Aeroqual Series 300 Monitor (S-300) with Sensor Head

The Aeroqual Series 300 allows portable monitoring and controls in a single package. When stationary, the Series 300 has relays and voltage outputs that can interface with your dataloggers or control systems. When on the move, the rechargeable battery gives you hours of safety monitoring that you can take with you.

S-300 Rental HERE

As low as $858.00
5 In Stock

The Aeroqual Series 300 Monitor with Sensor Head gives you the benefits of both a Controller and a Portable. It has relays and voltage outputs, letting you interface with control systems, equipment, or dataloggers. But it is battery-powered, so you can take it with you when necessary. Like all of the Aeroqual handhelds, the Series 300 is available with a variety of sensor head options, letting you specify the gas and range that you need (see the drop-down list above). This kit comes with a single sensor head, but additional sensor heads can be purchased on our Replacement Sensors page.


How to Order:

Step-1: Choose your gas sensor from the Sensor Head drop down box.  For more information on gas sensors see our Replacement Sensors page

Step-2: Choose your options and required related products.  Note: Aeroqual sensors are extremely versatile and customizable.  Should you have questions, feel free to call or e-mail.

Step-3: Add to cart, the monitor and options necessary.  When in the cart you can continue shopping to add additional Sensors to your order.


The Series 300 Ozone Monitor is a versatile monitor with the ability to accurately measure 4 different ranges of ozone sensor as well as temperature and relative humidity, if required. It is designed for ozone monitoring and control in a variety of applications. Ozone concentrations can be displayed in either ppm or mg/m3 on the large LCD display. There are also user defined high and low alarm set points which will trigger an audible alarm when the ozone concentration exceeds the set point.

A key feature of the Series 300 is the ability to operate in control mode. Upper and lower control limits can be easily set directly on the display. Using the 0-5V output the Series 300 can be used to switch on or off an externally connected device, such as an ozone generator, or system in the presence of a predetermined level of gas. By selecting the optional wall-mount bracket and plugging in mains power the Series 300 is effectively able to act as a fixed monitor as well as a handheld portable device.




     -Fits comfortably in the hand

     -One monitor compatible with up to 30 different sensors

     -Audible alarm functionality

     -Changing sensors takes seconds and can be done anywhere

     -Remote sensor capability

     -Long life lithium battery technology

     -Zero and span calibrate in the field



     -Source and leak detection

     -Process control

     -Health and safety monitoring

     -Indoor air quality


What's Included:

     -Monitor Base

     -LCD Display

     -Lithium battery and charger

     -0-5 VDC output

     -Zero and span calibration adjustment

     -Low and high audible alarm

Everything that comes with the Aeroqual Series-500Click image to expand



For those wanting to recalibrate on site the Series 500 allows adjustment of zero and span. Together with the R42 Calibration Accessory and an ozone generator this function allows the sensor head to be fully recalibrated without having to return it to the factory. Alternatively the sensor head can be returned for a factory calibration which includes a renewed calibration certificate. The sensor should be calibrated annually, and then replaced when the sensor fails. (Sensor Life: approx. 2 years)

Every sensor head we send out comes with a calibration certificateClick here to see a visual explanation of the contents of your calibration certificate.


Interchangeable Sensors:

Sensor heads for the Series-500 are interchangeable, allowing you to detect many gasses with one device. Using the optional carry cases you can keep your Series-500, optional accessories, and spare sensor heads all in one safe, portable case.

Each sensor head will fit each handheld device.  Simply pull the sensor out and put a different sensor in its place.  The S-500 will recognize the sensor and display the proper range and gas on the screen.

 Sensor head parts

Replacement (or additional) sensor heads are available for all of the gases listed above. You can find their details and pricing on our Replacement Sensors page!

Note: sensors for the optional enclosure, R13, outdoor enclosure, or environmental enclosure are all calibrated specifically for an enclosure.  Please specify when ordering if you are using sensor in an enclosure.


Data Logging:

Data logging with the AQ-300 is possible with an external data logger, such as, the DL-3.  Using the 0-5 vdc output signal from the Series-300 the DL-3 can log and save gas measurements.  This is a great addition for your Series-300 monitor if data logging needs are a new requirement, or if portability of your data is a requirement.

 DL-3 Ecosensors data logger



Environmental or Outdoor Enclosures:

 The Series-300 can be ordered for outdoor, or harsh duty uses with a variety of options. 

Note: When using an enclosure the sensor is calibrated specifically for use inside that enclosure.  Portable capabilities of the device will be lost.  However additional heads calibrated for portable use are available.  Keep this in mind when ordering.

The R-13 Remote Sensor adapter will allow the gas sensor to be placed in a remote area while the base unit is in a safe, protected environment.  Perfect for applications where outdoor gas measurements are desired and indoor data logging and recording is possible.  The R-13 is capable of measuring gasses accurately in slightly windy and dusty environments.  Some protection from sun, and rain will be required with the R-13.

The R-13 Adapter can be purchased as a separate accessory when you purchase the Series-300.

Aeroqual R13 Remote Sensor Head Adapter

The Environmental Enclosure will allow the Series-300 to be placed in similar environments as the R-13 sensor head adapter.  With the clear cover gas readings from the Series-300 will still be possible, along with all control and safety alarms still used.  In wet, or dusty environments this enclosure is the perfect method to implement the features of the Series-300 into your facility.  This is great for food processing applications where ozone or other gasses are used in wet and wash-down environments.

The Environmental Enclosure can be added to your order of the Series-300.  We will configure and install the Series-500 and sensor heads in this enclosure prior to shipping.

Series-500 Environmental enclosure


Battery Replacement:

The Series-300 ships with a rechargeable and replacement battery.  Extra batteries can be purchased to keep as a spare with your Series-300.  This will allow long term field measurements.  See image below for battery location and replacement.

 Series-500 battery replacement


Compare the Series 200, 300, 500 monitors:

Compare the Aeroqual handheld devices


Aeroqual Series-200


Aeroqual Series-300


Aeroqual S-500

Interchangeable sensor head Yes Yes Yes
Digital LCD Display Yes Yes Yes
Min, Max, Average readings on screen Yes Yes Yes
Field Replaceable Battery Yes Yes Yes
Remote Sensor Capability Yes Yes Yes
Temp and HR Sensor optional Yes Yes Yes
External Control Outputs No Yes Yes
Audible Alarm No Yes Yes
High and Low Alarms No Yes Yes
0-5 VDC Analog output No Yes Yes
Zero Calibration capability Yes Yes Yes
Span Calibration capability No Yes Yes
Internal Data Logging Capability No No Yes

PC connection cables and capability

No No



View a brochure with specifications on the Series-200, 300, and 500.



Sensor Specifications for Handheld Aeroqual Series-200, 300, and 500

Aeroqual handheld sensor specificationsClick on image for full size image

          Full list of technical information and specifications for all Aeroqual sensors



     -Series 300 Product Brochure

     -Series 300 Quick Guide

     -Series 300 Product Manual

     -Aeroqual Portable Air Quality Monitor Information

More Information
Manufacturer Aeroqual
Rental Period Weekly
Quickbooks Stock Level 5.000000
Call For Price No
Gas Ammonia (NH3), Carbon Dioxide (CO2), Carbon Monoxide (CO), Chlorine (Cl2), Dual - CO, CO2, Formaldehyde (CH2O), Hydrogen (H2), Hydrogen Sulfide (H2S), Methane (CH4), Nitrogen Dioxide (NO2), NMHC, Ozone (O3), Particulate Matter (PM), Perc (C2Cl4), Sulfur Dioxide (SO2), Triple, CO, CO2, VOC, VOC
4-20 mA Output No
Relays 1 Alarm Relay + 1 Control Relay
Field Replaceable Sensor Yes
Min, Max, Avg Yes
Voltage Output 0-5 V
Power Requirements 12V DC via supplied adapter
Datalogging No
Rechargeable Yes
Field Replaceable Battery Yes
Warranty 1 Year
Audible Alarm Yes
Calibration Annually
Sensor Life 2 Years
Range Gas Dependent
Unit Features

-Backlit LCD Display

-Min., Max, Avg., Logged

-Field Replaceable Sensor

-0-5 VDC Output

-Control Relays and Alarms

Sensor Range

0-0.05 ppm

0-0.15 ppm

0-0.5 ppm

0-10 ppm

0-30 ppm

Resolution Gas Dependent
Sensor Range

Gas Dependent

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