All-purpose, non-magnetic, rugged: the ideal connector for SENSYS magnetometersTest & measurement, Fischer Freedom™ Series
- IP68 sealing
- Weather resistance
- Do not generate any magnetic fields
- Easy mating, preventing misuse
Main technical requirements
- Weather resistance
- Extremely low residual magnetism
- No misuse possible
Challenges & Opportunities
Safe operation in extreme environmental conditions
Ever since mankind first inhabited the Earth, he has left traces in the soil – whether in the form of prehistoric sites from past cultures or in the form of military relics from recently ended conflicts. Magnetometers help to locate and identify them. They detect any distortions or irregularities in the Earth’s magnetic field caused, for example, by objects or structures and can map their shape and position. SENSYS Sensorik & Systemtechnologie GmbH (SENSYS Magnetometers & Survey Solutions in English), based in Bad Saarow, in Brandenburg, Germany, supplies these kinds of special sounding equipment and solutions. Their magnetometers measure the magnetic field of the area under investigation, registering distortions or deviations and displaying any detected anomalies in the form of a geomagnetic colored map. The measurement is accurate to one or two centimeters. In order to examine a pre-determined section of ground, several magnetometers are connected in series and either attached to trolleys or to a vehicle. SENSYS magnetometers have to withstand extreme weather conditions. Since the measurements are taken on all kinds of terrain – from desert to jungle – and in extreme weather conditions ranging from -40 to +70 degrees Celsius and up to 100% humidity, the connectors also have to be extremely robust and hard-wearing. At the same time, it is important that no disturbing magnetic fields be generated by the cables. Because they are used in the field, maintenance and cleaning also need to be as simple and efficient as possible.
Since any form of magnetism on the components makes the measurement less precise, the devices – up to 16 connected in series – have to be attached to the vehicle with a drawbar up to seven meters long. On trollies it is also necessary to maintain a large distance from the mounts. This means that, when setting up the measuring equipment, lots of cabling is needed and the number of plugging processes and cycles involved in connecting, disconnecting, setting up and dismantling the devices is high, putting a strain on the equipment installed. This therefore calls for particularly durable and easily mated connections.
“We have all the components in our sensors tested for residual magnetism, because they mustn’t distort the measurement readings. The Fischer LP360™ is extremely satisfactory when it comes to its technical features. We’re fully satisfied with the cooperation. Fischer Connectors’ product range also provides suitable alternatives for other products. And we can discuss customized solutions any time. This connectivity specialist is also the right partner for us because it reacts very flexibly and supplies customized solutions in smaller volumes. This is very important for us, because we operate in niche markets and so don’t rank behind large manufacturers and don’t have to wait a long time for the products we’ve ordered.”Wolfgang Süß Managing Director, SENSYS
A single all-purpose connector
Up until that point, SENSYS had been using military-standard connectors (MIL connectors) in its field-measuring instruments. However, despite their robust design and suitability for continuous field use, these had several limitations. For example, they use male-female plug contacts that can break easily if used incorrectly and are difficult to clean. In addition, the plugs are cabled without any additional protection against moisture, so need to be laboriously covered with a special rubber grommet. SENSYS was therefore looking for a connectivity solution up to the IP68 sealing standard that would be easier to handle and maintain, preventing the risk of misuse. During routine checks on the inventory lists and components, the design engineers came across the first product in the innovative Fischer Freedom™ Series with “plug-and-use” technology, the Fischer LP360™ connector.
Selected connectivity solution
Fischer Fischer Freedom™
Plug size Ø (mm):
20.4 to 25.4
Solder | PCB | Wires | ZIF
IP67 to IP68