INSTRUCTION & OPERATIONS
MANUAL
AQ PRO
PORTABLE MULTIFUNCTIONAL
INDOOR AIR QUALITY MONITOR
E Instruments International LLC
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AQ PRO Instruction & Operations Manual Version 1.05
Page 2 of 46
TABLE OF CONTENTS
CHAPTER 1 .................................................................................................................... 3
TECHNICAL SPECIFICATIONS & SAFETY GUIDELINES ............................................ 3
CHAPTER 2 .................................................................................................................... 5
INTRODUCTION ............................................................................................................. 5
CHAPTER 3 .................................................................................................................... 9
BASIC INSTRUMENT OPERATION ............................................................................... 9
CHAPTER 4 .................................................................................................................. 12
POWER REQUIREMENTS ........................................................................................... 12
CHAPTER 5 .................................................................................................................. 13
SENSORS -TECHNICAL .............................................................................................. 13
CHAPTER 6 .................................................................................................................. 18
AQ PRO SETUP ........................................................................................................... 18
CHAPTER 7 .................................................................................................................. 21
INTERNAL DATA STORAGE ....................................................................................... 21
CHAPTER 8 .................................................................................................................. 23
WIRELESS REMOTE PRINTER ................................................................................... 23
CHAPTER 9 .................................................................................................................. 25
ZERO & SPAN CALIBRATION ..................................................................................... 25
CHAPTER 10 ................................................................................................................ 33
AQ GAS SOFTWARE ................................................................................................... 33
CHAPTER 11 ................................................................................................................ 39
MAINTENANCE ............................................................................................................ 39
CHAPTER 12 ................................................................................................................ 41
AQ PRO OPTIONS ....................................................................................................... 41
CHAPTER 13 ................................................................................................................ 43
BASIC TROUBLESHOOTING ...................................................................................... 43
CHAPTER 14 ................................................................................................................ 45
REPLACEMENT PARTS .............................................................................................. 45
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CHAPTER 1
TECHNICAL SPECIFICATIONS & SAFETY GUIDELINES
AQ PRO - AIR QUALITY MONITOR
1. PHYSICAL:
Material: White ABS plastic case with Rubber Magnetic Boot
Dimensions (monitor): 8.6 x 3.9 x 2 inches: 220 x 100 x 52 mm (H x W x D)
Weight: (monitor): 1.6 lbs. / 0.725 kg
Shipping Dimensions & Weight (monitor & all accessories): 8 lbs. / 3.6 kg
20” x 19” x 9” / 50.8 cm x 48.2 cm x 22.8 cm
2. POWER:
12 Volt, 8 AH rechargeable Li-Ion battery pack
Operating time: 8 – 12 hours
110/240 VAC input, 12 V/2.5A fast charger
Charging time: 3 hours maximum
3. DISPLAY:
2.6” x 1.4” 128 x 64 graphic, chip on glass (white backlit) LCD display.
Rotating display depending on monitor case orientation
Small and large fonts, plus inverted background color for help messages
Battery condition & charger operation indicator
4. WIRELESS REMOTE PRINTER (Optional)
2” high resolution, high speed, graphic thermal printer, with charger, prints:
A. current set of data
B. stored data
C. periodic data printouts
D. calibration history and external messages
5. INTERNAL INSTRUMENT PUMP
Continuous Air sample pump: high quality diaphragm pump with long life motor
6. MEMORY STORAGE
1000 Internal memory storage tags, each tag stores one complete set of data
7. COMMUNICATIONS
Bluetooth wireless: Class 1 (100m)
USB Cable
8. SOFTWARE
AQ GAS™ Windows PC Software
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SENSOR
RANGE
RESOLUTION
ACCURACY
CARBON MONOXIDE
(CO)
Std Range
0 - 200 ppm
0.1 ppm
+/- 1 ppm of rdg,
+/- 0.2 ppm
OXYGEN (O2)
Std Range
0 – 25%
0.1%
0.1% Vol.
NITRIC OXIDE (NO)
Std. Range
0 - 250 ppm
0.1 ppm
+/- 2 ppm of rdg
NITROGEN DIOXIDE
(NO2)
Std. Range
0 - 20 ppm
0.1 ppm
+/- 0.5 ppm of rdg
SULFUR DIOXIDE (SO2)
Std. Range
0 - 20 ppm
0.1 ppm
+/- 0.5 ppm of rdg
HYDROGEN SULPHIDE
(H2S)
Std. Range
0 - 100 ppm
1 ppm
+/- 4 % of rdg,
+/- 0.5 ppm
FORMALDEHYDE
(CH2O)
Std. Range
0 - 10 ppm
1 ppb
2% ± 30 ppb
SENSOR
RANGE
RESOLUTION
ACCURACY
CARBON DIOXIDE
(CO2)
Std
Range
0 – 5000 ppm
1 ppm
2% of Rdg.
+ 10 ppm
SENSOR
RANGE
RESOLUTION
Min Detection
ACCURACY
VOCs
Std Range
0 – 20 ppm
(0-46 mg/m3)
1 ppb
(2.3 µg/m3)
5 ppb
10% of Rdg.
+ 20 ppb
SENSOR
RANGE
RESOLUTION
ACCURACY
Temperature Type K (T1)
0 – 2000 ºF
(0 – 1100ºC)
0.1 ºF
(0.1 ºC)
+/- 0.5 ºC 0-100ºC
+/- 5% >100ºC
Ambient
Temperature
-40 – 257 ºF
(-40 – 125 ºC)
0.1 ºF
(0.1 ºC)
+/- 0.4 ºC (0-60 C)
Barometric Pressure
260 – 1260 mbar
1 mbar
+/- 2 mbar
Relative Humidity
0 -100 %
0.1%
+/- 2% RH
Pressure
+/- 80 mbar
0.1 mbar
+/- 2 mbar
Air Velocity
0 – 300 ft/sec
1 ft/sec
SENSORS
1. AIR QUALITY SENSORS – ELECTROCHEMICAL
*Note: All Accuracies indicated above are under Laboratory Conditions
2. AIR QUALITY SENSORS – NON-DISPERSIVE INFRARED (NDIR) SENSORS
3. AIR QUALITY SENSORS – PHOTO IONIZATION DETECTOR (PID) SENSORS
4. OTHER SENSORS
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NOTE: Please take special care when performing Span Calibration of the
monitor. You cannot revert back to the factory setting after any adjustments!
NOTE: CO2 should ALWAYS be Calibrated or Zeroed with a Cylinder of ZERO
AIR. Do Not Use Ambient Air for CO2 sensor calibration.
MODEL AQ PRO – SAFETY GUIDELINES
This section provides general rules which must be followed for product safety, avoiding
personal injury, damage to equipment and preserving the manufacturer’s warranty.
Please take care to carefully observe the following instructions.
A. PRODUCT SAFETY INSTRUCTIONS:
Do not operate the instrument outside of the parameters specified in the
technical specifications
Do not use or store the instrument together with any solvents
Do not block the two (2) exhaust ports in the back of the instrument
Do not expose the monitor to extreme hot or cold temperatures outside of
the stated range in this manual
Do not abuse the charger cord. Do not use power cord for carrying,
pulling. Keep cord away from heat, oil, sharp edges, or moving parts.
Damaged or entangled cords can increase risk of electric shock
Only use the supplied, appropriate AC Charger
If the monitor enclosure is ever unscrewed and taken apart, avoid over-
tightening the screws that hold the two main enclosure pieces together.
Do not store or operate in dusty, dirty areas
Always use the monitor with care and use the instrument properly
Do not use force when disconnecting and reconnecting the Black external
Temp, RH and Pressure Sensor (see photo below)
Do not use instrument in the rain or high moisture areas to prevent water
droplets on the black external Temp, RH, and Pressure Sensor.
Remember to have the monitor checked and calibrated at least once a
year to ensure sensor accuracy and compliance with existing standards
DO NOT LIFT OR HANDLE THE INSTRUMENT BY THE BLACK
EXTERNAL TEMP, RH, PRESSURE SENSOR HOUSING! See photo
below
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B. ELECTROMAGNETIC COMPATIBLITY
Complies with EN61326-1, Portable Equipment
The E Instruments AQ PRO Indoor Air Quality Monitor is a battery operated
Portable device designed to be used by a qualified engineer/technician to make
measurements in buildings and residential facilities. For long-term testing, you may
operate the unit connected to the supplied charger by carefully following the product
safety instructions in Section A above.
C. ESD Protection
In extreme cases or abnormal applications, Electrostatic Discharge can
potentially cause serious and immediate damage to the electronic circuits of the
instrument.
D. BATTERY DISPOSAL & RECYCLING
Recycle all applicable material properly. Take faulty/depleted batteries to
proper collection/recycling centers
Dispose of batteries and the monitor according to statutory regulations.
Do not dispose of with regular household items. After the monitor’s useful
life, please return to your local authorized E Instruments’ distributor or
send back to E Instruments directly. We will ensure that it is disposed of
in an environmentally friendly manner
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CHAPTER 2
INTRODUCTION
A. UNPACKING THE INSTRUMENT & PARTS IDENTIFICATION
E INSTRUMENTS AQ PRO kits (excluding AQ Pro-1) include as standard equipment:
• IAQ Monitor Model AQ PRO with CO2, Temp, %RH, Dew point Temp, WBT,
Barometric Pressure, Differential Pressure and Differential Temperature
• Internal Continuous Sampling Pump
• Battery charger / AC adaptor for the monitor
• USB Thumb Drive includes:
• AQ GAS TM Software for Windows TM
• Instruction Manual
• USB Cable for connecting to a PC
• Vinyl Carrying Case
• Internal Wireless Bluetooth
• Bluetooth Dongle for PC
• Calibration Certificate
C. PROPER SAFE USE
1. Follow all the instructions in the AQ Pro manual.
2. Do not block the two (2) exhaust ports in the back of the instrument housing.
3. Do not expose the monitor to extreme temperatures outside the stated range
4. Do not store or operate in dusty, dirty areas
5. Do not use instruments in the rain or high moisture areas to prevent water
droplets on the external Temp, RH, and Pressure Sensor.
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LIST OF ABBREVIATIONS
PARAMETERS
CO2 Carbon Dioxide – NDIR measurement
CO Carbon Monoxide
Ta Ambient (room) Air Temperature
RH Percentage of Relative Humidity
DPt Dew Point Temperature
WBT Wet Bulb Temperature
O2 Oxygen
VOC Volatile Organic Compounds
BP Barometric Pressure
H2S Hydrogen Sulfide
FMH Formaldehyde
NO Nitric Oxide
NO2 Nitrogen Dioxide
NOX Oxides of Nitrogen
SO2 Sulfur Dioxide
VEL Air / Gas Velocity (measurement with optional pitot tube)
∆P Differential Pressure (with Velocity Probe turned OFF)
T1 Thermocouple Type K Temperature (T1 Input)
BAT Battery Life / Voltage
NA Parameter Not Available
UNITS
PPM Parts (of pollutant) per million
PPB Parts (of pollutant) per billion
mg/m3 Milligrams per Cubic meter
µg/m3 Micrograms per Cubic meter
°F Temperature Measurement in Fahrenheit
°C Temperature Measurement in Celsius
"WC Inches of water (pressure measurement)
mmHg Millimeters of Mercury (pressure measurement)
"Hg Inches of Mercury (pressure measurement)
PSI Pounds per Square Inch (pressure measurement)
mmWC Millimeters of water (pressure measurement)
kPa KiloPascals (pressure measurement)
mbar Millibars (pressure measurement)
FPS Feet per second (gas / air velocity measurement)
MPS Meters per second (gas / air velocity measurement)
CMM Cubic meters per minute (gas / air velocity measurement)
CFM Cubic feet per minute (gas / air velocity measurement)
V Voltage (battery)
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SETUP
Controls all customization parameters, such as measurement
units, for the monitor
CALIB
Controls calibration settings and zeroing of the monitor’s
sensors.
STORE
Controls operation of the monitor’s internal data storage
PRINT
Executes print commands for the monitor’s optional remote
Bluetooth printer
CHAPTER 3
BASIC INSTRUMENT OPERATION
The AQ PRO is operated by the 9 button keyboard located on the front of the monitor.
The POWER key turns the instrument on and off.
The MEASURE key shows the currently measured parameters.
Displays the monitor’s currently measured data in either of two (2) fonts:
A. Small fonts (all data displayed simultaneously plus range indicated, battery
condition and time)
B. Large fonts (four data parameters displayed simultaneously)
Note: The AQ Pro allows the user to ZOOM in and out of the screen by changing
from Small to Large Fonts using the MEASURE key. Press Measure key again to
zoom back out.
Four (4) keys will bring up separate Menus: SETUP, CALIB, STORE, & PRINT.
The menus are navigated with the UP, DOWN, LEFT, RIGHT, & OK keys.
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CO2: 920PPM
CO: 0PPM
Ta: 79.1°F
RH: 46.9%
DPt:57.0°F ∆P: 0.0mb
BP: 1012mb VOC: 0PPB
_____________________
Sampling 12:45:00
NOTE: Depending on the options
enabled for your AQ PRO some of the
entries in one or more of the displays
shown above will be blank if that
option is not available.
APR 1 ‘14 12:45:00
Temperature Units: F
Measure Units: PPM
Pressure Units: inWC
Pumps: AUTO 750cc/m
Velocity Probe: OFF
Velocity Units: FPS
Duct Size: 0 in2
Display Contrast: 24
Baudrate: 115 kbps
Version: 1.02Li
Battery Charger Connected
Battery Empty
Battery Full
INSTRUMENT OPERATION OVERVIEW
AQ PRO STARTING INSTRUCTIONS
1. Turn the AQ Pro on by pressing the POWER key. The instrument’s internal
pump will immediately turn on and the E INSTRUMENTS logo will appear. The
instrument will begin to draw in air from the center SAMPLE IN inlet “A” at the
bottom of the unit.
2. If applicable, attach the optional probe and sampling line to the monitor.
3. Press the MEASURE key to view the Main Measuring Screen including
ambient temperature, barometric pressure, relative humidity and dew point. The
toxic gas readings you selected in your kit are also displayed: CO, CO
(FMH), NO2, O2, SO2, H2S and/or VOCs.
4. At initial startup, allow the CO2 sensor up to 1 minute to warm up and stabilize.
The MEASURE key allows the user to toggle/zoom
between a small font and a large font screen.
The battery icon is displayed in the middle of the bottom
line of the display. Its condition is marked by the shaded
fraction of the icon. If the unit is powered by the battery
charger a small “plug” icon will replace the battery icon.
NOTE: When connecting the battery charger to the
monitor make sure that the “plug” icon appears on the
MEASURE screen. This ensures a proper power
connection and charging of the batteries.
5. If you are using the monitor for the first time, press the
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SETUP key to set the appropriate parameters
(i.e.: measurement units) for your application. See
Chapter 5 for an explanation of each parameter.
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, NO, CH2O
2
AQ PRO Instruction & Operations Manual Version 1.05
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6. All sensor readings shown on the screen indicate ambient measurements. To
ZERO the gas sensors, please see Calibration Chapter 9 of this manual.
7. To obtain a printout of the data displayed, press the PRINT key.
The cursor (reverse color) will point to:
Print Test Record
Press the OK key to execute a printout on the AQ Pro’s optional Bluetooth
remote printer.
8. Measured data can be stored in the monitor’s internal memory. Please refer to
Chapter 7 for more details about data storage.
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Battery Charger
Battery Full
Battery Empty
CHAPTER 4
POWER REQUIREMENTS
The E Instruments AQ PRO Indoor Air Quality Monitor is a battery operated
Portable device designed to be operated by a qualified engineer/technician to make
measurements in buildings and residential facilities. For long-term testing please
carefully follow the product safety instructions in Chapter 1.
Power is supplied by a Li-Ion rechargeable battery pack. The battery pack will supply
power to the monitor for about at least 8 hours of continuous operation.
A 110 – 240 Volt AC charger having a 12 Volt DC / 2.5A output is supplied with the
instrument. The battery charger will fully charge the battery pack in three hours.
You can check the condition of the batteries at any time:
1. By pressing the MEASURE key, (small font screen) and observing the battery
icon, located at the bottom of the display.
2. By pressing the MEASURE key, (large font screen), the user can scroll all
the way to the end using the DOWN arrow key to observe the battery life
shown in Voltage. When the unit is operating on its internal batteries, the
voltage displayed will vary from an initial 8.0 to 8.4 volts (fully charged) dropping
slowly to approximately 7 volts (batteries nearly empty). When the battery voltage
drops to 7.1 volts a “low battery” warning will appear on the display. Within a few
minutes later the instrument will automatically turn off, to preserve the remaining
battery power for the sensor bias voltages.
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SENSOR LIST:
CO2
CO
VOC
CH2O
NO
NO2
SO
2
H2S
O
2
CHAPTER 5
SENSORS -TECHNICAL
The great versatility of the AQ Pro Air Quality monitor is partly due to the large number
of sensors available within a single monitor.
These sensors are primarily gas sensors and can be grouped into four categories based
on their principle of operation:
1. Up to two (2) electrochemical gas sensors
2. One (1) NDIR (infrared gas sensors) – CO2
3. One (1) Photo ionization detector (PID gas sensor) - VOC
4. Non-gas sensors (Temperature, Humidity, Pressure, Velocity, and
Barometric pressure) sensors
The main section of the monitor houses all the electrochemical, NDIR, and PID gas
sensors, battery pack, and PC board. On the bottom of the unit, there is a black
external sampling system for Ambient Temperature, Relative Humidity, and Barometric
Pressure.
The figure below shows the internal manifold of the gas sensors inside the unit:
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1. ELECTROCHEMICAL SENSORS
All electrochemical sensors are mounted on fitted socket fittings for easy installation and
removal.
The electrochemical sensors are described below:
A. Nitrogen Dioxide sensor (NO2)
This is a three electrode sensor that responds to nitrogen dioxide gas. Nitrogen dioxide
is a “sticky” gas and this sensor’s response is usually the slowest of all sensors.
E. Sulfur Dioxide sensor (SO2)
It is a three electrode sensor that responds to sulfur dioxide gas. It is equipped with an
inboard filter to remove interference from H2S gas and other acidic gases.
C. Nitric Oxide sensor (NO sensor)
This is also a three electrode sensor that responds to nitric oxide. It is equipped with an
inboard filter to remove any interference from other acidic gases.
The nitric oxide sensor requires a constant bias-voltage for proper operation. This is
supplied by the monitor’s battery. If the battery voltage drops below a certain value the
monitor will turn off automatically to maintain the sensor bias. If, however, the battery
voltage further drops to near zero, one must wait 24 hours after connecting the battery
charger, for the sensor bias to recover.
D. Oxygen sensor (O2 sensor)
This sensor measures the oxygen concentration in the sample. It is a two-electrode
electrochemical cell. It has a silver cathode and a lead anode. Oxygen diffuses through
a tiny hole and reacts with the lead anode. The reaction produces an electric current.
The unit software linearizes the current vs. oxygen response. The cell becomes
exhausted when all the lead is consumed.
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E. Hydrogen Sulfide sensor. (H2S)
This is a 4-series three-electrode micro sensor with low methanol interference. It
measures the concentration of hydrogen sulfide, which is a highly toxic gas. Special
precautions must be taken during calibration.
F. Carbon Monoxide sensor (CO)
This is also a three electrode sensor that responds to carbon monoxide. It is equipped
with an inboard filter to remove any interference from other acidic gases.
The optional High Range CO sensor has four electrodes. One measures the
concentration of carbon monoxide gas and the other the concentration of any interfering
hydrogen gas (It is hydrogen compensated).
G. Formaldehyde (CH2O)
This is also a three electrode sensor that responds to formaldehyde. It is equipped with
an inboard filter to remove any interference from other acidic gases.
2. NDIR (INFRARED) SENSOR (CO2)
A non-dispersive infrared (or NDIR) sensor is a simple spectroscopic device most
commonly used to measure CO2 in indoor air quality applications. The main
components are an infrared source (lamp), a sample chamber or light tube, a
wavelength sample chamber, and the CO2 gas concentration is measured electrooptically by its absorption of a specific wavelength in the infrared (IR).
The AQ Pro Air Quality Monitor is equipped with one standard NDIR infrared sensor
capable of CO2 measurement (standard range: 0 – 5000 ppm). This infrared sensor
can be substituted for higher CO2 ranges upon special request.
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GAS
RANGE
ACCURACY
CARBON DIOXIDE
(CO2)
0 – 5000 ppm
2% of reading
+ 10 ppm
GAS
RANGE
ACCURACY
VOCs*
0 – 20 ppm
+ 10 % of reading
The NDIR options have the following specifications:
3. PHOTO IONIZATION DETECTOR (PID) - VOCs
Photo ionization detectors are the most common method to measure volatile organic
compounds (VOCs) and other gases in indoor air quality in concentrations in parts per
billion (PPB) and parts per million (PPM).
The PID options have the following specifications:
*VOC sensor will not measure Formaldehyde. The ionization potential of the sensor is outside of the VOC sensor
range. If you need Formaldehyde, you need to use the direct CH2O sensor.
4. NON-GAS SENSORS
A. Ambient Temperature sensor
This is a solid state sensor located on the front panel of the monitor. The
ambient temperature is displayed on the MEASURE screen in either °F or °C.
The dew point is calculated from the ambient temperature and relative humidity.
The dew point is displayed on the Small and Large Font MEASURE screens as
DPt.
B. Humidity sensor
This is a solid state sensor located on the front panel of the monitor. The
relative humidity is displayed on the MEASURE screen in %RH (% Relative
Humidity). The Wet Bulb is calculated from the ambient temperature, relative
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humidity, and barometric pressure. The wet bulb is displayed on the Large
Font MEASURE screen only as WBT.
C. Barometric Pressure sensor
This is a solid state sensor located at the front panel of the monitor. The
barometric pressure is displayed on the Small and Large Font MEASURE
screens as BP.
D. External temperature sensor (T1)
The thermocouple is located at the bottom right side of the monitor. It can be
used with any optional or separate Type K thermocouple probe and/or wire.
The T1 temperature measurements are displayed on the Large Font
MEASURE screen only as T1.
E. Differential Pressure / Air Velocity sensor.
If the monitor comes with the Differential Pressure option and/or the air velocity
option (optional separate L-type Pitot tube and pressure tubing), the internal
pressure sensor is a very low range pressure sensor. The Velocity
measurements are displayed on the MEASURE screen only as VEL.
Differential Pressure is displayed on the MEASURE screen only as ∆P.
F. Connecting Differential Pressure Hoses:
Connect Metal Hose Connections to either P+ or P- Connection as shown.
P+ only will give you Positive pressure; P- only will give you Negative
pressure. Plug in both as shown below for Differential Pressure. All single &
differential readings are shown on main MEASURE screen as ∆P.
SINGLE PRESSURE DIFFERENTIAL PRESSURE
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APR 1 ‘14 12:45:00
Temperature Units: F
Measure Units: PPM
Pressure Units: mbar
Pumps: AUTO 750cc/m
Velocity Probe: OFF
Velocity Units: FPS
Duct Size: 0 in2
Display Contrast: 24
Baudrate: 115 kbps
Version: 1.02Li
CHAPTER 6
AQ PRO SETUP
The SETUP MENU allows the operator to change the instrument’s parameters.
Every parameter listed on the SETUP MENU screen can be changed as follows:
a. Use the UP / DOWN keys to move the highlighted line to the parameter
you wish to change.
b. Press OK to edit the value. The parameter you have chosen will become
highlighted on the right side of the screen. This indicates that you are in edit
mode.
c. Use the UP / DOWN keys until the desired value of the selected parameter
appears on the display.
d. Press the OK key to execute the change.
A more detailed explanation of each parameter follows:
1) DATE & TIME: The monitor’s internal clock is displayed in the format month-dayyear, hour-minute-second. Hours are always displayed using a 24-hour clock
format.
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2) TEMPERATURE UNITS: The UP / DOWN keys toggle between °F (Fahrenheit) and
°C (Celsius). The T1 temperature reading and ambient temperature will be
displayed, printed, and saved in the selected units.
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3) GAS MEASURING UNITS: When the cursor is blinking on this line, you can select
any of the following units of measurement for the toxic gas sensors:
PPM : Parts per million (volumetric)
PPB : Parts per billion (volumetric)
MGM: Milligrams per cubic meter (weight)
µGM: Micrograms per cubic meter (weight)
Note: Formaldehyde and VOCs are normally read in PPB (parts per billion)
4) PRESSURE UNITS: Pressure measurements can be shown in millibar (mbar),
inches of water (inWC), millimeters of water (mmWC), millimeters of mercury
(mmHG), inches of mercury (inHG), pounds per square inch (psi) or kilopascal
(kPa).
1 mbar = 0.10 kPa = 0.40 inWC = 10.2 mmWC = 12.95 inHg = 0.75 mmHg = 1.45 PSI
5) VELOCITY UNITS: (Velocity Option) Select between feet per second (FPS), meters
per second (MPS), cubic feet per minute (CFM), or cubic meter per minute (CMM).
AIR VELOCITY AND DIFFERENTIAL PRESSURE CAN NOT BE MEASURED
SIMULTANEOUSLY. USER MUST CHOOSE ONE OR THE OTHER.
To change the selection, hit the SETUP key. Using the DOWN arrow key, scroll
Down to VELOCITY PROBE and hit OK. The OFF/ON selection will be highlighted.
Use the Up & Down arrow keys to change the selection from OFF to ON or vice versa.
With the Velocity Probe Selection OFF, the AQ Pro will measure Differential Pressure
(∆P) automatically. With the Velocity Probe Selection ON, the AQ Pro will measure Air
Velocity (VEL) automatically. When you have your selection chosen, hit the OK button
and the entire Velocity Probe will be highlighted again. Hit the MEASURE Button to get
back to the Main Measurement screen once you are complete.
6) DUCT SIZE: (Velocity Option). Estimate the cross-section area of your Ducts in
square inches (in2) and set this value to obtain automatic & accurate Air Flow
measurements in CFM or CMM.
NOTE: When using the Velocity Feature on the AQ Pro it is recommended to ZERO
the readings BEFORE using the Pitot tube to ensure proper Velocity measurements.
See Chapter 9 for instructions on Zeroing the AQ Pro. (Zero Gas Sensors)
Connecting Pitot Tube: In air conditioning, heating and ventilating work, it is helpful to
understand the techniques used to determine air velocity. In this field, air velocity
(distance traveled per unit of time) is usually expressed in feet per minute (FPM). By
multiplying air velocity by the cross section area of a duct, you can determine the air
volume flowing past a point in the duct per unit of time. Volume flow is usually measured
in cubic feet per minute (CFM). To make Air Velocity measurements using the AQ Pro,
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you will need to use the Optional 12” Pitot tube. Follow Steps #5 & #6 above to (1) turn
the Velocity Probe option ON (VEL will appear on the unit’s main screen) and (2) set up
your Duct Size. Connect the supplied hoses from the Pitot tube to the (-) and/or (+)
PRESSURE connections on the bottom of the AQ Pro.
7) PUMP: Pump status is displayed:
a) AUTO - Automatic sample mode is selected
b) OFF – The internal Pump is turned off.
8) DISPLAY CONTRAST: Select the best value for viewing the LCD screen.
9) BAUDRATE: The communication speed for both the USB port and the Bluetooth
connection is set here. The default setting is 115 kbps.
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Store Current Buffer
Select Buffer
Start Average Test
Start Periodic Store
Select Interval: 1m
Review Buffer
Name Buffers
Erase Buffers
00: TAG#00
CHAPTER 7
INTERNAL DATA STORAGE
The STORE MENU allows the operator to store data and manage the internal storage
tags.
The AQ Pro has 1000 internal storage tags/memory spots. Each tag stores one
complete set of air quality data. There are two ways to store air quality data to the
monitor’s buffer. You can either store data by selecting the option STORE CURRENT
DATA after pressing the STORE key, or alternatively you can make use of the monitor’s
capability of storing data automatically on a periodic basis. You can set the time period
between data storage. The STORAGE MENU shows the relevant display lines for the
storage options.
1. STORE CURRENT BUFFER: The monitor will store one set of data into the tag
currently selected. The index number and the name of this tag appear at the
bottom of the screen.
2. SELECT BUFFER: Selecting this item will display an index of the monitor’s 1000
internal storage tags. Tags that are used have an icon next to their index
number. The selected storage tag is indicated by the reverse color line. When
data is stored, this pointer will automatically advance to the next available tag. If
you want to store data in a different location, use the UP, DOWN, & OK keys to
select a new tag. As you scroll up and down, tags containing data show their
date and time at the bottom of the display. Empty tags show the word empty.
3. START AVERAGE TEST: This will begin a period of data averaging, with the
average values stored periodically in successive memory tags. The interval
between each storage cycle is displayed below and can be set by the user. Once
enabled, this line will read: STOP AVERAGE TEST.
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*** NAME BUFFERS ***
Starting Tag: 00
Ending Tag: 00
Name:xxxxxxxxxxxxxxxx
1 2 3 4 5 6 7 8 9 0 ◄
A B C D E F G H sym ►
I J K L M N O P shift
Q R S T U V W X Y Z
4. START PERIODIC: This will turn on the periodic store function. In this mode, the
unit will continuously store data at an interval displayed on the next line. Once
enabled, this line will read: STOP PERIODIC.
5. SELECT INTERVAL: The time between each store is set here. This can range
from 10 seconds to 60 minutes.
6. REVIEW BUFFER: This choice allows you to view previously saved data. Press
OK. The display will switch to the data screen, with the data in the first tag
displayed. The time and date when the data was saved will appear at the bottom
of the display. Use the UP / DOWN keys to scroll through the tags.
7. NAME BUFFERS: This choice will take you to
another screen where you can rename one or
more tags. This is useful if you use several tags
together to form a test series. Select the starting
test index with the UP / DOWN / LEFT / RIGHT
keys and press OK. Next, select the ending test
index. The cursor will move to the first character
of the first tag’s name, and the alphanumeric
keyboard will appear. Use the UP / DOWN /
LEFT / RIGHT keys to navigate around the keyboard, and press OK to select the
letter or number. For lower-case letters, highlight shift and press OK, for
symbols, highlight sym and press OK. The arrows in the corner will move the
cursor forward or backward through the tag’s name.
8. ERASE BUFFER: This option is used to erase stored data. Data that has been
stored in the monitor’s memory will be retained even after the instrument has
been shut off and its batteries removed. To erase the contents of a specific tag,
use the UP / DOWN keys to move the arrow to the desired tag. As you scroll up
and down, tags containing data show their date and time at the bottom of the
display. Empty tags show the word empty. If you wish to erase all 1000 of the
monitor’s stored data, move the arrow to the entry ALL TAGS and press OK.
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Print Test Record
Start Test Log
Log Interval: 60s
Print Buffer
Configure Record
Edit Customer Name
Calibration Record
Paper Feed On/Off
Mobile Printer...
Seri al # : 00 0000
Comp any Name
TEST RECORD
AUG 1 ‘14 12:45:00
CO2: XX. X %
CO: XXX X PP M
T am bien t: XXX ºF
RH: XX. X %
DP t: X XX ºF
WBT: XXX X ºF
BP: XXX X ps i
VOC: XX X PP M
* WIRELESS PRINTERS *
Scan for printers
Press OK to search
* WIRELESS PRINTERS *
Device Found
Press OK to Connect
Device 1:001122334455
* WIRELESS PRINTERS *
Device Connected
Press OK to Continue
Device 1:001122334455
CHAPTER 8
WIRELESS REMOTE PRINTER
The AQ Pro uses an optional wireless Bluetooth remote printer.
The printer is powered by a rechargeable battery. An AC charger
is supplied with the printer.
First you must turn the printer on. Then press PRINT to scan and
connect with your wireless printer to establish communications
between the monitor and the printer.
When you have connected successfully the printer’s green status light will turn on.
Pressing the PRINT key will now display the PRINT MENU.
The PRINT MENU allows the user to print test records.
PRINT TEST RECORD: This option will print a test record of
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the current air quality parameters.
PRINT TEST LOG: This option begins a log of the following air
quality parameters: CO2, Temperature, %RH, Wet Bulb, Dew
Point, Barometric Pressure, Carbon Monoxide, VOCs, etc.
LOG INTERVAL: This selects the interval between each log entry. The interval can be
set between 1 and 60 seconds.
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** EDIT HEADER INFO *
E INSTRUMENT AQ PRO
1 2 3 4 5 6 7 8 9 0 ◄
A B C D E F G H sym ►
I J K L M N O P shift
Q R S T U V W X Y Z
PRINT BUFFER: This option is used to print data stored in the monitor’s memory. Each
line corresponds to one storage tag. Tags containing data show an icon next to the
index number. When you scroll up and down, the date (mm/dd) and time (hh/mm) when
the data was stored appear at the bottom; empty tags show the word “empty”. To print
the contents of a specific tag, use the UP / DOWN keys to move the arrow to the
desired tag and press OK. If you wish to print the entire monitor’s stored data in
sequence, move the arrow to the entry ALL TAGS and press OK.
CONFIGURE RECORD: This option allows the user to add, delete, or change the order
of the parameters that appear on the paper print out.
EDIT CUSTOMER NAME: This will display a screen
where you can change the information printed at the top of
each printout. Usually the customer’s name or the
operator’s name appears here. To edit this information,
use the UP / DOWN / LEFT / RIGHT keys to navigate
around the keyboard, and press OK to select the letter or
number. For lower-case letters, highlight shift and press
OK, for symbols, highlight sym and press OK. The arrows
in the corner will move the cursor forward or backward
through the name.
CALIBRATION RECORD: This option will print a record of each sensor’s last
calibration, including the date of calibration and span gas value used.
PAPER FEED: This toggles the printer’s motor on and off, advancing the paper out the
top of the printer as needed. The motor will not turn on if there is no paper present.
MOBILE PRINTER: The WIRELESS PRINTERS screen will appear. You can
disconnect your current Bluetooth connection and connect to another printer in range.
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**** CALIBRATION ****
Zero Gas Sensors
Zero CO2 Sensor
Zero Thermocouples
Zero Errors
Zero Time: 60sec
Span Time: 120sec
** Span Lockout **
Sensor History
Span CO: xxxx PPM
Span H2: xxxx PPM
Span CO2: xxxx PPM
Span NO: xxxx PPM
Span NO2: xxxx PPM
Span SO2: xxxx PPM
Span H2S: xxxx PPM
Span FMH: xxxx PPB
Span VOC: xxxx PPB
Span Velocity: xx "
Span ∆P: xx "
Span AmbT: xx.x C
Span BP: xxxx mbar
Span RH: xx.x %
Cal Thermcple :xxxF
NOTE: Please take special care when performing Calibration of the monitor.
You cannot revert back to the factory setting after any adjustments!
NOTE: CO2 should ALWAYS be Span Calibrated or Zeroed with a Cylinder of
ZERO AIR. Do Not Use Ambient Air for CO2 sensor calibration.
CHAPTER 9
ZERO & SPAN CALIBRATION
Every instrument must occasionally be tested against some known value or standard in order to
make sure that its accuracy has not deteriorated. If the instrument is reading outside of the
stated accuracies in this manual, the unit should be calibrated by following the procedures
described in this chapter.
This chapter will contain all of the information on calibrating and adjusting the AQ Pro IAQ
Monitor. The term Span Calibration means comparing the AQ Pro’s readings to a standard
concentration (i.e.: calibrated gas bottles) and adjusting/changing the AQ Pro’s individual
sensor’s readings to match the standard concentration for the most accurate measurements.
The term ZERO calibration refers to the user’s ability to calibrate each sensor with zero
concentration of the targeted gas. See Chapter 11, Maintenance, for recommended frequencies
of each procedure.
If the unit is returned to E Instruments for Span Calibration, the unit will be shipped back after
Calibration with a new Calibration Certificate valid for one (1) year. If the unit is Span Calibrated
in the field, the original calibration certificate is no longer valid.
The CALIBRATION MENU lets you set span calibration
values for each sensor and performs all sensor
calibrations. The CALIBRATION MENU is shown below.
A brief explanation of the parameters shown follows
below:
ZERO GAS SENSORS: This will set the zero point of
CO, NO, NO2, SO2, H2S, CH2O, O2, VOCs, Pressure &
Velocity values.
ZERO CO2 SENSOR: This will set the zero point of CO2.
ZERO THERMOCOUPLE: This calibrates the external
thermocouple input (T1) to ambient temperature.
ZERO ERRORS: This will display a list of sensors that
were out of the monitor’s acceptable range during the
last zero countdown.
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ZERO TIME: This is the countdown time for the zero procedure. The zero cycle time
should set at 20-60 seconds.
SPAN TIME: When carrying out a span calibration, you must introduce the span gas for
an appropriate amount of time before the monitor executes the span calibration. This
setting, which is the same for all sensors, controls this time interval. The span time is
indicated in seconds.
SPAN LOCKOUT: This controls access to the remaining span calibration menu
options. Span lockout prevents accidental or mistaken calibrations. Span lockout is
enabled and disabled by entering a 4-digit code. See section D below for the code.
SENSOR HISTORY: The date that each sensor was installed is displayed, along with
the date the sensor was last calibrated and the span gas concentration used.
SPAN XXXX: The remaining lines of the CALIBRATION MENU are used for carrying
out span calibrations of the CO, CO2, NO, NO2, SO2, O
S, FMH, and VOCs sensors.
2, H2
For detailed use of these settings, please refer below.
A. ZEROING THE AQ PRO
Select CALIB key to go into Calibration Mode
There are two (2) methods to Field-Calibrate the GAS & CO2 Sensors on the AQ Pro.
1. ZERO Gas Sensors using the ZERO AIR Cylinder (to zero all gas sensors)
2. Using Outside fresh Air to Calibrate the gas sensors (except the CO2 sensor)
1. ZEROing ALL GAS Sensors using a certified Cylinder of ZERO AIR
If you have a gas cylinder/bottle of ZERO AIR you can use this for Zeroing ALL of the
gas sensors in the AQ Pro. If you do not have this cylinder, please contact
E Instruments to purchase our optional Calibration Kit consisting of ZERO AIR &
regulator for proper calibration of the AQ Pro (part #: AQCAL).
ZERO GAS SENSORS: This will set the zero point of CO, NO, CH2O, NO2, SO2, H2S,
O2, and VOCs values. Connect Cylinder to the “A” inlet connection on the bottom of the
AQ Pro using the optional accessories included in the CALIBATION KIT (Part #:
AQCAL). See CALIBRATION APPARATUS section below for how to connect.
Have the cursor (reverse color) point to the line:
Zero Gas Sensors
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Press the OK key to execute a zero cycle of all the gas sensors. This procedure should
last 60 seconds.
At the end of the zero period, the AQ Pro reads the output of all gas sensors (with the
exception of the CO2 sensor) and sets them all to zero, and the Oxygen (O2) that it sets
to 20.9%.
If no error messages appear at the end of the countdown, proceed with your
measurements.
ZERO CO2: This will set the zero point of CO2. You must use cylinder of ZERO AIR
for CO2 ZERO CALIBRATION. Connect Cylinder to the “A” inlet connection on the
bottom of the AQ Pro using the optional accessories included in the CALIBATION KIT
(Part #: AQCAL). See CALIBRATION APPARATUS section below for how to connect.
Scroll down using down arrow key and have the cursor (reverse color) point to
the line
Zero CO2 Sensors
Press the OK key to execute a zero cycle of the CO2 Sensor. The monitor will count
down from the Zero Time setting as explained above. The recommended Zero Time for
the CO2 sensor is 60 seconds.
If no error messages appear at the end of the countdown, proceed with your
measurements.
2. ZEROing Sensors using OUTDOOR FRESH AIR (with the exception of CO2)
If you are not using bottled ZERO AIR, it is important to select a location where the
ambient environment of the monitor is clean from traces of carbon monoxide or other
toxic gases. The user should be at least 20-30 feet (6-10 meters) away from any
buildings, parking lots, highways, and any other possible exhaust sources. If in doubt of
the ambient air, please use the ZERO AIR cylinder.
When you turn the instrument on in clean ambient air, wait at least one (1) minute to
allow the monitor to warm up before carrying out the zero calibration.
ZERO GAS SENSORS: This will set the zero point of CO, NO, CH2O, NO2, SO2, O2,
H2S, and VOCs values based on the clean ambient conditions.
Have the cursor (reverse color) point to the line:
Zero Gas Sensors
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NOTE: You must always span calibrate the instrument when a sensor is replaced.
Press the OK key to execute a zero cycle of all the gas sensors. This procedure should
last 60 seconds.
At the end of the zero period the AQ Pro reads the output of all gas sensors (with the
exception of the CO2 sensor) and sets them all to zero, with the exception of the
Oxygen (O2) that it sets to 20.9%.
If no error messages appear at the end of the countdown, proceed with your
measurements.
ZERO THERMOCOUPLE: This calibrates the one external thermocouple input (T1) to
ambient temperature.
Be sure the Thermocouples being testing are at room temperature before Calibrating
To start the zero procedure, press the CALIB key and select ZERO Thermocouples.
B. SPAN CALIBRATION
E Instruments recommends performing a span calibration of the instrument once every
6 months for maximum accuracy, or at a minimum of once per year. The parameters
that require a span calibration are: carbon monoxide, carbon dioxide, nitric oxide,
nitrogen dioxide, sulfur dioxide, hydrogen sulfide, oxygen, formaldehyde, and VOCs.
You can carry out all span calibrations in sequence.
Span calibration using your own gas
If you wish to use your own span gas to perform span calibrations you must take certain
precautions and follow the instructions below carefully in order to calibrate the sensors
properly.
Notice that you will need a number of certified gas cylinders. Make sure that you use a
bypass flow meter as shown below in the CALIBRATION APPARATUS section, in order
to supply an adequate flow of span gas without developing excessive or insufficient
pressure on the sensors.
Make sure the concentration of the calibration gas is within the range of each sensor.
Do not use gas that will over-range the sensor.
The CO span gas can be in the range of 30 - 200 PPM, 2% accuracy with balanced
nitrogen, preferably.
The NO span gas can be in the range of 10 - 200 PPM, 2% accuracy with balanced
nitrogen, required.
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The NO2 span gas can be in the range of 10 - 20 PPM, 2% accuracy with balanced
nitrogen or air.
The SO2 span gas can be in the range of 10 - 20 PPM, 2% accuracy, with balanced
nitrogen, preferably.
The VOC (Isobutylene) span gas can be in the range of 0 - 10 PPM, 2% accuracy with
balanced air.
The CH2O (Formaldehyde) span gas can be in the range of 0 - 2 PPM, with balance
nitrogen, preferably.
The H2S span gas can be in the range of 10 - 20 PPM, 2% accuracy, with balance
nitrogen, preferably.
The CO2 span gas can be in the range of 2500 PPM, 2% accuracy, with balance air
Make sure the concentration of the calibration gas is within the range of each
sensor. Do not use gas that could over-range the sensor.
For greatest accuracy, it is recommended that you use a span gas value close to
the gas concentration you expect to measure.
C. CALIBRATION APPARATUS
During calibration an adequate flow of span gas must be supplied without developing
excessive pressure on the sensors. A compressed cylinder of span gas must be
equipped with a primary pressure regulator. Connect the regulator of the bottled gas to
the AQ Pro “A” inlet in the center port on the bottom of the unit. A simple way to feed
the span gas to your monitor is by an open T-connection that will ensure that gas is fed
at ambient pressure. The regulator valve is used to control the flow of gas to the
monitor. To ensure that the span gas is fed properly and as efficiently as possible,
connect a bypass flow-meter at the outlet. Adjust the regulator to maintain
approximately 750 cc/min of flow at the outlet.
You must not feed gas to the AQ PRO under pressure and you must not starve the AQ
PRO's pump for gas. When feeding the gas, you must maintain a reasonably constant
pressure, near ambient pressure.
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Gas Hose from Cylinder connects to
Center “A” Inlet on Bottom of AQ Pro
for Span Calibration
T – for
proper
air/press
ure flow
ZERO AIR Gas Bottle Calibration:
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NOTE: Please take special care when performing Calibration of the monitor.
You cannot revert back to the factory setting after making any adjustments!
D. CALIBRATION PROCEDURE
The following page illustrates the sequence of key strokes to carry out a span
calibration of the AQ Pro. It is assumed that the instrument has been zeroed and there
have been no error messages.
Electrochemical Gas & PID VOC Sensors
1. Turn the AQ Pro on and press Measure. Allow the instrument to warm up for 15
minutes before beginning the calibration procedure.
2. Connect the outlet from the tee fitting of the gas calibration fixture to the “A” inlet
connector on the bottom of the monitor using the set up shown in the above
calibration apparatus photo:
3. Turn on the gas flow and observe the gas readings on the instrument. If the gas
reading for the sensor being calibrated does not increase after a few seconds,
turn off the gas flow until the problem is found. Otherwise, press OK.
4. Press the key labeled “CALIB” to enter the calibration menu.
5. Scroll down to SPAN TIME and set the value to 20 seconds.
6. Scroll down to the sensor to be calibrated first. If the calibration lock is on, enter
the password 1315.
7. Use the arrow keys to enter the span value printed on the calibration cylinder
being used. Press OK.
8. When the countdown reaches 3 seconds, there will be a series of beeps
indicating that the calibration has been preformed.
9. Verify that the reading for the sensor being calibrated matches the value entered
in the calibration menu, and that the reading for all of the other sensors is zero.
10. Turn off the gas flow.
11. Repeat this procedure for each electrochemical sensor to be calibrated.
Temperature, Humidity and Barometric Pressure
Please contact E Instruments for proper Calibration Procedure
Pressure and Air Velocity Calibration Procedure
1. Connect a pressure calibration standard to the pressure (+) connector on the
bottom of the instrument.
2. In the SETUP menu, make sure the velocity sensor is off.
3. Press the “CALIB” key to enter the calibration menu.
4. Scroll down to SPAN ∆P and press OK.
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5. Using the calibration standard, generate a pressure value near the maximum
stated value for the scale being used, for instance 80 mbar if using the mbar
range.
6. Enter the value generated as the span value using the arrow keys, and press the
enter key.
7. Verify that the reading on the instrument matches the reading on the calibration
standard.
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CHAPTER 10
AQ GAS SOFTWARE
1. COMMUNICATIONS
The AQ Pro Monitor communicates with a PC either using the USB cable or wirelessly
using its internal Bluetooth (BT) module. If your computer does not have internal BT
capabilities, use the external BT module that is supplied with the AQ Pro
The communication protocol is as follows:
BAUD RATE: 115000 baud
FORMAT: 8 bits, 1 stop bit, no parity
HANDSHAKE: None
USB CONNECTION
For USB connections, use the A-to-B type USB cable supplied with the instrument. To
establish a USB connection, the FTDI USB driver must first be installed on your
computer. The USB drivers for Windows computers are located on the E
INSTRUMENTS USB Thumb Drive:
When you plug the USB cable from the computer to the monitor, you should hear
a small “da-ding” sound indicating that the USB connection has been made.
If you have the FTDI USB driver already installed in your computer the computer
will know and will NOT initialize the “New Hardware Wizard”.
If the New Hardware Wizard appears you need to install the FTDI USB driver. To
install this driver:
1. Locate the FTDI USB driver on the CD or download it from the
E INSTRUMENTS website and save it to your desktop.
2. The downloaded file is zipped. Double-click the zipped folder and choose
Extract All Files. Extract the files to a folder on the Desktop. The driver files
are in the FTDI_USB folder.
3. Follow the instructions in the New Hardware Wizard
4. You will have to go through the wizard twice, once to install the ftdiport.inf file
and once for the ftdibus.inf file.
BLUETOOTH CONNECTION
For Bluetooth connections, the connection process varies with different Bluetooth
devices. Follow your manufacturer’s instructions for adding a device. The
E INSTRUMENTS’ Bluetooth modem is a Class 1 device, with a maximum range of
100m. Obstacles such as walls and equipment will reduce the effective range.
TM
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The AQ Pro is supplied with a Bluetooth Dongle to make connections to PC’s without
internal Bluetooth capabilities.
1. Connect the USB Bluetooth adapter to your PC, the drivers will begin to install
automatically.
2. In order to establish communications between the PC and your E Instruments’
monitor, navigate to the following path:
Start –> Control Panel –> Hardware and Sound –> Add a Bluetooth device (listed
in Devices & Printers area)
3. Turn your instrument on, and it will appear on the screen after a few moments.
Select it from the list and click Next.
4. On the next screen, select “Enter the device’s pairing code” and click Next.
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5. Enter the pairing code “0000” (four zeros) into the empty field and click Next.
6. Paring will complete and the PC to instrument communication drivers will be
automatically installed.
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ALL CONNECTIONS
When you connect your AQ PRO to your
computer for the first time, the connection will
be assigned a unique comport number.
Remember the comport number as it will be
needed to open an AQ GAS session.
You can find the comport associated with your
E INSTRUMENTS in the Windows Device
Manager.
To open the Device Manager:
Go to the Windows “START” menu,
click “RUN” and type devmgmt.msc
(Or go to the Control Panel, choose the
System icon, then the Hardware tab,
and click the Device Manager Key).
A window will open that will list
“PORTS” among other items. Click on
“PORTS”.
The comport will be listed as:
o USB Serial Port (USB)
o Standard Serial over Bluetooth link (Bluetooth)
2. USING AQ GAS SOFTWARE
You can enhance the performance and versatility of the E INSTRUMENTS AQ PRO by
using the AQ GAS software program. AQ GAS is available for most Windows operating
systems.
The AQ GAS software is a robust
package that allows you to:
1. Monitor all Air Quality
parameters.
2. Record maximum, minimum,
average for all Air Quality
parameters.
3. Select a variety of saving and
printing options.
4. Retrieve stored data.
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5. Set alarms for every air quality parameter including recording the time duration
that alarms have been exceeded.
6. Plot bar graphs and time plots of all air quality parameters.
The AQ GAS software can be downloaded from the included USB Thumb Drive.
Windows 8 users may have to load drivers from the following link:
http://www.makeuseof.com/tag/how-can-i-install-hardware-with-unsigned-
drivers-in-windows-8/
Consult the AQ GAS manual for details on installing and operating the program. The
manual can be accessed by clicking on “Help” and then “How Do I…” in the AQ GAS
software program.
STARTING AQ GAS
1 Before starting AQ GAS, have your AQ PRO turned on and connected via
USB or Bluetooth.
2 Start the AQ GAS Software program. If you have connected before, the
monitor icon will automatically appear. If this is the first time you are
connecting, you will need to add a new port.
3 On the AQ GAS window click on “Connections”, then click on “Add Port”.
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4 Enter the COM port number which appeared in the Device Manager, and click
“OK”.
5 The COM port with its number should appear on the left side of the AQ GAS
window. AQ GAS will look for a monitor on this port. After a moment the E
INSTRUMENTS monitor icon should appear. You are now connected to your
monitor.
6 Click on the E INSTRUMENTS icon. A menu will appear. Choose “Monitor”
from the menu. (Follow the AQ GAS manual for further instructions).
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INTERVAL
ITEM
PROCEDURE
Weekly
ZERO Check of ALL Gas Sensors
Perform using ZERO AIR
Weekly
ZERO Check of the CO2 Sensor
Perform using ZERO AIR
Annually
SPAN Calibration of ALL Gas Sensors
Perform Span or
Send to Factory
NOTE: You must always span calibrate the instrument every time
you replace a sensor.
NOTE: CO2 should ALWAYS be Calibrated or Zeroed with a Cylinder of ZERO
AIR. Do Not Use Ambient Air for CO2 sensor calibration.
CHAPTER 11
MAINTENANCE
The AQ Pro Indoor Air Quality Monitor is a sophisticated analytical instrument designed
to perform accurate air quality measurements. However, because the monitor is a
portable, field/lab used instrument that can be used in many environments, care must
be taken to prevent physical and environmental abuse to help maintain trouble-free
operation.
There are some components that will require periodic inspection and/or replacement.
*Note: These stated intervals are dependent on the unit’s usage and applications
A. Sensor Replacement
This should be an infrequent operation, since the sensors have a typical life of a few
years.
If you receive an error message for one of the sensors during instrument operation you
may have to replace the sensor. Please contact E Instruments for replacement
sensors. The user can send the unit back to the factory for sensor installation and recalibration of the instrument or the sensors can be replaced in the field. The
replacement sensors will be supplied with installation instructions.
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B. Printer Paper Replacement
The external printer uses a high quality 2" thermal paper. Keep any
spare paper rolls in a cool dark place to prevent paper discoloration.
1) Press the open key on the printer to open the paper cover
2) Insert the paper as shown in the image. Remove any remaining
core of a used paper roll.
3) Make sure to align the paper roll properly.
4) Pull the paper out as shown in the image, and close the cover.
5) Tear off any excess paper in the direction of the side of the
printer.
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CHAPTER 12
AQ PRO OPTIONS
The E INSTRUMENTS’ AQ PRO is an extremely versatile Indoor Air Quality (IAQ)
measurement system that meets many Air Quality measurement requirements. It has
been designed as a modular system, permitting the installation of most of the various
available options. This manual describes the complete instrument equipped with all the
options.
The AQ Pro’s standard capabilities include (1) NDIR CO2 sensor (0-5,000 ppm),
Ambient Temperature, Relative Humidity, Wet Bulb, Dew Point, Barometric Pressure,
one (1) separate Type K (TcK) thermocouple temperature measurement input, Air
Velocity measurements, differential pressure measurements, 1000 internal storage
tags, Bluetooth wireless PC communications, REAL-TIME Data Logging capabilities
using AQ GAS WindowsTM software, USB Cable, and extensive user-friendly help
screens. The available additional gas sensor options and accessories are:
1. AIR QUALITY MONITOR SENSORS*
Carbon Dioxide (CO2) – non-dispersive infrared (NDIR) sensor (0-5000 ppm)
Carbon Monoxide (CO) – electrochemical sensor (0-200 ppm)
Oxygen (O2) - electrochemical sensor (0-25%)
Nitrogen Dioxide (NO2) - electrochemical sensor (0-20 ppm)
Nitrogen Oxide (NO) - electrochemical sensor (0-250 ppm)
Sulfur Dioxide (SO2) – electrochemical sensor (0-20 ppm)
Hydrogen Sulfide (H2S) – electrochemical sensor (0-100 ppm)
Formaldehyde (FMH-CH2O) – electrochemical sensor (0-10 ppm)
Isobutylene (VOC) sensor – Photo ionization detector (PID Sensor) (0-20 ppm)
Isobutylene (VOC) sensor – Photo ionization detector (PID Sensor) (0-200 ppm)
2. OPTIONAL EXTERNAL MEASURING PROBE
Certain applications might have the need for the optional
probe (12” long stainless steel probe with 10’ ft long hose) for
hard to reach places, separate areas, etc. The probe
consists of the stainless steel extraction probe, the sampling
line and a Type K thermocouple for external temperature
measurements with the probe.
This standard probe (Part # AACSF22) is suitable for temperatures up to 800ºC/1470ºF.
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The end of the probe’s sampling line connects to the “A” inlet connector on the bottom
of the AQ Pro and the thermocouple connector connects to the TcK TEMPERATURE 1
input on the bottom of the AQ Pro.
3. OPTIONAL L-SHAPED PITOT TUBE
Pitot tube – This optional L-shaped pitot tube consists of stainless steel tubing with the
tips open and bent at a certain angle to properly measure air and/or gas velocities. The
Pitot tube must always be oriented with the open tips parallel to the direction of the air
flow. The end of the Pitot tube assembly is connected by means of two flexible hoses to
a very accurate pressure transducer located inside the monitor.
4. OPTIONAL DIFFERENTRIAL PRESSURE HOSES (part #: AACKP01)
This optional PRESSURE HOSES consist of two (2) clear hoses
for either (1) single positive pressure connection, one (1) single
negative pressure connection, or (2) hoses for differential pressure
using both connections simultaneously. The hoses connect to the
(-) and/or (+) PRESSURE connections on the Bottom of the AQ
Pro.
5. OPTIONAL WIRELESS REMOTE PRINTER
(Part #: E852110)
The AQ Pro uses a wireless Bluetooth remote printer. The printer is
powered by a rechargeable battery. An AC charger is supplied with
the printer. The printer is optional with the AQ Pro. See Chapter 7
for more information
6. OPTIONAL CALIBRATION KIT (ZERO AIR) (Part #: AQ CAL)
The AQ Pro uses a bottled Cylinder of ZERO AIR for ZERO
Calibration.
Part #: AQCAL comes with (1) 17L ZERO AIR Cylinder & (1)
Regulator
Part #: AQAIR is replacement (1) 17L ZERO AIR Cylinder only
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ZERO ERRORS
Channel
Possible Causes
Resolution
(Electrochemical sensors)
CO
NO
NO2
SO2
H2S
O
2
CH2O
Sensor has been recently
exposed to gas and has
not yet returned to zero.
Purge for 10 minutes with
fresh air, monitor sensor
voltage, and re-zero.
Insufficient Warm Up
Allow the sensors to warm
up after 10 minutes
Incorrect ZERO
calibration
Repeat ZERO cal in fresh air
or with ZERO AIR cylinder
Pump Failed
Check pump flow, if pump
failed replace
Battery was dead, sensor
has destabilized.
Charge battery, wait up to 24
hours for sensors to
stabilize, and re-zero.
Sensor cell life has
expired.
Call E INSTRUMENTS
replacement.
(PID sensors)
VOC
Sensor has been recently
exposed to gas and has
not yet returned to zero.
Purge for 10 minutes with
fresh air, monitor sensor
voltage, and re-zero.
Battery was discharged,
sensor has destabilized.
Charge battery, wait up to 24
hours for sensors to
stabilize, and re-zero.
Sensor cell life has
expired.
Call for a replacement.
Temperature Thermocouple
Thermocouple is not
connected
Check electrical connections
running to the probe
Infrared CO2
No response from infrared
system
Zero period must be at least
45 seconds. Zero the
instrument again with a
cylinder ZERO AIR.
Infrared system is
reporting error code
Infrared system may need
maintenance.
CHAPTER 13
BASIC TROUBLESHOOTING
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Velocity
Velocity probe/Pitot Tube
is not connected
Check probe and
connections.
Bluetooth connection failure
Connection Failed
Redo connection process
TROUBLESHOOTING
Symptoms
Possible Causes
Resolution
Monitor will not turn on.
(Screen is off)
Battery is discharged.
Plug in the charger. Monitor
should turn on.
Battery is not charging.
Check the charger and jack.
Check the case for excessive
heat.
Internal initialization
problem.
Reset the monitor.
Monitor turns on but
screen is blue or faded.
Internal initialization
problem.
Reset the monitor.
Monitor is overheating.
Unplug charger.
Turn on & off to reinitialize.
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PART NUMBER
DESCRIPTION
AAA32-240
O2 Sensor (0 - 25%)
AQ CO-200
CO Sensor (0-200 ppm)
AQ NO-250
NO Sensor (0-250 ppm)
AQ NO2-20
NO2 Sensor (0-20 ppm)
AQ SO2-20
SO2 Sensor (0-20 ppm)
AQ H2S-100
H2S Sensor (0-100 ppm)
AQ FMH
Formaldehyde Sensor (0-10 ppm)
AQ CO2-5000
NDIR CO2 Sensor (0-5000 ppm)
AQ VOC-20
PID VOC Sensor (0-20 ppm)
E852010
Rechargeable Battery Pack
E85-9078
Printer Paper Roll
E852020
AC Charger, 100-240VAC/50-60Hz with
12V Output
E852130
Bluetooth Adapter/Dongle
AQCAL
Calibration KIT – ZERO AIR Cylinder w/
Regulator
AQAIR
Replacement ZERO AIR Cylinder ONLY
PRO8140
Vinyl Carrying Case with Shoulder Strap
E852110
Remote Bluetooth Wireless Printer w/ AC
Charger
AACSF22
12” Probe and 10’ hose
AACKP01
Differential Pressure Hoses
CHAPTER 14
REPLACEMENT PARTS
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