Omega | HHF141A | Owner Manual | Omega HHF141A Owner Manual

Omega HHF141A Owner Manual
TM
User’s Guide
Shop online at
omega.com
e-mail: info@omega.com
For latest product manuals:
www.omegamanual.info
HHF141
Handheld Rotating Vane Anemometer
omega.com info@omega.com
U.S.A.
Headquarters:
Servicing North America:
Omega Engineering, Inc.
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: (203) 359-1660
Fax: (203) 359-7700
e-mail: info@omega.com
For Other Locations Visit omega.com/worldwide
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.
INTRODUCTION
Omega's Model HHF141 digital anemometer is a versatile instrument for
measuring air velocity in various applications such as HVAC, aerospace
development, industrial process airflow, and fluids research.
The rugged yet precise probes can be used for airstreams that have a wide range
of humidity, temperature and contaminants without compromising accuracy.
Features include choice of probe diameters, custom cable lengths, service
temperatures up to 212·F (loo·c) at the probe, high reliability, and long life.
Rev 1.9, 1 0-Jun-200B
Page 2 of24
SECTION 1 - SPECIFICATIONS
Ranges:
2.75 inch Air Probe: 40 to 7800 ft/min (feet per minute)
0.2 to 40.00 rn/sec (meters per second)
1 inch Air Probe:
60 to 6800 ft/min
0.3 to 35.00 rn/sec
Accuracy:
±1.0% ofreading ±1 digit
Resolution:
1 ft/min or 0.01 rn/sec
Operating Temperature:
Instrument:
Probes:
32· to 125 F (O to 50 C')
-4· to 212"F (-20· to 100.C)
Power Supply:
3 AA alkaline batteries
Battery Life:
Approx. 150 hours, without backlight
Battery check:
Automatic low battery display
Display:
0.5'' LCD, 4 digits, with LED backlight
°
°
°
Rev 1.9, 10-Jun-2008
Page 3 of 24
Options Available:
•
•
•
•
•
•
•
Protective Boot and Splash-Proof Seal for the Instrument
USB Communications
RS232 Communications
Analog 0-5 Volt Output
Additional Probes, 2.75 inch diameter or 1 inch diameter
Extra extension and/or flexible rods
Custom cable lengths
Included:
•
•
•
•
•
•
•
•
(1) HHF141 Instrument
(1) Vane-type probe head, choice of 2. 7 5 inch diameter or 1 inch
diameter
(3) Rigid extension rods with handle grip
(1) Flexible extension rod
(1) Probe connection cable, 5 ft.
(3) Size AA 1.5V alkaline batteries
( l) Hard-shell carrying case with foam liner
(1) Operation Manual
Dimensions
INSTRUMENT
6.26 inch
1.32 inch
34mm
160mm
3.071nch
78mm
D
DD
D
DD
D
--j
Ri�v 1.9, 1 0-Jun-2008
Page 4 of 24
J:.75 INCH PROBE
MOUNTING BOSS WITH
3/8-16 UNC TAPPED HOLE
.750 INCH DEEP-�
02.75 INCH
70MM
ELECTRICAL
CONNECTOR�,
.875 INCH-
22MM
..
�-__,,_----�
-+-
----,
•'\
- 1.7±.0l0INCH
43MM
..________ 4.9 INCH __________.
124MM
1 INCH PROBE
________ s.s inches
140mm
---------
Rev 1.9, 10-Jun-2008
Page 5 of 24
If-
f�g
.. ·•.·.
Pressing the ON/OFF key switches the instrument ON. Hold down
the key for 2 seconds to switch the unit OFF. The unit will
' :.. 'i . automatically power off after 30 minutes without any key presses. To
disable auto power-off, hold down the power button during turn-on. The unit
will flash AOFF, which means that the auto power-off has been disabled. The
auto power-off is re-enabled each time the instrument is turned on.
r1:1
Press the BACKLIGHT key to turn the LCD backlight on for 30
• '.: / seconds. To tum the backlight on permanently, hold the backlight key
down for 3 seconds. The LCD will flash. The backlight is now switched on
permanently. To switch the backlight off, press the backlight key again.
Press the FPM/MPS key to switch the measurement units from FPM
(feet per minute, 1 FPM resolution) to MPS (meters per second, 0.01
MPS resolution).
Rev 1.9, 10-Jun-2008
Page 6 of24
� Press the SAMPLE RATE key to change the measurement averaging
rate ("sample rate") of the unit:
�.
25EC
An average value of airspeed measurements during the
preceding 2 seconds is displayed.
YSEC
An average value of airspeed measurements during the
preceding 4 seconds is displayed.
BSEC
An average value of airspeed measurements during the
preceding 8 seconds is displayed.
16 5
An average value of airspeed measurements during the
preceding 16 seconds is displayed.
• Press the MAX/MIN key to record and display the maximum airspeed
reading. The maximum airspeed reading display will alternate with the
letter "H" displayed with the sample rate. Press the MAX/MIN key
again to record and hold the minimum airspeed reading. The minimum airspeed
reading display will alternate with the letter "L" displayed with the sample rate.
For example:
1065 alternating with H B signifies that 1065 is the highest airspeed
reading since the MAX/MIN key was pressed, and the sample rate is set to 8
seconds.
82 alternating with L 16 signifies that 82 is the lowest airspeed
reading since the MAX/MIN key was pressed, and the sample rate is set to 16
seconds.
To exit MAX/MIN mode, press the SAMPLE RATE key.
Rev 1.9, 10-Jun-2008
Page 7 of24
�· Press the HOLD/RESET key to freeze the current reading on the
display. HOLD is displayed on the LCD and the reading is held.
�J
Press the HOLD/RESET key a second time to clear this mode and return the unit
to normal operation.
Press the HOLD/RESET key while in MIN/MAX mode to display BOTH the
minimum and maximum airspeed reading since the MAX/MIN key was pressed.
Once the HOLD/RESET key is pressed while in MAX/MIN mode, new airspeed
readings are no longer recorded. To return to MAX/MIN mode, press the
HOLD/RESET key again.
APPENDIX A - LCD DISPLAY SYMBOLS
LCD DISPLAY
LOW
BATTERY
01SPLAY
HOLD
METERS PER SECON
SYMBOL (mis)
Reiv 1.9, 10-Jun-2008
Page 8 of24
APPENDIX B - BATTERY REPLACEMENT
"----REPLACE THREE (3) SIZE AA BAITTRIES AS SHOWN
Rev 1.9, 10-Jun-2008
Page 9 of24
APPENDIX C - AIRFLOW VOLUME CALCULATIONS
To calculate cubic feet per minute (CFM) from a measured air velocity (FPM),
you need the calculated cross-sectional area of the air flow stream:
Volume Flow (CFM) = Velocity (FPM) X Area (sq ft).
In a rectangular duct this cross sectional area equals the Width times the Height.
T
H
J_
-14-W�
W x H=A (cross-sectional area)
In a circular duct this cross section area equals the radius squared times 1t (3.14).
Rx Rx 3.14=A (cross-sectional area)
To convert an area calculated in square inches to an area calculated in square
feet (which is required for the Volume Flow equation above) divide by 144:
(area in sq in.)/144 = (area in sq ft.).
Example:
The air duct is rectangular, the width is 24 in. and the height is
12 in. The air velocity reading through the duct is 450 FPM.
Calculate the Volume Flow.
Step 1: Cross-sectional area= 24 in. x 12 in. = 288 sq in.
Step 2: 288 sq in /144 = 2 sq ft.
Step 3: Volume flow= Air Velocity x Area, therefore,
Volume flow rate = 450 FPM x 2 sq ft. = 900 CFM.
Bev 1.9, 1 0-Jun-2008
Page 10 of 24
APPENDIX D - ANALOG OUTPUTS (IF EQUIPPED)
If the instrument is equipped with the analog output option, there will be a five­
pin connector on the bottom of the instrument. Also, an analog output cable will
be included with the instrument. This cable will have a five-pin connector on
one end and four tinned wires on the other end.
The instrument will output a Voltage between O and 5 Volts that corresponds to
the Air Velocity measured by the instrument. The output range, pin
assignments, and wire colors are given in the table below. Also shown is a
block diagram of the analog output circuit.
Corresponding
Analog Output
Wire
Color
Pin#
Function
Measurement
Equation* to convert from
Volts (V) to Measurement Value
HLK
'iIBT
4
*To convert from Volts to Air Velocity in Feet per Minute, multiply by 2000.
► For example, an analog output of 2.375 Volts means that the instrument is
measuring an air velocity of 4750 feet per minute (FPM).
► 2.375 Volts x 2000 = 4750 FPM
Note: When using analog outputs, there is an additional ±1 11'0 error in the
analog output voltage. This is in addition to the normal measurement error.
► For example, an air velocity reading of 500 FPM would normally have an
accuracy of ±1% of reading ±1 digit (±6 FPM) when the data is viewed
on the LCD display.
► With the additional error associated with the analog output voltage, the
effective accuracy of the analog output for this air velocity measurement
will be ±2% of reading ±1 digit (±11 FPM).
Custom Analog Voltage Outputs are also available - contact Omega for details.
Rev 1.9, 1 0-Jun-2008
Page 11 of24
Analog Output circuit block diagram and connector pin assignment
ANALOG OUTPUT CONNECTOR
PINOUT DIAGRAM
Mating Cable Connector:
Binder Part No. 99-0413-00-05
Rev 1.9, 10-Jun-2008
Page 12 of24
APPENDIX E - USB DATA OUTPUT (IF EQUIPPED)
If the instrument is equipped with the USB Communications option, there
will be a four pin male connector on the bottom of the instrument. Also, a
USB cable will be included with the instrument. This cablei will have a
four pin female connector on one end and a USS Type-A connector on
the other end.
USB Data Output - Instructions for Use
STEP 1: Install a Virtual COM Port (VCP) Driver on your computer.
Free VCP drivers can be downloaded for Windows, Linux, and
MAC from FTDI Ltd on their website:
http://www.ftdichip.com/Drivers/VCP .htm
We recommend downloading the setup executable, which
automatically runs and configures the drivers for you.
STEP 2: Connect the USB cable (included) to the male connector on
the bottom of your instrument. Connect the other end to a
USS port on your computer.
STEP 3: Turn the Instrument ON.
STEP 4: Verify that the Instrument has been set up as a USB Serial
Port with a unique COM port number. (You only need to do
this once)
For Windows users, open the Windows Device Manager
(found in Control Panel) and verify that a USS serial port exists
as shown below.
Rev 1.9, 10-Jun-2008
Page 13 of24
+- .... l ■ tc1e1111ia1•••
B
PIUDElAPTOP
1±1 .. Bat1eries
1±1 ' Con1,uter
1±1 '- Oilk
cmes
l±l · ' Display�
1±1 � DVO,tl>,ROM aMS
1±1 § Flai,py dsk contrclers
1±1 § !DE ATA/AT/lPI con1rolers
1±1 • IEEE 1394 Bus host con1rclers
1±1 -- K<!yt,o.ds
1±1 ""..) Mee and other poinlin!I devices
l±l·�Modems
1±1
Mentors
1±1 • Network adapters
1±1
POlCIA adapters
Ei
Por1s (COM & I.PT)
:/. Comnu-ocallons Port (COMl)
Ea' Pm11!< Port �I)
!
J
3_
i±i • Processors
l±l - Soo.nd, vid,,o and game con1rclers
You are now ready to capture the data being measured by
your instrument.
Please refer to Appendix G - Viewing and Capturing Data
for further instructions.
Hev 1 .9, 10-Jun-2008
Page 14 of24
APPENDIX F - RS232 COMMUNICATIONS (IF EQUIPPED)
If the instrument is equipped with the RS232 Communications option,
there will be a three pin male connector on the bottom of the instrument.
Also, an RS232 cable will be included with the instrument. This cable
will have a three pin female connector on one end and a 0B9 Female
connector on the other end.
RS232 Data Output - Instructions for Use
STEP 1: Connect the RS232 cable (included) to the female connector
on the bottom of your instrument. Connect the other end to an
RS232 port on your computer.
STEP 3: Turn the Instrument ON.
STEP 4: Verify that the Instrument has been set up as a RS232 Serial
Port with a unique COM port number. (You only need to do
this once). For Windows users, open the Windows Device
Manager (found in Control Panel) and verify that a serial port
exists.
You are now ready to capture the data being measured by
your instrument.
Please refer to Appendix G - Viewing and Capturing Data
for further instructions.
Rev 1.9, 1 0-Jun-2008
Page 15 of24
APPENDIX G- VIEWING AND CAPTURING DATA
(IF EQUIPPED WITH EITHER USB OR RS232 OUTPUTS)
There are many ways to capture the serial port data from the Instrument.
The simplest method is to use a terminal emulator program.
Using a terminal emulator allows the serial COM port to be opened, with
the above port settings, and real-time data to be viewed from the
instrument. One such terminal emulator program is Windows
HyperTerminal.
To launch Windows HyperTerminal, go to:
START----+ All Programs----+ Accessories----+ Communications----+
HyperTerminal
Enter a name for the Connection, such as "Anemometer" and choose an
icon.
_?- XJ
Connection Descnpt1on
NewConneCIOII
Enter a name and choose an icon for tie conneclion:
Name:
!Anemometer
Icon:
OK
jI
Cancel
Click OK.
Hev 1.9, 1 0-Jun-2008
Page 16 of24
On the next window, next to "Connect using," select the COM port you
that you are using with your instrument. Click OK.
,=1rx
Connect To
JI
Anemometer
Enter delails for the phone numberlhal you want to diat
COUMY/region:
�--J
Area code:
Phone number.
t.
Connect using:
..___OK �
--1
I
Cancel
In the next window, select the port settings as shown below and click
OK. (The Serial Port settings are also listed at the end of this section).
?�
COM3 Propert1e:-.
PooSellings
L_________ ___ _________
Bits per second �- - �--���� -Oatabits· [�-- - - -- __
Parity
_____!'�
[None____ _ ··- ...... �
S10pbils:
OK
Cancel
11
Apply
Rev 1..9, 10-Jun-2008
Page 17 of 24
Click on File---+ Properties. You will see the window shown below. Click
on the Settings tab and then click on ASCII Setup... as shown below.
Funaon. 81'1'0W. and cirl keys act as
0 Windows keys
@ r.-a1 key.
Backspace key send9
@ Ctl+H
Q Doi
O Cil-H. Spao. COl+H
[AulodelKt --------·---__ -711
T--.ill:
T.-.r11N1a!-Setup
I�ANS_I__
___I
s..-011,...,.,.s: 15oo---------- ]ii
0 Ploy 10Ulldwhen connocting or dilconnedng
OK
II
I
c-el
Make sure that "Append line feeds to incoming line ends" is CHECKED
as shown below. Click OK.
? )(,
ASCH Setup
ASC11Sendlng
D SetlC!line anc1o•1ineD Echotyped�localy
l.iledelay:
E=:J­
E:::J -
Chaladefdelay:
@W,aplines---.llomlinalOK
�
I
cancel
You will now receive data from your instrument.
Rev 1.9, 10-Jun-2008
Page 18 of24
Serial Port Settings
Bits per Second (Baud) 9600
Data bit
8
None
Parity
Stop bits
1
None
Flow Control
Serial Port Protocol
One Second
Data Output Interval
Comma-Separated Values (CSV)
Data Format
Same as Units shown on LCD Display
Measurement Units
Below are examples of the formatted output data for Omega's HHF141HHF144 Series Instruments (units may be different depending on the
units selected on the LCD display):
Model HHF141:
Air,47,FPM <CR>
Model HHF142 displaying in Air Velocity Mode:
Model HHF142 displaying in Volume Flow Mode:
Air,47,FPM <CR>
Air,251,CFM <CR>
Model HHF143:
Air,47,FPM,Temp,56.7,C <CR>
Model HHF144:
Air,47,FPM,Temp,56.7,C,RH,40.5,% <CR>
Rev 1.9, 10-Jun-2008
Page 19 of24
Exporting and Graphing Data
Exporting serial port instrument data from the Instrument to a
spreadsheet application such as Microsoft Excel or OpenOffice Cale
allows the data to graphed or recorded.
The simplest way to export the instrument data is to use a terminal
emulator program, like Windows HyperTerminal, and either capture the
serial data/text to a file (menu selection) or to manually highlight, copy,
and then paste the instrument data into an editor such as Windows
Notepad.
Once you have the instrument data in a file, save the file as a .CSV type
( e.g., lnstrumentData.csv).
Open the file in a spreadsheet application such as Microsoft Excel or
OpenOffice Cale. A graph of the data as shown below can now be
generated.
0.FPM
7i:fPti
. 1'fFPM
165.FP�f
. 1.41�FPM
129:fpM
. hsFPM
1Cfi;FPM
9HPM
90:FPM
. B4'FPM.
77'.FPM
74FPM
7i'FPM
65:FPM
il2'rl'M·
!i!l'FPM
SS'FPM.
52,FPM
A9FPM
�·FPM
•3f'PM
OFPM
HPM
AkV......
""
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14()
""
,.,
"'
"'
"'
"'
1
2
,
4
s
&
7
a
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10 11 t2 13 14 1i $ 17 � � � � D n �
Rev 1.9, 10-Jun-2008
Page 20 of24
CALIBRATION
To maintain your instrument in top working order, we recommend
that you send it back to Omega for calibration each year, beginning
one year after purchase.
Our calibration services include ensuring the instrument performs
within its accuracy tolerance, making any necessary adjustments,
and inspecting all aspects of the instrument's functionality so that
you'll have another year of dependable service. Calibration also
includes a complimentary firmware upgrade so that you know
you'll have the latest advances in accuracy and reliability in your
instrument.
NIST-Traceable multi-point calibration is also available from the
factory. We can offer precise calibration tailored to your specific
measurement needs using our state-of-the-art facilities and
calibration equipment.
Please contact us or visit our website for the latest information on
calibrating your instrument.
Rev 1.9, 1 0-Jun-2008
Page 21 of24
Notes:
Rev 1.9, 10-Jun-2008
Page 22 of24
www.omega.com
info@omega.com
Notes:
HHF141 User Manual
Copyright© 2008, Omega Engineering
Rev 1.9, 10-Jun-2008
Page 23 of24
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace
period to the normal one (1) year product warranty to cover handling and shipping time. This ensures
that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
FOR NON-WARRANTY REPAIRS, consult
FOR WARRANTY RETURNS, please have the
OMEGA for current repair charges. Have
following information available BEFORE contacting
the following information available BEFORE
OMEGA:
contacting OMEGA:
1.Purchase Order number under which the product
1. Purchase Order number to cover the COST
was PURCHASED,
of the repair,
2.Model and serial number of the product under
2. Model and serial number of the product, and
warranty, and
3. Repair instructions and/or specific problems
3. Repair instructions and/or specific problems
relative to the product.
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.
OMEGA is a trademark of OMEGA ENGINEERING, INC.
© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
written consent of OMEGA ENGINEERING, INC.
Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
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