OM-CP-RF Series Operations Manual
Omega Engineering, Inc.
Revised 04/07/05
Page 16 of 18
Custom Interval
Enabled Disabled Disabled
Sampling Option
Not Significant
Not Applicable
Not Applicable
Indicator Mode
10 seconds
10 seconds
Reading only
Even longer battery life can be achieved by disabling the wireless output in favor of
serial-only or no transmission. Battery life is not calculated for these unusual cases.
OPERATING ENVIRONMENT
The OM-CP-RF series data loggers are rated for –30 to +70 °C and up to 95 %RH (non-
condensing). Although the devices are fully functional over this range, the strength of the
wireless output signal may vary with changes in environment. In particular, the signal
strength may be reduced at the temperature extremes, in high humidity, or if humidity
condenses inside the device.
SYSTEM PERFORMANCE AND RELIABILITY
To achieve maximum distance for the wireless transmission, there are a number of
guidelines that should be followed. Consider these points when setting up the system:
Transmitter location
– Keep the transmitter as close to the receiver as possible. If
either the transmitter or receiver must be in an enclosed area, keep the other inside the
same area. This is especially important if there would be metal walls, conduit, or wires
between the units. In particular, attempting to transmit from inside of a freezer or
refrigerator is not likely to be successful.
Line of sight
– Try to keep the transmitting and receiving antennas along a direct line
of sight from one to the other. Keep the number of corners or obstacles in between them to
a minimum.
Nearby objects
– Try to keep the transmitting and receiving antennas away from any
foreign objects, especially those made of metal. Performance may be improved by moving
the antenna away from the ground, ceiling, or nearby objects.
Antenna orientation
– Keeping the transmitting and receiving antennae parallel with
one another may improve performance.
Minimize interference
– Keep external sources of radio frequency noise to a minimum.
Locate the antenna and receiver as far from any other electrical or wireless devices as
possible. If multiple transmitters are being used, set up the system to minimize interference
between transmitters.
Summary of Contents for OM-CP-RF Series
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