Wireless DAQ System function over 20 mile range.

Press Release Summary:



System provides analog and contact inputs with analog and discrete outputs for point to point data acquisition. Wireless transmitter (DR9011) sends analog and contact closure data to companion DR9021, where it is recovered as two 4-20 mA outputs, and switch data is provided by optically isolated NPN transistors outputs. RF choices - 2 in 915 MHz ISM band and 1 in 2.4 GHz band - all use spread spectrum frequency hopping technology. Each RF module has choice of 7 Hop sequences.



Original Press Release:



New Wireless Data Acquisition System Provides Analog and Contact Inputs with Analog and Discrete Outputs for Point to Point Data Acquisition



The DR9011 wireless transmitter provides analog and contact closure data transmission to a companion DR9021 where the data is recovered. The analog data is recovered as two 4-20mA outputs and the switch data is provided by optically isolated NPN transistors outputs.

The analog inputs available are dual channel DC voltage or currents, single channel RTD, or strain gauge bridge inputs. The bridge version provides 10VDC precision excitation for up to four 330 ohm bridges. For the single channel inputs, the two 4-20mA outputs are both proportional to the single input.

The DR9011/DR9021 point to point system has a choice of 3 radio frequencies; 2 in the 915MHz ISM band and 1 in the 2.4GHz band. All use spread spectrum frequency hopping technology. Each RF module has a choice of 7 Hop sequences. This allows up to 21 systems to operate in the same locale without interfering with each other. With proper antennas and installation, the 915MHz units can function reliably over a 20 mile range. Full documentation can be read and downloaded at sensorad.com.

Wilkerson Instrument Company, Inc, which is celebrating its 25th birthday this year, designs and manufactures these products at 2915 Parkway Street in Lakeland, FL 33811.

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