1.High-frequency Infrared C&S Analysis Instrument 2.Multistage hidden isolating circuit 3.Double CPU design 4.Self diagnosis

Main technical parameters:

Range of measurement: C: 0.0001%-10.0000% (can be extended to 99.9999%)

                                              S: 0.0001%-3.5000% (can be extended to 99.9999%) 

Analysis error: accord with GB/T20123-2006/ISO15350:2000 standard

Time of analysis: 20 to 60 seconds, could be adjusted. Around 35 seconds usually.

High-frequency furnace: power ≥2.5KVA   Frequency: 18MHz

Electronic balance: weight the sample in variable amount                Accuracy of reading:0.0001g

Work environment: indoor temperature:10-30°C

relative humidity:<90%

Power supply: ground connection is good 

                            voltage:AC220V±5%

                            frequency:50Hz±2%

Oxygen: purity≥99.5%, input pressure: 0.18MPa±5%

 

CS-8820 Type Infrared Carbon & Sulfur Analyzer Acceptance Standard 

1. Repeatability

Select one material of the level 1 steel standard of our country (the mass fraction of carbon is between 0.400% and 1.000%, and sulfur is from 0.020% to 0.080%), operate according to instrument operation instruction manual, testing 11 times successively match with high-frequency furnace, the D-value between maximum and minimum of test result should less than or equal to 1.46r. computational formula as follows:

C:lgr = 0.52121lgω-1.9617

S:lgr = 0.62212lgω-1.9965

r: repeatability 

ω: the calibration value of tested materials 

 

2. Accuracy rating

Select the level 1 (steel or iron) standard of our country (the mass fraction of carbon is between 0.003% and 4.500%, and sulfur is from 0.002% to 0.100%), use high, middle and low samples,  match with high-frequency furnace , and operate according to instrument operation instruction manual, then revise. Testing 3 times every sample after revise, take the average value of the 3 test results, C & S should all less than or equal to the value of , formula as follows:

 

X: average value 

Xo: the calibration value of tested materials

n: testing times

r: repeatability

R: reproducibility

 

Reproducibility is computed by the following formula:

C:lgR = 0.58221lgω-1.4558

S:lgR = 0.68878lgω-1.3693

ω: the calibration value of tested materials 

 

CS-8820 Type High-frequency Infrared Carbon Sulfur Analysis Instrument