CO71A
Carbon
Monoxide Detector
INSTRUCTION MANUAL
Introduction
The CO71A is used to monitor Carbon Monoxide
(CO) levels in commercial and residential living
spaces, warehouse operations, combustion engine
repair facilities, public facilities and any other
indoor areas where people may work or live. The
full-featured, compact design of the CO71A allows
for easy use in most any working environment.
Features include
• One button ON with Auto Zero
• Measures from 0 to 999 PPM CO
• Captures maximum value
• Preset alarms
• Visual three color LED
• Audible tone
• Data Hold
• Back lit display
• Low battery indication
• 5 year expected sensor life (3 year warranty)
WARNING!
This instrument should only be used by trained and
competent persons, after due considerations of any
risks involved.
Carbon Monoxide is life threatening even at
relatively low concentrations. Be sure you understand the
risks before investigating potential leaks.
Instructions
ON/OFF ( button)
The CO71A is operated by a single button for ON and OFF.
It is designed for use in ambient air, ranging in temperature
from 32 to 104°F (0 to 40°C). When the unit is switched
ON (Only switch ON outdoors or where no CO is present)
it automatically zeros in 50 seconds. During countdown the
display shows time remaining as two digits.
Turn ON countdown
When the countdown reaches 00 the meter will set its
sensor to zero and display CO concentration using
three digits.
Normal display
CO PPM
Hold down the ON/OFF key to switch the meter OFF,
the display will show a single digit and count down for
9 seconds.
Turn OFF countdown
If turned off accidentally, press the button again to cancel.
Note:
The meter will not automatically shut off. This is to
avoid interruption during a test. To conserve battery life,
be sure to turn off your CO71A when not in use.
MAX button
Maximum value display
Press MAX to display the highest reading detected while
the meter is switched ON.
HOLD button
Holds value when button is pressed
Freezes the display with the CO reading at the time
the HOLD button is pressed. Press again to display
current value.
Visual Indicator
The LED on the top of the CO71A lights and changes
color when CO levels increase or decrease.
OFF:
0-1 PPM
GREEN:
2-9
PPM
AMBER:
10-34
PPM
RED:
35
PPM
or higher
These values are based on environmental and health
standards as listed in table 1.
Checking For CO
• Zero unit in fresh air
• Carry the meter to area to be tested
• View results on display
Note:
Ensure that the sensor grille at the rear of
the instrument is free from obstruction. A quick
instrument check can be performed by smoke
from a blown out match. Let smoke enter the
sensor grille. This will cause the indicated CO level
to increase.
The CO71A is designed for ambient testing only. DO
NOT place the instrument in flue gas or warm air
streams.
CO71A
Carbon Monoxide Detector
Limited Warranty
The CO71A is warranted to be free from defects in
materials and workmanship for a period of three years
from the date of purchase. If within the warranty period
your instrument should become inoperative from such
defects, the unit will be repaired or replaced at UEi’s
option. This warranty covers normal use and does not
cover damage which occurs in shipment or failure which
results from alteration, tampering, accident, misuse,
abuse, neglect or improper maintenance. Batteries and
consequential damage resulting from failed batteries are
not covered by warranty.
Any implied warranties, including but not limited to
implied warranties of merchantability and fitness for
a particular purpose, are limited to the express warranty.
UEi shall not be liable for loss of use of the instrument
or other incidental or consequential damages, expenses,
or economic loss, or for any claim or claims for such
damage, expenses or economic loss. A purchase receipt
or other proof of original purchase date will be required
before warranty repairs will be rendered. Instruments out
of warranty will be repaired (when repairable) for a service
charge.
For more information on warranty and service, contact:
This warranty gives you specific legal rights. You may also
have other rights which vary from state to state.
Copyright © 2010 UEi
CO71A-MAN #17086A 10/10
39
000
9
039
MAX
025
HOLD
99 Washington Street
Melrose, MA 02176
Phone
781-665-
1400
Toll Free 1-800-517-8431
