| 发明名称 |
DRY RUNNING DETECTION SYSTEM |
| 摘要 |
The dry running detection system for a pump includes an ultrasonic transducer (8) designed for arrangement inside a pump housing (24) and electrically connected to a frequency generator (2) producing an electrical signal having a predefined frequency. An analyzing unit (10) of the system analyses the electrical signal applied to the ultrasonic transducer (8) and is designed to detect whether the ultrasonic transducer (8) is in contact with a liquid or not on basis of the signal level of the electrical signal. |
| 申请公布号 |
US2015070036(A1) |
申请公布日期 |
2015.03.12 |
| 申请号 |
US201414483353 |
申请日期 |
2014.09.11 |
| 申请人 |
GRUNDFOS HOLDING A/S |
发明人 |
MUNK Flemming |
| 分类号 |
G01N27/06 |
主分类号 |
G01N27/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A dry running detection system for a pump, the detection system comprising:
a frequency generator producing an electrical signal having a predefined frequency; an ultrasonic transducer designed for arrangement inside a pump housing and electrically connected to the frequency generator; and an analyzing unit analyzing the electrical signal applied to the ultrasonic transducer and designed to detect whether the ultrasonic transducer is in contact with a liquid or not on basis of the signal level of the electrical signal. |
| 地址 |
Bjerringbro DK |
