Omega OM-143 User manual

OM-143
USB RH/Temperature/GPP
Data Logger with LCD Display
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User’s Guide

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.
Servicing North America:
U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047
Stamford, CT 06907-0047 USA
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: [phone] Fax: [phone]
e-mail: [email protected]
For Other Locations Visit omega.com/worldwide
omega.com [email protected]

TABLE OF CONTENTS
Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 –4
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 –5
Safety Instruction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
What’s in the Blister Pack. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 –7
Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 –13
Installing/Replacing the Battery.. . . . . . . . . . . . . 7 –8
Install Software and Drivers. . . . . . . . . . . . . . . . . 8 –9
Configure the Unit . . . . . . . . . . . . . . . . . . . . . . 10 –13
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . 13 –17
Deploy the Unit . . . . . . . . . . . . . . . . . . . . . . . . 13 –14
Stop Logging and Import Logs.. . . . . . . . . . . . 14 –15
Viewing, Printing and Exporting Data Logs.. . . 15 –16
Other Indications.. . . . . . . . . . . . . . . . . . . . . . 16 –17
Specifications.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Maintenance Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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INTRODUCTION
Thank you for purchasing the OM-143 USB RH/Temperature
/GPP Data Logger with LCD Display. Please read this user’s
manual carefully and thoroughly before using the instrument.
The OM-143 is a low-cost, compact, battery-powered thermo-
hygrometer capable of unattended logging (recording) of the
ambient temperature and relative humidity (RH) of an
environment for days, weeks or months. In addition, software
included with the product can also calculate and display
absolute humidity levels in units of grains per pound (GPP) or
g/kg. Also called mixing ratio, GPP is a more useful moisture
metric than RH to water damage remediators. Using RH
alone, a remediator might unknowingly introduce moist air—
with a low RH but a high GPP—during a job’s drying phase.
Data logging can be started or stopped by pushing a button
on the unit, eliminating the need to bring a laptop to the job
site. After a data log has been captured and stored, it can be
uploaded as a .txt file to any PC running the Windows®7 or
Windows®XP operating system after plugging the OM-143 into
one of the computer’s USB ports. The OM-143’s internal flash
memory is large enough to store 16,300 pairs of RH and
temperature readings.
Included with the product—which is slightly larger than a
thumb drive—is a mini-disc with the drivers needed to
interface the unit to the computer, as well as software that
can display a data log file as a table or graph and/or export it
to Microsoft Excel. Exporting to Excel is recommended for
sophisticated trending and analysis of humidity and
temperature data and easy detection of unexpected
excursions.
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Windows®7 and Windows®XP are registered trademarks of Microsoft Corporation.

Applications for the OM-143 include:
• Water damage remediation—Because the OM-143 is
designed to be deployed and left in place over the
durion of the job, it is always in equilibrium with the
environment.
• Process control—The OM-143 enables, simplifies and cuts
the cost of environmental monitoring of office buildings,
greenhouses, food and equipment storage facilities,
wineries, freezers, shipping containers, HVAC/R
installations, computer rooms, labs, libraries, museums
and saunas.
• Electronics manufacturing—Alerts provided by the low-
humidity alarm function of the OM-143 can mitigate the
risk of damaging high-voltage static discharges.
KEY FEATURES
• One button starts/stops data logging without a PC
• Plug-and-play USB 2.0 interface; no need for cables,
cradles or docks
• Large storage capacity: 16,300 pairs of RH and
temperature readings
• 3-1/2-digit LCD displays real-time temperature and
humidity readings; also indicates device working status
and “memory full”
• Included software is used to set: Sampling time from
10 seconds to 12 hours; Hi/Lo alarm setpoints for
humidity and temperature; Temperature unit (°F or °C)
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• Software also calculates and plots GPP and dew point and
wet bulb temperatures and displays data logs as time-
based graphs synchronized to your PC’s clock
• One-click exporting of logs to Excel or Word
• Long battery life (up to one year)
• Includes USB extension cable
• One-year warranty
SAFETY INSTRUCTION
Do not use the OM-143 in the presence of flammable or
explosive gases.
WHAT’S IN THE BLISTER PACK
The OM-143 comes in a blister pack that also contains
• One “1/2 AA” battery. Replacement batteries
(Part No. OM-EL-BATT) are available from Omega
• A disc with software drivers for Windows7 and Windows
XP computers, the ELusb V1.21.3 program for capturing
data logs and displaying them as curves, and a PDF of
this user’s manual
• A USB extension cable
• A hard copy of this user’s manual (inside the fold-over
card)
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A
B
C
D
E
F
Fig. 1a. The components, controls and connector
of the OM-143
PRODUCT OVERVIEW
Fig. 1a below shows the main components, controls and
connectors of the OM-143. Fig. 1b (on the facing page) shows
all possible indications on the OM-143’s display. Familiarize
yourself with their names and functions before moving on to
the Setup Instructions.
A. Temperature and humidity sensor window
B. Battery compartment (latch is on rear of unit)
C. 3-1/2-digit LCD (displays temperature and humidity
readings; also indicates device working status and
“memory full”)
D. USB plug
E. Protective cap
F. MODE button

Display Legend
:indicates reading is higher than high alarm setpoint
for that parameter
▼
▼
:indicates reading is lower than low alarm setpoint
for that parameter
%RH: relative humidity unit
°C: Celsius temperature unit
°F: Fahrenheit temperature unit
[-]188.8: Humidity or temperture value or one of the
following four working status indications
LOG:Unit is logging data
- - -:Unit is in standby mode, ready to log data
FUL: Internal memory is full (and logging has been
stopped)
CON. Unit needs to be configured by software
SETUP INSTRUCTIONS
INSTALLING/REPLACING THE BATTERY
The OM-143 uses a 3.6VDC “1/2 AA” Lithium-ion battery.
To open the battey compartment, use a paper clip or a
screwdriver with a fine point to push in the silver flange
showing through the small square hole in the rear of the unit
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Fig. 1b .
All possible
display
indications
on the OM-143
LATCH

(left photo on previous page). Push back the cover (middle
photo), remove the old battery (right photo) and insert a fresh
battery in the correct orientation. Then replace the cover,
pushing it forward until you feel and hear a click.
After you replace the battery, the LCD will “wake up” and
begin displaying real-time readings. If the MODE button is not
pressed within 60 seconds, the LCD will be automatically
powered off.
Note: If the battery is removed from a unit before it has been
set up from software or while it is recording, the unit must be
reconfigured before it can be reactivated. If it is not
reconfigured, the unit will remain in standby mode.
INSTALL SOFTWARE AND DRIVERS
1. Place mini-disc in tray of CD/DVD drive, shiny side down.
Close tray.
2. When the AutoPlay window appears, click on “Open folder
to view files using Windows Explorer.”
3. Windows Explorer will indicate that there are two “Files
Currently on the Disc”. One is actually a folder containing
a PDF of the OM-143 user’s manual (as well as PDFs of the
manuals for the OM-141 and OM-144—versions of the
OM-143 without an LCD and with an IR thermometer). Copy
the OM-143 manual to your computer’s hard drive for
permanent storage. The other file is a Windows Installer
Package (.msi file) named “ELusb_V1.23.1.msi”. Double-
click its icon.
4. A window titled “Welcome to ELUsb Installation Wizard”
will appear. Click Next to continue.
5. Within the Software License Agreement window that
appears next, click the I agree (T) box.
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6. The next three windows advise that the ELusb application
will be installed in your computer’s C:\Program Files (x86)
folder in a new subfolder named <ELusb>, and that
shortcuts to the program will be created on your desktop
and Quick Launch bar. If you want to install the software
elsewhere, click Browse and choose another location
Within each window, after selecting either the default
location or another location, click Next(N) to continue.
7. When the “Preparing to Install” window detailing the
changes to made appears, click Install (I) to continue.
8. Before the installation begins, a User Account Control
window may appear and ask, “Do you want to allow
[ELusb V1.21.3msi] to make changes to this computer?”
Click Yes to continue.
9. The ELUsb Setup Wizard will now install the program on
your computer. On the next window that appears, click the
Completed (F) box.
10. At the bottom of the Device Driver Installation Wizard that
appears next, click Next to continue.
11. The next window to appear is a Windows Security
window. Click on “Install this driver software anyway”
to continue.
12. The next Device Driver Installation Wizard window will
advise you that an OM-141/143/144 driver from Omega
or Kecheng Laboratories was successfully installed and
that your device is now “Ready to use.” Click Finish to
continue.
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