MPC270巴赫曼
【厦门莫格电气自动化有限公司】
:雷琳(销售工程师) 电 话 :/
:1982497648 :
邮 箱:1982497648 传 真:(请备注雷琳收)
公司主营产品,优势供应,充足库存:
Bently Nevada(本特利):3500系统/3300系统,前置器探头等
德国EPRO MMS6000系统卡件 MMS3000系统卡件 PR6422 PR6423 PR6424 PR6426 PR9268等系列探头前置器备件。
ABB PLC系统模块 DCS系统卡件,包括一些停产的控制系统模块卡件。
GE燃机卡件IS200系列,DS200系列
Rockwell Allen-Bradley: SLC500/1747/1746、 MicroLogix/1761/1763/1762/1766/1764、
CompactLogix/1769/1768、
Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(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。
Invensys Triconex: 冗余容错控制系统、基于三重模件冗余(TMR)结构的zui现代化的容错控制器。
Westinghouse(西屋): OVATION系统、WDPF系统、WEStation系统备件。
Schneider Modicon(施耐德*康):Quantum 140系列处理器、控制卡、电源模块等。
ABB:工业机器人备件DSQC系列、Bailey INFI 90等。
Siemens(西门子):Siemens MOORE, 6ES5系列,6GK系列,6DD系列,6AR系列。
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 FANUC(GE发那科):模块、卡件、驱动器等各类备件,IC693,IC695,IC697 IC698等系列。
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。
Rosemount罗斯蒙特:压力变送器、流量计。
MPC270巴赫曼
电路工作原理
该温度控制器电路由电源电路和温度检测控制电路组成,如图4-46所示。
电源电路由电源开关S、熔断器FU、电源变压器T、整流一极管VDl、VD2和滤波电容器C组成。
温度检测控制电路由电接点温度计 Q、继电器K、二极管VD3、电阻器Rl、R2、昂闸管VT、氖指示灯HL和电热器EH组成。
接通S,交流220V电压经T降压、VDl和VD2整流及C滤波后,为继电器K提供+l2V工作电源。
刚接通电源时,被测温度低于电接 点温度计Q的设定值,Q的温度触点处于断开状态,继电器K处于释放状态,其常闭触点接通,晶刊管VT获得触发电流而导通,电热器EH通电开始加热,指示灯HL点亮。
当温度上升至Q的设定温度时,Q内部的温度触点接通,使K通电吸合,其常闭2007年10月22日触点断开,使VT的触发电流消失,在交流电过零时截止,EH断电而停止加热,同时HL熄灭。随后温度又开始缓慢下降,当温度降至Q的设定温度以下时,Q内部的温度触点又断开,K释放,VT导通,EH又通电开始加热,HL点亮……。如此周而复始,使受控温度恒定在设定温度上。
元器件选择
Rl和R2选用1/4W碳膜电阻器或金属膜电阻器。
C选用耐压值为25V的铝电解电容器。
VDl-VD3均选用1N4007型硅整流二极管。
VT选用耐压值为400V以上的双向晶闸管,其额定电流应为负载 (电热器)电流的1.5倍以上。
K选用JRX-l3F或JQX-4F型l2V直流继电器。
Q选用WSG型0-300T土O.1-0.5℃的电接点温度计。
T选用3-5W、二次电压为双l2V的电源变压器。
HL选用普通绿色氖指示灯。
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Gene Machines Mantis xFP Plaque/Colony Picker Counter
Varian NDI-225-21 Industrial Stationary Anode X-Ray Tub
Finnigan MAT PN: 70001-61340 Ion Gauge Controller Print
Honeywell/Senso?tec 41-B092-01-01 1000 Lbs Precision Low
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ITT Jennings RB2A-26N400/H-1?9 High Voltage Relay 20kVDC
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