Amprobe CO2-200 User manual

Users Manual
• Mode d’emploi
• Bedienungshandbuch
• Manual d’Uso
• Manual de uso
CO2-200
CO2 Meter
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

CO2-200
CO2 Meter
Users Manual
July 2009, Rev.1
©2009 Amprobe Test Tools.
All rights reserved. Printed in China
English

Limited Warranty and Limitation of Liability
Your Amprobe product will be free from defects in material
and workmanship for 1 year from the date of purchase. This
warranty does not cover fuses, disposable batteries or damage
from accident, neglect, misuse, alteration, contamination, or
abnormal conditions of operation or handling. Resellers are not
authorized to extend any other warranty on Amprobe’s behalf.
To obtain service during the warranty period, return the product
with proof of purchase to an authorized Amprobe Test Tools
Service Center or to an Amprobe dealer or distributor. See Repair
Section for details. THIS WARRANTY IS YOUR ONLY REMEDY.
ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR
STAUTORY - INCLUDING IMPLIED WARRANTIES OF FITNESS FOR
A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE HEREBY
DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES
OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some
states or countries do not allow the exclusion or limitation of an
implied warranty or of incidental or consequential damages, this
limitation of liability may not apply to you.
Repair
All test tools returned for warranty or non-warranty repair or
for calibration should be accompanied by the following: your
name, company’s name, address, telephone number, and proof of
purchase. Additionally, please include a brief description of the
problem or the service requested and include the test leads with
the meter. Non-warranty repair or replacement charges should be
remitted in the form of a check, a money order, credit card with
expiration date, or a purchase order made payable to Amprobe®
Test Tools.
In-Warranty Repairs and Replacement – All Countries
Please read the warranty statement and check your battery before
requesting repair. During the warranty period any defective test
tool can be returned to your Amprobe® Test Tools distributor for
an exchange for the same or like product.

Non-Warranty Repairs and Replacement – US and Canada
Non-warranty repairs in the United States and Canada should be
sent to a Amprobe® Test Tools Service Center. Call Amprobe® Test
Tools or inquire at your point of purchase for current repair and
replacement rates.

CO2-200 CO2 Meter
1
3
5
7
9
11
Humidity Sensor
Alarm Output
DC Jack
CAL/ESC Button
DP/WB Button
Beeper
2
4
6
8
10
12
LCD Display
USB Port
SET Button
RESET Button
MNX/AV Button
LED Light
6 7 8 9 10

LCD Display
2
1
3
4
8 9
5 6 7
10
Primary Screen Displays CO2 Concentration
Relative Humidity In %
Air, Dew Point, Wet Bulb Temperature Display
CO2 Measurement Mode
Minimum/Maximum readings
Time Weighted Average (8 Hours)
Short-Term Exposure Limit
(15 Minutes Weighted Average)
Dew Point Temperature
Air temperature
Wet Bulb Temperature
1
2
3
4
5
7
9
10
6
8

1
CONTENTS
SYMBOLS.......................................................................... 2
UNPACKING AND INSPECTION ....................................... 2
INTRODUCTION ................................................................ 3
Features ........................................................................ 3
OPERATION....................................................................... 4
Alarm output ............................................................... 5
Setup ............................................................................ 6
Calibration Mode ........................................................ 7
• CO2 calibration .................................................... 8
• Manual calibration ............................................... 8
• Humidity calibration ............................................ 7
USB Interface capabilities ........................................... 8
SPECIFICATIONS ............................................................... 9
MAINTENANCE................................................................. 10
TROUBLE SHOOTING ....................................................... 11
APPENDIX ........................................................................ 12

2
SYMBOLS
Caution! Refer to the explanation in this
Manual
Conforms to relevant Australian standards
Complies with European Directives
Do not dispose of this clamp meter as
unsorted municipal waste. Contact a qualified
recycler for disposal.
Warning and Precautions
• Avoid condensation on CO2 sensor
• Do not hold the meter close to faces in case
exhalation affects CO2 levels.
• Do not calibrate the meter in the air with
unknown CO2 concentration. Otherwise, it will
be calibrated as 400ppm by default and leads to
inaccurate measurements.
UNPACKING AND INSPECTION
Your shipping carton should include:
1 CO2-200 CO2 Meter
1 Adaptor
1 User manual
1 Plain white box
If any of the items are damaged or missing, return
the complete package to the place of purchase for an
exchange.

3
INTRODUCTION
Thank you for purchasing this CO2 meter. It measures
CO2 level, air temp., dew point, wet bulb temp. and
humidity and is an ideal instrument for indoor air quality
(IAQ) diagnosis.
Poor indoor air quality is considered unhealthy because
it causes tiredness, loss of ability to concentrate, and
even illness (ex. Sick Building Syndrome). IAQ monitoring
and survey, especially on CO2 level and air ventilation
become widely applied in public areas such as offices,
classrooms, factories, hospitals and hotels. It is also
suggested in regulations of industrial hygiene in some
countries. (Appendix)
With NDIR (non-dispersive infrared) sensor used, this
CO2 meter is stable in long term monitoring. And the
built-in relay for alarm output is especially useful in
ventilation control and HVAC system performance
verification.
Features
• Triple displays of CO2 level, temp. and humidity.
• Stable NDIR sensor for CO2 detection.
• Statistics of weighted averages (TWA & STEL)
• Visible and audile CO2 warning alarm
• Alarm output for ventilation control
• Battery and adaptor power supply
• ABC(Automatic Baseline Calibration) and manual
CO2 calibration
• USB PC connection

4
OPERATION
1. Plug in the adaptor and the meter turns on
automatically with a short beep. It performs
30 seconds countdown (Fig.1) for meter warm
up, then enters normal mode with current CO2,
temperature, and humidity readings displayed.
2. The meter starts taking measurements when
power on and updates readings every second. In
the condition of operating environment change
(ex. from high to low temp.), it takes 30 sec to
respond for CO2 sensor and 30 minutes for RH.
3. Press “p/DP/WB” to switch temperatures
display. The lower left display will cycle from air
temperature, dew point temp., and wet bulb
temp. (Fig. 2)
4. Press “MNX/AVG/q” to see the minimum,
maximum, and weighted average readings.
Each press of it displays MIN, MAX, STEL, TWA in
sequence and returns to normal mode. In MIN and
MAX modes, it shows the minimum and maximum
readings of CO2 on main display, and of AIR/DP/
WBT temperatures and humidity on the lower
displays. In STEL and TWA modes, the main display
shows the weighted average of CO2 readings for
the past 15 minutes (STEL) and 8 hours(TWA), but
the lower displays are the current AIR, DP/WB
temperatures and humidity readings.
NOTE:
• If the meter is turned on for shorter than 15
minutes, the STEL value will be the weighted
average of readings taken since power on. Same
for TWA values appear before 8 hours.
• It takes at least 5 minutes to calculate STEL and
TWA. The display shows “----” during the first 5
minutes from power on (Fig. 3).

5
Alarm Output
The meter features visible and audible alarm to give
warnings when CO2 concentration exceeds the limit.
Users can set up 2 limits: An upper limit for alarm
threshold that requires air conditioning and a lower limit
to stop the alarm. (See P1.0 in setup for setting alarm
limits).
It emits beeps(Abt.80dB) with blinking LED when CO2
level goes over the upper limit. Beeps can be stopped
by pressing any key or automatically stops when
CO2 reading falls below lower limit. If the beeper is
temporarily shut, it will sound again when readings
fall below lower limit and then go over the upper limit
again, or users press “RESET” for more than 1 second
to activate it. LED alarm keeps blinking when beeps are
manually shut. It stops only when readings fall under the
lower limit.
The meter is designed with a relay to send output
for further connection. When CO2 readings go over
the upper limit and cause alarming. The relay picks up
automatically and sends output. It can be connected to
a ventilation system or activator for conditioning the air
quality. The relay will drop out when CO2 readings fall
under the lower limit.
Setup
The advanced setup mode lets you customize your meter.
3 types parameters are available.
P1.0: CO2 Alarm
P3.0: Temperature unit
P4.0: ABC selection
P1.0 CO2 alarm: upper & lower limits
Hold down “SET” under normal mode for more than 1
sec to enter set up mode. To exit setup, press “CAL/ESC”
in P1.0, P3.0, or P4.0.

6
When entering setup mode, P1.0 and “AL” are displayed
on the LCD (Fig. 4). Press “SET” again to go into P1.1 for
setting CO2 upper limit. The current set value will be
blinking on LCD (Fig.5). Press “p/DP/WB” to increase the
value or “MNX/AVG/q”to decrease. Each press tunes
100 ppm and the alarm range is from 100 to 9900ppm.
When the preferred value is set, press “SET” to go into
P1.2 for lower limit setting. After both settings are done,
press “SET” to save or “CAL/ESC” without saving and
return to P1.0.
P3.0: Temperature scale
Press “p/DP/WB“ in P1.0 to access P3.0 for setting up
temperature scale. Press “SET” and it goes into P3.1 with
blinking °C or °F current set on the lower left display.
To switch °C or °F, press “p/DP/WB “or “MNX/AVG/q”.
Then press “SET” to save the setting or “CAL/ESC”
without saving and return to P3.0.
P4.0: ABC selection
Press “p/DP/WB“ in P3.0 or “MNX/AVG/q” in P1.0 to
access P4.0 for selecting ABC function. Press “SET” and it
goes into P4.1 with blinking “dis” default (Fig. 6) on the
lower left display. To enable the ABC function, press “p/
DP/WB“ or “MNX/AVG/q” and “En” blinks for choice.
After the preferred selection is done, press “SET” to save
the setting or “CAL/ESC” without saving and return to
P4.0.
Calibration Mode
CO2 calibration
ABC (Automatic Baseline Calibration)
ABC is to implement baseline calibration to
eliminate the zero drift of the NDIR sensor. It
calibrates the meter at the minimum CO2 reading
detected during 7 days continuous monitoring
(power on). It’s not suitable to implement ABC in
close area with higher CO2 level all the time. The
ABC default is off. To enable the function, please
refer to SETUP P4.0.

7
Manual calibration
The manual calibration is suggested to be done in
outdoor area with ventilating fresh air where CO2
level is around 400 ppm. Do not calibrate in places
crowded with people or close to where with high
CO2 concentration such as ventilating outlets or
fireplaces.
1. Place the meter in the calibration site. Turn on the
meter and hold down “CAL/ESC” and “p/DP/WB“
simultaneously to enter CO2 calibration mode.
400ppm and “CAL” are blinking on the LCD while
performing calibration. (Fig. 7)
2. Wait about 5 minutes until it stops blinking and
the calibration completes and back to normal
mode.
3. To abort the calibration, turn “RESET” over a
second.
Humidity calibration
1. Plug the sensor probe into 33% salt bottle. Hold
down “CAL/ESC” and “MNX/AVG/q” under
normal mode to enter 33% calibration. “CAL” and
calibrating value (32.7% if at 25°C) are blinking
on the LCD with current temperature at the left.
Meter is now calibrating, and will finish in about
60 minutes when “CAL” and humidity value stop
blinking.
2. After 33% calibration, plug the sensor probe into
75% salt bottle, then press “SET” to enter 75%
calibration. “CAL” and calibrating value (75.2%
if at 25°C) are blinking on the LCD with current
temperature at the left. Meter is now calibrating.
Wait about 60 minutes until blinking stops, then
calibration is completed and it returns to normal
mode.

8
3. Users can also calibrate either point. To calibrate
33% only, press “CAL/ESC” to exit when 33%
calibration is completed. To calibrate 75% only,
press “p/DP/WB“ or “MNX/AVG/q” within 5
minutes while initializing 33% calibration. And it
skips 33% and enters 75% calibration.
USB Interface Capabilities
The USB cable and software (optional kit) are required
to transfer data to a PC. Install the USB driver in the
software first before connection. And the connecting
protocol is 9600 bps, 8 data bits, no parity.

9
SPECIFICATIONS
CO2
Range 0~9999ppm
(2001~9999 out of accuracy scale range)
Resolution 1 ppm
Accuracy ±50ppm±5%rdg (0~2000)
(Not specified for out of scale)
Pressure +1.6% reading per kPa deviation from
normal pressure
Dependence 100kPa
Temperature
Range -10.0~60.0°C (14~140°F)
Resolution 0.1°C /0.1°F
Accuracy ±0.6°C / ±0.9°F
Humidity
Range 0.0~95%
Resolution 0.1%
Accuracy ±3%(10~90% at 25°C) ; ±5%(others)
Operating
environment 0~50°C, 0~95%RH (avoid condensation)
Storag
environment
-20~60°C, 0~99%RH
(avoid condensation)
Power supply 12V adaptor
- EMC: Conforms to EN61326-1. This product complies
with requirements of the following European Community Directives:
89/ 336/ EEC (Electromagnetic Compatibility) and 73/ 23/ EEC
(Low Voltage) as amended by 93/ 68/ EEC (CE Marking). However,
electrical noise or intense electromagnetic fields in the vicinity of
the equipment may disturb the measurement circuit. Measuring
instruments will also respond to unwanted signals that may be
present within the measurement circuit. Users should exercise care
and take appropriate precautions to avoid misleading results when
making measurements in the presence of electronic interference.

10
MAINTENANCE
Instrument service personnel. The front panel and
case can be cleaned with a mild solution of detergent
and water. Apply sparingly with a soft cloth and allow
to dry completely before using. Do not use aromatic
hydrocarbons or chlorinated solvents for cleaning.
TROUBLE SHOOTING
Can’t power on
• Check whether the adaptor is well plugged.
Slow response
• Check whether air ow channels on the rear were
blocked.
Error code
E01: CO2 sensor damaged.
E02: The value is under range.
E03: The value is over range.
E04: The original data error results in this error
(RH, DP, WB)
E07: Too low voltage to measure CO2. Check if the
adaptor output is 12V.
E11: Retry humidity calibration.
E17: Retry CO2 calibration.
E31: Temperature sensor damaged.
E34: Humidity sensor damaged.

11
APPENDIX - CO2 LEVELS AND GUIDELINES
NIOSH recommendations
250-350 ppm: normal outdoor ambient concentrations
600 ppm: minimal air quality complaints
600-1000 ppm: less clearly interpreted
1000 ppm: indicates inadequate ventilation; complaints
such as headaches, fatigue, and eye/throat irritation will
be more widespread. 1000 ppm should be used as an
upper limit for indoor levels.
ASHRAE Standard 62-1989: 1000ppm
CO2 concentration in occupied building should not
exceed 1000ppm.
Building bulletin 101 (BB101): 1500ppm
UK standards for schools say that CO2 at averaged over
the whole day(i.e. 9am to 3.30pm) should not exceed
1500ppm.
OSHA: 5000ppm
Time weighted average over five 8-hour work days
should not exceed 5000ppm.
Germany, Japan, Australia, UK: 5000ppm
8 hours weighted average in occupational exposure limit
is 5000ppm.

Fig. 1
Fig. 3
Fig. 5
Fig. 7
Fig. 2
Fig. 4
Fig. 6
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