Accutron SP Ultra User manual

SP Ultra
Technical Operations Manual
Visit www.accutroninstruments.com
Email [email protected]
Phone [phone]
REV 1.0.0
For SP Ultra Ultrasonic
Air velocity Sensor

2
Important Notice
The InfoScript line of products is the exclusive copyright property of Accutron Instruments INC.
We reserve the right to make changes to the Accutron products and manuals without further notice to
improve reliability, function or design. Accutron Instruments INC does not assume any liability arising
out of the application or use of any product described herein, nor does it convey any license under its
patent rights, nor the rights of others.
The documentation found within this manual is to provide users of our products with technical
information pertaining to the installation, maintenance and setup of the product.
It is forbidden to use any Accutron documentation for any other purpose which may be detrimental to
the interests of Accutron Instruments INC.
PLEASE NOTE: The newest revision of this manual will be available online at accutroninstruments.com. If
you require any assistance in configuring your new Accutron SP Ultra, please call our technicians at +1-
705-628-0814 or email at [e-mail].

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The Manual
Refer to this manual for proper installation, operation, setup and maintenance of the Accutron SP Ultra.
Special attention must be followed to warnings and notices highlighted from the rest of the text to
ensure it will stand out.
Warning: Failure to oblige with the necessary precautions can result in death, serious injury, and/or
considerable damage to the product.
Note: Important information about the product or that part of the manual, helpful hints, and or
troubleshooting advice.
•These instructions do not claim to cover all details or variations in equipment, or to provide for
every possible contingency that may arise during installation, operation, setup and
maintenance.
•For further information or to resolve issues not covered in the manual, consult the Accutron
Technical Service Team.
•The contents of the manual shall not become part of or modify any prior or existing agreement,
commitment or relationship.
•The warranty contained in the contract between parties is the sole warranty of Accutron
Instruments INC.
IMPORTANT: All specifications are subject to change without notice. Ensure your manual is up to date,
the version number can be found on the front page of the manual. If you are unsure please consult the
Accutron Technical Service Team.

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Introduction
Thank you for choosing Accutron Instruments for your monitoring needs. This manual will review the
setup and operating procedures of your SP Ultra air velocity sensor.
The SP Ultra is a single point directional airflow velocity sensor. It measures the instantaneous air
velocity as well as direction of airflow with respect to the SP Ultra. The device communicates over
Modbus RTU. The device may also be configured with a cross-sectional area to provide calculated
airflow volume measurements.
If you have any suggestions on improvements of this product, please share it with us. We value your
input. This product was designed to be user friendly, and we are actively looking on how we can improve
our products to satisfy our customers.

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Section 1: General Information
1.1 Safety Guidelines
This device should only be set up and operated in conjunction with this manual. Qualified personnel are
only authorized to install and operate this equipment in accordance with established safety practices
and standards.
1.2 Information about your Accutron SP Ultra
When you first receive your Accutron SP Ultra, ensure you record the following information shown
below. If you need to contact Customer Service, this information will allow us to provide you more
efficient service. This information is located on the label on the side of your SP Ultra.
TABLE 1: ACCUTRON SP ULTRA INFORMATION
Accutron SP Ultra
Part Number:
Serial Number:

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Section 2: Specifications
Input Power: 12 to 24 VDC
Interfaces: Modbus RTU, RS485
Enclosure: Nema 4X , IP65, ABS
Communication Defaults:
Modbus Address: 192
Baud Rate:9600
Parity: None
Stop Bits: None
Temperature Range: -40˚C to + 60˚C
Wiring:
Red: V+
Black: Ground
Yellow: Data A
Green: Data B
Units:
Velocity: m/s, ft/s, ft/min
Volume: m3/s, CFM, KCFM
Measurement Range
Accuracy
Resolution
Wind Speed
0-40 m/s
+/- 3% (@25 °C)
0.01 m/s
Wind Direction
0-359°
+/- 3% (@25 °C)
1°

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Section 3: Device Overview

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Section 4: Device Summary
Once powered up, the Accutron SP Ultra will begin reading airflow and communicating via Modbus. To
test system activity, the Heartbeat register can be polled. This is a constantly increasing value that
should change approximatly every second.
The system monitors airflow velocity and direction. The Direct airflow register outputs the absolute air
velocity independantly from direction (shown with orange arrow in below image). The linear airflow
velocity registers output the normalized air velocity recorded in the direction of the SP Ultra (green
arrow). The direction of the instrument is indicated by the blue arrow at the top of the unit. When
installing the SP Ultra, make sure the arrow is pointed into the intended direction of the airflow stream
for best results.
Airflow angle outputs the direction of the airflow with respect to the SP Ultra, and is reported in
degrees. It is measured clockwise from the forward facing direction of the unit (shown with black arrow
in below image). If the unit is exposed to a head wind, with the airflow coming directly at the front of
the unit, it will report a direction of 0 degrees. With the airflow coming from the back of the unit, a
direction of 180 degrees will be reported.
Device user settings are configured over Modbus. Refer to the ‘User Settings – holding registers’ in the
Modbus Registers map for user configurable parameters.

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Section 5: Modbus Registers
Address
Variable
Units
Description
16 Bit Int registers
40000
Airflow Angle
°
actual value from single point
40001
Direct airflow velocity x100
m/s
actual value from single point
40002
Linear airflow velocity x100
m/s
calculated from angle: airflow*cos(angle)
40003
Linear airflow velocity x100
ft/s
calculated from angle
40004
Linear airflow velocity x1
ft/min
calculated from angle
40005
Linear airflow volume x100
m3/s
calculated from angle:
(airflow*cos(angle))*area
40006
Linear airflow volume x1
CFM
calculated from angle
40007
Linear airflow volume x100
KCFM
calculated from angle
40008
Heartbeat register
Counter increases by 1 approx. every second
32 Bit float registers
40010
Airflow Angle
°
actual value from single point
40012
Direct airflow velocity raw
m/s
actual value from single point
40014
Linear airflow velocity
m/s
calculated
40016
Linear airflow velocity
ft/s
calculated
40018
Linear airflow velocity
ft/min
calculated
40020
Linear airflow volume
m3/s
calculated
40022
Linear airflow volume
CFM
calculated
40024
Linear airflow volume
KCFM
calculated
User Settings - holding registers (16bit ints)
40100
K factor (x100)
40101
area in meters (x100)
40102
Modbus Address
1 to 255
default 192
40103
Baud Rate
0 = 4800
default 9600
1 = 9600
2 = 19200
3 = 115200
40104
Parity
0 = none
default none
1 = odd
2 = even
40105
stop bits
0 = 1 stop bit
default one
1 = 2 stop bit

Visit www.accutroninstruments.com
Email [email protected]
Phone [phone]
REV 1.0.0
For SP Ultra Ultrasonic
Air velocity Sensor