Omega Engineering OM-51 User Manual

WA R R A N TY / D I S C L A I M E R
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of
13 months f rom date of purchase. OMEGA's Wa rranty adds an additional one (1) month grace period to the n o r-
mal one (1) year product warr a n t y 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 re t u rned 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 re p a i red or replaced at no charge. OMEGA's WARRANTY does not apply to defects re s u l t i n g
f rom any action of the purc h a s e r, including but not limited to mishandling, improper interfacing, operation outside of design
limits, improper re p a i r, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having b e e n
t a m p e red 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 contro l .
Components which wear are not warranted, including but 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
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defe cts. OM EGA MAK ES NO OTH ER WARR AN TIES OR RE PRESEN TAT IONS OF AN Y K IND
W H ATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WA R R A N T I E S
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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,
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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
D i rect 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 registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2001 OMEGA ENGINEERING, INC. All rights re s e rved. This document may not be copied, photocopied, re p roduced, 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.
D-5385-B M3615/1100
User' s Guide
Shop online at
www.omega.com
e-mail: info@omega.com
O M - 5 1
State Data logger
The OM-51 State data logger requires
Logger Software for Windows and PC
interface cable for operation.
Introduction
Thank you for buying the OM-51 State
data logger. With proper care it will give
you years of reliable readings. The OM-51
State data logger has two inputs, a magnet-
ic reed switch located in the middle of the
hinge of the case (opposite the connectors),
and an external contact closure input. The
logger will indicate a closed state if either a
magnet is present, or the external contact is
closed.
A different kind of logger
Other loggers record measurements with
their sensors at regular preset intervals.
These loggers record the time evolution of
a physical property (temperature, RH, etc.).
Usually the physical property has a long
time-constant associated with it (water and
air temperatures usually change slowly), so
measuring at an interval that is shorter
than this time-constant will give a realistic
representation of what has happened. The
OM-51 State does not have a preset inter-
val. It will always be monitoring and will
only record when a change of state occurs.
Inside this package:
OM-51 is shipped with:
1. OM-51 State data logger
2. Contact closure cable
3. Magnet
4. Mounting Accessories:
Magnet
Hook and loop tape
Double-sided tape
5. This User's Manual
Mounting options
Included with your OM-51 data logger are
three options for mounting it on location: a
magnet, hook and loop tape, and double-sided
tape. These can be stuck on the back of your
data logger. When using the magnet, note that
it works best on flat surfaces.
OM-51 State data loggers in detail
OM-51 State data loggers work well when
there are only two values to measure (i.e.
open or closed; on or off). The OM-51 State
data logger records the time at which a state
change occurs (with a resolution of half a
second), and records nothing between these
changes. If you wanted to do this with a
logger that uses preset intervals, you would
have to set it to 1/2 second intervals, and an
8K logger would run out of memory in about
an hour. The OM-51 State data logger checks
for the contact closure every half of a second,
and can record 2000 state changes. Its time
out in the field is limited by the battery (about
one year).
No data is information, too
The OM-51 State logger records the initial
state and a final state at readout, even if the
state has not changed. This allows you to
determine the entire period during which the
OM-51 State was watching for state changes.