Summary This instrument is made as per national standard GB/T1792 Distillate fuels-Determination of mercaptan sulfur-Potentiometric titration method. It is used 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) The instrument is composed of PHS-3C PH meter, 95-1 magnetic stirrer and support device.It is the standard instrument for determining mercaptan sulfur distillate fuel.
Main technical specifications PHS-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)℃ 3. Minimum display unit: 0.01pH,1mV,0.1℃ 4. Compensated temperature range: (0~60)℃ 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℃±1word 7. Incoming current of electronic unit: ≤ 2×10-12A 8. Input resistance of electronic unit: ≥1×1012Ω 9. Compensated temperature error: ±0.01pH 10. Repeatability error of electronic unit: pH: ≤ 0.01pH mV: ≥ 1mV 11. Repeatability error of instrument: ≤ 0.01pH 12. Stability of electronic unit: ±0.01pH±1word/3h 13. Dimension: 290mm×210mm×95mm 14. Net weight: 1.5kg 15. Working condition: a) Ambient temperature:(5~40)℃ b) Relative humidity: ≤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℃ 8. Temperature controlling range: room temperature +5℃~100℃ 9. Timing range: (20~1200)min 10. Reversing time: (5~30)s 11. Dimension: 230mm×150mm×130mm(The bar is not included) Burette: 10mL,scale division is 0.05mL