TSI IAQ10 User Manual

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).

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

SECTION 1

General Description

The Model IAQ10 is a hand-held meter to measure Carbon Dioxide (CO

), 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 CO

molecules: CO2

molecules absorb light at a specific wavelength of 4.26 µm. This wavelength is in the infrared (IR) range. High concentrations of CO

molecules absorb more light than low

concentrations. This technique is called non-dispersive infrared (NDIR) detection.

SECTION 3

Safety

When using the IAQ10 to check for CO

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.

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.

SECTION 5

Operation of the Model IAQ10

Note: Do not hold the instrument close to your face. Humans exhale CO

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

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

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.

The display updates every second and each reading is the average of five samples.

(5) Key

The instrument only displays CO

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.

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.

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 “calibra-

tion 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

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 CO

instrument is

recommended monthly. You need a gas tank and regulator. Calibration grade gases are available through local industrial gas supply.

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 sam-

pling in real-time. “ZerO” will appear

on the display if the instrument is in calibration mode.

3. Install the regulator on the zero calibra-

tion 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

indicates “SPAN” and the span concen-

tration.

6. Install the regulator on the span calibra-

tion 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 concentra-

tion 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.

SECTION 8

Troubleshooting of the Model IAQ10

This table lists the symptoms, possible causes, and recommended solutions for the Model IAQ10.

Symptom

No display Unit not

Low or dead

Dirty battery

Batteries

BAT is blinking

Cal err Error in field

Possible Causes

switched on

batteries

contacts

installed incorrectly

Dirty battery contacts Batteries are low

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

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.

DIP Switch OFF

1-3 Must be OFF ----4 not assigned not assigned 5 not assigned not assigned 6 Beep is turned

OFF

7 Normal mode Field Verifica-

8 not assigned not assigned

- The ON position is away from the batteries

and OFF is towards the batteries.

Beep is turned ON

tion mode

- Switch 1 is towards the top of the case and

Switch 8 is nearest the bottom.

Specifications

(subject to change without notice)

CO2 Sensor type:

Dual wavelength detector with non-

Range: 0 to 5000 ppm

Accuracy ±3% of reading or ±50 ppm, whichever

Resolution 1 ppm

Response time <10 minutes in still air

dispersive infrared (NDIR) sensor

is greater

1, 2

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: Minimum 10 hours using alkaline

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].

batteries

TSI Instruments Ltd. October 2005 Lancaster Road Printed in USA Cressex Business Park Part No. 1980532, Rev. A High Wycombe Buckinghamshire Tel: +44 (0) 149 4 459200 HP12 3QP England Fax: +44 (0) 149 4 459700

E-mail:

www.airflowinstruments.co.uk TSI Incorporated

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