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Series 641RM Air Velocity Transmitter with Remote Probe

Series 641RM Air Velocity Transmitter with Remote Probe

SERIES AVLV AIR VELOCITY TRANSMITTER

1% and 2% Models, Optional BACnet MS/TP or Modbus®

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, provide a convenient way to local 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.

Product Applications

  • VAV systems
  • Building ducts
  • Clean room systems
Starting at $277.00
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Grouped product items
Model Description Availability* Qty Price
AVLV-1DA1 Air velocity transmitter, 1% accuracy, duct mount, universal current/voltage outputs 1-3 days*
$382.00
AVLV-1DA1-LCD Air velocity transmitter, 1% accuracy, duct mount, universal current/voltage outputs with LCD display 1-2 Weeks*
$425.75
AVLV-1DB1 Air velocity transmitter, 1% accuracy, duct mount, BACnet communication 1-2 Weeks*
$494.00
AVLV-1DB1-LCD Air velocity transmitter, 1% accuracy, duct mount, BACnet communication with LCD display 1-2 Weeks*
$537.75
AVLV-1DM1 Air velocity transmitter, 1% accuracy, duct mount, Modbus" communication 1-2 Weeks*
$494.00
AVLV-1DM1-LCD Air velocity transmitter, 1% accuracy, duct mount, Modbus" communication with LCD display 1-2 Weeks*
$537.75
AVLV-2DA1 Air velocity transmitter, 2% accuracy, duct mount, universal current/voltage outputs 1-3 days*
$277.00
AVLV-2DA1-LCD Air velocity transmitter, 2% accuracy, duct mount, universal current/voltage outputs with LCD display 1-2 Weeks*
$320.75
AVLV-2DB1 Air velocity transmitter, 2% accuracy, duct mount, BACnet communication 1-2 Weeks*
$389.00
AVLV-2DB1-LCD Air velocity transmitter, 2% accuracy, duct mount, BACnet communication with LCD display 1-2 Weeks*
$432.75
AVLV-2DM1 Air velocity transmitter, 2% accuracy, duct mount, Modbus" communication 1-2 Weeks*
$389.00
AVLV-2DM1-LCD Air velocity transmitter, 2% accuracy, duct mount, Modbus" communication with LCD display 1-2 Weeks*
$432.75

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 on catalog page.
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%):
4 s, typical; 1 s at constant temperature.
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:
5 digit LCD (optional).
Electrical Connections:
Analog: Power and output: four wire removable European style terminal block for 16 to 26 AWG; Communication: Connections: BACnet MS/ TP or Modbus® RTU/ASCII: three 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:
Flow direction must be parallel to the sensor tip.
Weight:
6.0 oz (160 g).
Compliance:
BTL, CE.

Features

  • Sensing elements have been coated with an engineered conformal coating to ensure durability and longevity
  • Field selectable ranges can be quickly configured without power to the unit

Product Literature

Manuals

Catalog Pages

Product Data Sheet

SlideShare

Model Chart

     AVLV-XXX-OPT    AVUL AIR VELOCITY TRANSMIITTER

         1ST SYMBOL (1ST X) ACCURACY
            1    +/- (1% OF READING + 0.2M/S) @ STANDARD CONDITIONS
            2    +/- (2% OF READING + 0.2M/S) @ STANDARD CONDITIONS
            
         2ND SYMBOL (2ND X) MOUNTING
            D     DUCT MOUNT

         3RD SYMBOL (3RD X) OUTPUT
            A1    ANALOG UNIVERSAL (0-5V 0-10V 4-20MA)
            B1    ANALOG + BACNET OUTPUT
            M1    ANALOG + MODBUS OUTPUT
            
         OPTIONS (OPT)
           -LCD    LCD DISPLAY            
           -FC     FACTORY CALIBRATION CERTIFICATE
           -NIST   NIST TRACEABLE CERTIFICATE
           -GLD    CABLE GLAND ACCESSORY
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Model Description Availability* Price
A-AVUL-MTG Replacement duct mount plate assembly 1-2 Weeks*
$6.70
A-AVUL-LCD Field upgradeable display. 1-2 Weeks*
$44.75