型號描述

7800 型數(shù)字計量泵的特征在于，針對計量泵采用了一種全新的驅(qū)動原理。通過一個受微處理器控制的步進(jìn)電機進(jìn)行驅(qū)動，所述步進(jìn)電機通過一個曲柄連桿機構(gòu)與隔膜直接相連。與傳統(tǒng)計量泵不同，在這種設(shè)計中，可在整個吸氣沖程/壓縮沖程周期中，通過微處理器電子設(shè)備控制隔膜的位置和速度。受微處理器控制的壓縮沖程，能夠確保一個更為均勻的計量過程，尤其在輸送量較小的情況下。計量泵 7800 始終使用的沖程長度工作，這樣可以在整個調(diào)整范圍內(nèi)獲得一個高計量精度以及一個針對噴出介質(zhì)的低敏感度。通過經(jīng)優(yōu)化的、死角與完整沖程長度之間的關(guān)系，確保了精度和功能，即使在液體難以噴出的情況下。因此具有抗氣蝕功能，所以，該驅(qū)動裝置非常適合高粘度液體的計量?？赏ㄟ^標(biāo)準(zhǔn)信號 (4…20 mA)、外部脈沖（例如開路集電極）和手動方式控制計量泵 7800。通過較大的調(diào)整范圍 1:1000，只需利用 5 個泵尺寸即可完成從 0.002 l/h 到 48.0 l/h 的計量任務(wù)。

1）通過數(shù)控步進(jìn)電機驅(qū)動裝置進(jìn)行連續(xù)計量
2）控制：0/4…20 mA，脈沖，時間和手動
3）通過軟件限制計量功率
4）計量功率的調(diào)節(jié)范圍 1:1000
5）在整個調(diào)整范圍內(nèi)具有高精度

Type Description

The Type 7800 digital dosing pump is characterised by a drive principle that is completely new for dosing pumps. The drive is carried out by a microprocessor-controlled stepper motor, which is connected directly to the diaphragm by a crankshaft-and-connecting-rod drive. This means that, in contrast to conventional dosing pumps, the position and the speed of the diaphragm is controlled by the microprocessor electronics during the complete discharge/suction cycle. The microprocessor-controlled compression stroke results in a dosage that is considerably more even, particularly with small dosages. The 7800 dosing pump always works with the maximum stroke length, whereby a high accuracy for the dosing over the full setting range and a lower sensitivity with respect to gaseous media is achieved. Through an optimised clearance volume ratio with the full stroke length, the accuracy and function is ensured, even for diffi cult degassing liquids. Through the anticavitation function, the drive is optimally adapted to the dosing of high viscosity liquids. The 7800 dosing pump can be controlled manually, by standard signals (4…20 mA) and by external pulses (e.g., open-collector). Thanks to the wide setting range of 1:1000, it is possible to realise dosing tasks from 0.002 l/h to 48.0 l/h with only 5 pump sizes.

1）Continuous dosing through digitally controlled stepper motor drive
2）Controlled by: 0/4…20 mA, pulses, time and manually
3）Limitation of the max. dosage through software
4）Setting range for the dosage 1:1000
5）High accuracy over the complete setting range

數(shù)字計量泵7800型部分訂貨號如下：

560097 7800-1500-FF-PD-DA25-BER/56-BH-040 * MM05                                
560179 7800-1500-AA-VA-DA25-BER/56-BH-040 * MM05                                
787991 7800-0120-FF-PP-DA21-230/56-BX-006                                      
788109 7800-0480-FF-PP-DA37-230/56-BX-2,6                                      
788114 7800-0185-FF-PP-DA37-230/56-BX-6,2                                      
788306 7800-0075-FF-PD-DA21-230/56-BX-010                                      
788337 7800-0480-FF-PD-DA37-230/56-BX-2,6                                      
788339 7800-0120-FF-PD-DA21-230/56-BX-006                                      
788349 SET8-7800-0120PPFF-00-00-0-000/00-0                                      
788350 SET8-7800-0185PPFF-00-00-0-000/00-0                                      
788351 SET8-7800-0480PPFF-00-00-0-000/00-0                                      
788371 7800-0185-FF-PD-DA37-230/56-BX-6,2                                      
788372 7800-0025-FF-PP-DA21-230/56-BX-018                                      
788373 7800-0025-FF-PD-DA21-230/56-BX-018                                      
788468 7800-0025-AA-PP-DA21-230/56-BX-018                                      
788469 7800-0075-AA-PP-DA21-230/56-BX-010                                      
788470 7800-0120-AA-PP-DA21-230/56-BX-006                                      
788471 7800-0185-AA-PP-DA37-230/56-BX-6,2                                      
788472 7800-0480-AA-PP-DA37-230/56-BX-2,6                                      
788501 7800-0075-FF-PP-DA21-230/56-BX-010