摘要:
An overpressure vent in a transmitter housing of a process transmitter. The transmitter is configured for coupling to an industrial process and measuring a process variable. The transmitter includes an enclosure having a cavity formed therein. A process coupling is configured to couple the cavity to the industrial process. The overpressure vent is arranged to vent an overpressure in the cavity to outside of the transmitter enclosure.
摘要:
A self-organizing mesh network is made up of individual devices configured to use other network devices to pass data from one point to another. The network also includes a secondary operating mode that accommodates handheld and other non-fixed transient network nodes. Each device in the network maintains a configuration link that is used to detect the presence of a handheld device. The handheld device uses the configuration link to identify nearby network devices. A user of the handheld device can then select one of the network devices and establish a small point-to-point subnetwork between the handheld device and the selected network device.
摘要:
A system for measuring and analyzing radio frequency power proximate and within a wireless field device mesh network. A centralized software module (CSWM) collects and analyzes values from one or more wireless devices of the wireless field device mesh network representing received RF power measurements on an assigned RF channel and values representing corresponding times of the received RF power measurements. Each wireless device measures received RF power on the assigned RF channel at times other than during reception of a signal resulting in transmission by the wireless device of either an acknowledgment signal or a non-acknowledgement signal. Values representing the received RF power measurements and the corresponding times of the received RF power measurements are determined from the stored received RF power measurements and corresponding times and then discarded. These values are stored within the wireless device until successfully reported. A network manager coordinates communication between the wireless devices and synchronizes the corresponding times of received RF power measurement throughout the wireless field device mesh network.
摘要:
A system for measuring and analyzing radio frequency power proximate and within a wireless field device mesh network. A centralized software module (CSWM) collects and analyzes values from one or more wireless devices of the wireless field device mesh network representing received RF power measurements on an assigned RF channel and values representing corresponding times of the received RF power measurements. Each wireless device measures received RF power on the assigned RF channel at times other than during reception of a signal resulting in transmission by the wireless device of either an acknowledgment signal or a non-acknowledgement signal. Values representing the received RF power measurements and the corresponding times of the received RF power measurements are determined from the stored received RF power measurements and corresponding times and then discarded. These values are stored within the wireless device until successfully reported. A network manager coordinates communication between the wireless devices and synchronizes the corresponding times of received RF power measurement throughout the wireless field device mesh network.
摘要:
A self-organizing mesh network is made up of individual devices configured to use other network devices to pass data from one point to another. The network also includes a secondary operating mode that accommodates handheld and other non-fixed transient network nodes. Each device in the network maintains a configuration link that is used to detect the presence of a handheld device. The handheld device uses the configuration link to identify nearby network devices. A user of the handheld device can then select one of the network devices and establish a small point-to-point subnetwork between the handheld device and the selected network device.