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    • 1. 发明授权
    • Sniffing leak detector
    • 嗅探器
    • US08752412B2
    • 2014-06-17
    • US12677631
    • 2008-09-01
    • Daniel WetzigStefan MebusNorbert Rolff
    • Daniel WetzigStefan MebusNorbert Rolff
    • G01M3/04G01N1/14G01N1/16
    • G01M3/205
    • A sniffing leak detector which comprises a first suction line in a sniffing probe, the line leading to a main device, is provided with a larger second suction line through which gas is sucked in from the sniffing tip by a gas delivery pump. By connecting the second suction line, the distance sensitivity is increased. By disconnecting the second suction line, on the other hand, the sensitivity is increased. Thus, it is possible to first search for leaks by use of a high gas throughput and subsequently exactly determine the leaks under the quantitative aspect by use of a reduced flow.
    • 一种嗅探检测器,其包括在嗅探针中的第一吸入管线,通向主要装置的管线,其具有较大的第二吸入管线,通过气体输送泵从嗅探尖端吸入气体。 通过连接第二吸入管线,距离灵敏度增加。 另一方面,通过断开第二吸入管线,灵敏度增加。 因此,可以首先通过使用高气体流量来搜索泄漏,并且随后通过使用减少的流量精确地确定在定量方面的泄漏。
    • 5. 发明申请
    • SNIFFING LEAK DETECTOR
    • US20100005861A1
    • 2010-01-14
    • US12311581
    • 2007-09-10
    • Daniel WetzigNorbert Rolff
    • Daniel WetzigNorbert Rolff
    • G01M3/04
    • G01M3/202
    • To achieve a large measurement range from small up to larger leakage rates, a switchover from normal operation to gross operation occurs. In gross operation, the sucked-in gas flow is separated by different throttles, wherein the throttle that leads to the test gas sensor has a low flow rate. This manner of operation prevents a too large quantity of test gas from reaching the sensor surface and contaminating the sensor. In another alternative, in gross operation the test gas flows only across a part of the sensor surface. The other part is flushed.
    • 为了实现从小到大泄漏率的大测量范围,发生从正常操作到总操作的切换。 在总操作中,吸入气流由不同的节流阀分开,其中通向测试气体传感器的节流阀具有低流量。 这种操作方式防止太大量的测试气体到达传感器表面并污染传感器。 在另一个替代方案中,在总体操作中,测试气体仅在传感器表面的一部分上流动。 另一部分被冲洗。
    • 7. 发明授权
    • Sniffing leak detector
    • 嗅探器
    • US08171773B2
    • 2012-05-08
    • US12311581
    • 2007-09-10
    • Daniel WetzigNorbert Rolff
    • Daniel WetzigNorbert Rolff
    • G01M3/16
    • G01M3/202
    • To achieve a large measurement range from small up to larger leakage rates, a switchover from normal operation to gross operation occurs. In gross operation, the sucked-in gas flow is separated by different throttles, wherein the throttle that leads to the test gas sensor has a low flow rate. This manner of operation prevents a too large quantity of test gas from reaching the sensor surface and contaminating the sensor. In another alternative, in gross operation the test gas flows only across a part of the sensor surface. The other part is flushed.
    • 为了实现从小到大泄漏率的大测量范围,发生从正常操作到总操作的切换。 在总操作中,吸入气流由不同的节流阀分开,其中通向测试气体传感器的节流阀具有低流量。 这种操作方式防止太大量的测试气体到达传感器表面并污染传感器。 在另一个替代方案中,在总体操作中,测试气体仅在传感器表面的一部分上流动。 另一部分被冲洗。
    • 8. 发明申请
    • Piston compressor
    • 活塞压缩机
    • US20060090477A1
    • 2006-05-04
    • US10537639
    • 2003-12-09
    • Norbert Rolff
    • Norbert Rolff
    • F25B9/00
    • F25B9/14F04B7/04F04B39/0005F04B39/0016F04B53/148
    • A piston compressor comprises a piston (12) which oscillates in a cylinder (14). A compressed-gas supply arrangement is provided which comprises a compressed-gas accumulator (34), a compressed-gas supply line (18) between a compressed-gas source (20) and the compressed-gas accumulator (34). Further, the compressed-gas supply line (18) comprises an inlet valve (42) which is open when the piston (12) is in a filling position. The inlet valve (42) is defined by a cylinder wall opening (22) and a piston wall opening (38) which are located opposite each other when the piston (12) is in the filling position, thus defining an open valve, and which are closed by the piston wall (40) and the cylinder wall (24), respectively, when the piston (12) is in the non-filling position, thus defining a closed valve. Thereby, a valve is provided which does not comprise any moving parts and is thus easy to manufacture, is highly reliable and has a long service life.
    • 活塞式压缩机包括在气缸(14)中振荡的活塞(12)。 提供一种压缩气体供应装置,其包括压缩气体储存器(34),压缩气体源(20)和压缩气体蓄积器(34)之间的压缩气体供应管线(18)。 此外,压缩气体供应管线(18)包括当活塞(12)处于填充位置时打开的入口阀(42)。 入口阀(4 2)由活塞(12)处于填充位置时彼此相对定位的气缸壁开口(22)和活塞壁开口(38)限定,从而限定开阀,并且 当活塞(12)处于非填充位置时,其分别由活塞壁(40)和气缸壁(24)封闭,因此限定了一个闭合的阀。 因此,提供了不包括任何运动部件并且因此易于制造,高可靠性并且具有长的使用寿命的阀。
    • 10. 发明授权
    • Circuit and method for measuring current in a circuit
    • 电路中测量电流的电路和方法
    • US5543706A
    • 1996-08-06
    • US244521
    • 1994-06-01
    • Norbert Rolff
    • Norbert Rolff
    • G01R15/09G01R19/00G01R19/165G01T1/29H03F3/72
    • H03F3/72G01R19/16528G01R19/16595
    • An electronic circuit for measuring current in a working circuit is provided with a first operational amplifier having a positive input, a negative input, and an output connected to at least one in-line amplifier to form a first current path. A second operational amplifier having a positive input, a negative input, and an output connected to a differential amplifier is provided within the circuit to form a second current path. An input terminal is connected to the negative inputs of each of the operational amplifiers to provide a connection between the electronic circuit and the working circuit. A variable conductance component is connected in series between the input terminal and the negative input of the second operational amplifier to control the flow of variable currents through the two current paths.
    • PCT No.PCT / EP92 / 02363 Sec。 371日期1994年6月1日 102(e)日期1994年6月1日PCT提交1992年10月14日PCT公布。 公开号WO93 / 11607 日期1993年6月10日用于测量工作电路中的电流的电子电路设置有具有正输入,负输入和连接到至少一个在线放大器以形成第一电流路径的输出的第一运算放大器。 具有正输入,负输入和连接到差分放大器的输出的第二运算放大器设置在电路内以形成第二电流路径。 输入端子连接到每个运算放大器的负输入端以提供电子电路和工作电路之间的连接。 可变电导分量串联连接在第二运算放大器的输入端和负输入端之间,以控制通过两条电流路径的可变电流的流动。