RI Wireless Valve Monitoring

Valve Monitoring Device

The RI Wireless Monitoring Device (VMD) is the basic component of the RI Wireless Monitoring System. It is installed on top of the monitored valve or actuator and consists of a stem attached mechanically to the valve or actuator axle.

The VMD incorporates the means and sensors to measure the angle which corresponds to the opening status of the valve (in degrees or opening percentage). The valve status is transmitted by an internal bi-directional transceiver that is based on the standard ZigBee protocol. A dedicated Loe Frequency (LF) receiver, in the VMD, supports unique maintenance and provisioning procedures.

Valve Device Router

The VDR (Valve Device Router) collects reported data from up to 32 associated VDs and wirelessly transfers the information to the next VDR.

The TVDR (Tunneling VDR) is the last-hop VDR that passes on all the collected data from the string of VDRs to the site network for processing and analysis.

ZigBee mesh technology is implemented ensuring the required routing redundancy for very high communication reliability.

Operator's Device

The OD (Operator's Device) is a mobile field operational panel for the RI Wireless Valve Monitoring System used by field operators. The OD enables operators to effectively perform a variety of operational, setup, maintenance and monitoring tasks related to all RI Wireless components (VMD, VDR, and TVDR).

The most basic functions of the OD are turning the devices ON/OFF, supporting installation and commissioning, and receiving real-time feedback in regard to the status of a particular Valve Monitoring Device (VMD).

Digital Input Box

The Digital Input Box (DIB) consists of a wireless monitoring module using the most advanced 2.4 GHz 802.15.4 communication protocols. It has 3 digital dry contact inputs and one analog input (future options.) The DIB is a non-routing sleepy device.

It is powered by four 1/2 AA batteries type Tadiran TL4902 that power the unit for more than 8 years assuming not more than 10 input changes per hour. Whenever one of the inputs changes state, the DIB reports the state of the three dry contact inputs and the timing between the dry contact events.

The DIB report the inputs state every configurable interval (8 sec to 60 min) or after it sensed a state change in one of the inputs. The DIB temperature, batteries status, the state of the three digital inputs, wireless signal strength, and other housekeeping information are broadcasted with every message. Each DIG message is transmitted with a real-time stamp.