Fully automatic microcoulometric titrator

1

Applicable method

Chlorine:GB/T 18612、SH/T1757、NB/SH/T6056、GB 23971、YB/T5022、ASTM D5808、ASTM D4929...

Sulfur:GB/T11061、GB/T11141、GB/T3208、SH/T 0253、SH/T 0222、SH/T1147、SH/T 1797、SY/T7508、HG/T 5613、ASTM D3120、ASTM D3246...

2

analyze samples

Used for the determination of total sulfur or total chlorine content in products such as oil, petrochemicals, aromatic hydrocarbons, and natural gas

3

injection volume

Liquid:1～50ul

Gas:5～10ml

4

measurement range

S：light oil：0.05mg/L～10000mg/L～percentage content

Cl：light oil：0.1mg/L～10000mg/L～percentage content

5

detection limit

S： 0.05mg/L； Cl：0.1mg/L

6

Temperature control range and accuracy

0℃～1200℃，±1℃

7

Repeatability (error)

0.05mg/L ≤ sample (or standard sample) concentration ＜0.5mg/L，±0.1mg/L

0.5mg/L ≤ sample (or standard) concentration ＜ 1.0 mg/L, RSD ≤ 10%

1.0mg/L ≤ sample (or standard) concentration ≤ 10 mg/L, RSD ≤ 6%

Sample (or standard) concentration>10 mg/L，RSD ≤4%

8

Maximum electrolysis current

±2mA

9

Amplifier electrolysis voltage

±30V

10

input impedance

greater than10⁶Ω

11

Baseline noise

gainK=2400， When the sampling resistance R is 10K Ω, the baseline noise is not greater than 2UV

12

baseline drift

not greater than5mv/min

13

Gain range

0~2560

14

Bias voltage range

0～500mV， Continuously adjustable

15

Air source requirements

Purity of argon gas99.999%Output pressure ≤ 0.2MPa

Oxygen purity99.999%Output pressure ≤ 0.2MPa

16

analysis time

2min

17

Data communication interface

RS232， Can transfer data between LIMIS systems

18

Weight,kg

60

19

sizemm

Instrument host: LongX Width x Height: 600 x 500 x 520 (mm)

Automatic sampler: longX Width x Height: 360 x 340 x 460 (mm)

1

key component

chlorineThe electrolytic cell adopts silver rod electrodes and a large capacity design, without the need to supplement electrolyte during the experiment, and has a longer stable use time than ordinary electrolytic cells.

Accurate measurement, reduced maintenance frequency, and improved work efficiency.

2

Blind sleeve typequartz tube

Blind quartz tube, throughround tripThe combustion method ensures the combustion of the sample,Without using tungsten trioxide as a catalyst, the sample can still be converted and carbon deposition can be avoided.

3

Gas flow control

Using a mass flow meter and computer-controlled gas flow rate, the gas flow rate is stable, accurate, and without fluctuations. The instrument has better repeatability and higher measurement accuracy for small content samples. At the same time, the mass flow meter detects abnormal flow of carrier gas or auxiliary gas, and the workstation suspends the injection of oil samples to prevent carbon deposition and pollution of the gas path and electrolytic cell due to sample oxygen deficiency cracking.

4

Gas stabilization system

Sample cracking stabilizing device

The installation of a pressure stabilization system in the gas circuit avoids interference from gas flow and pressure fluctuations on the measurement.

5

Temperature control system

Automatic control device for cracking furnace fan, automatic on/off of cooling fan, no need for personnel to wait for shutdown.

It has the function of warning errors during operation and prohibiting sample injection due to errors, and has the function of automatic power-off protection against overheating.

Mixing sectionairtightnessOkay, okay,Equipped with a constant temperature system30 ℃, to prevent a decrease in electrolyte activity caused by low temperature

6

drying system

adoptMembrane dryerDehydration without frequent replacement, stable performance.

7

cracking furnace

Using imported electric furnace wire to improve the service life of the cracking furnace.

injection system

1

Fully automatic sampling system

adopt19 positionsor156bitFully automatic sample injection system，Computer control,Direct injection,The experimental process is fully automated, with automatic sample replacement, automatic cleaning, automatic elimination of errors caused by bubbles using the volume difference method, and automatic drawing of standard curves. The injection speed is constant and can be adjusted according to the sample.

Sample injector on computerEnd to endSettings, no need for users to individually set up the injector. User initiated detection allows for unmanned operation, reducing the workload for operatorsandThe system detection error caused by human injection error has improved work efficiencyAnd detection accuracy.

During the testing process, parameters such as the number of tests, injection volume, and analysis time of the test sample can be modified at any time, with functions such as sample addition, replacement, and priority testing.