Nasal Ranger® is a portable odor measuring device. It allows users to determine the level (strength) of odors in almost any location and condition. This powerful instrument is an innovative, easy-to-use alternative to the standard method of determining the odor strength. Using this instrument, responsible persons in industrial plants, environmental inspectors and neighbors are able to carry out complete odor monitoring, influence odor regulation, modify technology and document changes in the field. Nasal Ranger® goes far beyond traditional standard assessment methods, allowing easy measurement of odor strength in a specific location.

The Nasal Ranger® system includes:

4 filter cartridges, a nasal mask, a seal and a bag to store it, additional seals (5 pieces), isopropyl alcohol wipes (10 pieces), a barrel cleaning brush, a 9V battery, a shoulder strap and a carrying case.

Detection Technique   Human nose

Discrete Dilution Ratios:                   2, 4, 7, 15, 30, 60 D/T’s (accuracy and reproducibility                                                        of dilutions+- 10%)

Additional D/T dial                           60,100,200,300,400,500 (accuracy and reproducibility                                                       of dilutions:+- 5%)

Measuring range                               1 – 501 ou/m3

Response Time                                   About 3 seconds (2 inhalations)

Accuracy                                            +/- 10% D/T

Repeatability                                      +/- 2%

Inhalation Rate                                  16 – 20 liters per minute

Operating Temperature range            0oC to +40oC

Power Requirements:                         9V alkaline battery

Dimensions                                        35.5 x 19 x 10 cm

Weight                                                0.91 kg

Materials of construction                  PTFE and polymer covered aluminum

Filter cartridges                                  diameter 8.9 cm x 7 cm

Nasal mask                                         7 cm x 5.7 cm

Patent                                                U.S. Patent No. 6,595,037

Calibration Verification:                    Recommended Annually

EMC Verification:                             Emissions: EN 61326:1997, Class B

Immunity: EN 61326:1997, industrial locations

Markings                                            89/336/EEC (EMC)

92/59/EEC (General Product Safety)


Nasal Mask

The Teflon-coated, replaceable Nasal Mask is ergonomically designed to fit your nose comfortably.

Comfort Seal

The Comfort Seal is made of foam for comfort and sealing when working with a nasal mask. The seal is a disposable accessory.

Mask Wipes

Individually packaged wipes soaked in isopropyl alcohol are used to clean the mask between each measurement series.

Universal Odor Filter Cartridges

Replaceable odor-filter cartridges filled with granular activated carbon remove odors from the environment to create clean dilution air. Packed in pairs, they are easy to install in the device.

Custom filters

There are filters dedicated to work in an environment generating specific odors, such as organic compounds, hydrogen sulfide, ammonia.

Additional D/T Dial

An additional D/T dial allows for higher measurement dilutions: 60, 100, 200, 300, 400 and 500 times.

Weather Station

In an environmental detection system, a weather station close to the detection site is essential to ensure reliable measurements with the Nasal Ranger® system. The station measures short-term values of weather parameters occurring during the measurement in a specific location, averaged when preparing the measurement results.

The Nasal Ranger® system is calibrated in such a way that the results are read directly from the measurement dial in European odor units per cubic meter (ou/m3), according to the following rule: value from the dial + 1 unit. This measurement stage does not require any software.

Results from the Nasal Ranger® system can be entered into any software.

{Data transmission and recording tab}

Data registration in the Nasal Ranger® system

Data is registered on the Result Sheet immediately after the measurement. It contains the following information: date and time of measurement, location, D/T result, description, comments, weather conditions, name and signature of the operator. Data from the Result Sheet can be entered into any commercially available software.

Data registration in the Nasal Ranger® system

Data is registered on the Result Sheet immediately after the measurement. It contains the following information: date and time of measurement, location, D/T result, description, comments, weather conditions, name and signature of the operator. Data from the Result Sheet can be entered into any commercially available software.


Odor monitoring

Field olfactometry with the Nasal Ranger® portable olfactometer are an efficient and cost-effective method for quantifying the odor force in the “Dilution-to-Threshold” (D/T) system. Landfill managers, municipal inspectors, and local residents can use this equipment to monitor odor strength in individual locations as well as around and within the sites that generate odor.

Below you will find some possible shortened application protocols:

(1) Field monitoring – The user has a unique opportunity to monitor odors during the day using a portable olfactometer. The user can monitor odors in situations of material supply, odor generating processes, transient gas emissions. Monitoring with the use of a portable field olfactometer can be carried out in a particular, specific location, e.g. corridors, access roads, storage areas, by fence lines, etc.

(2) Random monitoring – A frequently used method of odor monitoring in the surrounding air are the so-called “random inspections”. Such inspections lead to the collection of data which can then be correlated with the meteorological data covering the measurement site. The administrators and supervisors of such sites can discover that measurements using this method provide very useful results in further documentation.

(3) Scheduled monitoring – Well scheduled monitoring can be narrowed to a daily walk about or drive around the monitored location one or several times a day. Results obtained from a portable olfactometer can be used to correlate a number of parameters affecting odor generation situations, including meteorological conditions and field operations.

(4) Survey of odor generating sites – Assessment of odor generating sites and environmental impacts may be required for obtaining or renewing permits. Large quantities of data collected with a portable olfactometer will allow to identify sources and operations generating odors, separating them from other ones not causing the formation of odors. Potential and actual sources of odor may be classified to determine their impact. Short-term measurements of migrating odors, e.g. for local odors disposal activities, will require the collection of many results using a portable olfactometer.

(5) Residential monitoring – The introduction of odor monitoring at the place of residence using the Nasal Ranger® portable olfactometer can be part of the standard municipal operation. The primary objective of monitoring residential areas is to collect information, through accurate recording of the results, about the actual status and conditions of residence. Inhabitants trained to use the Nasal Ranger® portable olfactometer can also submit odor reports. This monitoring model can help to determine the time and weather conditions in which the odor generation may occur. Monitoring of residential areas can also help to determine the odor strength at which the odors become a nuisance.

(6) Exceptional situations – The use of the hotline for notification of incidents can be a common method of obtaining information about the sudden appearance of odors. A pre-prepared contingency plan with detailed instructions for notifiers provides opportunities to verify the appearance of odors, track their movement and determine their strength.

(7) Odor control – Standard and specialized models for the spread of odors make it possible to predict the transmission of odors by wind and their strength. The so-called “plume profiling” protocol complements and calibrates these models. Several dozen inspectors equipped with portable olfactometers, positioned in different places in relation to the wind direction and the source of the odors, will determine the values of the D/T odor strength. Then a plume profile will be created and placed on the terrain map. In this way, the odor spreading model and the local topography will be integrated into the current odor measurements made with the Nasal Ranger® portable olfactometers.

Although the Nasal Ranger olfactometer does not comply with the EN13725 standard, the measurement accuracy is +/- 10% over the entire measuring range. The measurement repeatability error is only +/- 2%.

The Nasal Ranger olfactometer is used, inter alia, by:

Gdańsk University of Technology, Warsaw University of Technology, University of Life Sciences in Lublin, Gdynia Maritime University, KGHM Polska Miedź S.A., Cracow University of Economics, Lotos, Municipal Department of Sanitation in Cracow, University of Łódź, West Pomeranian University of Technology in Szczecin, Municipal Department of Sanitation in Pruszków, PU Hetman Sp. z o. o.