard rubber, plastics, acrylic,  delrin, kevlar, pvc, nylon, lexan, epoxies and similar materials
DO ASTM D2240	202DO 212DO 413 502DO  512DO	4.53 kgf 10 LB 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Dense textile winding, medium printing rollers
E ASTM D2240	408E 501E 511E	821gf, 1.81 lbs 0.100 inch travel	0.200" Spherical Diameter (5.08mm)		Medium density textile windings, soft rubber, foamed elastomers,wound threads,yarn
O ASTM D2240	201/O 211/O 410 501/O  511/O	821gf, 1.81 lbs 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Soft printing rollers, textile windings
OO ASTM D2240	203 411 511/OO	113gf, 4.0 oz. 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Sponge rubber, very soft rubber
OOO ASTM D2240	412 412L	113gf, 4.0 oz. 0.100 inch travel	1/2" Spherical Diameter (12.7mm)		Very soft materials, (e.g.) open cell foam
SL FOAM RUBBER PTC STANDARD	302SL	142gf, 5.0 oz. 0.200 inch travel	1 cm2- Circular (0.155in2)		Foam and sponge rubber,  cellular and gel-like material
CF ASTM F1957-99	414CF	9.11kgf 20lbs 0.200 inch travel	.1/2" Spherical Diameter (12.7mm)		Composite Foam
Asker C SRIS-0101 JIS K7312	601 603 604 611	855gf, 1.89 lbs 0.100 inch travel	0.200" Spherical Diameter (5.08mm)		Medium density textile windings, soft rubber, foamed elastomers,  wound threads, yarn