The WASP-VW is a variant of the popular WASP mA datalogger that is extremely compact, easy to use, low power & quick to deploy. The WASP-VW takes readings from vibrating wire sensors and their built-in thermistors & transmits the readings wirelessly over the mobile Internet to the secured and dedicated WASP web portal for storage, processing, display or forwarding for further processing. Controlling and configuring the logger is very simple and is done using the same cloud-based web portal.
The WASP-VW comprises two parts: the digital WASP datalogger (WASP-D) and the VWstalker vibrating wire interface. Each VWstalker has 4 channels, 2 for the VW sensors and 2 for the thermistors. Each WASP-D can power and control up to 2 VWstalkers while running on its internal battery pack. The WASP-D communicates with the VWstalker using the SDI-12 protocol.
Prior to installation, the VWstalker can be programmed and pre-wired to the WASP-D. Once on site, VW sensors are connected to the sensor leads from the VWstalker. The user then logs on to the web portal to configure the sensors and set up a logging and reporting schedule.
The WASP-VW is ideal for new and retro-fit geotechnical and structural monitoring projects where unattended data collection of readings from vibrating wire sensors is required.