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QUICK START GUIDE
OM-90 Series
Portable Temperature and Humidity Data
Loggers
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Table of Contents
1. Description ............................................................................................................................................................................. 3
2. Battery Installation .............................................................................................................................................................. 3
3. Connecting to a Data Logger .......................................................................................................................................... 4
4. Configuring a Data Logger ............................................................................................................................................... 5
5. Retrieving Data .....................................................................................................................................................................7
6. More Advanced Topics ....................................................................................................................................................... 7
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1. Description
The OM-90 Series are portable, battery operated, temperature and humidity data
loggers able to store 65,520 samples of both temperature and humidity along with a
time stamp. The data logger runs off of a CR2032 coin cell battery that provides a
2-year battery life while logging.
This Quick Reference Guide gets you started with the logger with the most basic
functions to have you up and running with your logger in a matter of minutes.
2. Battery Installation
The data logger runs from a standard CR2032 battery. There are different manufacturers. You can nd it easily
on the web. The key thing is to choose a CR2032 battery with high capacity since this will translate into a longer
logger battery life.
First remove the data logger cover by unscrewing the two fastener screws (#1 Philips) at the rear of the logger.
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Then remove the circuit board from the box (use soft tool or ngernail to remove)
Insert a new battery as shown being careful not to touch and exposed electronics in the process.
Finally re-attach the cover and tighten the fastener screws again (be careful not to over tighten).
3. Connecting to a Data Logger
To congure or retrieve data from a logger you will need a Windows PC running Windows XP, Windows Vista,
Windows 7 or Windows 8. Connect the data logger to your PC using a USB-C cable. Any USB port on the PC can
be used.
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4. Configuring a Data Logger
Installation of the Omega OM-90 Series Data Logger Software is very simple. The data logger needs no special
drivers since it is a USB HID device and such devices can make use of the standard drivers that come with
Windows.
In the Windows Start Menu launch the Omega PC Application.
The front page of the GUI is an overview of the logger. Press the Conguration button to get to the next page.
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Connect the logger and you will see the connected indication changes to blue.
Next ll out the conguration settings. For example:
• °C or °F
• logging start to “On Disconnection”
• logging interval to say 10 seconds
• temperature alarm enabled and thresholds set
• humidity alarms enabled and thresholds set
Press the “Congure Button” so that the settings are updated in your logger. Please wait until the software has
nished updating the logger.
Disconnect the logger. You should see that logging will start automatically indicated by a 1 second green light.
The green light will then ash every 6 seconds to indicate that the unit is logging. The red light will ash also in
the case that the temperature or humidity goes outside of the allowed limits and triggers the alarms.
If the logger becomes full then all lights will stop ashing.
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5. Retrieving Data
Connect your data logger. The logger red light will illuminate for 1 second indicating logging is stopping.
Start the OM-90 Series Data Logger Software and navigate to the Conguration page.
Press “Read Logger Conguration/Data” to retrieve the conguration and data from the connected logger.
Wait until all information is retrieved from the logger.
The graph and spread sheet will be lled with the logged data.
Zooming in and out of the graphs can be achieved by the following controls:
• to Zoom In - drag the left mouse button
• to Zoom Out - click the right mouse button
• when zoomed in you can move around using the keyboard arrows or the mouse scroll wheel
To write data and conguration to le, press the save icon.
6. More Advanced Topics
This document has shown the most basic way to congure the data logger in order for you to get started very
quickly.
There are for example other logger start modes such as button press, start at a dened time and real time
logging. For a more exhaustive description of all features of the logger then please consult the full OM-90 Series
User Guide. The software is available on the OM-90 web page for download.
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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 WARRANTY RETURNS, please have the
following information available BEFORE contacting
OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
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 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.
FOR NON-WARRANTY REPAIRS,
consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product, and
3. Repair instructions and/or specific problems
relative to the product.
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