一、概述：
QX系列汽油辛烷值柴油十六烷值測定儀，分A、B、C、D、E五種型號，A型為汽油辛烷值測定儀、B、C、D型簡稱為汽柴油兩用測定儀、B型為臺式結構交流供電、C型為臺式結構交直流供電、D型為手持式結構直流供電、E型為柴油十六烷值，顯示屏上簡稱測定儀，B、C、D三款機型功能一致。QX系列測定儀可測航空汽油、車用汽油、調合汽油、乙醇汽油、甲醇汽油、車用柴油。是用于機械化、石油煉化企業、儲油和調油單位快速測定汽油辛烷值和柴油十六烷值的儀器。該儀器采用大屏幕顯示，背燈亮麗柔和，界面字體清晰，具有：操作簡便、測定速度快、精度高、范圍廣、功能全等特點。本儀器具有四項技術創新：1、數字化技術。抗*力強、變差小、精密度高；再現性，重復性好。2、儀器采用自動賦值標定技術，標定程序簡單，方法科學，標定結果準確可靠。3、測定程序采用自動回歸技術，以ASTM--CFR試驗機測定結果為標準，有針對性的進行回歸，提高了測定精度、擴大了測定范圍。4、對不同油品通過予先回歸可做到一鍵測定，方便客戶使用。四項技術創新：采用了人性化的設計、操作簡便、提高了儀器的測定精度，拓展了儀器的使用范圍，展現了儀器的實用價值。
二、工作原理：
車用汽油辛烷值測定儀原理是按國標GB/T5487，使用ASTM—CFR試驗機實現的，也是*的。它是在嚴格試驗條件下:以具有可變壓縮比的標準發動機為手段，以參比燃料為標準相比較測定的。QX系列測定儀是采用測定油品組分綜合介電常數的方法測定的。它是以嚴謹的數學模型為回歸的理論基礎，以*的電子測量技術為手段，以CFR試驗機測定結果為標準，有針對性的進行回歸，有針對性的測定以保證測定精度，突破了非物理量無法量值傳遞的難題，相當于CFR試驗機對QX系列測定儀的量值傳遞，實現了與相關國標接軌。
儀器由微電腦和傳感器組成。傳感器采集到的信號，傳輸到微電腦輸入端經CPU處理后顯示測定結果。屏幕顯示（研究法、馬達法、抗爆指數），并可存儲、讀取、瀏覽、打印。
三、技術性能：
1、工作環境：環境溫度 10℃～35℃ 相對濕度 ≤85%
2、測定范圍：
(1)航汽： 87.0～105.0/MON
(2)車汽：
國標： 70.0～110.0/RON 判斷： 60.0～120.0/RON
調合： 75.0～120.0/RON 輕質： 50.0～80.0 /MON
異構：87.0～108.0/RON 芳烴：95.0～120.0/RON
乙醇： E93: 92.0 ～95.0/RON 甲醇：M93: 85～100.0/RON E97:95.0～99.0/RON M97: 92.0～110.0/RON
(3)車柴： 25～75/CN (十六烷值) 甲醇含量：M5～M25%
20～80/CI (十六烷指數)
3 、準確度：
航汽： ≤± 1.5/MON
車汽： ≤±1.5/RON ≤± 1.5/MON
車柴： ≤±2.6/CN ≤±2.6/CI
回歸樣本復測: ≤±0.5/RON ≤±0.5/MON
回歸試樣實測: ≤±1.5/RON ≤± 1.5/MON
標定準確度： ≤±0.2/RON
4 、精密度（置信水平95%）再現性：≤±0.5/RON 重復性：≤±0.2/RON
5 、小分度： 0.1/RON 0.1/MON
6 、響應時間: 1S
7 、測定結果： 液晶顯示、存儲打印
8 、外形尺寸： 臺式： 300×250×120 mm
手持式： 210×100×40 mm
9 、使用電源： A、B型：AC220V±10%；50HZ±1 臺式
C型 ： 交直流兩用，AC220V±10V/3.7V 臺式
D型 ： 充電電池供電， DC 3.7V 手持式
QX series of octane number of gasoline octane number of coke analyzer
I. Overview:
QX gasoline octane number of cetane number analyzer, sub-A, B, C, D, E five models, A type of octane number for the petrol analyzer, B, C, D type referred to as dual-use gasoline and diesel C-type AC-DC power supply for the desktop structure, D-type hand-held structure for DC power supply, E-type for the cetane value of diesel dedicated, the display on the detector, B, C, D three models the same function. QX series of measuring instrument can be measured aviation gasoline, motor gasoline, blending gasoline, ethanol gasoline, methanol gasoline, automotive diesel. Is used for mechanized units, oil refining enterprises, oil storage and oil units for rapid determination of gasoline octane number and diesel cetane number of special equipment. The instrument uses large-screen display, bright and soft backlight, the interface font clear, with: simple, fast measurement, high precision, wide range, full-featured features. The instrument has four technical innovations: 1, digital technology. Anti-interference ability, small variation, high precision; reproducibility, good repeatability. 2, the instrument uses automatic assignment calibration technology, calibration procedure is simple, scientific method, the calibration results accurate and reliable. 3. The automatic regression technique was used to determine the result, and the results were calibrated by ASTM - CFR testing machine. The precision was improved and the measuring range was enlarged. 4, the return of different oils can be achieved through a pre-determination, to facilitate customer use. Four technical innovations: the use of a human design, easy operation and improve the measurement accuracy of the instrument, expanding the use of the instrument, showing the practical value of the instrument.
Second, the working principle: motor gasoline octane number tester is based on national standard GB / T5487, using ASTM-CFR test machine to achieve, but also internationally recognized. It is measured under strict test conditions by means of a standard engine with a variable compression ratio as compared to a reference fuel. QX series of measuring instrument is the use of the determination of oil components of the integrated dielectric constant of the method of determination. It is based on rigorous mathematical model for the regression of the theoretical basis of advanced electronic measurement technology as a means to CFR test results as the standard test, targeted regression, targeted to ensure that the determination of precision, breaking the Non-physical quantity can not pass the problem, the equivalent of CFR test machine on the QX series of measuring instrument of the value of the transfer, to achieve the integration with the relevant national standard.
The instrument consists of a microcomputer and a sensor. Sensor to collect the signal transmitted to the microcomputer input by the CPU after the display of measurement results. Screen display (research method, motor method, antiknock index), and can store, read, browse, print.
Third, the technical performance:
1, the working environment: Ambient temperature 10 ℃ ~ 35 ℃ Relative humidity ≤ 85%
2, measuring range:
(1) Air steam: 87.0 ~ 105.0 / MON
(2) car steam:
GB: 70.0 ~ 110.0 / RON judgment: 60.0 ~ 120.0 / RON
Blending: 75.0 to 120.0 / RON Light: 50.0 to 80.0 / MON
Isomer: 87.0 to 108.0 / RON Aromatics: 95.0 to 120.0 / RON
RON M97: 92.0 to 95.0 / RON Methanol: M93: 85 to 100.0 / RON E97: 95.0 to 99.0 / RON M97: 92.0 to 110.0 / RON
(3) car wood: 25 ~ 75 / CN (cetane number) Methanol content: M5 ~ M25%
20 to 80 / CI (cetane index)
3, Accuracy:
Steam: ≤ ± 1.5 / MON
Vehicle steam: ≤ ± 1.5 / RON ≤ ± 1.5 / MON
Vehicle fuel: ≤ ± 2.6 / CN ≤ ± 2.6 / CI
Retested sample retest: ≤ ± 0.5 / RON ≤ ± 0.5 / MON
Regression sample measured: ≤ ± 1.5 / RON ≤ ± 1.5 / MON
Calibration accuracy: ≤ ± 0.2 / RON
4, Precision (95% confidence level) Reproducibility: ≤ ± 0.5 / RON Repeatability: ≤ ± 0.2 / RON
5, the minimum sub-degree: 0.1 / RON 0.1 / MON
6, the response time: 1S
7, measurement results: liquid crystal display, storage printing
8, Dimensions: Desktop: 300 × 250 × 120 mm
Handheld: 210 × 100 × 40 mm
9, the use of power: A, B type: AC220V ± 10%; 50HZ ± 1 desktop
C: AC and DC, AC220V ± 10V / 3.7V desktop
D-type: rechargeable battery-powered, DC 3.7V hand-held
