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
