September 2013Maintenance, Test & Measurement, Calibration
The RAD-WHA-1/2NPT WirelessHART adaptor from Phoenix Contact simplifies and speeds up the retrofitting and expansion of systems with 4–20 mA signal cables. The adaptor is connected to an existing HART device in the field to transfer data wirelessly into a new system, while the original system based on just 4–20 mA remains intact.
Using the adaptor, new field devices are integrated into the network without having to route signal cables. Up to four HART devices can be connected, which increases efficiency and reduces material costs. Independently of these devices, the adaptor can be connected to an individual field device with 4–20 mA so that a digitised value can be sent. It is especially suitable for temporary monitoring applications and installations in Zone 2 environments, as it can be supplied with power from a 4–20 mA circuit or directly with 24 VDC.
For WirelessHART, TSMP (Time Synchronised Mesh Protocol) ensures redundancy regarding time and frequency, as well as fail-safe functionality to ensure that data is transmitted reliably under challenging wireless conditions. TSMP also provides the intelligence that is necessary for meshed data transfer. The result is a wireless network with a short range that can be installed without any special know-how.
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