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Series 641 Air Velocity Transmitter

Series 641RM Air Velocity Transmitter with Remote Probe

Series AVPT Pencil Style Air Velocity Transmitter

3% and 5% Models, Optional BACnet Communication Protocols

The Series AVPT Pencil Style Air Velocity Transmitter uses thermal anemometer technology to provide high accuracy and stable air velocity measurements in imperial and metric units. The Series AVPT can be configured with either a voltage output or BACnet MS/TP communication to provide universal inputs to a variety of monitoring equipment. Models are available with fixed cable lengths of 20 or 78 inches with flying leads or a 5-pin M12 connector on a 24 inch cable. Probes are available in lengths of 6 or 12 inches. A mounting flange included with the product provides the ability to vary insertion depth. Models are available in 3% or 5% accuracy to suit a variety of applications, while the optional BACnet MS/TP communication protocol allows units to be daisy-chained to provide access to all of the velocity and temperature measurements.

Product Applications

VAV systems
Building ducts

Starting at $196.55

Ordering

Filter By

3% Accuracy; 12" Probe Length

3% Accuracy; 6" Probe Length

5% Accuracy; 12" Probe Length

5% Accuracy; 6" Probe Length

Grouped product items
Model	Description	Availability*	Price
AVPT-S04C1A06	Air velocity transmitter, 5% accuracy, 4000 FPM, 6" probe, 20" pre-wired cable, analog output	1-2 Weeks*	$196.55
AVPT-S04C1A12	Air velocity transmitter, 5% accuracy, 4000 FPM,12" probe, 20" pre-wired cable, analog output	1-2 Weeks*	$216.30
AVPT-S20C1A06	Air velocity transmitter, 5% accuracy, 20 m/s, 6" probe, 20" pre-wired cable, analog output	1-2 Weeks*	$196.55
AVPT-S20C1A12	Air velocity transmitter, 5% accuracy, 20 m/s,12" probe, 20" pre-wired cable, analog output	1-2 Weeks*	$216.30

Specifications

Service:: Clean air.
Ranges:: 1000, 2000, 3000, or 4000 FPM (5, 10, 15, or 20 m/s); Model specific.
Accuracy:: Standard: ±(5% reading +40 FPM); High accuracy: ±(3% reading +40 FPM); Model specific.
Power Requirements:: 24 VAC/VDC ±20%.
Current Consumption:: < 50 mA.
Outputs:: Analog: 0-10 V (0-5 V configurable).
BACnet MS/TP:: Selectable at time of order.
Supported Baud Rate:: 9600, 19200, 38400, 57600, 76800, and 115200.
Voltage Output Load Resistance:: 10 kΩ minimum (10 V output with AC supply); 1 kΩ minimum all other conditions.
Electrical Connection:: Cable: Plenum rated cable with 22 AWG conductors.
5-Conductor Cable whip:: 20" (0.5 m) or 78" (2 m).
5-pin M-12:: 24" (0.6 m); model specific.
Response Time (90%):: 4 s, typical.
Operational Temperature Limits:: -4 to 140°F (-20 to 60°C).
Storage Temperature Limits:: -40 to 140°F (-40 to 60°C).
Probe Length:: 6" or 12"; model specific.
Enclosure Rating:: NEMA 3.
Mounting Orientation:: Flow direction must be parallel to the sensor tip; See Installation section for details.
Weight:: 1.4 oz (40 g); based on M12 connection with 12" probe length.
Compliance:: CE, RCM, BTL, UL plenum rated (UL tested).

Features

Sensing elements have been coated with an engineered conformal coating to ensure durability and longevity
Varying lengths for easy installation
Functionality at temperatures below freezing

Support Library

Product Literature

Manuals

Catalog Pages

Series AVPT Catalog Page

Product Data Sheet

AVPT

SlideShare

Approvals

Drawings

Videos

Model Chart

     AVPT-XXXXX-X-OPT    AVPT AIR VELOCITY TRANSMIITTER

          1ST SYMBOL (1ST X) ACCURACY
             S     STANDARD a5% RDG + 40 FPM
             H     HIGH ACCURACY a3% RDG + 40 FPM

          2ND SYMBOL (2ND X) AIR VELOCITY RANGE
             01    1000 FPM
             02    2000 FPM
             03    3000 FPM
             04    4000 FPM
             05    5 M/S
             10    10 M/S
             15    15 M/S
             20    20 M/S

          3RD SYMBOL (3RD X) ELECTRICAL CONNECTION
             C1    CABLE WHIP 20 INCH (0.5M)
             C2    CABLE WHIP 78 INCH (2M)
             M1    M12 CONNECTOR 24" (0.6M)

          4TH SYMBOL (4TH X) OUTPUT TYPE
             A     ANALOG 0-5V AND 0-10V
             B     BACNET MS/TP

          5TH SYMBOL (5TH X) PROBE LENGTH
             06    6 INCHES
             12    12 INCHES

          6TH SYMBOL (6TH X) BACNET ADDRESS
             ???   000-127 (WHOLE INTEGER)
                   (ONLY WITH OUTPUT B, OTHERWISE BLANK)
              
          OPTIONS (OPT)
            -FC     FACTORY CALIBRATION CERTIFICATE
            -NIST   NIST TRACEABLE CERTIFICATE

FAQ

Questions

Question

Are there any advantages to using a BACnet model other than the communications output?

Answer

When purchased with the BACnet communication option, the AVPT can display both the air velocity reading and temperature reading from a single device minimizing the need for an additional temperature sensor in the duct.

Related

Series AVPT

Question

The incorrect range was ordered in an AVPT; can I re-scale or calibrate this sensor in the field?

Answer

The AVPT models are calibrated to a specific range from the factory and cannot be re-ranged in the field.

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Series AVPT

Question

What is the maximum length that you can extend the wire leads?

Answer

The maxiumum cable length will vary depending on configuration and power supply; however, a 22 AWG shielded wire at 24V would provide suitable operation for most applications at a length of 328 feet (100 meters).

Related

Series AVPT

Question

Can the AVPT output volumetric flow readings

Answer

No, the AVPT is configured to output air velocity readings in FPM or M/S only. Consider looking at the AVUL for a unit able to output volumetric air flow.

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