珠海欧伯特测控技术有限公司为中频逆变点焊机提供电气比例阀961-112-000，气路系统主要由残压释放阀、空气过滤器、减压阀、油雾分离器、电气比例阀和油雾器组成，可实现过滤空气、调节气缸压力大小功能。在气路系统中配有储气罐用于提高气压的稳定。其中，电极加压力的调节采用电-气比例阀961-112-000，可快速设定气压，并与性能优越的德国博世逆变控制器相结合，实现焊接规范—电流、时间、压力的任意编程、储存、调用。大大提高了工厂对焊接工艺的管理水平。配置压力开关，当气源压力超出设定值时，焊机会自动停机并报警，有利于产品质量的控制和对焊机自身的保护。

•New, Compact Analog and Digital Controllers •I/P and E/P - field selectable •Broad pressure ranges
（vacuum to 600 psi in different models） •Input signal: 4-20 mA, 0-20 mA, 0-50 mA, 0-100 mA, etc. •Pressure output ranges easily set at factory or by user •Solenoid valves consume very little air or gas （on/off）   •Second loop （remote, downstream sensor） feed back available •Accuracy  typically  0.2-0.5% •Digital model available with Keypad display or RS485 Serial Bus Communication •Serial Bus Permits up to 24 units to be
controlled from PC through Visual Basic,
Labview, Devicenet or Pro-fibus （coming）

Model 3110/3120 & 3111 Operational Description •Standard command signal inputs are 0-10 VDC or 4-20 mA •Double Loop option （3120） permits 0-10 VDC feedback from a remote sensor •Many output ranges are available, from 29” Hg / 740 mm Hg vacuum to 600 psig / 41 BAR （in different models） •Two manifold blocks are available to provide a choice of mounting:
1. Front ports to mount directly to a panel or inserted into a DIN rail tray.
2. Bottom ports to mount on a multi-unit manifold. Custom, multi-unit manifolds available  

Model 3210/3220 Field Mounted Pressure Controller •Weatherproof Housing •Wide range of output pressures - 29” Hg Vacuum to 600 psig
（in different models） •Low flow 1.2 SCFM - for flows in excess of
2000 SCFM, mount on a booster •Optional output monitor signals available •Double loop （3220） permits 0-10 VDC
feedback for remote sensor