主营产品,备件供应,充足库存
Foxboro(福克斯波罗):I/A Series系统,FBM全系列(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、
数据通信及处理等。
Westinghouse(西屋):1C31系列DCS系统、CPU、OVATION系统、WDPF系统、
WEStation系统备件。
Triconex(英维思):冗余容错控制系统、基于三重模件冗余(TMR)结构的现代化的容错控制器。
EMERSON(艾默生):模块、卡件、驱动器等各类备件。
XYCOM:XVME系列
Bently(本特利):3500/3300系统。
Rockwell(罗克韦尔):ICS系统。
ABB:PM全系列DCS系统、IGCT高压变频器系列、工业机器人备件DSQC系列、INFI 90等。
Bailey(贝利):BRC系列DCS系统等。
Allen-Bradley:1756、1785、1771、1746全系列系统等。
Yokogawa(横河):CP系列等。
Honeywell(霍尼韦尔):TK/TC/CC系统等。
Reliance(瑞恩):57C系列等。
Schneider(施耐德):140系列处理器、控制卡、电源模块等。
Modicon(莫迪康):AS系列PLC系统备件。
Siemens(西门子):6ES5/6ES7414/6ES7415/6ES7416系列PLC系统备件、
Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
XYCOM:I/O、VME板和处理器等。
GE(通用电气):IC698/IC697全系列PLC系统、模块、卡件、驱动器等各类备件。
Yaskawa(安川):伺服控制器、伺服马达、伺服驱动器。
Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
Woodward(伍德沃德):SPC阀位控制器、PEAK150数字控制器。
For the chilled water system, the outlet water temperature depends on the set value of the evaporator, while the return water temperature depends on the heat received by the evaporator. The designed maximum temperature difference between the outlet water temperature of the chilled water and the return water temperature of the chilled water in the central air conditioning system is 5℃ (for example: The outlet water is 7℃, the return water is 12℃). Now the evaporator outlet water pipe and the return water pipe are equipped with the temperature detection of the transmitter, PID temperature regulator and frequency converter to form a closed-loop control system, through the frozen water temperature difference (such as: △T=5℃) control, can make the frozen water pump speed changes in accordance with the change of thermal load. 4.2
For the chilled water system, because the temperature of the cryogenic chilled water depends on the working condition of the cooling tower, we only need to control the temperature of the high-temperature chilled water (condenser water) to control the temperature difference. The temperature difference transmitter, PID regulator and frequency converter are used to form a closed-loop control system. The water temperature of the condenser is controlled at T2 (e.g 37℃), so that the speed of the cooling water pump changes according to the change of the thermal load