Dwyer AVLV-2DA1-LCD Air Velocity Transmitter Instructions
- June 12, 2024
- Dwyer
Table of Contents
Dwyer AVLV-2DA1-LCD Air Velocity Transmitter
Product Information
The Series AVLV Air Velocity Transmitter is a device that is designed to quickly and accurately measure air velocity orvolumetric flow. It is capable of providing measurements in both imperial and metric units. The transmitter offers simultaneous current and voltage outputs on all models, allowing for universal inputs to monitoring equipment. The unit can be configured through local DIP switches, which control the output range, units, and 0-5/10 VDC, 4-20 mA output. Additionally, the transmitter can be equipped with an optional integral display or a portable remote tool for local monitoring and configuration.
Specifications
- Model: AVLV
- Accuracy: 2
- Mounting: Duct mount
- Output: Analog universal (0-5 VDC, 0-10 VDC, 4-20 mA)
- Options: FC Factory calibration certificate, GLD Electrical cable gland, LCD LCD display, NIST NIST certificate
Accuracy Chart
The accuracy of the measurements depends on the specific model selected when ordering. Please refer to the accuracy rating provided for each model.
Warranty
The Series AVLV Air Velocity Transmitter comes with a year limited warranty.
Product Usage Instructions
- Choose the appropriate model of the Series AVLV Air Velocity Transmitter based on your requirements.
- Mount the transmitter in the duct using the duct mount option.
- If necessary, connect the electrical cable gland for secure cable connection.
- Configure the output range, units, and 0-5/10 VDC, 4-20 mA output using the local DIP switches.
- If desired, attach the optional integral display or use the portable remote tool for local monitoring and configuration.
- Refer to the accuracy chart to determine the accuracy rating of your specific model.
- For any warranty claims or issues, contact DWYER INSTRUMENTS, LLC.
Note: Please refer to the complete user manual for detailed instructions and safety guidelines.
DIMENSION
The Series AVLV Air Velocity Transmitter quickly and accurately measures air velocity or volumetric flow in imperial or metric units. Simultaneous current and voltage outputs on all models provide universal inputs to monitoring equipment while the output range, units, and 0-5/10 VDC, 4-20 mA output can be configured via local DIP switches. The optional integral display, or the portable remote tool, provides a convenient way to locally monitor process values and configure the unit. Models are available in 1% and 2% accuracy models and low velocity ranges to suit a variety of needs, and the 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. The lower ranges in these high-accuracy units allow for applications in quality-intensive environments, such as the pharmaceutical industry.
BENEFITS/FEATURES
- Minimal preventative maintenance as sensing element is covered with an engineered protective coating
- Easy field setup via the on board dip switches for range and units
APPLICATIONS
- VAV systems
- Building ducts
- Clean room systems
MODEL CHART
Example| AVLV| -2| D| A1| -LCD| AVLV-
2DA1-LCD
Model| AVLV| | | | | Air velocity transmitter
Accuracy| | 2
1
| | | | ± (2% of reading + 0.06 m/s)
± (1% of reading + 0.06 m/s)
Mounting| | | D| | | Duct mount
Output| | | | A1 B1
M1
| | Analog universal (0-5 VDC, 0-10 VDC, 4-20 mA) Analog + BACnet MS/TP
Analog + Modbus® RTU/ASCII
Options| | | | | FC GLD LCD
NIST
| Factory calibration certificate Electrical cable gland
LCD display
NIST certificate
SPECIFICATIONS
- Service: Clean air and non-combustible, compatible gases.
- Wetted Materials: Consult factory.
- Range: 100, 200, 300, 400 FPM (0.5, 1, 1.5, 2 m/s); field selectable.
- Accuracy: See chart.
- 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: 4-20 mA, 0-5 VDC, 0-10 VDC.
- Response Time (90%): 4 s, typical; 1 s at a constant temperature.
- Zero and 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: 5-digit LCD (optional).
- Electrical Connections: Analog
- Power and output: 4-wire removable European-style terminal block for 16 to 26 AWG;
- Communication: Connections: BACnet MS/
- TP or Modbus® RTU/ASCII: 3-wire removable European-style terminal block for 16 to 26 AWG.
- Supported Communication Baud Rates: 9600, 19200, 38400, 57600, 76800, 115200 (optional).
- Device Load: 1/8 unit load.
- Electrical Entry: 1/2˝ NPS thread;
- Accessory: Cable gland for 5 to 10 mm diameter cable, A-151.
- Enclosure Rating: NEMA 4X (IP66).
- Mounting Orientation: The flow direction must be parallel to the sensor tip.
- Weight: 6.0 oz (160 g).
- Compliance: BTL, CE.
ACCURACY CHART
Velocity Range| **Accuracy Rating***
20 to 100 FPM (0.15 to 0.5 m/s)
20 to 200 FPM (0.15 to 1.0 m/s)
20 to 300 FPM (0.15 to 1.5 m/s)
20 to 400 FPM (0.15 to 2.0 m/s)
| ± (2% of reading + 0.04 m/s [7.9 FPM])
± (1% of reading + 0.04 m/s [7.9 FPM])
± (2% of reading + 0.04 m/s [7.9 FPM])
± (1% of reading + 0.04 m/s [7.9 FPM])
± (2% of reading + 0.05 m/s [9.8 FPM])
± (1% of reading + 0.05 m/s [9.8 FPM])
± (2% of reading + 0.06 m/s [11.8 FPM])
± (1% of reading + 0.06 m/s [11.8 FPM])
*Accuracy dependent on model selected when ordering.
Modbus® is a registered trademark of Schneider Electric USA, Inc DWYER INSTRUMENTS, LLC dwyer-inst.com.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>