The Dwyer AVUL Series air velocity transmitter offers air velocity or volumetric flow of clean air and non-combustible, compatible gases. Simultaneous current and voltage outputs on AVUL models provide universal inputs to monitoring equipment while the output range, units, and 0 to 5/10 VDC output can be configured via local DIP switches. Zero and span adjustments can be made via digital push buttons.
Dwyer AVUL Series air velocity transmitters are available with a standard 5% accuracy or a 3% optional upgrade. The optional integral display on the AVUL series provides a convenient way to locally monitor process values and configure the unit. Additionally, optional BACnet MS/TP or Modbus® RTU/ASCII communication protocol allows units to be daisy-chained while providing access to all of the velocity and flow data, as well as additional information such as air temperature.
Accuracy: ±(5% of reading + 0.2 m/s) or ±(3% of reading + 0.2 m/s) @ standard conditions, depending on model.
Temperature Limits: 32 to 122°F (0 to 50°C).
Power Requirements: 24 VDC ±20% or 24 VAC ±20%.
Humidity Limits: 5 to 95% RH, non-condensing.
Output Signals: 4 to 20 mA, 0 to 5 VDC, 0 to 10 VDC.
Response Time (90%): 10 s, typical.
Zero & Span Adjustments: Digital push buttons.
Output Load Resistance: Current output: 0 to 1100 Ω max.; Voltage output: Minimum load resistance 1 kΩ.
Current Consumption: 60 mA max.
Display (optional): 5 digit LCD.
Electrical Connections (Analog): Power and output: four wire removable European style terminal block for 16 to 26 AWG.
Communication (optional): Connections: BACnet MS/TP or Modbus® RTU/ASCII: three wire removable European style terminal block for 16 to 26 AWG; Supported