CO Meter OWNER’S MANUAL Model IAQ10

CO Meter OWNER’S MANUAL Model IAQ10
OWNER’S MANUAL
CO2 Meter
Model IAQ10
LIMITATION OF WARRANTY AND LIABILITY
Seller warrants the goods sold hereunder, under normal use and service as described in
the operator's manual, shall be free from defects in workmanship and material for
twenty-four (24) months, or the length of time specified in the operator's manual, from
the date of shipment to the customer. This warranty period is inclusive of any statutory
warranty. This limited warranty is subject to the following exclusions:
a. Hot-wire or hot-film sensors used with research anemometers, and certain other
components when indicated in specifications, are warranted for 90 days from the
date of shipment.
b. Parts repaired or replaced as a result of repair services are warranted to be free
from defects in workmanship and material, under normal use, for 90 days from the
date of shipment.
c. Seller does not provide any warranty on finished goods manufactured by others or
on any fuses, batteries or other consumable materials. Only the original manufacturer's warranty applies.
d. Unless specifically authorized in a separate writing by Seller, Seller makes no
warranty with respect to, and shall have no liability in connection with, goods which
are incorporated into other products or equipment, or which are modified by any
person other than Seller.
The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS
stated herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE.
TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER
OR BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES,
INJURIES, OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS
BASED ON CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE)
SHALL BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE
PURCHASE PRICE, OR, AT THE OPTION OF SELLER, THE REPAIR OR
REPLACEMENT OF THE GOODS. IN NO EVENT SHALL SELLER BE LIABLE FOR
ANY SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL
NOT BE RESPONSIBLE FOR INSTALLATION, DISMANTLING OR REINSTALLATION
COSTS OR CHARGES. No Action, regardless of form, may be brought against Seller
more than 12 months after a cause of action has accrued. The goods returned under
warranty to Seller's factory shall be at Buyer's risk of loss, and will be returned, if at all,
at Seller's risk of loss.
Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY
AND LIABILITY, which contains the complete and exclusive limited warranty of Seller.
This LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or
its terms waived, except by writing signed by an Officer of Seller.
Service Policy
Knowing that inoperative or defective instruments are as detrimental to TSI as they are
to our customers, our service policy is designed to give prompt attention to any
problems. If any malfunction is discovered, please contact your nearest sales office or
representative, or call Customer Service department at +44 (0) 149 4 459200 (UK),
(800) 874-2811 (USA), or (1) 651-490-2811 (International).
ii
Table of Contents
LIMITATION OF WARRANTY AND LIABILITY ...... ii
SECTION 1 General Description .....................................2
SECTION 2 Theory of Operation: NDIR Sensor ...........2
SECTION 3 Safety ..............................................................3
SECTION 4 Setting-Up the Model IAQ10 ......................4
Supplying Power ...........................................................4
Installing the Batteries...................................................4
Using the Optional AC Adapter..................................4
SECTION 5 Operation of the Model IAQ10...................5
ON/OFF Key..................................................................5
READ Key .......................................................................6
(5) Key............................................................................7
RECALL (6) Key...........................................................7
SECTION 6 Maintenance of the Model IAQ10..............8
Case ..................................................................................8
Storage .............................................................................8
SECTION 7 Service Information ......................................8
Factory Calibration ........................................................9
Field Verification..........................................................10
SECTION 8 Troubleshooting of the
Model IAQ10 ................................................................13
SECTION 9 Internal DIP Switch Settings .....................14
Specifications.....................................................................17
1
SECTION 1
General Description
The Model IAQ10 is a hand-held meter to
measure Carbon Dioxide (CO2), displayed
in units of parts per million (ppm). An
NDIR sensor in the top end of the meter
measures gas content by diffusion through
sensing holes.
The IAQ10 ships in a pouch that provides a
small amount of protection to the display
and the sensing holes in the top of the
instrument case. The instrument ships with
batteries (which are not installed), a
calibration sheet, and this Owner’s Manual.
SECTION 2
Theory of Operation: NDIR Sensor
The IAQ10 measures carbon dioxide
concentration by relying on one of the
natural properties of CO2 molecules: CO2
molecules absorb light at a specific wavelength of 4.26 µm. This wavelength is in the
infrared (IR) range. High concentrations of
CO2 molecules absorb more light than low
2
concentrations. This technique is called
non-dispersive infrared (NDIR) detection.
SECTION 3
Safety
When using the IAQ10 to check for CO2
values, make certain that you can safely
raise and hold the instrument while
making measurements. Be especially
careful when working on a ladder.
Observe all necessary precautions so that
the unit does not become caught in moving
machinery or touch any exposed electrical
wiring.
DANGER!
Use with corrosive or other dangerous or
explosive gas mixtures is not recommended.
3
SECTION 4
Setting-Up the Model IAQ10
Supplying Power
The IAQ10 can be powered in one of two
ways: four AA-size batteries or the optional
AC adapter.
Installing the Batteries
Insert four AA batteries as indicated by the
diagram located on the inside of the battery
compartment. The Model IAQ10 is designed to operate only with alkaline
batteries. When 15% battery life is remaining, the battery indicator will blink,
indicating the batteries need to be changed.
At 0%, “LO” will display and the meter will
shut off within 10 seconds.
Using the Optional AC Adapter
The optional AC adapter allows you to
power the Model IAQ10 from a wall outlet.
When using the AC adapter, the batteries
(if installed) will be bypassed. The AC
adapter is NOT a battery charger.
4
SECTION 5
Operation of the Model IAQ10
Note: Do not hold the instrument close to your
face. Humans exhale CO2 and this will affect
the accuracy of the readings.
When pressing the keys on the keypad, the
Model IAQ10 will beep to confirm the
function. If you press a key and the Model
IAQ10 does not beep, the Model IAQ10
does not allow that function during the
selected mode. (See Section 9 for information on disabling this feature through an
internal DIP switch.)
ON/OFF Key
Press the ON/OFF key to turn the Model
IAQ10 on and off. When the instrument is
first turned on, it goes through a preprogrammed power-up sequence that includes
an internal self-check.
First, all displayable LCD segments will
appear. If a problem is detected, the display
will show “CAL” to indicate that it should
be returned for servicing and/or
5
calibration. When the Model IAQ10
completes the internal self-check, it will
display the approximate percentage of
battery life remaining.
Note: The sensor needs up to 10 minutes to
stabilize in still air before displayed readings
can be considered accurate. Moving the
instrument may decrease this stabilization time.
READ Key
Carbon dioxide concentrations will be
displayed in parts per million (ppm). The
IAQ10 can be left in a room to monitor
general conditions, but it is important to
ensure that the sensing holes at the top of
the meter are not covered or in a
downward position.
Press the READ key once to start taking a
CO2 sample; press it again to end the
sample. The minimum sample time is five
seconds, even if the second press occurs
after two, three, or four seconds. SAMPLE
will flash on the display while the instrument takes a measurement.
6
The display updates every second and each
reading is the average of five samples.
(5) Key
The instrument only displays CO2.
RECALL (6) Key
Press the RECALL key repeatedly to
display: minimum value (MIN), maximum
value (MAX), average value (AVG), and
number of seconds sampled (COUNT).
Press the READ key to return to normal
measuring mode.
The instrument does not store readings.
The information viewed in the recall mode
is for the sample reading just taken. Once a
new sample starts or the instrument is
turned off, all previous data is lost.
The (5) and (6) references on keys are
used during the field calibration process.
7
SECTION 6
Maintenance of the Model IAQ10
The Model IAQ10 requires very little
maintenance to keep it performing well.
Case
If the instrument case or storage case needs
cleaning, wipe it off with a soft, damp
cloth. Never submerge the IAQ10 in any
liquid or allow any liquid to enter the
sensing holes.
Storage
When storing the Model IAQ10 for more
than a month, TSI recommends removing
the batteries. This prevents possible
damage due to battery leakage.
SECTION 7
Service Information
Please return your Product Registration
Card immediately. This allows us to send
service reminders, special offers, and
important information about your product.
8
Before sending your instrument for
calibration or repair, you should call
Customer Service. The service department
will provide you with the cost of service or
calibration, Return Material Authorization
(RMA) number, and shipping instructions.
Please have the following information
available when you call:
• Owner’s name, address, and phone
number
• Billing address, if different and
applicable
• Instrument name and model
• Serial number
• Date of purchase
• Where purchased
TSI recommends that you keep a “calibration log” and keep all records of service on
your instrument.
Factory Calibration
To maintain a high degree of accuracy in
your measurements, TSI recommends that
you return your instrument to the factory
for annual calibration. For a nominal fee,
we will calibrate the unit and return it to
9
you with a NIST (US National Institute of
Standards and Technology) traceable
certificate. This “annual checkup” assures
you of consistently accurate readings; it is
especially important in applications where
strict calibration records must be maintained.
Send the instrument to TSI Instruments
Ltd. prepaid. Securely package your
instrument in a strong container surrounded by at least 5 cm of suitable shockabsorbing material. Include a purchase
order that clearly shows the instrument
model number and serial number, a contact
name, phone, fax number, and RMA
number. Mark the outside of your shipping
container with the RMA number. This will
expedite processing of your instrument
when we receive it.
Field Verification
Field verification of your CO2 instrument is
recommended monthly. You need a gas
tank and regulator. Calibration grade gases
are available through local industrial gas
supply.
10
1. Turn the instrument off. Under the
batteries, move DIP switch # 7 to ON.
Turn the instrument back on.
2. Press and hold the READ key to begin
the calibration procedure. The display
will begin a countdown from 5 to 0.
Release the key when the display reads
0. If the key is released too soon or too
late, the instrument will go back to sampling in real-time. “ZerO” will appear
on the display if the instrument is in
calibration mode.
3. Install the regulator on the zero calibration gas tank and connect tubing from
the regulator to the inlet fitting on the
top of the Model IAQ10. The regulator
has a fixed flow rate of 0.3 L/min. Do
not use a flow rate lower than
0.25 L/min or higher than 1.0 L/min.
4. Turn on gas flow.
5. Press and release the READ key to begin
a zero reading. The Model IAQ10 begins
a 60-second countdown during the zero
reading. The actual zero reading is
taken in the last 10 seconds. When the
countdown is completed, the display
11
indicates “SPAN” and the span concentration.
6. Install the regulator on the span calibration cylinder and connect tubing from
the regulator to the inlet fitting on the
top of the Model IAQ10.
7. Use 5 and 6 to adjust the concentration displayed on the Model IAQ10 to
match the concentration on the span gas
cylinder.
8. Press and release the READ key to take
a span gas reading. The Model IAQ10
starts a 60-second countdown. When the
countdown reaches zero, the instrument
returns to the normal measurement
mode.
9. With the gas still connected, observe the
reading on the display. It should indicate the span gas concentration. If not,
repeat this procedure.
10. If the displayed reading is accurate,
remove the regulator and tubing. The
calibration is now complete.
11. Before taking measurements, turn the
instrument off and move DIP switch #7
back to OFF.
12
SECTION 8
Troubleshooting of the Model IAQ10
This table lists the symptoms, possible
causes, and recommended solutions for the
Model IAQ10.
Symptom
No display
Possible
Causes
Unit not
switched on
Low or dead
batteries
Dirty battery
contacts
Batteries
installed
incorrectly
BAT is
blinking
Dirty battery
contacts
Batteries are
low
Cal err
Error in field
calibration
Corrective
Action(s)
Switch on the
unit
Replace the
batteries
Clean the
battery
contacts
Refer to
battery
illustration
inside battery
cover
Clean the
battery
contacts
Replace the
batteries
Perform
calibration
again
13
Symptom
Display
reads “LO”
Possible
Causes
Batteries are
low
Corrective
Action(s)
Replace the
batteries
Note: If your symptoms are not remedied
by the suggested corrective action, call TSI
Instruments Ltd.
SECTION 9
Internal DIP Switch Settings
To access the DIP switches, remove the
batteries from the battery compartment. On
the inside of the battery compartment,
there is a window with eight DIP switches.
The table below shows the functions for
each switch.
CAUTION:
Make certain that power is turned off before
changing DIP switch settings.
14
DIP
Switch
1-3
4
5
6
OFF
Must be OFF
not assigned
not assigned
Beep is turned
OFF
Normal mode
ON
----not assigned
not assigned
Beep is turned
ON
7
Field Verification mode
8
not assigned
not assigned
The ON position is away from the batteries
and OFF is towards the batteries.
- Switch 1 is towards the top of the case and
Switch 8 is nearest the bottom.
15
Specifications
(subject to change without notice)
CO2 Sensor type:
Dual wavelength detector with nondispersive infrared (NDIR) sensor
Range:
0 to 5000 ppm
Accuracy
±3% of reading or ±50 ppm, whichever
is greater1, 2
Resolution
1 ppm
Response time
<10 minutes in still air
Operating Temperature Range:
5 to 70°C
External Meter Dimensions:
89 mm × 168 mm × 41 mm
Display:
LCD, 4 digits, 10-mm high
Power requirements:
Four (4) AA-size alkaline batteries
Battery Life:
1
2
Minimum 10 hours using alkaline
batteries
Add ±0.36% of reading per °C away from calibration temperature
Under standard barometric pressure of 29.92 in Hg (406.8 inches H2O)
[101.4 kPa].
TSI Instruments Ltd.
Lancaster Road
Cressex Business Park
High Wycombe
Buckinghamshire
HP12 3QP England
E-mail: info@airflowinstruments.co.uk
Web: www.airflowinstruments.co.uk
October 2005
Printed in USA
Part No. 1980532, Rev. A
Tel: +44 (0) 149 4 459200
Fax: +44 (0) 149 4 459700
Copyright © 2005
TSI Incorporated
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