Carbon Monoxide Monitor
770
The Value Leader
www.tpi-thevalueleader.com
TM
770 Features and Push Buttons
Sensor opening
on back of case
Red Warning
LED
Mode Push
Button
Battery compartment access on
back housing
Green Power
LED
LCD Display
SEL Push
Button
ON/OFF
Push Button
CARBON MONOXIDE - SINGLE GAS MONITOR
Product Description
The 770 CO Single Gas Monitor is a state-of- the-art
Carbon Monoxide Instrument designed to measure Carbon
Monoxide in ambient air and to perform a carbon monoxide
build up test . It has a measurement range of 0 to 999 ppm
(parts per million) and displays the readings in 1ppm increments. The unit features a personal audible and visual
alarm, which is factory set at 30ppm CO but can be
changed in the field to keep current with government
legislation. Other features include: maximum reading hold,
elapsed time and manual zero. The audible alarm may be
switched on and off as required. Battery changing is made
easy by use of a simple slide off battery compartment
cover.
The detector uses an advanced electrochemical sensor that
measures Carbon Monoxide and should not be used for any
other purpose.
Note: This instrument meets the requirements of
BS 7967
Calibration is required every 12 months
Specifications
Size:
Weight:
Sensor: 2 year life Electrochemical
Range: 0 to 999ppm ( parts per million )
Accuracy: ± 3 ppm or 5% whichever is the
greater.
Response Time: 90% of reading within 60 seconds.
Temperature:
Batteries: 2 x 1.5v size AA Alkaline .
Operating Time:
On/Off Press the green power switch in order to
turn the instrument on. All segments will
be displayed for approximately 2 seconds.
The screen will then display CO in ppm and
the reading will rapidly count down to zero
as the instrument stabilizes. The green
power on indicator will be illuminated. To
switch off, press the green power switch
twice in quick succession.
Note: Always switch the instrument on in
outside ambient air.
Mode Pressing the Mode key scrolls through the
functions: Record Maximum Reading,
Elapsed Time, Alarm Setting, Audible Alarm,
CO display.
Record Maximum Readings - displays the
maximum CO reading in ppm since power
on.
Elapsed Time - displays, in hours and minutes, the time elapsed since power on.
Maximum reading is 99 hours 59 minutes (
99:59 )
Alarm Setting - displays the value that the
personal audible and visual alarm is set at.
Alarm is factory set at 30ppm CO. Audible
Alarm - In this mode the
Audible Alarm can be switched on and off
by pressing the SEL button.
SEL Manual Zero - The instrument performs an
auto zero at power on. If the instrument
does not zero, a manual zero may be performed. With the CO display screen selected
press and hold the SEL key for 2 seconds
until a short beep is heard. The screen will
display some changing symbols and after 5
seconds the instrument will zero and other
beep will be heard.
Changing Alarm Setting - The 770 is set at
the factory to 30ppm alarm level. With the
instrument switched off press the On/Off key
and the SEL key at the same time until 'Set
1' is displayed. Press the On/Off key and the
set alarm level will be displayed. The Mode
key will increase the set alarm level and the
SEL key will decrease it. Each key press will
change the alarm level reading by 1 ppm.
When the desired alarm level has been
selected press the On/Off key to set the level
and 'End' will flash on the screen. Press
On/Off to return to the CO screen.
Other Features
· When the audible alarm is switched off a
small 'double speaker' symbol will be displayed at the bottom left of the LCD. When
the alarm setting is exceeded a 'warning'
symbol is displayed at the bottom center of
the screen and the red warning indicator is
illuminated. As the battery level approaches
2 volts a 'BAT' warning symbol is displayed
to indicate low battery level. When the battery level gets too low the unit will automatically switch off.
Battery Replacement
Locate the battery compartment on the rear
of the unit. Place thumb on the battery compartment cover and press and slide down
cover to remove. Replace batteries and slide
cover back into place.
Warranty
Your CO detector is warranted to be free
from defects for a period of 3 years. The
Electrochemical sensor is guaranteed for 2
years. This warranty covers normal use and
does not over damage which occurs from
tampering, accident, misuse or neglect.
Instruments out of warranty will be repaired
for a service charge. Return the unit postpaid and insured to:
Test Products International, Inc.
9615 SW Allen Blvd.
Beaverton OR 97005
(503) 520 9197
This warranty gives you specific legal rights and
you may also have other right which vary from
state to state.
The Value Leader
www.tpi-thevalueleader.com
770 Instruction Manual
Test Products International, Inc.
9615 SW Allen Blvd
Beaverton, OR 97005-4814 USA
Copyright © 2001, Test Products International, Inc
TM
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