The new PosiTector DPM L+ dew point logger from DeFelsko works independently, unlike other measuring probes in the PosiTector series, which are usually coupled with a base unit. Its main field of application is in the area of heavy-duty corrosion protection. Attached to steel structures with a magnet, the device measures the environmental parameters relevant to the coating and records them autonomously over a period of up to 600 days. The data can be transferred wirelessly from the measuring instrument to a PC, Mac or tablet computer via Bluetooth or Wifi.
Improving the adhesion properties of paint
The dew point plays a decisive role in corrosion protection. When renovating the coating of bridge components, ship hulls, gas tanks, oil platforms or other steel objects, their surface must be completely dry so as not to impair the adhesion properties of the paint. According to DIN EN ISO 12944, the coating must not be applied at temperatures 3 Kelvin below the measured dew point. To ensure this, the appliance meticulously monitors the dew point via air temperature, surface temperature and relative humidity during the entire paint application process.
600 days in operation
AAA batteries ensure that the PosiTector DPM L+ dew point logger can remain in operation for up to 600 days. However, it can also be permanently connected to a power source via a USB interface. The well-sealed housing complies with protection class IP65. Thanks to the built-in magnet, it can be attached to any steel object.
Evaluation in the cloud
The device automatically uploads the measured values to the PosiSoft.net cloud storage operated by DeFelsko via Wi-Fi. The user can define intervals of between one minute and eight hours. Whenever the climatic conditions exceed preset threshold values, the system automatically sends an alarm by email and informs the user. This reliably ensures continuous quality assurance in corrosion protection.