The DR9051R is an RF transmitter that will accept both analog and switch contact inputs. A 12 bit A/D converter is used to digitize the analog data. Analog data and switch status is read when requested by the companion DR9050 Control Unit. The DR9050 polls the DR9051R and outputs the data in Modbus RTU format. A single DR9050 can poll up to 247 DR9051R’s utilizing a single Hop sequence.
The DR9051R has a repeater capability that is useful for data monitoring in areas where the DR9050 cannot communicate directly with a DR9051R due to distance or obstructions in the transmission path.
The switch inputs require a standard contact closure or an open collector NPN transistor.
Three radio modules are available for the DR9051R, two 915MHz band versions with 7 Hop sequences each and a 2.4GHz band version with 7 Hop sequences. They use spread spectrum, frequency hopping technology. These choices provide 21 different Hop sequences that allow 21 systems to work in the same locale without interfering with each other.
With proper antenna and cable selection and a 915MHz band version radio, the DR9051R can transmit up to 20 miles. The 2.4GHz band version can transmit up to 10 miles.
The DR9051R provides isolation between input and power source.
A 10 VDC precision power supply is built-in and provides excitation for up to four (4) 330 ohm bridges.
Screw terminal blocks that plug into the case allow easy wiring and removal of products.
All of the DR Series of products provide transient protection to help eliminate damage from lightning and from other transients created on the power and signal leads.
Wilkerson Instrument Co. 800-234-1343
