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INTRODUCTION
The Air Flow and Velocity Transmitter series is
intended for use in commercial environments. It is
designed with a duct mount probe and adjustable
collar suitable for round or rectangular ducts.
The transmitter provides separate readings for
air velocity and temperature. It comes with three
measurement ranges in a single device (0–2 m/s,
0–10 m/s, 0–20 m/s) and is available with optional
display and relay.
BEFORE INSTALLATION
Read these instructions carefully before attempting to install, operate or service this device.
Failure to
observe safety information and comply with instructions can result in personal injury, death and/
or property damage.
Disconnect power before installing or servicing device and only use wiring with
insulation rated for full device operating voltage.
Not for use in flammable or explosive environments.
MOUNTING
The transmitter should be mounted in an easily accessible location in a straight section of duct at least
five feet from corners or other items that may cause disturbances in the air flow. Avoid areas where the
detector is exposed to vibrations or rapid temperature changes.
Once a suitable location is selected, use the mounting flange as a template and mark the locations of the
two screws needed to mount the transmitter. Pre-drill the holes in the duct and mount the flange with
screws (not included). See Figure 1.
Adjust the probe to the desired depth. Ensure that the end of the probe reaches the middle of the duct.
Tighten the screws on the flange to hold the probe in position. See Figure 2.
For proper mounting orientation in relation to air flow direction, see Figure 3.
WIRING
For CE compliance a properly grounded shielding cable is required. Unscrew the strain relief and route the
cable(s). Use the strain relief on the left for power in and signal out. Connect the wires as shown in Figure
4 and then tighten the strain relief.
Select the desired measurement range by
installing the jumpers as shown in Figure 5.
To configure the temperature output (Tout) and
velocity output (Vout) select the output mode,
current (mA) or voltage (V), by installing the
jumpers as shown in Figure 6. Both output types
are configured separately.
To configure the switching point (display required)
install a jumper to pins labeled sw.p. (switching
point) as shown in Figure 7. Press down on the
Figure 1
Figure 3
Figure 2
Tighten screws
Insert probe
IN-GE-AVDTXXX-01 03/20
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Air Flow and Velocity
Transmitter
AVDT Series - Installation Instructions
