The sponge Hardness Tester is specially used to measure the hardness of soft materials. Such as foam material hardness, rag doll hardness, pillow hardness, quilt hardness and hardness of polyurethane foam rubber products, etc.
1. Product description
*The sponge Hardness Tester is used to measure the hardness of soft foam materials , rag dolls, pillows and polyurethane foam rubber products. This Hardness Tester is different from other Hardness Testers in terms of measurement and use . The foot is in direct contact with the specimen and uses its own weight as the dynamometric load.
* This Hardness Tester complies with the following standards:
"Rubber Pocket Durometer Indentation Hardness Test Method" GB/T 531-1999
"Test Method for Shore Hardness of Plastics" GB/T 2411-80
Other standards: DIN 53505 ISO868 ISO7619 ASTMD2240 JISK7215.
* Using computer technology, digital filtering technology and many other professional technologies, it can accurately measure the material thickness.
* When the battery voltage is lower than the specified value, it will be automatically indicated.
* Digital display, no parallax.
* With the optional RS232C software and cable, it can communicate with PC computer to realize the functions of data collection, processing, analysis and printing.
2. Technical parameters
Display: 4-digit 10mm LCD
Test range: 10~90 HF
Resolution: 0.1HF
Measurement accuracy: ≤ ±1 HF
Display parameters: hardness value/average value/maximum value.
Power supply: 2x1.5v AAA batteries.
Operating conditions: temperature 0~40°C, humidity <90%
Dimensions: 176x63x25mm
Weight: 310 g (excluding battery)
4. Measurement procedure
4.1 Sample
对于试样的最小厚度，邵氏F型要求10mm。若试样较薄，允许用两层，最多不超过三层叠合成所需的厚度，并应保证各层之间接触良好。测试点离开边缘的距离至少应为50mm。而且试样表面光滑、厚度应均匀、平整、无气泡、无机械损伤及杂质等。
4.2 轻按多功能键，接通整机电源。
4.3 最大值功能
轻按最大值保持键"MAX”,显示器上就出现"MAX”,此时测量结果显示为本次测量过程中的最大值，若要取消此功能，只要再按一次"MAX”键，此时"MAX”消失。
4.3.1将邵氏硬度计垂直放在被测试样上 , 让压针的端面与试样紧紧地接触1到2秒, 这样最大值自动会显示在 LCD上。特别注意:硬度计的测盘不应超过被测表面的边缘.
4.3.2 要进行下次测量, 只要轻按一下"ZERO”键,然后再重复4.4。另一方面，也可以每次进行下一次测量前，均需要按"MAX”键清零("MAX”符号也随着消失)，然后再次按动"MAX”键进行测量（重复4.4）。
4.4 如果不是为了测量最大值，就没有必要按动 "MAX”键而使得显示器上出现最大值指示符"MAX“,在这种情况下，显示器上的数字就为瞬时值。测量时，保持硬度计不动，在需要的时间间隔读数，就可以获得所需的数值。通常情况下,读数间隔应小于1秒。
4.5 平均值功能及测量次数设置
按下"N/AVE”键, 屏幕显示设定次数指示符"N" 及测量次数。继续按"N/AVe”键，可设置测量次数，测量次数最大值为9，当次数设定后，可按"ZERO”键或"MAX”键返回到测量状态。硬度计每次测试后，同时显示本次测试的硬度值和测试次数，当到达设定的测试次数时，先显示本次硬度值，随后显示平均值，同时显示平均值符号" AVE”, 并有两声蜂鸣器响声。用户也可According to需要记录若干次测量的数据，而后手工计算出算术 平 均 值 。测量次数设置完，可按"MAX”键和"ZERO”键返回测量状态 , 或者数秒后机器自动进入测试状态。平均值计算分最大值和随机值两种，做最大值平均值计算时，应使屏幕同时显示"MAX”和"N”.要进行下次测量 , 只要轻按一下"ZERO”键，然后再重复4.3.1~4.3.2。
五、仪器校零
5.1 Zero Calibration
Hold the Hardness Tester vertically and let the indenter hang in the air. At this time, the reading on the display should be zero, otherwise, zero calibration should be carried out. That is, press the "ZERO" button lightly, so that the reading on the display is 0.
5.2 Full scale calibration
Make the pressure foot of the Hardness Tester fully contact with the glass plate. At this time, the extension length of the pressure needle is zero, and the hardness value on the display should be between 99.7~101, indicating that the full scale value is correct, otherwise, press "CAL" key.
6. Replace the battery
6.1 When the battery symbol will appear on the display, the battery needs to be replaced. Open the battery cover and take out the battery.
6.2 Install the battery correctly according to the label on the battery box .
6.3 If the meter , please take out the battery to prevent the battery from rot and damage the meter.
7. Matters needing attention
When measuring, when the reading of the C-type Hardness Tester is less than 10HC , the Shore F-type Hardness Tester should be used for measurement. Similarly , when the reading of the F-type Hardness Tester is greater than 90HA , the Shore C-type Hardness Tester should be used for measurement.
* metric/imperial unit conversion, with average calculation function.
* With automatic shutdown function, saving power.
