UEi CO71A, C071 Instruction Manual

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CO71A

INSTRUCTION MANUAL

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

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.

Introduction

The CO 71A 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 CO 71A 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

• CO sensor self test function

• 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.

Operating Instructions

ON/OFF ( button)

The CO 71A 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 countdow n
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
s h ow a single digit and count down for 9 seconds.

000

9

039

MAX

025

HOLD

39

CO71-MAN P. 1