PBD0090A自动冰点测定仪
用途及适用范围：
本仪器是按照中华人民共和国石化行业标准SH/T0090《发动机冷却液冰点测定法》规定的要求设计制造的。用于发动机冷却液及其浓缩液冰点等指标的测定，是一款多用途的全自动冰点测定仪。
该仪器采用工业计算机自动控制，仪器操作简单，自动控制、检测、计算结果，试验结束自动停机，软件显示时间与温度曲线。其测试原理是取试样75～100ml，注入试管中，试管放入冷浴中进行降温，记录试样每分钟的温度，画出时间-温度曲线图。冷却曲线与结晶曲线的交点在纵轴上的投影点，即是该试样的冰点。
仪器原理：
发动机冷却液冰点测定仪由五部分构成，包括浴槽制冷系统、浴槽加热系统、电机搅拌系统、彩色触摸屏人机交互系统和打印机系统。仪器浴槽采用酒精作为制冷液，采用压缩机制冷，并利用双机制冷技术，能够覆盖所有发动机冷却液的冰点，当测量结束之后，浴槽中自带的升温系统可以使之迅速升到常温（20℃）。
仪器自带彩色触摸屏，屏幕可以实时显示试样的温度曲线，试样和浴槽中的温度，用户可以实时设置预期冰点，修改仪器时间，浴槽温度校准，自检系统的各个部分等，内置一块64M的NAND FLAH，可以对试验结果进行存储，采用嵌入式系统设计，用户可以查看历史数据。
技术参数：
1、 工作电源：　　 AC220V±10%；50Hz。
2、 工作冷槽：　　 双层真空玻璃浴槽。
3、 冷槽控温：　　 +20℃～-35℃。
4、 控温精度：　　 ±0.2℃。
5、 试验单元：　　 标配1组。
6、 制冷系统：　　 新型制冷压缩机。
7、 试样搅拌：　　 同步减速电机， 60次/分钟。
8、 环境温度：　　 ≤30℃。
9、 相对湿度：　　 ≤85%。
10、整机功耗：　　 不大于2000W。
本机特性：
1、彩色触摸显示屏，菜单简单直观，无需培训即可使用。
2、改变了传统的电磁搅拌方式，采用进口电机代替。
3、玻璃杜瓦瓶做冷浴，保证冷量不流失。
4、采用嵌入式系统设计，试验全过程自动检测
5、仪器采用进口双压缩机复叠式制冷，环保制冷剂，制冷速度快。
6、采用冷轧钢板制作，表面静电喷塑处理，具有耐腐蚀、易清洁功能
7、焊接采用碰焊技术，无焊点，外型美观、大方
8、仪器带有数据恢复系统，带打印功能
9、*的减震技术，减少噪音
10、试验结束自动停机
11、一体式结构，方便移动
12、玻璃试管符合标准要求
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