Freezing point (freezing point) refers to the highest temperature when the oil is cooled to the liquid level and does not move under specified conditions, expressed as ℃.
Same number of carbon atoms:
(1) N-alkanes & GT;
Aromatics with long side chains & GT;
Naphthene & gt;
Iso-alkanes.
(2) Diesel water content exceeds the standard, the freezing point will also increase significantly.
The determination of diesel oil freezing point is carried out according to the Petroleum Products freezing Point Determination Method GB/T 510-1983 (1991).
Suitable for determination of freezing point of dark oil products and lubricating oil.
And SH113E1 automatic condensation point detector based on national standard national standard GB/T510 based on petroleum products solidifying point measurement, adopt modern advanced technology, mechanical, optical, electronic and computer technology into an organic whole, can automatically complete the condensation point of petroleum products testing, the instrument adopts photoelectric detection technology, automatic inclined glass tube method, imported compressor refrigeration system to ensure that meet the requirements of refrigeration and depth.
Apparatus needed for experiment
1.SH113E1 automatic freezing point analyzer, developed and produced by Shandong Shengtai Instrument Co., LTD.
2. Coagulation point test tube in accordance with GB/T510.
 
Experimental steps:
Preparation work
1. After unpacking the instrument, please count the accessories according to the packing list. If there is any damage, please contact our company.
2. The instrument should be handled vertically. The tilt Angle should not exceed 30 degrees along the height of the instrument.
3. Connect the power supply of the instrument to the socket with a capacity of 220V/10A or above, and pay attention to having a good grounding wire.
Ii. Experiment process
1. Freezing point determination: put the rubber plug cover with sensor and detector on the test tube, and put the freezing point test tube into the freezing point cold filter point bath.
2. Click the freezing point measurement to enter the freezing point measurement interface.

3. The main interface of freezing point determination is shown in the figure above.
The above four buttons are respectively the main interface, parameter setting, system setting and historical data.
The main display area is the trend chart of temperature change over time of the sample. Yes