Beijing Chaoyang Gaoke Application Technology Institute Co.,Ltd
Reasons for choosing CMS-01.
Reasons for choosing CMS-01.

Now, the CMS-01 High-frequency reciprocating rig (HFRR) for assessment of diesel fuel lubricity is the most advantageous version among the technical improvement and upgrade of products of same kind in the world. The automatic constant temperature and humidity control system was first proposed and applied in the High-frequency reciprocating rig (HFRR) for assessment of diesel fuel lubricity by the Company, and has obtained the national patents at No. ZL2012 20533766.2 (semiconductor refrigeration) and No. ZL2013 20497422.5 (compressor refrigeration). This technology and other technologies such as reflective grating ruler for stroke control have represented that our technology in the field of High-frequency reciprocating rig (HFRR) for assessment of diesel fuel lubricity is ahead of domestic and foreign products of same kind.

In order to match the execution of the revised international standard ISO 12156-1:2016, in September 2017, we entrusted the Machinery Industry Analytical Instrument Quality Supervision and Testing Centre of China to perform the comprehensive analytical inspection and test on our CMS-01 tester, in accordance with each requirements of standard ISO 12156-1:2016. The test results have proven that our product completely meets the requirements of ISO 12156-1:2016 and can well control the test air condition, and the test repeatability and reproducibility are obviously lower than the range stipulated in the standard. For detailed information, please refer to our latest test report.

Test parameters in conformity with various latest standards

01. Stroke length(mm) 1.0 ± 0.02;

02. Frequency (Hz) 50 ±1;

03. Test mass (g) 200 ±1;

04. Fluid volume (ml) 2 ±0.2;

05. Fluid temperature () 60 ±2;

06. Test duration (min) 75 ±0.1

07. Air conditions of test environment in conformity with various standards*: temperature range: 17~28; humidity range: 15~85%RH±3%RH.

* The air conditions of test environment stipulated in IS012156-1:2016 and ASTM D6079-11(2016) are different. The standards stipulate the laboratory air conditionss of test environment via charts respectively; the standard ASTMD6079-11(2016) just stipulates the range of relative humidity which is uniform with the standard ASTM D7688-11(2016). The constant temperature and humidity control system of this equipment is designed pursuant to the test environment most close to the boundary, and meets the relevant requirements of every standard.




Comparison between the CMS-01 tester and other domestic instrument of same kind

1. Stroke control


Imported tester: The linear differential transformer   is used, the output signal is analog voltage, the stroke shall be calibrated   periodically, and the operation is complex.

CMS-01 tester: The reflective optical encoder can   output the accurate displacement pulse directly, and does not need the   periodic calibration.


 1. The adopted reflective optical encoder has the stable and reliable performance, and can be used for long period without calibration;

2. The stroke length precision is stable and reliable; the test result has the good repeatability and reproducibility;

3. The electronic verifying device for dynamic stroke with a resolution better than 1μm can be provided.

2. Environment temperature and humidity control


Imported tester: The humidity   control cabinet shall be purchased, and the user has to mix the saturated   saline solution by hand to control the humidity in advance.

CMS-01 tester: Obtain the   temperature and humidity at real time, and control and adjust the temperature   and humidity automatically in accordance with the current environment   conditions


 CMS-01 tester is flexible and convenient to operate, and has the stable and reliable automatic control; the user can set the allowable range (temperature and humidity) chart of test environment directly in accordance with the standard ISO12156.1-2016, and the setting is not affected by the environment temperature or humidity change during test so the accurate test data can be obtained.

3. Installation and locating method of lower test piece


Imported tester: The lower test pipe contacts with   the bottom of fluid reservoir face to face; if the bottom is uneven, the   lower test piece can be installed accurately.

CMS-01 tester: The bottom of lower test piece just   contacts with the annular slot edge of bottom of fluid reservoir, which is   good for the accurate installation of lower test piece.