PBD0090A自動冰點測定儀
用途及適用范圍：
本儀器是按照中華人民共和國石化行業(yè)標(biāo)準(zhǔn)SH/T0090《發(fā)動機(jī)冷卻液冰點測定法》規(guī)定的要求設(shè)計制造的。用于發(fā)動機(jī)冷卻液及其濃縮液冰點等指標(biāo)的測定，是一款多用途的全自動冰點測定儀。
該儀器采用工業(yè)計算機(jī)自動控制，儀器操作簡單，自動控制、檢測、計算結(jié)果，試驗結(jié)束自動停機(jī)，軟件顯示時間與溫度曲線。其測試原理是取試樣75～100ml，注入試管中，試管放入冷浴中進(jìn)行降溫，記錄試樣每分鐘的溫度，畫出時間-溫度曲線圖。冷卻曲線與結(jié)晶曲線的交點在縱軸上的投影點，即是該試樣的冰點。
儀器原理：
發(fā)動機(jī)冷卻液冰點測定儀由五部分構(gòu)成，包括浴槽制冷系統(tǒng)、浴槽加熱系統(tǒng)、電機(jī)攪拌系統(tǒng)、彩色觸摸屏人機(jī)交互系統(tǒng)和打印機(jī)系統(tǒng)。儀器浴槽采用酒精作為制冷液，采用壓縮機(jī)制冷，并利用雙機(jī)制冷技術(shù)，能夠覆蓋所有發(fā)動機(jī)冷卻液的冰點，當(dāng)測量結(jié)束之后，浴槽中自帶的升溫系統(tǒng)可以使之迅速升到常溫（20℃）。
儀器自帶彩色觸摸屏，屏幕可以實時顯示試樣的溫度曲線，試樣和浴槽中的溫度，用戶可以實時設(shè)置預(yù)期冰點，修改儀器時間，浴槽溫度校準(zhǔn)，自檢系統(tǒng)的各個部分等，內(nèi)置一塊64M的NAND FLAH，可以對試驗結(jié)果進(jìn)行存儲，采用嵌入式系統(tǒng)設(shè)計，用戶可以查看歷史數(shù)據(jù)。
技術(shù)參數(shù)：
1、 工作電源：　　 AC220V±10%；50Hz。
2、 工作冷槽：　　 雙層真空玻璃浴槽。
3、 冷槽控溫：　　 +20℃～-35℃。
4、 控溫精度：　　 ±0.2℃。
5、 試驗單元：　　 標(biāo)配1組。
6、 制冷系統(tǒng)：　　 新型制冷壓縮機(jī)。
7、 試樣攪拌：　　 同步減速電機(jī)， 60次/分鐘。
8、 環(huán)境溫度：　　 ≤30℃。
9、 相對濕度：　　 ≤85%。
10、整機(jī)功耗：　　 不大于2000W。
本機(jī)特性：
1、彩色觸摸顯示屏，菜單簡單直觀，無需培訓(xùn)即可使用。
2、改變了傳統(tǒng)的電磁攪拌方式，采用進(jìn)口電機(jī)代替。
3、玻璃杜瓦瓶做冷浴，保證冷量不流失。
4、采用嵌入式系統(tǒng)設(shè)計，試驗全過程自動檢測
5、儀器采用進(jìn)口雙壓縮機(jī)復(fù)疊式制冷，環(huán)保制冷劑，制冷速度快。
6、采用冷軋鋼板制作，表面靜電噴塑處理，具有耐腐蝕、易清潔功能
7、焊接采用碰焊技術(shù)，無焊點，外型美觀、大方
8、儀器帶有數(shù)據(jù)恢復(fù)系統(tǒng)，帶打印功能
9、*的減震技術(shù)，減少噪音
10、試驗結(jié)束自動停機(jī)
11、一體式結(jié)構(gòu)，方便移動
12、玻璃試管符合標(biāo)準(zhǔn)要求
PBD0090A Automatic Freezing Point Tester
Uses and scope of application:
This instrument is designed and manufactured in accordance with the requirements of the Peoples Republic of China Petrochemical Industry Standard SH / T0090 "Engine Cooling Liquid Freezing Point Determination Method". It is a multi-purpose automatic freezing point measuring instrument for measuring the freezing point of engine coolant and its concentrated liquid.
The instrument is automatically controlled by an industrial computer. The instrument is simple to operate, automatically controls, detects and calculates the results. It automatically stops after the test. The software displays the time and temperature curve. The test principle is to take a sample of 75-100ml, inject it into a test tube, put the test tube in a cold bath to cool down, record the temperature of the sample per minute, and draw a time-temperature curve. The projection of the intersection of the cooling curve and the crystallization curve on the vertical axis is the freezing point of the sample.
Instrument principle:
The engine coolant freezing point tester is composed of five parts, including bath cooling system, bath heating system, motor stirring system, color touch screen human-computer interaction system and printer system. The bath of the instrument uses alcohol as the cooling liquid, the compressor is used for refrigeration, and the dual-machine refrigeration technology is used to cover the freezing point of all engine coolants. After the measurement is completed, the heating system built in the bath can quickly rise to room temperature (20 ° C).
The instrument comes with a color touch screen. The screen can display the temperature curve of the sample, the temperature of the sample and the bath in real time. The user can set the expected freezing point in real time, modify the instrument time, bath temperature calibration, various parts of the self-test system, and a built-in 64M NAND FLAH, which can store the test results, uses an embedded system design, and users can view historical data.
technical parameter:
1. Working power: AC220V ± 10%; 50Hz.
2. Cold working tank: Double vacuum glass bath.
3. Cold tank temperature control: + 20 ℃ ～ -35 ℃.
4. Temperature control accuracy: ± 0.2 ℃.
5. Test unit: 1 set as standard.
6. Refrigeration system: New refrigeration compressor.
7. Sample stirring: synchronous reduction motor, 60 times / minute.
8. Ambient temperature: ≤30 ℃.
9. Relative humidity: ≤85%.
10. Power consumption of whole machine: not more than 2000W.
Native characteristics:
1. Color touch display, simple and intuitive menu, can be used without training.
2. The traditional electromagnetic stirring method is changed and the imported motor is used instead.
3. The glass dewar is used as a cold bath to ensure that the cold quantity is not lost.
4. Using embedded system design, automatic detection during the whole test
5. The instrument adopts imported double compressor cascade refrigeration, environmentally friendly refrigerant, and fast refrigeration speed.
6. Made of cold-rolled steel plate, the surface is electrostatically sprayed, with corrosion resistance and easy cleaning.
7. Welding adopts bump welding technology, no solder joints, beautiful appearance and generous appearance
8. The instrument has a data recovery system and a print function.
9. Unique vibration reduction technology to reduce noise
10.Automatic shutdown after the test
11. Integrated structure, easy to move
12.Glass test tubes meet the standard requirements