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详细介绍
PTC®306RL RACING TIRE经典款式DUROMETER快速准确的轮胎硬度。
PTC®公司宣布型号306RL，专门为测量赛车轮胎硬度硬度。模型306RL硬度是由轮胎制造商，技术检查员，车队和工程师使用的*。用于确定符合硬度规则，班规和轮胎制造商的规格。模型306RL也是察觉化学软化轮胎的一大利器。
模型306RL硬度准确，方便地测量轮胎的赛车硬度符合ASTM D2240 A型的大的矩形底座，非常适合获得可重复的读数轮胎。硬度计具有低眩光的表盘，大胆容易阅读的数字和明亮的红色油漆工作因此很容易找到。硬度计标配zui大保持手，保留峰值读数，方便阅读。顶部旋钮同时允许手持使用和安装附件型号4411公斤恒定负载自重。模型441提供向下的力提供了更*的测量。每台仪器的使用符合NIST标准单独校准。测试模块和坚固的便携包都包含在硬度。认可的认证是可选的。
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 | 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 | 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, | 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 | 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 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, | 0.200" Spherical | | Medium density |
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