A:Brief description:
DSHD-1792 Mercaptan Sulfur Tester is made according the national standard GB/T1792-88 Distillate fuels-Determination of mercaptan sulfur-Potentiometric titration method.

DSHD-1792 Mercaptan Sulfur Tester is composed of PHS-3C PH meter, 95-1 magnetic stirrer and support device.

Its function is to determine the mercaptan sulfur in jet fuel,  gasoline,  kerosene and light diesel without hydrothion,  and the content is within the range of 0.0003-0.01%(m/m).
Interferences will appear when elemental sulfur is over 0.0005%(m/m)
 

B:Technical parameters

DSHS-3C PH meter
1. Grade of instrument: 0.01
2. Measurement range  PH:(0-14.00)PH
  MV:(0-±1999)mV(automatically polarity display)
  Temp:(0-100.0)°C
3. Minimum display unit: 0.01pH, 1mV, 0.1°C
4. Compensated temperature range:(0-60)°C
5. Basic error of electronic unit :PH:±0.01pH
  MV:±0.1%FS
6. Basic error of instrument:pH:±0.02pH±1word
　　　　　　　  Temp:±0.5°C±1word
7. Incoming current of electronic unit: no more than  2×10-12A
8. Input resistance of electronic unit:no less than 1×1012O
9. Compensated temperature error:±0.01pH
10. Repeatability error of electronic unit :PH: no more than  0.01pH
　　　　　　　　　　　　, MV:no less than  1mV
11. Repeatability error of instrument: no more than  0.01pH
12. Stability of electronic unit: ±0.01pH±1word/3h
13. Overall dimension:290mm×210mm×95mm
14. Weight:1.5kg
15. Working condition:
　　  a) Ambient temperature:(5-40)°C
　　  b) Relative humidity: no more than 85%
　　　c) Power supply: AC(220±22)V, (50±0.5)Hz
　　  d) No obvious vibration
　　  e) No external magnetic field interference except earth magnetic field

95-1 magnetic stirrer
1. Power supply:AC220V±10%  50Hz
2. Working mode:Continuously
3. Maximum stirring capacity:2000ml
4. Heating power: Step-less adjustable within 300W
5. Rotation speed: (20-1200)r/min
6. Electric motor torque:7.6mm/V.m
7. Temperature controlling accuracy: ±1°C
8. Temperature controlling range :room temperature +5°C-100°C
9. Timing range: (20-1200)min
10. Reversing time: (5-30)s
11. Overall dimension:230mm×150mm×130mm(The bar is not included)
Burette:10mL, scale division is 0.05mL