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"Attach & Go" Ground-based Gas Sensing

CitySense | Public Transport & Service Vehicle Mounted

Fits for Almost any Ground Vehicle

Empowers cities to become cleaner and more sustainable

Ground-based Environmental Data Acquisition Solutions
Wind Sensing

Sniffer4D Multi-gas Sensing

Sniffer4D GHG (CO2 & CH4) Sensing

Speedip V2 Smart Water Sampling

Aerial Gas Sampling

Nuclear Radiation Sensing

Versatile & Powerful Generalists

Towards Carbon Neutrality

No More Rope Tangling & Full Automation

Close the "Sense→Sample→Lab Test" Loop

Sense while Flying

Assess the Scene from a Safer Distance

Ship Fuel Sulfur Content (FSC) Estimation

High FSC Ship Quick Screening

UAV-based Environmental Data Acquisition Solutions

No drilling or wiring is required. Mounting or dismounting can be carried out by a single person within 15 seconds.

Compatible with almost any ground vehicle including van, bus and taxi.

Non-destructive Instant Installation

Sniffer4D V2 ground vehicle integration kit neatly combines Sniffer4D, air pump, battery system, and external GNSS module into a single device that can work independently. Straight-forward operations minimize the training cost while preventing misoperations.

High Level of Integration

Only one crew is required for system installation and data collection, reducing the overall cost of obtaining hyperlocal air pollution information.

Single-man Operation

Sniffer4D records data at 1Hz. The theoretical spatial resolution reaches up to 5~22m under normal driving speed (20~80km/h).

Ultra-high Spatial Resolution

Sniffer4D V2 transmits data via cellular network with unlimited range. You can visualize real-time data from anywhere.

Real-time Data Transmission

More Functions

Sniffer4D Mapper software visualizes and analyzes data from one or multiple Sniffer4D(s) in real-time, providing intuitive & insightful information for decision makers.

Sniffer4D Mapper - The Data Visualization and Analytical Software

Sniffer4D is able to sense up to 9 gases and particle concentrations at one time. Users can flexibly choose or alter their sensor configurations that suit their applications and budgets.

Ambient Air Monitoring

PM2.5 | PM10 | SO2 | CO | NO2 | O3 | TVOC | Odor (OU)

Oil & Gas Plant Leak Detection TVOC | CH4 | H2S | SO2

HAZMAT TVOC | CH4 | CO | CO2 | Cl2 | O2 | NO2 | H2S

Available Parameters

TVOC | SO2 | CO | NO2 | O3 | PM1.0 | PM2.5 | PM10 | CxHy / CH4 /LEL | H2S | HCl | TSP/PM100 | NH3 | CO2 | HCN | H2 | PH3 | Cl2 | O2 | NO | Odor (OU) | High-Resolution CH4*

* Externally-mounted modules that do not occupy the internal space.

Sense Up to 9 Gases at a Time

Advanced Real-time Visualization

Sniffer4D Mapper software visualizes and analyzes data from one or more Sniffer4Ds in real-time. Three types of visualization (2D grid/2D isoline/3D point cloud map) provide intuitive & insightful information for decision makers.

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From data collection to result delivery

One-stop Workflow

See Your Real-time Data, Anywhere

Sniffer4D's built-in cellular connectivity* & US-based Cloud server enable secure real-time data transmission with unlimited range to decision makers in different locations. *Supports 4G/LTE/3G/EDGE/GPRS

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One-click Result Delivery

After a mission, simply click a button to generate a mission report containing key results, or a CSV datasheet containing all the raw data. Reporting your work has never been easier.

Industry leading data quality (R²0.81-0.95) in co-location tests with a scientific grade monitoring station.
Data Learning

Compare long-term datasets from Sniffer4D and a local reference monitoring station (placed at the same location) to determine the calibration parameters.

Inject calibrating gases with known concentrations to determine the calibration parameters.

Calibrating Gas

Use local AQI information to roughly determine the calibration parameters.

Quick Adjustment

Every Sniffer4D is factory calibrated before shipped out. We recommend re-calibrating the device every 12 months. There are generally 3 ways to calibrate Sniffer4D.

Sniffer4D provides superior data quality and offers up to part-per-billion (ppb) detection resolution for specific modules.

Even gases in ppb-level concentration can be sensed and analyzed with accuracy.

Achieved through: Proprietary ultra-low-noise signal processing circuits; State-of-the-art sensing components;

Proprietary environmental and individual difference compensation algorithms; Rigorous quality control process.

Verified Data Quality

An Innovative Integration Solution

"Attach & Go" Ground-based Gas Sensing solution, an agile, simple, and non-damaging solution for quickly mounting Sniffer4D multi-gas and GHG systems to most ground vehicles.

Sniffer4D V2 + Sniffer4D Mapper + Official Ground Vehicle Integration Kit + Ground Vehicle

TDLAS Methane Sensing Module + Sniffer4D V2 + Sniffer4D Mapper + Official Ground Vehicle Integration Kit + Ground Vehicle

1 ppm NDIR CO2 Sensing System + Sniffer4D Mapper + Official Ground Vehicle Integration Kit + Ground Vehicle

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Traditional Solutions

Limited Detection Range

Traditional detection methods have difficulties in achieving large-scale detection due to complex emission sources in the city.

Low Efficiency

Traditional detection methods much depend on handheld devices, unable to finish large-area detection missions with efficiency.

Slow Response

Hard to locate emission sources with effective deployment in HAZMAT scenarios.

Low Quality Data

Limited gas information for a thorough data analysis.

Typical Applications

Environmental Protection

City Ambient Air Monitoring,

Air Pollution Source Locating, Plant Inspection

Fire/HAZMAT Response

Toxic Gas Identification, Gas Leak Detection

Scientific Research

Air Pollution Vertical Profiling,

City Hyperlocal Air Analysis

User Cases

Jingjiang Branch of the Ministry of Ecology and Environment Tracking and Locating Gas Emission Sources With "Attach & Go" Ground-based Gas Sensing Solution

14 sets of "Attach & Go" environmental monitoring equipment are applied to track and locate gas emissions sources around cities. Our system significantly improves the efficiency in regular air quality inspecting, urban emission sources locating, gas diffusion analysis etc.

安装于正上方，最大限度降低旋翼气流干扰

Ground-based & UAV-based Solution For Locating O3 Emission Sources

With our intuitive and visualization real-time data from Sniffer4D Mapper, the Ground-based + UAV-based gas sensing solution helped local EPA accurately target O3 emission sources.

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Marquette University

Research on Urban Traffic and Environmental Pollution

"Attach & Go" solution using a Sniffer 4D sensor mounted on a vehicle allows measurement of particulate matter (PM 1, 2.5 and 10), NH3, H2S, and O3+NO2 on main roads and highways in Milwaukee, offering insightful information to analyze the impact of traffic on air pollution in mid-sized cities before & after Covid-19 lockdowns.

Institute of Applied Ecology, Chinese Academy of Sciences Spatial Distribution Characteristics of Gases & Particulate Matter

Sniffer4D V2 on Ground Vehicles provides solid data for research on spatial distribution characteristics of gaseous pollutants (NO2 & SO2) and particulate matter inside a city in the heating season of Northeast China.

ꂃ ꁹ

"Attach & Go" Ground-based Gas Sensing

Unleash Sniffer4D V2's potential and expand its application. Greatly reduce the cost of detecting, mapping & analysing hyperlocal air pollution