型號(hào)描述
7800 型數(shù)字計(jì)量泵的特征在于，針對(duì)計(jì)量泵采用了一種全新的驅(qū)動(dòng)原理。通過(guò)一個(gè)受微處理器控制的步進(jìn)電機(jī)進(jìn)行驅(qū)動(dòng)，所述步進(jìn)電機(jī)通過(guò)一個(gè)曲柄連桿機(jī)構(gòu)與隔膜直接相連。與傳統(tǒng)計(jì)量泵不同，在這種設(shè)計(jì)中，可在整個(gè)吸氣沖程/壓縮沖程周期中，通過(guò)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(gè)更為均勻的計(jì)量過(guò)程，尤其在輸送量較小的情況下。計(jì)量泵 7800 始終使用的沖程長(zhǎng)度工作，這樣可以在整個(gè)調(diào)整范圍內(nèi)獲得一個(gè)高計(jì)量精度以及一個(gè)針對(duì)噴出介質(zhì)的低敏感度。通過(guò)經(jīng)優(yōu)化的、死角與完整沖程長(zhǎng)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(dòng)裝置非常適合高粘度液體的計(jì)量?？赏ㄟ^(guò)標(biāo)準(zhǔn)信號(hào) (4…20 mA)、外部脈沖（例如開(kāi)路集電極）和手動(dòng)方式控制計(jì)量泵 7800。通過(guò)較大的調(diào)整范圍 1:1000，只需利用 5 個(gè)泵尺寸即可完成從 0.002 l/h 到 48.0 l/h 的計(jì)量任務(wù)。
1）通過(guò)數(shù)控步進(jìn)電機(jī)驅(qū)動(dòng)裝置進(jìn)行連續(xù)計(jì)量
2）控制：0/4…20 mA，脈沖，時(shí)間和手動(dòng)
3）通過(guò)軟件限制計(jì)量功率
4）計(jì)量功率的調(diào)節(jié)范圍 1:1000
5）在整個(gè)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(jì)量泵7800型部分訂貨號(hào)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
