Accutrol VTS User manual

Installation & Operation Manual - Model VTS
Contents of this Manual are Subject to Change Without Notification
Airflow Measurement
Station
Manufactured by: Accutrol Representative:
VTS MANUAL REV A
AccuStation
21 Commerce Drive
Danbury, CT 06810 USA
WWW.ACCUTROLLLC.COM

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LIMITED WARRANTY
Accutrol LLC, having its principal place of business at 21 Commerce Drive, Danbury, CT USA
("Manufacturer") warrants its AccuStation®, Model VTS product (the "Products") as follows:
1. Limited Warranty.
Manufacturer warrants that the Products sold hereunder will be free from defects in material
and workmanship for a period of sixty (60) months from the date of purchase. If the Products
do not conform to this Limited Warranty during the warranty period (as herein above
specified), Buyer shall notify Manufacturer in writing of the claimed defects and demonstrate to
Manufacturer’s satisfaction that said defects are covered by this Limited Warranty. If the
defects are properly reported to Manufacturer within the warranty period, and the defects are
of such type and nature as to be covered by this warranty, Manufacturer shall, at its own
expense, furnish, replacement Products or, at Manufacturer's option, replacement parts or
services for the defective Products. Shipping and installation of the replacement Products or
replacement parts shall be at Buyer's expense.
2. Other Limits.
THE FOREGOING IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. Manufacturer does not warrant against damages or defects arising out
of improper or abnormal use or handling of the Products; against defects or damages arising
from improper installation (where installation is by persons other than Manufacturer), against
defects in products or components not manufactured by Manufacturer, or against damages
resulting from such non-Manufacturer made products or components. Manufacturer passes on
to Buyer the warranty it received (if any) from the maker thereof of such non-Manufacturer
made products or components. This warranty also does not apply to Products upon which
repairs have been affected or attempted by persons other than Manufacturer or pursuant to
written authorization by Manufacturer. This warranty also does not apply to any product
provided by the Buyer and mounted by the Manufacturer to Products.
3. Exclusive Obligation.
THIS WARRANTY IS EXCLUSIVE. The sole and exclusive obligation of Manufacturer shall be to
repair or replace the defective Products in the manner and for the period provided above.
Manufacturer shall not have any other obligation with respect to the Products or any part
thereof, whether based on contract, tort, and strict liability or otherwise. Under no
circumstances, whether based on this Limited Warranty or otherwise, shall Manufacturer be
liable for incidental, special, or consequential damages.
4. Other Statements.
Manufacturer's employees or representatives' ORAL OR OTHER WRITTEN STATEMENTS DO NOT
CONSTITUTE WARRANTIES, shall not be relied upon by Buyer, and are not a part of the contract
for sale or this limited warranty.
5. Entire Obligation.
This Limited Warranty states the entire obligation of Manufacturer with respect to the
Products. If any part of this Limited Warranty is determined to be void or illegal, the remainder
shall remain in full force and effect.

Installation & Operation Manual - Model VTS
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TABLE OF CONTENTS
LIMITED WARRANTY................................................................................................................ii
TABLE OF CONTENTS...............................................................................................................iii
SECTION 1 - INTRODUCTION................................................................................................... 4
SECTION 2 - SPECIFICATIONS ................................................................................................. 5
SECTION 3 –PHYSICAL DIMENSIONS & WEIGHTS ............................................................ 9
SECTION 4 - INSTALLATION .................................................................................................. 10
SECTION 5 –WIRING................................................................................................................ 13
SECTION 6 –ACCUSTATION INSIGHT CONFIGURATION SOFTWARE......................... 14
SECTION 7 –OPTIONAL BACNET MS/TP............................................................................. 22
SECTION 8 –MAINTENANCE ................................................................................................. 24

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SECTION 1 - INTRODUCTION
The VTS product family is intended for applications that require accurate and repeatable airflow
measurement with high turn-down for applications that have challenging inlet conditions. The
VTS incorporates a state-of-the-art vortex shedding digital transmitter with an intuitive user-
interface software known as the AccuStation Insight.
1.1 Theory of Operation (Reference the Diagram Below)
The AccuStation®divides the airflow into two equal chambers using an airfoil shaped
compression section. As air enters the chambers it accelerates and compresses, creating an
ideal condition for measuring airflow velocity. The vortex shedding airflow sensors provide a
highly repeatable digital pulse-train with a frequency that is directly proportional to the air flow
velocity in each chamber of the AccuStation.
The digital pulses generated by each vortex shedding sensor are used to calculate the total
airflow volume flowing through the AccuStation. The transmitter provides a software-
selectable analog output signal that is directly proportional to the total airflow volume
measurement. The airflow volume can also be provided directly to the building management
system’s BACnet MS/TP network by ordering the optional BACnet MS/TP communications
module.
Field configuration is accomplished through AccuStation Insight, which is an intuitive user-
interface software. Connection between the VTS and the computer is provided through a USB
port located on the VTS transmitter or optional remote monitor.
1.2 Model Code
2 = 304SS, 20 GAUGE
3 = 316SS, 20 GAUGE
4 = ALUMINUM, 16 GAUGE
SIZE
06 = 06" DIAMETER
08 = 08" DIAMETER
10 = 10" DIAMETER
12 = 12" DIAMETER
14 = 14" DIAMETER
18 = 12"x18" RECTANGULAR
24 = 12"x24" RECTANGULAR
36 = 12"x36" RECTANGULAR
48 = 12"x48" RECTANGULAR
VTS -
BLANK = NO OPTIONS
B = BACnet MS/TP
F = FLANGES
I = INSULATION
HOUSING MATERIAL OPTIONS
SIZE
1.3 Accusation Types
Round AccuStation
Sizes 06, 08, 10, 12 and 14
Rectangular AccuStation
Sizes 18 and 24
Rectangular AccuStation
Sizes 36 and 48

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SECTION 2 - SPECIFICATIONS
PERFORMANCE
Accuracy
+/- 5% of reading or 5 CFM, whichever is greater
Min Operating Pressure
Reference Section 2.1
Airflow Range
Reference Section 2.1
ENVIRONMENTAL
Temperature
Airstream: -20 to 165 deg. F
Ambient: -20 to 125 deg. F
Storage: -40 to 165 deg. F
Humidity
0 to 90% non-condensing
TRANSMITTER ELECTRICAL
Power Supply
24 VAC +/- 20% 50/60 Hz, 4 VA max (8.5 VA max with remote monitor)
24 VDC +/- 10% 1.5 W max (3.5 W max with remote monitor)
Output Signal
Software Configurable; 0-20mA, 4-20mA, 0-10V, 2-10V, 0-5V, or 1-5V
12-bit Resolution capable of driving 1K-ohm load
Configuration Port
USB 2.0, Isolated, C Type Connector
Power Source Switch
Operational Position: Draws power from 24V input terminal block
Nonoperational Position: Draws power from 5V USB port (Use for configuration only)
BACnet MS/TP (Optional)
EIA 485 2-wire BACnet MS/TP, Galvanically Isolated
Data Rates 9600, 19200, 38400, 57600, 76800 and 115200
1/8 Unit Load Receiver Input Impedance
Network bias and EOL Termination not provided within the Transmitter
Remote Monitor Sold
Separately
LCD, 2 lines x 8 characters with white LED backlight
Includes USB Configuration Port and Factory Cable
Terminal Plugs
3-position, vertical pluggable, screw on top, wire size 12-30 AWG
EMC
Safety
EN 61326-1:2013, 2014/35/EU (LVD), 2014/30/EU (EMC)
EN 61010-1:2010
FCC Part 15
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the
interference at the user’s own expense. This Class A digital apparatus meets all requirements
of the Canadian Interference-Causing Equipment Regulations.
Model Code Material
Designator
(2) 304SS
(3) 316SS
(4) Aluminum
Housing
304L SS
316L SS
Alum. 5052-H32
Compression Section
304L SS
316L SS
Alum. 5052-H32
Static Regain Section
304L SS
316L SS
Alum. 5052-H32
End Plate
304L SS
316L SS
Glv. Steel
Vortex Sensors
Polycarbonate
UL94-VO
Polycarbonate
UL94-VO
Polycarbonate
UL94-VO
Sensor Tubing
Polyurethane,
Ether-based
Polyurethane,
Ether-based
Polyurethane,
Ether-based
MATERIALS OF CONSTRUCTION (In Airstream)

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2.1 Operating Range
The operating range of each AccuStation is provided below along with a characteristic curve
showing the relationship between the minimum operating pressure and maximum airflow
volume as tested in accordance with ANSI/ASHRAE STD 130.
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
25 50 75 100 125 150 175 200 225 250 275 300 325
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
100 150 200 250 300 350 400 450 500 550 600 650 700 750 800
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
Station DP ("wc)
Max Airflow (CFM)
6” AccuStation
Operating Range: 0-315 CFM
Min. Measurement: 30 CFM
8” AccuStation
Operating Range: 0-800 CFM
Min. Measurement: 80 CFM
10” AccuStation
Operating Range: 0-1300 CFM
Min. Measurement: 120 CFM

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0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
200 400 600 800 1000 1200 1400 1600 1800
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
300 600 900 1200 1500 1800 2100 2400 2700
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
400 800 1200 1600 2000 2400 2800 3200
Station DP ("wc)
Airflow (CFM)
12” AccuStation
Operating Range: 0-1790 CFM
Min. Measurement: 180 CFM
14” AccuStation
Operating Range: 0-2750 CFM
Min. Measurement: 250 CFM
12x18” AccuStation
Operating Range: 0-3200 CFM
Min. Measurement: 260 CFM

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0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
500 1000 1500 2000 2500 3000 3500 4000
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
800 1600 2400 3200 4000 4800 5600 6400
Station DP ("wc)
Max Airflow (CFM)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
1000 2000 3000 4000 5000 6000 7000 8000
Station DP ("wc)
Max Airflow (CFM)
12x24” AccuStation
Operating Range: 0-4000 CFM
Min. Measurement: 350 CFM
12x36” AccuStation
Operating Range: 0-6400 CFM
Min. Measurement: 520 CFM
12x48” AccuStation
Operating Range: 0-8000 CFM
Min. Measurement: 700 CFM

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SECTION 3 –PHYSICAL DIMENSIONS & WEIGHTS
3.1 Round AccuStation Sizes
Transmitter
Housing
D
Access Cover
L
Inlet Discharge
H
11"
(280mm)
3.2 Rectangular AccuStation Sizes
11.88"
302mm
W
30"
762mm
Access Cover Transmitter
Inlet View
19"
483mm
Note: All dimensions are to the “outside” and have a tolerance of +/- .062” (1.6mm).
Model Size
Dimensions
Weight
“D”
“L”
“H”
Stainless Steel
Aluminum
in.
mm
in.
mm
in.
mm
Lbs.
kg
Lbs.
kg
06
5.88
149
22
559
10
254
11
5.0
7
3.2
08
7.88
200
24
610
13
330
12
5.4
8
3.6
10
9.88
250
24
610
15
381
16
7.3
10
4.5
12
11.88
300
27
686
17
432
22
10.0
12
5.4
14
13.88
350
30
762
19
483
25
11.3
15
6.8
Model Size
Width “W”
Weight
Ref Diagram
Stainless Steel
Aluminum
in.
mm
Lbs.
kg
Lbs.
kg
18
17.88
454
37
16.8
20
9.1
24
23.88
607
43
19.5
23
10.4
36
35.88
911
88
39.9
50
22.7
48
47.88
1216
98
44.5
58
26.3

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SECTION 4 - INSTALLATION
Read all instructions and review the installation diagrams provided on the following pages prior
to beginning installation. Also reference the product submittal drawings before proceeding.
CAUTION: Wear eye protection, cut-resistant gloves, and clothing suitable for working
with sheet metal. Failure to do so may result in personal injury.
1. Verify the tag number located on the station label matches the HVAC schedule.
2. Locate the duct section which the station is servicing and select a suitable mounting
location for the station.
NOTE: the AccuStation does not require straight-run inlet conditions to operate properly,
however it’s always best to follow HVAC Best Practices for Commercial Buildings during
installation which includes locating the station away from transitions and bends to
minimize impact on system static pressure. Also, be sure to select a location that will
provide a minimum clearance of 14” (356mm) unobstructed access to the transmitter
and station access cover.
3. Provide an opening in the duct section sized appropriately for the station being
installed.
NOTE: A slip-fit station will require an opening approximately 2” smaller than the station
length and a flanged station will require an opening the same as the station length. For
station dimensions, reference Section 4.
4. Install duct hangers within 12” (305mm) from each end of the station connections.
Reference Section 4 for station weights.
WARNING:Use duct hangers and hardware designed to support the total load of the
station and associated duct sections. Failure to do so may result in serious personal
injury or death.
5. Install the station into the duct in accordance with the airflow direction label located on
the station. Position the station for easy access to the transmitter side. Since the
AccuStation is not position sensitive, it can be installed in any plane or rotational axis
without having impact on the performance.
NOTE: Screws, nuts, fasteners, duct sealant, hangers, companion flanges and gaskets
are NOT provided by Accutrol.

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4.1 Round Station Installation Diagrams
Standard Slip-fit Station Secured to Duct with Tek Screws.
Standard Slip-fit Station Secured to Duct with Draw Band Clamps
Flanged Station “Option –F” Secured to Duct with Companion Flanges and Hardware
Install companion flanges to duct ends and secure to duct.
14" (356mm)
Minimum Clearance
Apply duct sealant and/or gasket to flange face.
Install AccuStation and secure flanges using tek-
screws.
3. Install gaskets and/or duct sealant between
the station flanges and companion flanges.
DISCHARGE
1. Slip the draw band clamps over each end of the duct.
3. Slip the discharge end of the
station into the duct 1” at each
end.
4. Position station to provide
unobstructed access to the
transmitter and access panel.
Locate duct supports within 12” of each end of the station.
DISCHARGE
INLET
4. Secure station to duct
using tek-screws.
6. Secure both ends of station to the duct using draw band clamps.
2. Slip the station inlet into the fan side of the duct far
enough to allow the station to be lifted into the duct
opening.
4. Apply duct sealant and secure station to duct at
both ends using tek-screws.
Locate duct
supports
within 12”
of each end
of the
station.
1. Slip the companion flanges over each end of the duct and install the valve inlet to fan side of ductwork.
2. Slip the discharge end of the
station into the duct 1” at each
end.
2. Position station to provide unobstructed
access to the transmitter and access panel.
3. Position station to provide
unobstructed access to the
transmitter and access panel.
5. For clean air applications,
apply UL181 compliant foil tape
over the station/duct seams.
1. Slip the inlet end of station into the fan side
of the duct far enough to allow the station to be
lifted into the duct opening.
DISCHARGE
Locate duct supports within 12” of each end of the station.
For corrosive exhaust applications, apply PTFE tape
(available from Accutrol) over the station/duct seams.

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4.2 Rectangular Station Installation Diagrams
Station Sizes 18 and 24
Station Sizes 36 and 48
14" (356mm) Minimum Clearance
Mounting
Struts
Support Here
Flanged Station “Option –F”
Locate duct supports within 12” of each end of the station.
14” (356mm) Min. Clearance for Access to this Side
INLET
DISCHARGE
Air Flow Direction
4. Slip the discharge end of the
station into the duct engaging station
into duct 1” at each end.
2. Lift station into position to provide
unobstructed access to the transmitter
and access panel.
3. Slip the inlet end of station into the
duct far enough to allow the station
to be lifted into the duct opening.
3. Install gaskets and/or duct
sealant between the station
flanges and companion flanges.
5. Secure both ends of station to
duct using tek screws and duct
sealant.
1. Verify the opening in the duct is properly sized for the station and installation method being used. Also verify
both ends of the duct where the station is to be attached are true and square before attempting to install station.
If the duct ends are not square and true, do not attempt to install station as it will not operate properly.
The 36” and 48” wide stations are provided with integral mounting struts to help support the weight of the
stations. In addition to following the installation instructions above, each end of the strut shall be secured to
the building structure using properly rated hardware and methods in accordance with local building codes.
NOTE: It’s acceptable to fabricate and install flanges onto the AccuStation and ductwork on location. If
flanges are fabricated on site, it’s still important to verify both ends of duct are true and square prior to
and after installing flanges, otherwise the station will not operate properly.
1. Install companion flanges
(provided by others) over each
end of the duct.
Secure both ends using tek-screws
Apply Duct Sealant and/or Gasket, then
14” (356mm) Min. Clearance for Access to this Side
DISCHARGE
INLET
2. Lift the station into position
to provide unobstructed access
to the transmitter and access
panel.
4. Secure both ends using tek-screws.

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SECTION 5 –WIRING
5.1 VTS Transmitter Description
5.2 Wiring Instructions
1. Remove cover and route cables through strain relief fitting into enclosure.
2. Remove terminal block plug(s) and connect wires to the appropriate terminals.
3. Secure terminal screws and reinstall plug(s).
4. Insert the ratcheting strain relief over cable(s) and push down until snug.
5. Reinstall cover and secure thumb screw.
5.3 Transmitter Wiring Diagram: The figure below is shown with the optional BACnet module
installed and the remote monitor connected.
24 vAC
24 vDC
or
Analog Input
BMS Controller /
Signal Receiving
Device
+
Common
Power Source
BACnet MSTP Bus
VTS Transmitter
Remote
Monitor
Factory
Cable
Clear Tubing
Connected to Sen 1
Black Tubing
Connected to Sen 2
CAUTION: Maintain polarity if power source is used for multiple devices, otherwise
equipment may be damaged.
Captive Thumb Screw for Removing/Securing Cover
Cable Entry
with Ratcheting
Strain Relief
NOTE: If a direct conduit connection is
required, remove strain relief fitting and
replace with a .875 (22mm) conduit
fitting. (Provided by Others)
Connection from optional monitor using
factory supplied cable.
Alternate
Cable Entry
Cover Tab Slot

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SECTION 6 –ACCUSTATION INSIGHT CONFIGURATION SOFTWARE
AccuStation Insight is a software configuration tool that provides a means to communicate
directly with the AccuStation. All that’s required is a Windows 10 computer or tablet with a
USB Port, USB cable and the AccuStation Insight Software.
6.1 Minimum Requirements for PC
•Windows 10 computer or tablet with a USB 2.0 port
6.2 Installing the AccuStation Insight Software
Before starting the install process, close any programs running on the computer.
•Download the AccuStation Insight Software from http://www.accutrolllc.com.
•Run setup and follow the on-screen instructions.
6.3 AccuStation Insight Software Product Registration
After the software has been installed on your computer, you will need to register the product
and obtain a valid software key from the factory by performing the following steps.
Note: This process will require an automatic email to be generated from your computer,
therefore you will need to have internet access to generate the key request.
a. Double click on the desktop shortcut created during installation.
b. Complete the Product Registration Form.
c. Select “Request Product Key” to generate a “key request” email to the factory.
d. The factory will issue a Product Key to the email provided on the Registration Form.
e. Copy and paste the Product Key into the field provided at the bottom of the form then
select “Register Product Key”.
f. You will now be able to use the AccuStation Insight Software on this computer. If you
have any problems, contact Accutrol LLC at 203-445-9991.
6.4 Connecting the PC to the VTS Transmitter
6.4.1 For connecting directly to the VTS Transmitter, remove the cover from the transmitter
and connect the USB cable into the USB C type connector located on the transmitter per
the figure below.
USB CONFIGURATION PORT
Connect to PC with Accutrol
Insight Config. Software Only
VTS
Windows 10
Computer with
AccuStation
Insight Software

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6.4.1.1 Power Source Switch
The VTS Transmitter pcb has a Power Source Switch which should always be in the
“Operational Position” for the transmitter to function normally. The “Nonoperational
Position” is provided so the transmitter can be programmed or configured when there is no
24v power source available. This is a convenient feature for configuring the BACnet
parameters or the transmitter’s analog output prior to having the 24V power source wired.
Operational Position
Nonoperational Position
24V power is provided to the transmitter
through the 24V connector. This is the
normal position for the Power Source
Switch.
5Vdc power is provided to the
transmitter through the computer
connected to the USB Configuration Port.
This is a temporary position only.
Note: The Power Source Switch must be returned to the Operational Position after
completing the configuration otherwise the transmitter will not function.
6.4.2 For connecting to the VTS through the Monitor (sold separately); remove the rubber
dust plug protecting the Monitor’s USB port and insert the USB cable into the USB C
connector located on the Monitor. Be sure to reinstall the rubber dust plug on the
Monitor when finished.
1. The Power Source Switch on the transmitter must be in the Operational Position
when the Monitor is connected. The Nonoperational Position shall not be used
when the Monitor is connected to the VTS.
2. Verify the transmitter is powered prior to connecting the computer to the Monitor
USB port.
VTS
Factory cable provided
with Remote Monitor
Windows 10
Computer with
AccuStation
Insight Software
Remote Monitor
(sold separately)
Notes:

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6.5 AccuStation Insight Software
To open the AccuStation Insight application double click on the desktop shortcut or go
to the Start Menu and select Programs > AccuStation Insight.
To communicate to the VTS via USB connection, select “Locate Accutrol Devices” then select
the com port associated with the VTS that your computer is connected to.
6.5.1 Insight Dashboard
The Insight Dashboard is the primary screen for accessing the transmitter parameters and
viewing the real-time performance of the VTS transmitter. The Dashboard provides an intuitive
graphical user interface that is easy to understand while providing easy access to the field-
configurable parameters. The diagram below shows the VTS Dashboard followed by brief
descriptions of each on the following pages.

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6.5.2 Airflow Volume Gauge
The Airflow Volume Gauge provides the real-time measurement of the volumetric air flowing
through the AccuStation. The range of this gauge is determined by the size of the station and it
cannot be reset in the field.
6.5.3 Station Airflow Gauge
The Station Airflow Volume Gauge provides the real-time measurement of the volumetric air
flowing through the AccuStation. The range of this gauge can be configured to match the full-
scale range of the Analog Output or it can be configured with a full-scale range that is
independent of the Analog Output. To change the full-scale range, click on the gauge face.
6.5.5 Analog Output Configuration
The VTS’s Analog Output is primarily used to provide an analog signal representing the Airflow
Volume flowing through the station. The signal type and full-scale range of the Analog Output
are user-defined values that are configured by clicking on the boxes adjacent to each heading.
The Analog Output can be configured to Manual Override if desired.
Select Signal Source; Station Airflow or Manual Output
Select Signal Type; 0-20mA, 4-20mA, 0-5V, 1-5V, 0-10V, 2-10V
Enter the Analog Output Full Scale Range
Displays the real time value based on the Full Scale units
Displays the real time analog signal value

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The following examples show the two different options for configuring the Analog Output.
Example 1 shows the Signal Source set to “Station Airflow” which is the most common
configuration. Example 2 shows the Signal Source set to “Manual Output” which is typically
used for troubleshooting wiring issues.
EXAMPLE 1
EXAMPLE 2
Analog Output Signal Source =
Station Airflow
Analog Output Signal Source =
Manual Output
6.5.6 Sensor Frequency Signals
The AccuStation measures airflow using vortex shedders that are incorporated in the
compression zone of each chamber inside the station. Each vortex shedder provides an
independent frequency-based signal that is directly proportional to the air flowing through the
chamber. The graphic below provides an indication of the airflow status in each chamber of the
station. Green indicates there is airflow and red indicates there is no airflow.
Indicates air is flowing through the
side with green sensor, no air is
flowing through the side with red
sensor.
Indicates air is flowing
through both chambers
Indicates no air is flowing
through either chamber

Installation & Operation Manual - Model VTS
Contents of this Manual are Subject to Change Without Notification Page 19
6.5.7 Dashboard Menu
SYSTEM
Load
➢From Transmitter Flash Memory: This will load the contents of the
transmitter nonvolatile FLASH memory into the transmitter RAM memory.
➢From File: This will open a window that will enable you to select a
configuration file from a computer hard drive or other nonvolatile storage
device connected to the computer and load it into the transmitter RAM
memory.
➢Restore Factory Defaults: This will reset the transmitter configuration to the
original settings as shipped from the factory. The current configuration
settings will be replaced.
Save
➢To Transmitter Flash Memory: This will save the contents of the transmitter
RAM memory to the transmitter nonvolatile FLASH memory.
➢To File: This will open a window that will enable you to save the
configuration parameters to the computer hard drive or other nonvolatile
storage device connected to the computer.
Retrieve Generic Configuration Files from the Cloud (Downloaded w/ Insight)
➢If connected to the internet, this command will bring you to the Accutrol
Cloud where configuration files can be retrieved.
Print
➢Parameters Report: Generates a report showing the present configuration
parameters of the transmitter.
➢Balancers Report: Shows the transmitter configuration parameters most
relevant to the Balancer.
Exit
➢Closes the Insight Program

Installation & Operation Manual - Model VTS
Contents of this Manual are Subject to Change Without Notification Page 20
TOOLS
Adjustment
➢Balancer Offset: Provides a simple tool for correlating the transmitter airflow
measurement to a field measurement in one step.
This offset is applied as an Equal % Cal. Adj. which does not overwrite the
factory calibration of the VTS. Using this function is not normally required
with the AccuStation (or advisable) and is only provided as a tool for the
Airflow Balancer to correlate the VTS airflow measurement to a field airflow
measurement. The graph below shows the effect the Equal % Cal Adj. has
over the entire operating range.
-10% Adj.=
-100 CFM change
-10% Adj. =
-40 CFM change
1000
400
800
600
200
0
Caution: The Equal % Cal. Adj. should only be performed if the field
measurement is taken in accordance with ANSI/ASHRAE STD 111 with the
minimum requirements satisfied, otherwise the calibration adjustment
will reduce the accuracy of the VTS Transmitter.
Factory Cal. Airflow Meas. Curve
Airflow Meas. Curve with -10% Cal. Adj.