Co2meter 77597 User manual

OPERATION MANUAL
PORTABLE IAQ METER
CO2Meter.com
131 Business Center Drive
Ormond Beach, FL 32174 USA
Support: [phone]
Email: [e-mail]

Thank you f or purchasing t his por t able
Indoor Air Quality (
I AQ) me t er . The me t er
me
asures the carbon dioxide ( CO2) level
,
carbon monoxide (
CO) level , air
t
emperature , dew poin t, we t bulb
t
emperature and humidi t y, and is an ideal
portable
instrument f or I AQ diagnosis .
Poor indoor air quali t y is considered
unheal
t hy because i t causes t iredness ,
los
s o f abili t y t o concen t ra t e , and even
illness
(for example: Sick Building
Syndro
me) . I AQ moni
t oring has
become
widel
y applied in public areas such as
o
ff ices , classrooms , f ac t ories , hospi t als
an
d ho t els . It is also sugges t ed in
regula
t ions o f indus t rial hygiene in some
coun
t ries (see Appendix).
The por t able CO2 meter uses ND I R (non-
dispersive
in f rared) t echnology t o ensure
reliabili
t y and long t erm s t abili t y . It is
use
f ul in veri f ying HVAC sys t em
performance and air ven t ila t ion con t rol .
The IAQ meter also measures carbon
monoxide. CO is a colorless , odorless ,
and t as t eless gas which is ligh t er t han air .
It is highly t oxic t o humans and anima ls .
The maximum CO indoor air quali t y level
per ASHRAE Residen t ial s t andards 62-
1989
f or living area is under 9ppm.
Besides , i t is also necessary t o remove
employees f rom enclosed space i f t he
CO concen t ra t ion exceeds 100ppm per
the
OSHA exposure limit . Please re f er t o
the Appendix f or t he de t ails .
1
INTRODUCTION

This package contains:
Meter
4 AA batteries
Mini USB cable and software C
D
Operation manual
Hard carrying case
Adaptor (9V/100~240Vac)
33% calibration salt
75% calibration salt
2
MATERIAL SUPPLIED
Features:
•Big LCD display with blue
backlight to use in dark area
•One touch to display CO2 /Dew
Point temperature/Wet bulb
temperature/
•Air temperature/Humidity/CO in
turns. Designed with NDIR (non-
dispersive infrared) Waveguide
technology CO2 sensor
•Programmable warning CO level
•Long term NDIR CO2 sensor drift
compensation
•Audible alarm (~80db) threshold
setting Max, Min, TWA, STEL
functions included Mini USB to PC
download function for analysis
•99 memory points manually
recorded
•24,000 data points auto recording
•Review 99 points manual record
•Hold function freezes current
readings Wide, slotted housing
design improves air ventilation for
quicker and more accurate
response
•Easy to manually calibrate
CO2 in fresh air (~400ppm).

The meter is powered by either 4 AA
batteries or a DC adaptor (9V/1A output).
Install the batteries into the battery
compartment on the rear and make sur
e
they are in correct polarity and good
contact. When an adaptor is used, it wil
l
cut off the power supply from batteries.
The adaptor can’t be used as a battery
charger.
When battery voltage gets low
B will
appear on the LCD (Fig.1).
The CO2sensor cannot work normally
under low voltage. Please replace wit
h
fresh batteries or connect the adaptor.
Fig.1
3
CO
2
PM
B
POWER SUPPLY

MIN
AVG
TWA
O
O
F
AM
Symbols
UpperLCDCO2/CO/Temp/RH
display
LowerLCDClock/timer display
CO
2
CO
HOLD
MIN/MA
X
STEL
Carbon dioxide reading
Carbon monoxide reading
Readings are frozen unchanged
Minimum/Maximum readings
Short-term exposure limit (15
minutes weighted average)
Time weighted average (8 hours)
Low battery indicator
Dew point temperature
Dry air temperature
Wet bulb temperature
Unit of relative humidity
Celsius/Fahrenheit temperature
In calibration mode
In manual/automatic logging
In manual records recall mode
TWA
B
DP
TA
WBT
%RH
oC/oF
CAL
REC
RECALL
Turns on and off the meter.
Enters setup mode while meter is off
.
Sets as non-sleep mode withHOLD.
Exits setup/recall page.
Start automatic logging.
ON/OFF
SET
START
ESC
Press to switch displayed mode.
Long press to enter memory recall mode.
4
MODE
RECALL
KEYPAD
HOLD
CO
2
CO TADPWBT
MAX
C
STEL
%rh
CAL
REC
B
Re call
PM
LCD DISPLAY

HOLD
Freezes the current readings.
Selects unit or increases value in setup.
Cancels data hold function.
MEMPress to manually record the reading.
Selects unit or decreases value in setup.
POWER ON/OFF
Press to turn the meter on and off.
M N /AVG
Activates MIN, MAX, TWA, TEL
X
function. Saves and finishes settings.
ON/OFF
SET
At power up, it emits a short beep and
performs a 30 second countdown
(Fig.2). It then displays the normal mode
and clock (Fig.3). The real time display
will cycle between date and time in turns.
Fig.2
Fig.3
While waiting for 30 seconds to warm up
is best, for a quick start you can press
M X /AVG
N
for 2 seconds to end the warm up
and show the normal display.
TAKING MEASUREMENT
The meter starts when the power is
turned on and updates readings every
second. When the operating
environment changes quickly (ex.
going outdoors on a cold day), it can
takes 30 seconds for the CO2level to
change and up to 30 minutes for RH.
NOTE: Do not hold the meter close to
your face. Exhalation affects the CO2
levels. 5
CO
2
AM
OPERATION

CO2 (Carbon Dioxide)
RECALL to switch the mode to CO2.
You can view the CO2 reading in ppm o
n
the main display (Fig.4). The lower
display shows the real time clock.
Press
MODE
Fig.4
Fig.5
CO (Carbon Monoxide)
RECALL to switch the mode to CO.
You can view the CO reading in ppm
on the main display (Fig.5). The lower
display shows the real time clock.
AIR, DP, WB Temperature
Press
MODE
to switch to temperature
display (Fig.6). You can view the dew
point temperature, and next the wet bul
b
temperature (Fig.7). The lower displa
y
shows the real time clock.
Press
MODE
RECALL
Fig.6
Fig.7
Humidity
Press
MODE
to switch to humidity display
RECALL
(Fig.8).The lower display shows the real
time clock.
Fig.8
6
%rh
WBT
O C
TA
O
C
PM
CO
AM
CO
2
AM

STEL, TWA and current value in turns.
Each press of displays MIN, MAX,
STEL, TWA, current value in sequence.
(Fig.10~12). To return to normal mode,
press the STARTkey to escape (Fig.13).
CURRENT MIN,MAX,STEL,TWA REVIEW
This meter allows you to check the
minimum, maximum, STEL, TWA and
current value from the moment you pres
s
the
M X /AVG
key. Under normal mode, press
BACKLIGHT
The backlight will be activated for 10
seconds by pressing any key.
DATA HOLD
In normal display mode, press HOLDto
freeze the readings, "HOLD” icon is
flashed on the left top of LCD(Fig.9). Al
l
current readings are kept unchanged.
Press HOLDagain to cancel the hold
function.
Fig.9
N
M
X
/AVG
N
to see the minimum, maximum,
M
X
/AVG
N
ESC
If the meter is turned on for shorter than
15 mins, the STEL and TWA values will b
e
the weighted average of readings take
n
since power on. The actual TWA value
s
will appear after 8 hours.
It takes at least 5 mins to calculate STE
L
and TWA. The display will show “----”
during the first 5 minutes after power on.
While in “HOLD” mode, STEL and TWA
will update every 5 mins.
7
HOLD
%rh
AM

The meter also
allows you to check the
min/max/STEL/TWA values calculated
since power on. Under normal mode
press to see min/max/STEL/TWA
and real time sequence. Each press of
the displays the sequence in turn,
then returns to the current mode
(Fig.10~13).
STEL and TWA are calculated for CO2 only.
In this mode, pressto switch the
displayed parameters (Fig 14).
Press the key to leave this mode and
return to normal mode.
You can tell between the normal display
and current review by checking the time
display format. In normal display, the
date & time display in turns. In current
review, the time display is the
accumulated time of how long you are i
n
max/min mode.
MIN
Fig.11
Fig.10
Fig.13
Fig.12
NOTE:
“MANUALY RECORD &
“RECALL” FUNCTIONS
ARE DISABLED IN
MIN/MAX/AVG MODE.
NOTE:
TWA & STEL ARE FOR
CO2ONLY.
MIN/MAX ARE FOR ALL
PARAMETERS.
Fig.14
8
CO
MAX
CO 2
AM
CO
2
CO
2
T
WA
CO
2

RECORDING DATA
The meter features a 99 point memory.
In normal or hold mode, Press MEM key
to record.
icon and main display
flash for about 3 seconds. The main
display shows the memory serial number
up to 99 points ((Fig. 15).
Each memory contains all parameters
(CO2, CO, TA.....%RH), not only the
parameter you choose to see on the main
display. If the reading change
s
quickly, you can press
HOLD
to freeze the
reading before
manually recording
Fig.15
the data.
The manually recording function is
disabled in min/max mode.
99 MEMORY RECALL
The meter has 99 memory locations
that can be saved and reviewed.
In normal or hold mode, press
MODE
key
RECALL
for more than 2 seconds until the
icon flashes.
Press or to scroll through the
memories. The memory serial number
displays on the main LCD first and readings
come after (Fig.16 & 17).
Rec al l
Rec al l PM
Fig.16
Fig.17
9
CO
2
Re ca ll
TA
REC
AM
REC

Press
MODE
key to switch the display
RECALL
parameter (Fig.18).
Fig.18
Rec al l PM
The time displayed in memory recall
mode is the recording time of this
memory.
To leave the memory recall mode,
press ESCkey to exit and return to
the normal display.
ALARM
The meter features an audible alarm to
give warnings when CO concentration
exceeds the limit. (See P.20 in setup
for setting alarm threshold). It emits
beeps (approx. 80db) if the CO level
goes over the set value and stops only
when the readings fall below the set
value. It beeps again if the value goes
over the limit.
DATA LOGGING
The meter can automatically record
readings of CO2/CO/TEMP/RH for long
time environment monitoring. The
memory capacity is 8,000 points. Users
can set that sampling rate from 1 second
to 4 hours 59 minutes and 59 seconds
(See SETUP Section).
START
After sampling rate is selected, press
for 2 seconds under normal
START
ESC
mode to start logging. The
REC
icon
flashes to indicate the logging status
and LCD main display shows the real
time CO2 value. Lower displays are th
e
real time clock (Fig.19).
10
CO

Fig.19
To terminate data logging, press
for 2 seconds,
REC
icon stops flashing.
The meter will only record one session
at a time. Once
REC record mode is
activated all previous data is erased.
Download logged data on a PC
prior to
recording another data log.
The meter turns off automatically after
20 minutes of inactivity. To override th
e
function, hold downandat
the same time for 2 seconds until “n”
appears (Fig.20).
NOTE: AUTO POWER OFF IS
DISABLED DURING CALIBRATION.
Fig.20
Fig.21
When the meter is off, hold down
for more than 1 second to enter setup
mode.
Press or to scroll through the
setup options.
Press to exit setup mode.
11
SETUP
AUTO POWER OFF
CO
2
REC

P10 CLEAR MEMORY
When entering setup mode, P10 and
“CLr” (Fig.21) are displayed on the LCD.
Press
N
to go into P11 and decide to
M
X
/AVG
clear or keep all the manual records.
The current set will be blinking on LCD
(Fig.22).
Press or to choose NO or YES
HOLD MEM
and press
N
to confirm.
M X /AVG
Fig.22
Press
START
to return to P10.
ESC
P20 CO ALARM
When entering setup mode, P20 and
“ALAr” (Fig.23) are displayed on LCD.
Press
N
to go into P21 and set the
M
X
/AVG
COalarm threshold. The current set
value will blink on the LCD (Fig.24).
Press HOLD
to increase the value or
MEM
to decrease. The selectable alarm
limits are 15~200ppm. Each press is
5ppm. When the preferred alarm value
is set, press
N
to save the setting or
M
X
/AVG
START
without saving and return to P20
ESC
Fig.23
Fig.24
12
CO
CO

Press STARTto return to P30.
P30 TEMPERATURE UNITS
When entering setup mode, P30 and
“unit” (Fig.25) are displayed on the LCD.
Press
N
to go into P31 and select the
M
X
/AVG
temperature units in 0C or 0F.
The current set will display on LCD
(Fig.26).
Press
HOLD
or
MEM
to pick 0C or 0F
and press
M
X
/AVG
N
C
Fig.25
Fig.26
ESC
P40 LOGGING SAMPLING RATE
Go into P40 for setting sampling rat
e
of data logging (Fig.27). The range
is from 1 second to 4 hours 59
minutes and 59 seconds.
N
Press
M
X
/AVG and it goes into setting
with blinking Hour digits on the lower
display. To change the digit, press HOLD
to increase and
MEM
to decrease. Press
to confirm and enter Minute setting.
M
X
/AVG
N
N
Press
M
X
/AVG again to confirm and ente
Second setting (Fig.28). Press
to confirm the rate setting or
N
M X /AVG
START
ESC
without saving and return to P40.
Fig.27
Fig.28
13
TA
O
TA

P50 PRESSURE COMPENSATION
When entering setup mode, P50 and
“PrES” (Fig.29) are displayed on the LCD.
Press
N
to set pressure compensation
M
X
/AVG
value for CO2 measurement.
The current set will flash on LCD
(Fig.30).The barometric pressure uni
t
is kpa.
Press
HOLD
or
ME
M
to adjust the pressure
value and press
to confirm.
M
X
/AVG
N
Fig.30
Fig.29
Press STARTto return to P50.
ESC
P60 REAL TIME CLOCK
Go into P60 to set the real time clock.
Press to enter into P61 to set the
time format as 12 or 24 hour. The current
setting will flash on the LCD. Press
or to change the format and press
the key to confirm.
NOTE: Date format is YY/MM/DD
The date will show on the lower display
with the year digit blinking. Press
to
increment or to decrement the
digits.
Use the same process to set the month
and day. Press to return.
Fig.31
Fig.32
14
PM
CO
2
CO
2

The meter is calibrated at standard
400ppm CO2concentration at the
factory. You should manually calibrate
regularly to maintain good accuracy.
NOTE:
When accuracy becomes a concern afte
r
long use, you can return the meter to
CO2Meter, Inc. for standard calibration.
For successful manual calibration, it
should only be completed
with the meter
located in fresh, outdoor air. Start with
the unit powered off.
First press
START
+
MEM
then also
ON/OFF
SET
ESC
simultaneously for 3 seconds to turn on
the meter and enter calibration mode
(Fig.33).
Press or to choose
from humidity, CO or CO2 calibration
menus.
Press
key to select the
calibration. 400ppm and
icon
will blink on the screen.
(Fig.34).
Wait about 10 minutes until the blinking
stops and the calibration is completed
automatically. To abort the calibration,
press at any time.
NOTE:
Ensure the batteries are fully charged or
meter is plugged in during calibration to
prevent interrupted or failed calibration.
15
CAL
IMPORTANT:
Do not calibrate the meter in airwit
h
an unknown CO2concentration.
Otherwise, it will be calibrated as
400ppm by default which will lead
to inaccurate measurements.
CO2CALIBRATION

Fig.33
Fig.34
The meter defaults to be calibrated the
humidity with 33% and 75% salt solution
.
The ambient condition is recommended
to be at 25oC and stable humidity(better
to be close to the calibrating value). To
abort calibration, just turn off the meter.
33% calibration
Plug the sensor probe into 33% salt
bottle. First press
START
+ MEM , also
ON/OFF
SET
ESC
simultaneously for 3 seconds to turn on
the meter and enter calibration mode
(Fig.33).
Press or to choose
the 33% humidity calibration menu.
Press to select 33% calibration
(32.8% if at 25oC) and to start.
Meter is now calibrating, and will finish
in about 60 minutes when “CAL” and
humidity stop blinking. To abort
calibration, press at any time.
75% calibration
Plug the sensor probe into 75% salt
bottle and enter calibration mode. In
calibration mode, press HOLDto select
75% calibration (Fig.35), press to
begin.
M X /AVG
N
16
CAUTION:
Do not calibrate the humidity without
the default calibration salt. Otherwise
,
it will cause permanent damage.
Contact CO2Meter, Inc. for calibration
salt or services.
RH CALIBRATION
CO
2
CAL
%rh
CAL

“CAL” and calibrating value (75.3% if at
25
o
C) are blinking on the LCD.
Meter is now calibrating, and will finish
in about 60 minutes when “CAL” and
humidity stop blinking. To abort
calibration press at any time.
Fig.35
CAL
When the accuracy becomes a concern
after a long time usage, return to dealer
s
for standard calibration. It is necessary
to have standard CO gas for calibration.
Place the meter in the calibration site.
First press
START
+
MEM
then also
ON/OF
ESC
SET
simultaneously for 3 seconds to turn on
the meter and enter calibration mode
(Fig.33).
Press
HOLD
or
MEM
to select the CO
0ppm or 400ppm calibration. ppm and
“
Press
“ icon will blink on the LCD.
to start the calibration
M
X
/AVG
N
(Fig.36 & 37).
Wait about 10 minutes until the blinking
stops and the calibration is completed
automatically. To abort the calibration,
press at any time.
17
CAL
CAUTION:
Do not calibrate the meter in the ai
r
with unknown CO concentration.
Otherwise, it will be calibrated as
0 or 400ppm by default and leads t
o
inaccurate measurements.
CO CALIBRATION
%rh

Fig.36
Fig.37
NOTE:400ppm calibration gas can
vary from 385~415ppm (400+15ppm)
? Cannot power on
-Press SETfor more than 3 seconds
ON/OFF
and try again.
-
Check whether batteries are in good
contact and correct polarit
y, or the
adaptor is plugged in correctly.
-You may also take out the batteries for
10 mins and then put them back in
again.
? Fixed readings
Check whether data hold is activated.
(HOLD icon displayed)
? Slow response
Check whether the air flow channels on
the rear are blocked.
? Error messages
E01/E33: CO2 sensor is out of order. Try
new battery first.
E02: The value is under range.
E03: The value is over range.
E04: The original data error results in
this error (DP, WB)
E11: Retry humidity calibration.
E16: Retry CO calibration.
E31: Temperature sensor or
AD damaged.
E32: Memory IC damaged.
E33: Humidity sensor or circuit damaged.
18
TROUBLESHOOTING
CO
CA L
CO
CA L

Connect the logger to PC, users can do
logging setting and data transmission
with the included software.
Plug the USB cable into the socket at
the right side of the meter and the othe
r
port to PC. Then install the software i
n
your PC with the following procedure.
1.Insert the CD Rom and run installation.
Select a preferred directory and click
“Next” step by step and finish it.
2. After the software installation is
completed, it will run USB drive
r
installation next.
19
PC CONNECTION